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                                                         Exhibit: 10(ggg)
                                                         Business Loan Agreement
[Bank of America Logo]
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This Agreement dated as of December 22, 1998 is between Bank of America 
National Trust and Savings Association (the "Bank") and Cerprobe Corporation 
(the "Borrower").


1.   LINE OF CREDIT AMOUNT AND TERMS

1.1  Line of Credit Amount.

(a)  During the availability period described below, the Bank will provide a
     line of credit to the Borrower. The amount of the line of credit (the
     "Commitment") is Ten Million and no/100 Dollars ($10,000,000.00).

(b)  This is a revolving line of credit. During the availability period, the
     Borrower may repay principal amounts and reborrow them.

(c)  The Borrower agrees not to permit the outstanding principal balance of the
     line of credit to exceed the Commitment.

1.2  Availability Period. The line of credit is available between the date of
this Agreement and June 30, 2000 (the "Expiration Date") unless the Borrower is
in default.

1.3  Interest Rate.

(a)  Unless the Borrower elects an optional interest rate as described below,
     the interest rate is the Reference Rate.

(b)  The "Reference Rate" is the rate of interest publicly announced from time
     to time by the Bank in San Francisco, California, as its Reference Rate.
     The Reference Rate is set by the Bank based on various factors, including
     the Bank's costs and desired return, general economic conditions and other
     factors, and is used as a reference point for pricing some loans. The Bank
     may price loans to its customers at, above or below the Reference Rate. Any
     change in the Reference Rate shall take effect at the opening of business
     on the day specified in the public announcement of a change in the Bank's
     Reference Rate.

1.4  Repayment Terms.

(a)  The Borrower will pay interest on January 1, 1998 and on the 1st day of
     each month thereafter until payment in full of any principal outstanding
     under this line of credit.

(b)  The Borrower will repay in full all principal and any unpaid interest or
     other charges outstanding under this line of credit no later than the
     Expiration Date.

(c)  Any amount bearing interest at an optional interest rate (as described
     below) may be repaid at the end of the applicable interest period, which
     shall be no later than the Expiration Date.

1.5  Optional Interest Rates. Instead of the interest rate based on the 
Reference Rate, the Borrower may elect to have all or portions of the line of 
credit (during the availability period) bear interest at the rate(s) described 
below in Sections 1.6 and 1.7 during an interest period agreed to by the Bank 
and the Borrower. Each interest rate is a rate per year. Interest will be paid 
on the last day of each interest period, and on the first day of each month 
during the interest period. At the end of any interest period, the interest 
rate will revert to the rate based on the Reference Rate, unless the Borrower 
has designated another optional interest rate for the portion.

1.6  Offshore Rate. The Borrower may elect to have all or portions of the 
principal balance of the line of credit or of the Term Loan (as defined below) 
bear interest at the Offshore Rate plus 1.50 percentage points.

Designation of an Offshore Rate portion is subject to the following 
requirements:

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(a)  The interest period during which the Offshore Rate will be in effect will
     be one year or less. The last day of the interest period will be determined
     by the Bank using the practices of the offshore dollar inter-bank market.

(b)  Each Offshore Rate portion will be for an amount not less than Five Hundred
     Thousand Dollars ($500,000) for interest periods of 30 days or longer. For
     shorter maturities, each Offshore Rate portion will be for an amount which,
     when multiplied by the number of days in the applicable interest period, is
     not less than fifteen million (15,000,000) dollar-days. As an example of
     the foregoing, if the Borrower were to request an Offshore Rate portion for
     a period of 20 days, the amount of such Offshore Rate portion would have to
     be at least $750,000 (20 days times $750,000 equals 15,000,000
     dollar-days).

(c)  The "Offshore Rate" means the interest rate determined by the following
     formula, rounded upward to the nearest 1/100 of one percent. (All amounts
     in the calculation will be determined by the Bank as of the first day of
     the interest period.)

     Offshore Rate =    Grand Cayman Rate
                      -----------------------------
                        (1.00 - Reserve Percentage)


     Where,

     (i)   "Grand Cayman Rate" means the interest rate (rounded upward to the
           nearest 1/16th of one percent) at which the Bank's Grand Cayman
           Branch, Grand Cayman, British West Indies, would offer U.S. dollar
           deposits for the applicable interest period to other major banks in
           the offshore dollar inter-bank markets.

     (ii)  "Reserve Percentage" means the total of the maximum reserve
           percentages for determining the reserves to be maintained by member
           banks of the Federal Reserve System for Eurocurrency Liabilities, as
           defined in Federal Reserve Board Regulation D, rounded upward to the
           nearest 1/100 of one percent. The percentage will be expressed as a
           decimal, and will include, but not be limited to, marginal,
           emergency, supplemental, special, and other reserve percentages.

(d)  The Borrower may not elect an Offshore Rate with respect to any portion of
     the principal balance of the line of credit or of the Term Loan which is
     scheduled to be repaid before the last day of the applicable interest
     period.

(e)  Any portion of the principal balance of the line of credit or the Term Loan
     already bearing interest at the Offshore Rate will not be converted to a
     different rate during its interest period.

(f)  Each prepayment of an Offshore Rate portion, whether voluntary, by reason
     of acceleration or otherwise, will be accompanied by the amount of accrued
     interest on the amount prepaid; and a prepayment fee equal to the amount
     (if any) by which:

     (i)   the additional interest which would have been payable, at the
           Offshore Rate, on the amount prepaid had it not been paid until the
           last day of the interest period, exceeds

     (ii)  the interest which would have been recoverable by the Bank by placing
           the amount prepaid on deposit in the offshore dollar market for a
           period starting on the date on which it was prepaid and ending on the
           last day of the interest period for such portion, plus interest on
           such portion from the date of prepayment to the last day of the
           interest period for such portion at the rate of 1.50% per annum.

(g)  The Bank will have no obligation to accept an election for an Offshore Rate
     portion if any of the following described events has occurred and is
     continuing:

     (i)   Dollar deposits in the principal amount, and for periods equal to the
           interest period, of an Offshore Rate portion are not available in the
           offshore Dollar inter-bank markets; or

     (ii)  the Offshore Rate does not accurately reflect the cost of an Offshore
           Rate portion.

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1.7  LIBOR RATE. The Borrower may elect to have all or portions of the 
principal balance of the line of credit or of the Term Loan bear interest at 
the LIBOR Rate plus 1.50 percentage points. Designation of a LIBOR Rate portion 
is subject to the following requirements:

(a)  The interest period during which the LIBOR Rate will be in effect will be
     one year or less. The last day of the interest period and the actual number
     of days during the interest period will be determined by the Bank using the
     practices of the London inter-bank market.

(b)  Each LIBOR Rate portion will be for an amount not less than Five Hundred
     Thousand Dollars ($500,000) for interest periods of one month or longer.
     For shorter maturities, each LIBOR Rate portion will be for an amount
     which, when multiplied by the number of days in the applicable interest
     period, is not less than fifteen million (15,000,000) dollar-days. As an
     example of the foregoing, if the Borrower were to request a LIBOR Rate
     portion for a period of 20 days, the amount of such LIBOR Rate portion
     would have to be at least $750,000 (20 days times $750,000 equals
     15,000,000 dollar-days).

(c)  The "LIBOR Rate" means the interest rate determined by the following
     formula, rounded upward to the nearest 1/100 of one percent. (All amounts
     in the calculation will be determined by the Bank as of the first day of
     the interest period.)

                            London Inter-Bank Offered Rate
               LIBOR Rate = ------------------------------
                            (1.00 - Reserve Percentage)

     Where,

     (i)  "London Inter-Bank Offered Rate" means the interest rate at
           which the Bank's London Branch, London, Great Britain, would offer
           U.S. dollar deposits for the applicable interest period to other
           major banks in the London inter-bank market at approximately 11:00
           a.m. London time two (2) London Banking Days before the commencement
           of the interest period. A "London Banking Day" is a day on which the
           Bank's London Branch is open for business and dealing in offshore
           dollars.

     (ii) "Reserve Percentage" means the total of the maximum reserve
          percentages for determining the reserves to be maintained by member
          banks of the Federal Reserve System for Eurocurrency Liabilities, as
          defined in the Federal Reserve Board Regulation D, rounded upward to
          the nearest 1/100 of one percent. The percentage will be expressed as
          a decimal, and will include, but not be limited to, marginal,
          emergency, supplemental, special, and other reserve percentages.

(d)  The Borrower shall irrevocably request a LIBOR Rate portion no later than
     9:00 a.m. Phoenix time three (3) banking days before the commencement of
     the interest period.

(e)  The Borrower may not elect a LIBOR Rate with respect to any portion of the
     principal balance of the line of credit or the Term Loan which is scheduled
     to be repaid before the last day of the applicable interest period.

(f)  Any portion of the principal balance of the line of credit already bearing
     interest at the LIBOR Rate will not be converted to a different rate during
     its interest period.

(g)  Each prepayment of a LIBOR Rate portion, whether voluntary, by reason of
     acceleration or otherwise, will be accompanied by the amount of accrued
     interest on the amount prepaid and a prepayment fee as described below. A
     "prepayment", for the purposes of this section, is a payment of an amount
     on a date earlier than the scheduled payment date for such amount as
     required by this Agreement. The prepayment fee shall be equal to the amount
     (if any) by which:

     (i)  the additional interest which would have been payable, at the LIBOR
          Rate, during the interest period on the amount prepaid had it not been
          prepaid, exceeds

     (ii) the interest which would have been recoverable by the Bank by placing
          the amount prepaid on deposit in the domestic certificate of deposit
          market, the eurodollar deposit market, or other appropriate money
          market selected by the Bank, for a period starting on the date on
          which it was


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          prepaid and ending on the last day of the interest period for such
          portion, plus interest on such portion from the date of prepayment to
          the last day of the interest period for such portion at the rate of
          1.50% per annum.

(h) The Bank will have no obligation to accept an election for a LIBOR Rate
    portion if any of the following described events has occurred and is
    continuing:

    (i)  Dollar deposits in the principal amount, and for periods equal to the
         interest period of a LIBOR Rate portion are not available in the London
         inter-bank market; or

    (ii) the LIBOR Rate does not accurately reflect the cost of a LIBOR Rate
         portion.

1.8   GUARANTY OF OBLIGATIONS. The obligations of the Borrower to the Bank shall
at all times by guarantied by CompuRoute, Inc. and SVTR, Inc. ("SVTR") and each
other wholly-owned subsidiary of the Borrower which is organized under the laws
of a jurisdiction in the United States of America (each a "Wholly-Owned
Domestic Subsidiary"; CompuRoute, Inc. and SVTR, Inc., together with all
Wholly-Owned Domestic Subsidiaries and any other person or entity who may now or
hereafter guarantee any portion of the obligations of the Borrower under this
Agreement, are referred to herein collectively as the "Guarantors", and each
individually as a "Guarantor") on the Bank's standard form in an amount as may
be reasonably acceptable to the Bank. The obligations of the Borrower to the
Bank shall, at all times, also be guarantied by each entity which is presently
or later becomes a Wholly-Owned Domestic Subsidiary of the Borrower, pursuant to
a payment guaranty in form and substance reasonably satisfactory to the Bank,
which payment guaranty shall be executed within 15 days of the time any such
entity becomes a Wholly-Owned Domestic Subsidiary.

2.    TERM LOAN AMOUNT AND TERMS

2.1   THE TERM LOAN. The Bank agrees to make a term loan (the "Term Loan") to
the Borrower, in a single disbursement, to be made on or before February 28,
1999, in an amount not exceeding Three Million and no/100 Dollars
($3,000,000.00), as requested by the Borrower (the actual amount of such
disbursement is referred to herein as the "Disbursement Amount"). The proceeds
of the Term Loan shall be used by the Borrower solely for the purchase of
computer equipment, software, and associated consulting fees, or to finance
equipment already purchased by the Borrower, or to reimburse the Borrower for
the cost of the Borrower's prior purchase of computer equipment, software, and
associated consulting fees.

2.2   INTEREST RATE. The outstanding principal balance of the Term Loan shall
bear interest at the Reference Rate, unless the Borrower has elected to have all
or a portion of the outstanding balance of the Term Loan bear interest at the
Long Term Rate (defined below), the Average Life Treasuries Rate (defined
below), the LIBOR Rate plus 1.50% per annum (the "Term Loan LIBOR Rate"), or the
Offshore Rate plus 1.50% per annum (the "Term Loan Offshore Rate"; each of the
Long Term Rate, Average Life Treasuries Rate, the Term Loan Offshore Rate, and
the Term Loan LIBOR Rate is referred to herein as an "Term Loan Optional Rate";
a portion of the Term Loan bearing interest at a Term Loan Optional Rate is
referred to herein as a "Term Loan Optional Rate Portion") for all or portions
of the outstanding principal balance of the Term Loan in accordance with the
provisions of Sections 1.6, 1.7, and 2.3 of this Agreement. No interest period
for a portion of the Term Loan Optional Rate Portion may extend beyond the Term
Loan Maturity Date (defined below). At the end of any interest period for a Term
Loan Optional Rate Portion, the interest rate for that Term Loan Optional Rate
Portion will revert to the Reference Rate, unless the Borrower has elected
another Term Loan Optional Rate in accordance with the terms of this Agreement.

2.3   LONG TERM RATE. The Borrower may elect to have all or portions of the
principal balance of the Term Loan bear interest at the Long Term Rate, subject
to the following requirements (each such portion bearing interest at a Long Term
Rate is referred to herein as a "Long Term Rate Portion"):

     (a)  The interest period for a Long Term Rate Portion will be one year or
          more, as elected by the Borrower.

     (b)  The "Long Term Rate" means the fixed interest rate the Bank and the
          Borrower agree will apply to a Long Term Rate Portion during the
          applicable interest period, as provided in this Section 2.3.

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(c)  Each Long Term Rate Portion will be for an amount not less than One Hundred
     Thousand Dollars ($100,000).

(d)  No Long Term Rate Portion may be converted to a different Long Term Rate
     Portion or another Term Loan Optional Rate Portion during its Long Term
     Rate interest period.

(e)  The Borrower may prepay a Long Term Rate Portion in whole or in part in the
     minimum amount of One Hundred Thousand Dollars ($100,000). The Borrower
     will give the Bank irrevocable written notice of the Borrower's intention
     to make the prepayment, specifying the date and amount of the prepayment.
     The notice must be received by the Bank at least 5 banking days in advance
     of the prepayment. All prepayments of principal on a Long Term Rate Portion
     will be applied on the most remote principal installments of that Long Term
     Rate Portion which are then unpaid.

(f)  Each prepayment of a Long Term Rate Portion, whether voluntary, by reason
     of acceleration or otherwise, will be accompanied by payment of all accrued
     interest on the amount of the prepayment and the Prepayment Fee described
     below.

(g)  The "Prepayment Fee" will be the sum (over each Prepaid Installment related
     to such prepayment) of the amounts calculated below, where the amount
     calculated below is for a single Prepaid Installment, as follows:

     (i)     The Bank will first determine the amount of interest which would
             have accrued each month for the Prepaid Installment had it remained
             outstanding until the applicable Original Payment Date, using the
             Long Term Rate in effect for the Long Term Rate Portion being
             prepaid;

     (ii)    The Bank will then subtract from each monthly interest amount
             determined in (i), above, the amount of interest which would accrue
             for that Prepaid Installment if it were reinvested the entire
             applicable interest period, using the Long Term Rate which the Bank
             would quote to the Borrower if the Borrower had requested a Long
             Term Rate portion in the amount of such Prepaid Installment for the
             period from the date of prepayment to the Original Payment Date
             (or, in the event that the Bank would not offer a Long Term Rate
             for the period from the date of prepayment to the Original Payment
             Date, such other rate as the Bank would quote as a fixed rate for
             such period, as determined by the Bank in its reasonable
             discretion).

     (iii)   If (i) minus (ii) for the Prepaid Installment is greater than
             zero, the Bank will discount the monthly differences to the date of
             prepayment by the rate used in (ii) above. The sum of the
             discounted monthly differences is the Prepayment Fee for that
             Prepaid Installment.      

(h)  The following terms have the meanings given to them below for the purposes
     of this Section 1.4:

"Applicable Interest Period" means the interest period in effect for the Long
Term Rate Portion which is being prepaid.

"Money Market" means the domestic certificate of deposit market, the eurodollar
deposit market, or other appropriate money market selected by the Bank.

"Money Market Rate" means the fixed interest rate per annum which the Bank
determines could be obtained by reinvesting a specified Prepaid Installment in
the Money Market from the date of prepayment through the Original Payment Date.

"Original Payment Dates" mean, collectively and, as applicable, to any amount
prepaid, (1) the dates on which payments are due under Section 2.5 of this
Agreement, and (2) the last day of the applicable interest period. If a portion
of the outstanding principal of the Term Loan would have been paid later than
the end of the applicable interest period in effect at the time of such
prepayment, then the Original Payment Date for that portion will be the last day
of the applicable interest period.

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     "Prepaid Installment" means the amount of the prepayment which would have
     been paid on a single Original Payment Date.

The Bank may adjust the Money Market Rate to reflect the compounding, accrual
basis, or other related costs. Each of the rates shall be the Bank's estimate
only and the Bank is under no obligation actually to reinvest any prepayment.
The rates will be based on information from either the Telerate or Reuters
information services. The Wall Street Journal, or other information sources the
Bank deems reasonably appropriate.

     2.4  AVERAGE LIFE TREASURIES RATE. The Borrower may elect to have all or
portions of the outstanding principal balance of the Term Loan bear interest at
the Average Life Treasuries Rate (each portion which the Borrowers so elect is
referred to herein as a "Average Life Treasuries Rate Portion"), subject to the
following requirements:

          (a)  The interest period during which the Average Life Treasuries Rate
will be in effect with respect to an Average Life Treasuries Rate Portion will
be three months, six months, one year, or two years, as requested by the
Borrower and agreed to by the Bank, but shall not extend beyond the Term Loan
Maturity Date. The interest period must begin on or after the last day of the
availability period specified above.

          (b)  The "Average Life Treasuries Rate" is, at a time, the sum of (a)
1.85% per annum and (b) the weekly average yield on United States Treasury
Securities Constant Maturities Series issued by the United States Government for
a term corresponding to the term of the requested interest period, as most
recently published by the Board of Governors of the Federal Reserve System and
Federal Reserve Statistical Release H.15(519) (or any similar or successor
publication selected by the Bank).

          (c)  Each Average Life Treasuries Rate Portion will be for an amount
not less than One Hundred Thousand Dollars ($100,000).

          (d)  Any portion of the outstanding principal balance of the Term Loan
already bearing interest at a Term Loan Optional Rate will not be converted to a
different rate during its interest period.

          (e)  The Borrower may prepay an Average Life Treasuries Rate Portion
in whole or in part, but in a minimum amount of One Hundred Thousand and No/100
Dollars ($100,000.00). The Borrower will give the Bank irrevocable written
notice of the Borrower's intention to make the prepayment, specifying the date
and amount of the prepayment. The notice must be received by the Bank at least 5
banking days in advance of the prepayment. All prepayments of principal on an
Average Life Treasuries Rate Portion will be applied to the most remote
principal installment or installments then unpaid.

          (f)  Each prepayment of an Average Life Treasuries Rate Portion,
whether voluntary, by reason of acceleration or otherwise, will be accompanied
by payment of all accrued interest on the amount of the prepayment and the
prepayment fee (the "ALT Prepayment Fee") described below.

          (g)  The "ALT Prepayment Fee" will be the sum (over each ALT Prepaid
Installment related to such prepayment) of the amounts calculated below, where
the amount calculated below is for a single ALT Prepaid Installment, as follows:

               (i)    The Bank will first determine the amount of interest which
                      would have accrued each month for the ALT Prepaid
                      Installment had it remained outstanding until the
                      applicable ALT Original Payment Date, using the Average
                      Life Treasuries Rate in effect for the Average Life
                      Treasuries Rate Portion being prepaid;

               (ii)   The Bank will then subtract from each monthly interest
                      amount determined in (i), above, the amount of interest
                      which would accrue for that ALT Prepaid Installment if it
                      were reinvested the entire applicable interest period at
                      the Average Life Treasuries Rate in effect at the time of
                      prepayment.

               (iii)  If (i) minus (ii) for the ALT Prepaid Installment is
                      greater than zero, the Bank will discount the monthly
                      differences to the date of prepayment by the rate used in
                      (ii) above.


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                    The sum of the discounted monthly differences is the ALT 
                    Prepayment Fee for that ALT Prepaid Installment.

          (h)       The following definitions will also apply to the 
                    calculation of the ALT Prepayment Fee:

     "ALT Original Payment Date" mean, with respect to an ALT Prepaid 
Installment, the date on which principal of the related Average Life Treasuries 
Rate Portion would have been paid if there had been no prepayment. If a portion 
of the principal would have been paid later than the end of the interest period 
in effect at the time of prepayment, then the ALT Original Payment Date for 
that portion will be the last day of the interest period.

     "ALT Prepaid Installment" means the amount of the prepaid principal of an 
Average Life Treasuries Rate Portion which would have been paid on a single ALT 
Original Payment Date.

2.5       REPAYMENT TERMS. The Borrower will pay all accrued but unpaid 
interest on the first day of each month, beginning on the first such day to 
occur after disbursement of the proceeds of the Term Loan, and upon payment in 
full of the principal of the Term Loan. The Borrower will repay principal in 
successive monthly installments, due and payable on the first day of each 
month, beginning on the first such day to occur after disbursement of the 
proceeds of the Term Loan (such day is referred to herein as the "First 
Principal Payment Date"). Each such monthly principal installment shall be in 
the amount of $83,333.34 multiplied by the Disbursement Ratio. As used in this 
Agreement, "Disbursement Ratio" means the Disbursement Amount divided by 
$3,000,000. All payments hereunder shall be applied first to accrued and unpaid 
interest, and then to principal. On the date which is the earlier of (a) the 
date which is 35 months after the First Principal Payment Date, and (b) April 
30, 2002 (the earlier of such dates is referred to herein as the "Term Loan 
Maturity Date"), all accrued and unpaid interest and all remaining principal 
shall then be due and payable in full.

2.6       PREPAYMENTS.

          (a)       The Borrower may prepay the Term Loan in full or in part at 
any time, provided, however, that any partial prepayment shall be in an amount 
not less than One Hundred Thousand Dollars ($100,000). The Borrower will give 
the Bank irrevocable written notice of the Borrower's intention to make the 
prepayment, specifying the date and amount of the prepayment. The notice must 
be received by the Bank at least 5 banking days in advance of the prepayment. 
The prepayment will be applied to the most remote installment of principal due 
under this Agreement.

          (b)       Each prepayment of a Term Loan Optional Rate Portion, 
whether voluntary, by reason of acceleration or otherwise, which occurs on a 
date which is not the end of the interest period for such Term Loan Optional 
Rate Portion will be accompanied by the amount of accrued interest on the 
amount prepaid, and the Prepayment Fee, ALT Prepayment Fee, or other prepayment 
fee or premium described in Sections 1.6, 1.7, 2.3, and 2.4 of this Agreement.

2.7       COLLATERAL FOR THE TERM LOAN. The Borrower's obligations to the Bank 
with respect to the Term Loan shall be secured, at all times, by a first 
priority security interest in favor of the Bank on the equipment purchased with 
the proceeds of the Term Loan and on the equipment financed by the Bank with 
proceeds of the Term Loan. Prior to the disbursement of the proceeds of the 
Term Loan, and as a condition precedent to the Bank's obligation to make the 
Term Loan, the Borrower shall execute and deliver to the Bank a security 
agreement, in the form attached as Exhibit A hereto, granting to the Bank a 
security interest in the equipment purchased or to be purchased with the 
proceeds of the Term Loan, and shall execute such other documents and 
instruments as the Bank may reasonably require in order to perfect the Bank's 
security interest in such equipment. Also, as a condition precedent to the 
Bank's obligation to make the Term Loan, prior to the disbursement of the Term 
Loan, the Borrower shall furnish the Bank with all receipts and invoices 
related to the purchase of computer equipment and software and the payment of 
the related consulting fees associated with such purchase.

3.        FEES

3.1       UNUSED COMMITMENT FEE. Subject to the termination of this Agreement 
by the Borrower pursuant to the provisions of section 10.13 below, the Borrower 
agrees to pay a fee on any difference between the Commitment

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and the amount of credit it actually uses, determined by the weighted average 
loan balance maintained during the specified period. The fee will be calculated 
at 1/8% per year. This fee is due on January 1, 1999, and on the first day of 
each following quarter, until the expiration of the availability period.

3.2       REIMBURSEMENT COSTS. The Borrower agrees to reimburse the Bank for 
any reasonable expenses it incurs in the preparation of this Agreement and any 
agreement or instrument required by this Agreement. Expenses include, but are 
not limited to, reasonable attorneys' fees, including any allocated costs of 
the Bank's in-house counsel.

4.        DISBURSEMENTS, PAYMENTS AND COSTS

4.1       REQUESTS FOR CREDIT. Each request for an extension of credit will be 
made in writing in a manner acceptable to the Bank, or by another means 
acceptable to the Bank.

4.2       DISBURSEMENTS AND PAYMENTS. Each disbursement by the Bank and each 
payment by the Borrower will be:

(a)       made at the Bank's branch (or other location) selected by the Bank 
          from time to time;

(b)       made for the account of the Bank's branch selected by the Bank from 
          time to time;

(c)       made in immediately available funds, or such other type of funds 
          selected by the Bank;

(d)       evidenced by records kept by the Bank. In addition, the Bank may, at
          its discretion, require the Borrower to sign one or more promissory
          notes.

4.3       TELEPHONE AND TELEFAX AUTHORIZATION.

(a)       The Bank may honor telephone or telefax instructions for advances or
          repayments or for the designation of optional interest rates given by
          any one of the individual signer(s) of this Agreement or a person or
          persons authorized in writing by any one of the signer(s) of this
          Agreement.

(b)       Advances will be deposited in and repayments will be withdrawn from
          the Borrower's account number 252-352-661, or such other of the
          Borrower's accounts with the Bank as designated in writing by the
          Borrower.

(c)       The Borrower indemnifies and excuses the Bank (including its officers,
          employees, and agents) from all liability, loss, and costs in
          connection with any act resulting from telephone or telefax
          instructions it reasonably believes are made by any individual
          authorized by the Borrower to give such instructions, provided,
          however, that this indemnification shall not extend to the gross
          negligence or willful misconduct of the Bank. This indemnity and
          excuse will survive this Agreement's termination.

4.4       DIRECT DEBIT.

(a)       The Borrower agrees that interest and principal payments and any fees
          will be deducted automatically on the due date from Borrower's account
          number 252-352-661, or such other of the Borrower's accounts with the
          Bank as designated in writing by the Borrower (the "Designated
          Account").

(b)       The Bank will debit the account on the dates the payments become due.
          If a due date does not fall on a banking day, the Bank will debit the
          account on the first banking day following the due date.

(c)       The Borrower will maintain sufficient funds in the account on the
          dates the Bank enters debits authorized by this Agreement. If there
          are insufficient funds in the account on the date the Bank enters any
          debt authorized by this Agreement, the debit will be reversed.

(d)       The Borrower may terminate this direct debit arrangement at any time
          by sending written notice to the Bank at the address specified at the
          end of this Agreement.

4.5       BANKING DAYS. Unless otherwise provided in this Agreement, a banking
day is a day other than a Saturday or a Sunday on which the Bank is open for
business in Arizona. For amounts bearing interest at the

                                                                               8
<PAGE>   9
Offshore Rate or the LIBOR Rate (if any), a banking day is a day other than a 
Saturday or a Sunday on which the Bank is open for business in California and 
is dealing in offshore dollars. All payments and disbursements which would be 
due on a day which is not a banking day will be due on the next banking day. 
All payments received on a day which is not a banking day will be applied to 
the credit on the next banking day.

4.6       TAXES. The Borrower will not deduct any taxes from any payments it 
makes to the Bank. If any government authority imposes any taxes on any 
payments made by the Borrower, the Borrower will pay the taxes and will also 
pay to the Bank, at the time interest is paid, any additional amount which the 
Bank specifies as necessary to preserve the after-tax yield the Bank would have 
received if such taxes had not been imposed. Upon request by the Bank, the 
Borrower will confirm that it has paid the taxes by giving the Bank official 
tax receipts (or notarized copies) within 30 days after the due date. However, 
the Borrower will not pay the Bank's net income taxes.

4.7       ADDITIONAL COSTS. The Borrower will pay the Bank, on demand, for the 
Bank's reasonable costs or losses arising from any statute or regulation, or 
any request or requirement of a regulatory agency. The costs and losses will be 
allocated to the credit facilities extended under this Agreement in a manner 
determined by the Bank, using any reasonable method. The costs include the 
following:

(a)       any reserve or deposit requirements; and

(b)       any capital requirements relating to the Bank's assets and 
          commitments for credit.

4.8       INTEREST CALCULATION. Except as otherwise stated in this Agreement, 
all interest and fees, if any, will be computed on the basis of a 360 day year 
and the actual number of days elapsed. This results in more interest or a 
higher fee than if a 365-day year is used.

4.9       INTEREST ON LATE PAYMENTS. At the Bank's sole option in each 
instance, any amount not paid when due under this Agreement (including 
interest) shall bear interest from the due date at the Reference Rate plus 2.00 
percentage points. This may result in compounding of interest.

4.10      DEFAULT RATE. Upon the occurrence and during the continuation of any 
default under this Agreement, advances under this Agreement will at the option 
of the Bank bear interest at a rate per annum which is 2.00 percentage points 
higher than the rate of interest otherwise provided under this Agreement. This 
will not constitute a waiver of any default.

5.        CONDITIONS The Bank must receive the following items, in form and 
content acceptable to the Bank, before it is required to extend any credit to 
the Borrower under this Agreement:

5.1       AUTHORIZATIONS. Evidence that the execution, delivery and performance 
by the Borrower and any Guarantor of this Agreement and any instrument or 
agreement required under this Agreement have been duly authorized.

5.2       GOVERNING DOCUMENTS. A copy of the Borrower and each Guarantor's 
articles of incorporation.

5.3       INSURANCE. Evidence of insurance coverage, as required in the 
"Covenants" section of this Agreement.

5.4       GUARANTIES. Guaranties signed by CompuRoute, Inc. and SVTR, Inc. on 
the Bank's standard form in an amount as may be reasonably acceptable to the 
Bank.

5.5       PAYMENT OF FEES. Payment of all accrued and unpaid reasonable 
expenses incurred by the Bank as required by the paragraph entitled 
"Reimbursement Costs".

6.        REPRESENTATIONS AND WARRANTIES When the Borrower signs this 
Agreement, and until the Bank is repaid in full, the Borrower makes the 
following representations and warranties. Each request for an extension of 
credit constitutes a renewed representation.

                                                                               9
<PAGE>   10
6.1      ORGANIZATION OF BORROWER. The Borrower is a corporation duly formed 
and existing under the laws of the state where organized.

6.2      AUTHORIZATION. This Agreement, and any instrument or agreement 
required hereunder, are within the Borrower's or Guarantor's powers, have been 
duly authorized, and do not conflict with any of their respective 
organizational papers.

6.3      ENFORCEABLE AGREEMENT. This Agreement, and each other agreement or 
document executed and delivered to the Bank in connection with this Agreement, 
is a legal, valid and binding agreement of the Borrower, enforceable against 
the Borrower in accordance with its terms, and any instrument or agreement 
required hereunder, when executed and delivered, will be similarly legal, 
valid, binding and enforceable, except as such enforceability may be subject to 
or impaired by bankruptcy, insolvency, reorganization, arrangement, moratorium, 
fraudulent conveyance, or other similar laws relating to or affecting the 
rights of creditors generally.

6.4      GOOD STANDING. In each state in which the Borrower does business, it 
is properly licensed, in good standing, and, where required, in compliance with 
fictitious name statutes.

6.5      NO CONFLICTS. This Agreement does not conflict with any law, material 
agreement, or material obligation by which the Borrower is bound.

6.6      FINANCIAL INFORMATION. All financial and other information that has 
been or will be supplied to the Bank is:

(a)      sufficiently complete to give the Bank accurate knowledge of the 
         Borrower's and any Guarantor's financial condition in all material
         respects.

(b)      in form and content reasonably required by the Bank.

(c)      in compliance with all government regulations that apply.

6.7      LAWSUITS. There is no lawsuit, tax claim or other dispute pending or, 
to the Borrower's knowledge, threatened against the Borrower, which, if lost, 
would materially impair the Borrower's financial condition or ability to repay 
the credit facilities extended under this Agreement, except as have been 
disclosed in writing to the Bank prior to the date of this Agreement.

6.8      PERMITS, FRANCHISES. The Borrower possesses all permits, memberships, 
franchises, contracts and licenses required and all trademark rights, trade 
name rights, patent rights and fictitious name rights necessary to enable it to 
conduct the business in which it is now engaged and where the failure to do so 
would cause a material adverse effect on the financial condition of the 
Borrower and its subsidiaries, taken as a whole, or would materially affect the 
ability of the Borrower to repay its obligations to the Bank.

6.9      OTHER OBLIGATIONS. The Borrower is not in default on any obligation 
for borrowed money (where such default would allow the creditor of Borrower to 
accelerate the payment of the obligation or to foreclose on any material 
security for such obligations), any purchase money obligation (where such 
default would allow the creditor of Borrower to accelerate the payment of the 
obligation or to foreclose on any material security for such obligation) or any 
other material lease, commitment, contract, instrument or obligation.

6.10     INCOME TAX RETURNS. The Borrower has no knowledge of any material 
pending assessments or adjustments of its income tax for any year, except as 
have been disclosed in writing to the Bank.

6.11     NO EVENT OF DEFAULT. There is no event which is, or with notice or 
lapse of time or both would be, a default under this Agreement.

6.12     ERISA PLANS.

(a)      To the Borrower's knowledge, the Borrower has fulfilled its
         obligations, if any, under the minimum funding standards of ERISA and
         the Code with respect to each Plan and is in compliance in all material
         respects with the presently applicable provisions of ERISA and the
         Code, and has not incurred any material liability with respect to any
         Plan under Title IV of ERISA.


                                                                              
                                                                              10
<PAGE>   11
(b) To the Borrower's knowledge, no reportable event has occurred under Section
    4043(b) of ERISA for which the PBGC requires 30 day notice.

(c) To the Borrower's knowledge, no action by the Borrower to terminate or
    withdraw from any Plan has been taken and no notice of intent to terminate a
    Plan has been filed under Section 4041 of ERISA.

(d) No proceeding has been commenced with respect to a Plan under Section 4042
    of ERISA, and, to the Borrower's knowledge, no event has occurred or
    condition exists which might constitute grounds for the commencement of such
    a proceeding.

(e) The following terms have the meanings indicated for purposes of this
    Agreement:

    (i)   "Code" means the Internal Revenue Code of 1986, as amended from time
            to time.

    (ii)  "ERISA" means the Employee Retirement Income Security Act of 1974, as
            amended from time to time.

"PBGC" means the Pension Benefit Guaranty Corporation established pursuant to
Subtitle A of Title IV of ERISA.

    (iv)  "Plan" means any employee pension benefit plan maintained or
            contributed to by the Borrower and insured by the Pension Benefit
            Guaranty Corporation under Title IV of ERISA.

6.13  LOCATION OF BORROWER.  The Borrower's place of business (or, if the
Borrower has more than one place of business, its chief executive office) is
located at the address listed under the Borrower's signature on this Agreement.

6.14  REPRESENTATIONS CONCERNING THE YEAR 2000. The Borrower is in the process
of performing a comprehensive review of its Year 2000 issues and has completed
its review of internal systems (information technology ("IT") and non-IT). The
majority of the Borrower's application software programs are currently being
replaced with Oracle applications which are Year 2000 compliant. The Borrower
estimates the status of progress on these internal systems as follows:  (a) 50%
for IT systems, and (b) 50% for non-IT systems. The Borrower presently believes
that with modifications and updates to existing software and the implementation
of the Oracle applications, the Year 2000 problem will not pose significant
operational problems for the Borrower's internal systems. The Borrower also
believes that remediation costs to become Year 2000 compliant, excluding the
costs associated with the replacement Oracle applications, are not material. The
Borrower is also continuing to verify the Year 2000 readiness of third parties
(vendors and customers) with whom the Borrower has material relationships. The
Borrower is not able to determine the effect on the Borrower's rules of
operations, liquidity, and financial condition in the event the Borrower's
material vendors and customers are not Year 2000 compliant. The Borrower will
continue to monitor the progress of its material vendors and customers and
formulate a contingency plan at that point in time when the Borrower believes a
material vendor or customer will not be compliant.
  
7.    COVENANTS  The Borrower agrees, so long as credit is available under
this Agreement and until the Bank is repaid in full:

7.1   USE OF PROCEEDS.  To use the proceeds of the credit only for working
capital and general corporate purposes, including capital expenditures and
acquisitions.


7.2   FINANCIAL INFORMATION.  To provide the following financial
information and statements and such additional information as reasonably
requested by the Bank from time to time:

(a)       Within 90 days of the Borrower's fiscal year end, the Borrower's
          annual financial statements, including a compliance certificate. These
          financial statements must be audited (with an unqualified opinion) by
          a Certified Public Accountant ("CPA") acceptable to the Bank. The
          statements shall be prepared on a consolidated basis.

(b)       Copies of the Borrower's Form 10-K Annual Report within 90 days of
          fiscal year end.


                                                                              11
<PAGE>   12
(c) Copies of the Borrower's Form 10-Q Quarterly Report within 45 days of
    quarter end.

(d) Within 45 days of the end of each fiscal year and within 30 days after the 
    end of each of the first three fiscal quarters, a Quarterly Compliance 
    Certificate, in form and content reasonably satisfactory to the Bank, (i) 
    certifying that during such quarter and as of the end of such quarter, no 
    defaults exist or existed under this Agreement, or if such defaults exist 
    or existed, specifying such defaults, and (ii) certifying the value of the 
    ratios described in sections 7.3, 7.4, and 7.5 of this Agreement and showing
    the calculation of such ratios as of the end of such fiscal quarter, in such
    detail as the Bank may request.

7.3 QUICK RATIO. To maintain on a consolidated basis a ratio of quick assets to 
current liabilities of at least 1.25:1.00, measured quarterly (outstandings 
under the revolving line of credit to be including as current liabilities).

"Quick assets" means cash, short-term cash investments, net trade receivables 
and marketable securities.

7.4 TOTAL LIABILITIES TO TANGIBLE NET WORTH RATIO. To maintain on a consolidated
basis a ratio of Total Liabilities to Tangible Net Worth not exceeding
1.00:1.00, measured quarterly.

"Total Liabilities" means the sum of current liabilities plus long term 
liabilities (including, without limitation, liabilities of the type described 
in section 7.7(f).

"Tangible net worth" means the gross book value of the Borrower's assets 
(excluding goodwill, patents, trademarks, trade names, organization expense, 
treasury stock, unamortized debt discount and expense, deferred research and 
development costs, deferred marketing expenses, and other like intangibles and 
monies due from affiliates, officers, directors or shareholders of the 
Borrower) less total liabilities, including but not limited to accrued and 
deferred income taxes, and any reserves against assets.

7.5 DEBT COVERAGE RATIO. To maintain on a consolidated basis a debt coverage 
ratio of at least 2.00:1.00, measured quarterly.

"Debt Coverage ratio" means the ratio of cash flow to total interest expense 
and the current portion of long term debt. "Cash flow" is defined as net income 
from operations and investments, after taxes, plus total interest expense, 
depreciation, amortization, any non-recurring charges which are write-offs of 
any research and development assets purchased as a part of a business 
acquisition, and other non-cash charges.

This ratio will be calculated at the end of each fiscal quarter, using the
results of that quarter and each of the 3 immediately preceding quarters. The
current portion of long term debt will be measured as of the last day of the
preceding fiscal year.

7.6 NET LOSSES. Borrower is not to incur a net loss (on a consolidated basis) in
any two consecutive quarters or on a fiscal year end basis (excluding any
non-recurring charges which are write-offs of any research and development
assets purchased as a part of a business acquisition, and excluding the losses
for the fiscal year 1998, in the approximate amount of $4,593,000, attributable
to the discontinued operations of SVTR).

7.7 OTHER DEBTS. Not to have outstanding or incur, or permit any of its 
consolidated subsidiaries to have outstanding or incur, any direct or 
contingent debts or lease obligations (other than those to the Bank), or become 
liable for the debts of others without the Bank's written consent. This does 
not prohibit:

(a) Acquiring goods, supplies, or merchandise on normal trade credit.

(b) Endorsing negotiable instruments received in the usual course of business.

(c) Obtaining surety bonds in the usual course of business.

(d) Debts, guarantees, and lines of credit and leases in existence on the date
    of this Agreement disclosed in writing to the Bank, including, without
    limitation, those described in Exhibit B, and any refinancings or refundings
    thereof.


                                                                              12
<PAGE>   13
(e) Additional debts secured in full by purchase money security interests or 
    arising pursuant to capital leases or secured by real property, to the
    extent permitted by section 7.8 below.

(f) Additional unsecured debts, including contingent obligations, of the 
    Borrower which arise from acquisitions of other business permitted under 
    this Agreement, to the extent that the aggregate of the Borrower's and its 
    consolidated subsidiaries' unsecured debt (including contingent 
    obligations) does not exceed Three Million and no/100 Dollars 
    ($3,000,000.00) outstanding at any one time.

(g) Prepaid expenses accrued in the ordinary course of business.

(h) Direct or contingent debts or lease obligations consented to by the Bank in 
    writing, in the Bank's sole discretion.

(i) Indebtedness or obligations to any of the wholly-owned domestic 
    subsidiaries of the Borrower.

(j) Guaranties of any of the obligations which are permitted by this Section 
    7.7.

7.8 OTHER LIENS. Not to create, assume, or allow, and not to permit any of its 
consolidated or other wholly-owned subsidiaries to create, assume, or allow, 
any security interest or lien (including, without limitation, liens on any 
accounts receivable or inventory and any judicial liens) on property the 
Borrower or any of its consolidated and other wholly-owned subsidiaries now or 
later owns, except, on a consolidated basis for the Borrower and its 
consolidated subsidiaries:

(a) Deeds of trust and security agreements in favor of the Bank.

(b) Liens for taxes, assessments, or governmental charges and levies not yet due
    (as to which the period of grace, if any, related thereto has not yet 
    expired) or which are being contested in good faith.

(c) Liens outstanding on the date of this Agreement disclosed in writing to the 
    Bank, including, without limitation, those described on Exhibit C.

(d) Additional liens which are purchase money security interests or liens 
    arising pursuant to capital lease obligations or which are liens on real 
    property and lease obligations, to the extent that the aggregate of the 
    Borrower's and its consolidated subsidiaries' secured debt does not exceed 
    Eight Million and no/100 Dollars ($8,000,000.00).

(e) Liens of materialmen, mechanics, carriers, warehousemen, processors, or 
    landlords for labor, materials, supplies, or rentals incurred in the 
    ordinary course of business.

(f) Liens consisting of deposits or pledges made in the ordinary course of 
    business in connection with, or to secure payment of, obligations under 
    workers compensation, unemployment insurance, or similar legislation and 
    utility deposits.

(g) Liens securing the performance of bids, tenders, statutory obligations, 
    surety and appeal bonds, and other obligations of like nature, incurred in 
    the ordinary course of business.

(h) Liens constituting encumbrances in the nature of zoning restrictions, 
    easements, and rights of restriction of record on the use of real 
    property, which in the aggregate do not materially detract from the value 
    of such property.

(i) Liens consented to by the Bank in writing, in the Bank's sole discretion.

7.9 DIVIDENDS. Not to declare or pay any dividends or distributions on any of 
its shares except dividends payable in capital stock of the Borrower, and not 
to purchase, redeem or otherwise acquire for value any of its shares, or create 
any sinking fund in relation thereto; provided, however, that the foregoing 
shall not restrict the ability of the Borrower to purchase, redeem, or 
otherwise acquire for value its shares of stock in connection with (1) the 
warrant to purchase 39,275 shares of common stock issued to Swartz Investments, 
Inc., (2) any resolution of the case styled Cerprobe Corporation v. William E. 
Mayer and Carol Mayer, C. 98-4034, filed in the United States

                                                                              13
<PAGE>   14
District Court in and for the Northern District of California, to the extent
that such resolution does not require the Borrower to purchase, redeem, or
otherwise acquire more than 150,000 shares of the Borrower's capital stock, (3)
any employee stock purchase plan, employee stock option plan, or 401(k) plan, or
(4) an effort to avoid dilution of the stock of the Borrower as the result of
any stock option plan, as long as, after giving effect to such purchase,
redemption, or other acquisition for value, the Borrower remains in compliance
with the financial covenants set forth in this Agreement.

7.10   NOTICES TO BANK. To promptly notify the Bank in writing of:

(a)    any lawsuit over Five Hundred Thousand and no/100 Dollars ($500,000.00)
       against the Borrower not adequately covered by insurance;

(b)    any substantial dispute between the Borrower or any Guarantor and any
       government authority;

(c)    any failure to comply with this Agreement;

(d)    any material adverse change in the Borrower's or any Guarantor's
       financial condition or operations taken as a whole;

(e)    any change in the Borrower's name, legal structure, place of business, or
       chief executive office if the Borrower has more than one place of
       business;

(f)    any investment made, after the date hereof, in any subsidiaries,
       affiliates, or joint ventures, within 15 days of the date of such
       investment;

(g)    any acquisition of any business (or a substantial portion thereof),
       whether by purchase of assets or acquisition of stock or otherwise,
       within 15 days of the date of such acquisition;

(h)    any termination of the business of any Guarantor, other than SVTR.

7.11   BOOKS AND RECORDS. To maintain adequate books and records.

7.12   AUDITS. Upon reasonable prior notice, to allow the Bank and its agents to
inspect the Borrower's properties and examine, audit, and make copies of books
and records at any reasonable time during normal business hours. If any of the
Borrower's properties, books or records are in the possession of a third party,
the Borrower authorizes that third party to permit the Bank or its agents to
have access to perform inspections or audits and to respond to the Bank's
requests for information concerning such properties, books and records.

7.13   COMPLIANCE WITH LAWS. To comply with all material requirements and to
comply with the laws, (including any fictitious name statute), regulations, and
orders of any government body with authority over the Borrower's business.

7.14   PRESERVATION OF RIGHTS. To maintain and preserve all rights, privileges,
and franchises the Borrower now has, the loss of which would have a material
adverse effect upon the Borrower and its subsidiaries taken as a whole.

7.15   MAINTENANCE OF PROPERTIES. To make any repairs, renewals, or replacements
reasonably necessary to keep the Borrower's properties in good working
condition, consistent with past practices of the Borrower.

7.16   COOPERATION. To take any action reasonably requested by the Bank to carry
out the intent of this Agreement.

7.17   INSURANCE. To maintain insurance as is usual for the business it is in.

7.18   ADDITIONAL NEGATIVE COVENANTS. Not to, without the Bank's written
consent:

(a)    engage in any business activities substantially different from the
       Borrower's present business.

                                                                              14
<PAGE>   15

(b)  liquidate or dissolve the Borrower's business.

(c)  enter into any consolidation or merger or other combination, unless both
     (i) the Borrower is the surviving entity and (ii) no other default under
     this Agreement would result therefrom.

(d)  lease or dispose of all or a substantial part of the Borrower's business or
     the Borrower's assets, except in the ordinary course of business.

(e)  acquire or purchase a business or substantially all of its assets whether
     by acquisition or merger, unless (i) the entity being acquired is in a
     similar or related business or industry; (ii) the acquisition is not
     considered hostile; (iii) no event of default exists prior to or as a
     result of the acquisition, and (iv) within 30 days after such acquisition,
     the Borrower provides the Bank such financial information as the Bank may
     reasonably request regarding the proposed acquisition.

(f)  sell or otherwise dispose of any assets for less than fair market value or
     enter into any sale and leaseback agreement covering any of its fixed or
     capital assets, except for the proposed sale and leaseback agreement
     related to (i) Borrower's Dallas, Texas, facility, or (ii) the Borrower's
     headquarters located in Gilbert, Arizona.

7.19 ERISA PLANS. To give prompt written notice to the Bank of:

(a)  The occurrence of any reportable event under Section 4043(b) of ERISA for
     which the PBGC requires 30 day notice.

(b)  Any action by the Borrower to terminate or withdraw from a Plan or the
     filing of any notice of intent to terminate under Section 4041 of ERISA.

(c)  Any notice of noncompliance made with respect to a Plan under Section
     4041(b) of ERISA.

(d)  The commencement of any proceeding with respect to a Plan under Section
     4042 of ERISA.

7.20 DEPOSITS. The Borrower shall maintain investments and cash deposits at the
Bank or at an affiliate of the Bank in an amount equal to or exceeding the
outstanding principal balance of the Term Loan; provided, however, that the Bank
or such affiliate of the Bank, as applicable, shall pay the Borrower a
reasonable amount of interest with respect to such investments and cash
deposits.

7.21 INVESTMENTS IN SUBSIDIARIES. The aggregate investments of the Borrower made
after the date hereof in entities which are subsidiaries, affiliates, or joint
ventures, but which are not Guarantors, shall not at any time exceed
$10,000,000.

7.22 OUT OF DEBT PERIOD. During each period of 12 consecutive calendar months,
the aggregate outstanding principal amount of the line of credit described in
Article 1 of this Agreement shall be $0.00 for each of 30 consecutive days in
such period of 12 calendar months.

8.   HAZARDOUS WASTE The Borrower will indemnify and hold harmless the Bank from
any loss or liability directly or indirectly arising out of the use, generation,
manufacture, production, storage, release, threatened release, discharge,
disposal or presence of a hazardous substance. This indemnity will apply whether
the hazardous substance is on, under or about the Borrower's property or
operations or property leased to the Borrower. The indemnity includes but is not
limited to reasonable attorney's fees (including the reasonable estimate of the
allocated cost of in-house counsel and staff). The indemnity extends to the
Bank, its parent, subsidiaries and all of their directors, officers, employees,
agents, successors, attorneys and assigns. For these purposes, the term
"hazardous substances" means any substance which is or becomes designated as
"hazardous" or "toxic" under any federal, state or local law. This indemnity
will survive repayment of the Borrower's obligations to the Bank.


                                                                              15
<PAGE>   16
9.        DEFAULT If any of the following events occur, the Bank may do one or
more of the following: declare the Borrower in default, stop making any
additional credit available to the Borrower, and require the Borrower to repay
its entire debt immediately and without prior notice. If an event of default
occurs under the paragraph entitled "Bankruptcy" below with respect to the
Borrower, the entire debt outstanding under this Agreement will automatically be
due immediately.

9.1       FAILURE TO PAY. The Borrower fails to make any payment of principal 
or interest due under this Agreement within two (2) days of the date when due; 
or the Borrower fails to make any other payment under this Agreement within 
five (5) days of the date when due.

9.2       FALSE INFORMATION. The Borrower or any Guarantor has given the Bank 
information or representations that are false or misleading in any material 
respects.

9.3       BANKRUPTCY. The Borrower or any Guarantor files a bankruptcy 
petition, a bankruptcy petition is filed against the Borrower or any Guarantor, 
or the Borrower or any Guarantor makes a general assignment for the benefit of 
creditors and, in the case of an involuntary bankruptcy, such filing is not 
dismissed within 60 days of such filing.

9.4       RECEIVERS. A receiver or similar official is appointed for the 
Borrower's or any Guarantor's business, or the business of the Borrower is 
terminated.

9.5       LAWSUITS. Any lawsuit or lawsuits are filed on behalf of one or more
trade creditors against the Borrower in an aggregate amount of Five Hundred
Thousand and no/100 Dollars ($500,000.00) or more in excess of any insurance
coverage.

9.6       JUDGMENTS. Any judgments or arbitration awards are entered against 
the Borrower or any Guarantor, or the Borrower or any Guarantor enters into any 
settlement agreements with respect to any litigation or arbitration, in an 
aggregate amount of Five Hundred Thousand and no/100 Dollars ($500,000.00) or 
more in excess of any insurance coverage, and any such judgment or award shall 
continue undischarged, unstayed, or unbonded for a period of 60 days.

9.7       GOVERNMENT ACTION. Any government authority takes action that the 
Bank believes materially adversely affects the Borrower's and the Guarantors', 
taken as a whole, financial condition or ability to repay its obligations to 
the Bank under this Agreement or any guarantee of obligations under this 
Agreement.

9.8       MATERIAL ADVERSE CHANGE. A material adverse change occurs in the 
Borrower's and the Guarantors', taken as a whole, financial condition, 
properties or prospects, or ability to repay the extensions of credit under 
this Agreement.

9.9       CROSS-DEFAULT. Any default occurs under any agreement in connection 
with any credit the Borrower or any Guarantor has obtained from anyone else or 
which the Borrower or any Guarantor has guaranteed, and such creditor has the 
right to accelerate such credit or to foreclose on any material collateral 
therefor.

9.10      DEFAULT UNDER RELATED DOCUMENTS. Any guaranty or other document 
required by this Agreement is violated or no longer in effect, as the result of 
any action by any party other than the Bank.

9.11      OTHER BANK AGREEMENTS. The Borrower or any Guarantor fails to meet 
the conditions of, or fails to perform any material obligation under any other 
material agreement the Borrower or Guarantor has with the Bank or any affiliate 
of the Bank.

9.12      ERISA PLANS. The occurrence of any one or more of the following 
events with respect to the Borrower, provided such event or events could 
reasonably be expected, in the reasonable judgment of the Bank, to subject the 
Borrower to any tax, penalty or liability (or any combination of the foregoing) 
which, in the aggregate, could have a material adverse effect on the financial 
condition of the Borrower and its subsidiaries, taken as a whole, with respect 
to a Plan:

(a)  A reportable event shall occur with respect to a Plan which is, in the
     reasonable judgment of the Bank, likely to result in the termination of
     such Plan for purposes of Title IV or ERISA.

                                                                              16
<PAGE>   17
(b)  Any Plan termination (or commencement of proceedings to terminate a Plan)
     or the Borrower's full or partial withdrawal from a Plan.

9.13      OTHER BREACH UNDER AGREEMENT. The Borrower fails to meet the 
conditions of, or fails to perform any obligation under, any term of this 
Agreement not specifically referred to in this Article, and, if such failure is 
susceptible of being cured, such failure is not cured within 30 days of the 
earlier of (a) the earliest date on which the Borrower knew or reasonably 
should have known of such failure, and (b) the date on which the Bank notifies 
the Borrower of such failure.

10.       ENFORCING THIS AGREEMENT; MISCELLANEOUS

10.1      GAAP. Except as otherwise stated in this Agreement, all financial 
information provided to the Bank and all financial covenants will be made under 
generally accepted accounting principles, consistently applied.

10.2      ARIZONA LAW. This Agreement is governed by Arizona law.

10.3      SUCCESSORS AND ASSIGNS. This Agreement is binding on the Borrower's 
and the Bank's successors and assignees. The Borrower agrees that it may not 
assign this Agreement without the Bank's prior consent. The Bank may sell 
participations in or assign this loan, and may exchange financial information 
about the Borrower with actual or potential participants or assignees. If a 
participation is sold or the loan is assigned, the purchaser will have the 
right of set-off against the Borrower.

10.4      ARBITRATION.

(a)       This section concerns the resolution of any controversies or claims
          between the Borrower and the Bank, including but not limited to those
          that arise from:

          (i)       This Agreement (including any renewals, extensions or 
                    modifications of this Agreement);

          (ii)      Any document, agreement or procedure related to or 
                    delivered in connection with this Agreement;

          (iii)     Any violation of this Agreement; or

          (iv)      Any claims for damages resulting from any business conducted
                    between the Borrower and the Bank, including claims for
                    injury to persons, property or business interests (torts).

(b)       At the request of the Borrower or the Bank, any such controversies or
          claims will be settled by arbitration in accordance with the United
          States Arbitration Act. The United States Arbitration Act will apply
          even though this Agreement provides that it is governed by Arizona
          law.

(c)       Arbitration proceedings will be administered by the American
          Arbitration Association and will be subject to its commercial rules of
          arbitration.

(d)       For purposes of the application of the statute of limitations, the
          filing of an arbitration pursuant to this section is the equivalent of
          the filing of a lawsuit, and any claim or controversy which may be
          arbitrated under this section is subject to any applicable statute of
          limitations. The arbitrators will have the authority to decide whether
          any such claim or controversy is barred by the statute of limitations
          and, if so, to dismiss the arbitration on that basis.

(e)       If there is a dispute as to whether an issue is arbitrable, the
          arbitrators will have the authority to resolve any such dispute.

(f)       The decision that results from an arbitration proceeding may be 
          submitted to any authorized court of law to be confirmed and enforced.

(g)       This provision does not limit the right of the Borrower or the Bank 
          to:

          (i)       exercise self-help remedies such as setoff;

                                                                              17
<PAGE>   18
          (ii)      foreclose against or sell any real or personal property 
                    collateral; or

          (iii)     act in a court of law, before, during or after the 
                    arbitration proceeding to obtain:

                    (A)       an interim remedy; and/or

                    (B)       additional or supplementary remedies.

(h)       The pursuit of or a successful action for interim, additional or
          supplementary remedies, or the filing of a court action, does not
          constitute a waiver of the right of the Borrower or the Bank,
          including the suing party to submit the controversy or claim to
          arbitration if the other party contests the lawsuit.

(i)       If the Bank forecloses against any real property securing this
          Agreement, the Bank has the option to exercise the power of sale under
          the deed of trust or mortgage, or to proceed by judicial foreclosure.

10.5      SEVERABILITY; WAIVERS. If any part of this Agreement is not 
enforceable, the rest of the Agreement may be enforced. The Bank retains all 
rights, even if it makes a loan after default. If the Bank waives a default, it 
may enforce a later default. Any consent or waiver under this Agreement must be 
in writing.

10.6      ATTORNEYS' FEES. The Borrower shall reimburse the Bank for any 
reasonable costs and reasonable attorneys' fees incurred by the Bank in 
connection with the enforcement or preservation of any rights or remedies under 
this Agreement and any other documents executed in connection with this 
Agreement, and including any amendment, waiver, "workout" or restructuring 
under this Agreement. In the event of a lawsuit or arbitration proceeding, the 
prevailing party is entitled to recover reasonable costs and reasonable 
attorneys' fees incurred in connection with the lawsuit or arbitration 
proceeding, as determined by the court or arbitrator. As used in this section, 
"attorneys' fees" includes the allocated costs of in-house counsel.

10.7      ONE AGREEMENT. This Agreement and any related security or other 
agreements required by this Agreement, collectively:

(a)       represent the sum of the understandings and agreements between the 
          Bank and the Borrower concerning this credit; and

(b)       replace any prior oral or written agreements between the Bank and the 
          Borrower concerning this credit; and

(c)       are intended by the Bank and the Borrower as the final, complete and 
          exclusive statement of the terms agreed to by them.

In the event of any conflict between this Agreement and any other agreements 
required by this Agreement, this Agreement will prevail.

10.8      EXCHANGE OF INFORMATION. The Borrower agrees that the Bank may 
exchange financial information about the Borrower with BankAmerica Corporation 
affiliates and other related entities.

10.9      USURY LAWS. This section covers the transactions described in this 
Agreement and any other agreements with the Bank or its affiliates executed in 
connection with this Agreement, to the extent they are subject to the Arizona 
usury laws (the "Transactions"). The Borrower understands and believes that the 
Transactions comply with the Arizona usury laws. However, if any interest or 
other charges paid or payable in connection with the Transactions are ever 
determined to exceed the maximum amount permitted by law, the Borrower agrees 
that:

(a)       the amount of interest or other charges payable by the Borrower
          pursuant to the Transactions shall be reduced to the maximum amount
          permitted by law; and

(b)       any excess amount previously collected from the Borrower in connection
          with the Transactions which exceeded the maximum amount permitted by
          law will be credited against the then outstanding principal balance.
          If the outstanding principal balance has been repaid in full, the
          excess amount paid will be refunded to the Borrower.

                                                                              18
<PAGE>   19
All fees, charges, goods, things in action or any other sums or things of value,
other than interest at the interest rate described in this Agreement, paid or
payable by the Borrower (collectively the "Additional Sums"), that may be deemed
to be interest with respect to the Transactions, shall, for the purpose of any
laws of the State of Arizona that may limit the maximum amount of interest to be
charged with respect to the Transactions, be payable by Borrower as, and shall
be deemed to be, additional interest. For such purposes only, the agreed upon
and "contracted for rate of interest" of the Transactions shall be deemed to be
increased by the rate of interest resulting from the Additional Sums.

10.10     NOTICES. All notices required under this Agreement shall be personally
delivered or sent by first class mail, postage prepaid, to the addresses on the
signature page of this Agreement, or to such other addresses as the Bank and the
Borrower may specify from time to time in writing.

10.11     HEADINGS. Article and section headings are for reference only and
shall not affect the interpretation or meaning of any provisions of this
Agreement.

10.12     COUNTERPARTS. This Agreement may be executed in as many counterparts
as necessary or convenient, and by the different parties on separate
counterparts each of which, when so executed, shall be deemed an original but
all such counterparts shall constitute but one and the same agreement.

10.13     TERMINATION. Notwithstanding any provision of this Agreement, this
Agreement may be terminated by the Borrower provided that the Borrower pays all
principal, interest, and other sums and fees then outstanding under this
Agreement.

This Agreement is executed as of the date stated at the top of the first page.



BANK OF AMERICA NATIONAL TRUST AND          CERPROBE CORPORATION
SAVINGS ASSOCIATION

/s/Kathleen Sowa                            /s/Randal L. Buness
--------------------                        ------------------------
                                            Name:  RANDAL L. BUNESS
                                            Title: VICE PRESIDENT & CFO
By: Kathleen Sowa, Vice President
                                            ------------------------
                                            Name:
                                            Title:

Address where notices to the Bank           Address where notices to the
are to be sent:                             Borrower are to be sent:

Phoenix Commercial & Industrial, #8211      1150 North Fiesta Blvd.
101 North First Avenue                      Gilbert, Arizona 85233-2237
Phoenix, Arizona 85003                      
                                            with a copy to:
     
                                            O'Connor Cavanagh
                                            One East Camelback Road, Suite 1100
                                            Phoenix, Arizona 85012
                                            Attention: Karl A. Freeburg, Esq.
                                            Facsimile No.: (602) 263-2900


                                       19
<PAGE>   20
                                   EXHIBIT A

[BANK OF AMERICA LOGO]
               
                                                  SECURITY AGREEMENT (EQUIPMENT)
-------------------------------------------------------------------------------


     THIS SECURITY AGREEMENT (this "Agreement") is entered into as of December
   , 1998, between CERPROBE CORPORATION (the "Borrower") and BANK OF AMERICA 
NATIONAL TRUST AND SAVINGS ASSOCIATION (the "Bank").

1.   THE SECURITY. The Borrower hereby assigns and grants to the Bank a 
security interest in the following described property ("Collateral"):

A.    All of the machinery, furniture, fixtures and other equipment of
      every type which is purchased or financed with, or for the purchase of
      which the Borrower is reimbursed for with, the proceeds of the Term Loan
      as defined in the Business Loan Agreement, dated as of December   , 1998,
      between the Borrower and the Bank, as amended from time to time (the "Loan
      Agreement"), including, without limitation, the equipment and other
      property listed on Exhibit A attached hereto and incorporated herein,
      together with any and all replacements thereof and substitutions therefor.

B .   All documents now owned or hereafter acquired by Borrower covering any
      of the above-described property.

C.    All rights under contracts of insurance now owned or hereafter acquired by
      Borrower covering any of the above-described property.

D.    All proceeds, product, rents and profits now owned or hereafter acquired 
      by Borrower of any of the above-described property.

2.   THE INDEBTEDNESS. The Collateral secures and will secure all Indebtedness 
of Borrower to Bank. For the purpose of this Agreement, "Indebtedness" means 
all of the Borrower's obligations under the Loan Agreement with respect to the 
Term Loan (as such term is defined in the Loan Agreement).

3.   BORROWER'S COVENANTS. Borrower covenants and warrants that unless 
compliance is waived by Bank in writing:

A.    Borrower will properly preserve the Collateral; defend the Collateral
      against any adverse claims and demands; and keep accurate books and
      records relating to the Collateral (the "Books and Records"), time during
      normal business hours for the purpose of examination and for the purpose
      of making copies of any portion thereof.)

B.    Borrower has notified Bank in writing of, and will notify Bank in writing 
      prior to any change in, the locations of (i) Borrower's  place of business
      or Borrower's chief executive office if Borrower has more than one place
      of business, and (ii) any Collateral, including the Books and Records.

C.    Borrower will notify Bank in writing prior to any change in Borrower's 
      name, identity or organizational documents.

                                                                             A-1
      
<PAGE>   21
D.   Borrower will maintain and keep in force insurance covering Collateral
     designated by Bank against fire and extended coverages. Such insurance
     shall require losses to be paid on a replacement cost basis, be issued by
     insurance companies reasonably acceptable to Bank and include a loss
     payable endorsement in favor of Bank in a form acceptable to Bank.
     
E.   Borrower has not granted and will not grant any security interest in any of
     the Collateral except to Bank, and will keep the Collateral free of all
     liens, claims, security interests and encumbrances of any kind or nature
     except the security interest of Bank and other liens permitted by 
     Section 7.8 of the Loan Agreement.

F.   Borrower will not sell, lease, agree to sell or lease, or otherwise dispose
     of any Collateral or remove any Collateral from Borrower's place of
     business except with the prior written consent of Bank, except for any
     obsolete equipment having a value of less than $5,000.00 disposed of or
     sold in the ordinary course of Borrower's business.

G.   Borrower will promptly notify Bank in writing of any event which materially
     affects the value of any Collateral, the ability of Borrower or Bank to
     dispose of any Collateral, or the rights and remedies of Bank in relation
     thereto, including, but not limited to, the levy of any legal process
     against any Collateral.

H.   If any Collateral is or becomes the subject of any registration certificate
     or negotiable document of title, including any warehouse receipt or bill of
     lading, Borrower shall immediately deliver such document to Bank.

I.   Borrower will not attach any Collateral to any real property or fixture in
     a manner which might cause such Collateral to become a part thereof unless
     Borrower first obtains the written consent of any owner, holder of any lien
     on the real property or fixture, or other person having an interest in such
     property to the removal by Bank of the Collateral from such real property
     or fixture. Such written consent shall be in form and substance acceptable
     to Bank and shall provide that Bank has no liability to such owner, holder
     of any lien, or any other person.

4.   ADDITIONAL OPTIONAL REQUIREMENTS. Borrower agrees that Bank may at its
option at any time, whether or not Borrower is in default:

A.   Require Borrower to deliver to Bank (i) copies of or extracts from the
     Books and Records, and (ii) information on any contracts or other matters
     affecting the Collateral.

B.   Examine the Collateral, including the Books and Records, and make copies of
     or extracts from the Books and Records, and for such purposes enter at any
     reasonable time upon the property where any Collateral or any Books and
     Records are located in accordance with Section 3A. above.

C.   Notify any person of Bank's interest in the Collateral to the extent
     necessary to continue the perfection or priority of the security interest
     of Bank in the Collateral.

D.   After a default under this Agreement or the Loan Agreement, demand and
     collect any proceeds of the Collateral. In connection therewith Borrower
     irrevocably authorizes Bank to endorse or sign Borrower's name on all
     checks, drafts, collections, receipts and other documents, and to take
     possession of and open the mail addressed to Borrower and remove therefrom
     any proceeds of the Collateral.

5.   DEFAULTS. Any one or more of the following shall be a default hereunder:

A.   Borrower fails to make any payment of principal or interest due under the
     Loan Agreement within two

                                                                             A-2
<PAGE>   22
      (2) days of the date when due; or the Borrower fails to make any other 
      payment of Indebtedness within five (5) days of the date when due.

B.    Borrower breaches any term, provision, material warranty or material
      representation under this Agreement not specifically referred to in this
      Section 5, and, if such breach is susceptible of being cured, such breach
      is not cured within thirty (30) days of the earlier of (i) the earliest
      date on which the Borrower knew or reasonably should have known of such
      breach, and (ii) the date on which the Borrower notifies the Bank of such
      breach; or Borrower breaches any term, provision, material warranty, or
      material representation under any other obligation of Borrower to Bank,
      and such breach is not cured within any applicable cure period.


C.    Any custodian, receiver or trustee is appointed to take possession,
      custody or control of all or a substantial portion of the property of
      Borrower or of any guarantor of any Indebtedness.

D.    Borrower or any guarantor of any Indebtedness becomes insolvent, or is
      generally not paying or admits in writing its inability to pay its debts
      as they become due, fails in business, makes a general assignment for the
      benefit of creditors, dies or commences any case, proceeding or other
      action under any bankruptcy or other law for the relief of, or relating
      to, debtors and, in the case of the commencement of an involuntary
      bankruptcy proceeding, such proceeding is not dismissed within 60 days of
      the filing thereof.

E.    Any case, proceeding or other action is commenced against Borrower or any
      guarantor of any Indebtedness under any bankruptcy or other law for the
      relief of, or relating to, debtors and, in the case of the commencement of
      an involuntary bankruptcy proceeding, such proceeding is not dismissed
      within 60 days of the filing thereof.

F.    Any involuntary lien of any kind or character attaches to any material 
      portion of the Collateral.

G.    Any financial statements, certificates, schedules, or other information
      now or hereafter furnished by Borrower to Bank proves false or incorrect
      in any material respect.


6.    BANK'S REMEDIES AFTER DEFAULT. In the event of any default Bank may do 
any one or more of the following:

A.    Declare any Indebtedness immediately due and payable, without notice or 
      demand.

B.    Enforce the security interest given hereunder pursuant to the Arizona 
      Uniform Commercial Code and any other applicable law.

C.    Require Borrower to assemble the Collateral, including the Books and
      Records, and make them available to Bank at a place designated by Bank.

D.    Enter upon the property where any Collateral, including any Books and
      Records, are located and take possession of such Collateral and such Books
      and Records, and use such Collateral and such Books and Records relating
      thereto, if Bank deems such use necessary or advisable in order to take
      possession of, hold, preserve, process, assemble, prepare for sale or
      lease, market for sale or lease, sell or lease, or otherwise dispose of,
      any Collateral.

E.    Grant extensions and compromise or settle claims for less than face value
      relating to any proceeds of the Collateral, all without prior notice to
      Borrower.

F.    Use or transfer any of Borrower's rights and interests in any Intellectual
      Property now owned or hereafter acquired by Borrower, if Bank deems such
      use or transfer necessary or advisable in order to


                                                                             A-3








<PAGE>   23
     take possession of, hold, preserve, process, assemble, prepare for sale or
     lease, market for sale or lease, sell or lease, or otherwise dispose of,
     any Collateral. Borrower agrees that any such use or transfer shall be
     without any additional consideration to Borrower. As used in this
     paragraph, "Intellectual Property" includes, but is not limited to, all
     trade secrets, computer software, service marks, trademarks, trade names,
     trade styles, copyrights, patents, applications for any of the foregoing,
     customer lists, working drawings, instructional manuals, and rights in
     processes for technical manufacturing, packaging and labeling, in which
     Borrower has any right or interest, whether by ownership, license, contract
     or otherwise.

G.   Have a receiver appointed by any court of competent jurisdiction to take 
     possession of the Collateral.

H.   Take such measures as Bank may deem necessary or advisable to take
     possession of, hold, preserve, process, assemble, insure, prepare for sale
     or lease, market for sale or lease, sell or lease, or otherwise dispose of,
     any Collateral, and Borrower hereby irrevocably constitutes and appoints
     Bank as Borrower's attorney-in-fact to perform all acts and execute all
     documents in connection therewith.

7.   MISCELLANEOUS

A.   Any waiver, express or implied, of any provision hereunder and any delay or
     failure by Bank to enforce any provision shall not preclude Bank from
     enforcing any such provision thereafter.

B.   Borrower shall, at the reasonable request of Bank, execute such other
     agreements, documents, instruments or financing statements in connection
     with this Agreement as Bank may reasonably deem necessary. A carbon,
     photostat or other reproduction of this Agreement or any financing
     statement is sufficient as a financing statement.

C.   All notes, security agreements, subordination agreements and other
     documents executed by Borrower or furnished to Bank in connection with this
     Agreement must be in form and substance reasonably satisfactory to Bank.

D.   This Agreement shall be governed by and construed according to the laws of
     the State of Arizona, to the jurisdiction of which the parties hereto
     submit.

E.   All rights and remedies herein provided are cumulative and not exclusive of
     any rights or remedies otherwise provided by law. Any single or partial
     exercise of any right or remedy shall not preclude the further exercise
     thereof or the exercise of any other right or remedy.

F.   All terms not defined herein are used as set forth in the Arizona Uniform
     Commercial Code.

G.   In the event of any action by Bank to enforce this Agreement or to protect
     the security interest of Bank in the Collateral, or to preserve, process,
     assemble, insure, prepare for sale of lease, market for sale or lease, sell
     or lease, or otherwise dispose of, any Collateral, Borrower agrees to pay
     immediately all reasonable costs and expenses thereof, together with
     reasonable attorney's fees and allocated costs for in-house legal services.

BANK OF AMERICA NATIONAL TRUST
AND SAVINGS ASSOCIATION


_________________________________
Kathleen P. Sowa, Vice President


                                                                             A-4
<PAGE>   24
CERPROBE CORPORATION




____________________________
Name:
Title:




                                                                             A-5
<PAGE>   25
[BANK OF AMERICA LOGO]                                         PAYMENT GUARANTY


   
                                                 Borrower: Cerprobe Corporation
    
                                                                      
                                                    Guarantor: CompuRoute, Inc.
-------------------------------------------------------------------------------

(1)    For valuable consideration, the undersigned ("Guarantor") unconditionally
       guarantees and promises to pay to Bank of America National Trust and
       Savings Association ("Bank"), or order, on demand, in lawful money of the
       United States, any and all indebtedness of Cerprobe Corporation, a
       Delaware corporation ("Borrower") to Bank. The word "indebtedness" is
       used herein in its most comprehensive sense and includes any and all
       advances, debts, obligations and liabilities of Borrower, heretofore,
       now, or hereafter made, incurred or created, whether voluntary or
       involuntary arising pursuant to the Business Loan Agreement of
       December__, 1998, executed by Borrower and Bank, or any document executed
       in connection therewith, as such loan agreement and other documents may
       be amended, modified, extended, or renewed from time to time (said loan
       agreement, together with such other documents, as amended, modified,
       extended, or renewed from time to time are collectively referred to
       herein as the "Loan Documents"), whether due or not due, absolute or
       contingent, liquidated or unliquidated, determined or undetermined, and
       whether Borrower may be liable individually or jointly with others, or
       whether recovery upon such indebtedness may be or hereafter become barred
       by any statute of limitations, or whether such indebtedness may be or
       hereafter become otherwise unenforceable.

(2)    The liability of Guarantor under this Guaranty (exclusive of liability
       under any other guaranties executed by Guarantor) shall not exceed at any
       one time the total of (a) Thirteen Million and No/100 Dollars
       ($13,000,000.00), for the principal amount of the indebtedness and (b)
       all interest, fees, and other reasonable costs and expenses relating to
       or arising out of the indebtedness or such part of the indebtedness as
       shall not exceed the foregoing limitation. Bank may permit the
       indebtedness of Borrower to exceed Guarantor's liability, and may apply
       any amounts received from any source, other than from Guarantor, to the
       unguaranteed portion of Borrower's indebtedness. Any payment by Guarantor
       shall not reduce their maximum obligation hereunder, unless written
       notice to that effect be actually received by Bank at or prior to the
       time of such payment.

(3)    The obligations hereunder are joint and several, and independent of the
       obligations of Borrower, and a separate action or actions may be brought
       and prosecuted against Guarantor whether action is brought against
       Borrower or whether Borrower be joined in any such action or actions and
       regardless of whether a trustee's sale is held under any deed of trust,
       if any, securing the indebtedness or regardless of whether a judicial
       foreclosure sale is held if any deed of trust, if any, securing the
       indebtedness is judicially foreclosed as a mortgage. Guarantor waives the
       benefit of any statute of limitations affecting their liability
       hereunder.

(4)    Guarantor authorizes Bank, without notice or demand and without affecting
       their liability hereunder, from time to time, either before or after
       revocation hereof, to (a) renew, compromise, extend, accelerate or
       otherwise change the time for payment of, or otherwise change the terms
       of the indebtedness or any part thereof, including increase or decrease
       of the rate of interest thereon; (b) receive and hold security for the
       payment of this Guaranty or the indebtedness guaranteed, and exchange,
       enforce, waive, release, fail to perfect, sell, or otherwise dispose of
       any such security; (c) apply such security and direct the order or manner
       of sale thereof as Bank in its discretion may determine, except to the
       extent specifically prohibited by law; and (d) release or substitute any
       one or more of the endorsers or Guarantor.

(5)    Guarantor waives any right to require Bank to (a) proceed against
       Borrower; (b) proceed against or exhaust any security held from Borrower;
       or (c) pursue any other remedy in Bank's power whatsoever. Guarantor
       waives any defense arising by reason of any disability or other defense
       of Borrower, or the cessation from any cause whatsoever of the liability
       of Borrower, or any claim that Guarantor's obligations exceed or are more
       burdensome than those of Borrower. Guarantor waives any benefit of the
       provisions of Arizona Revised Statutes Sections 12-1641 and 12-1642 et
       seq., and Rule 17(f) of the Arizona Rules of Civil Procedures, which set
       forth certain rights and obligations among guarantors, debtors and
       creditors, to the extent applicable. Guarantor waives any right of
       subrogation, reimbursement, indemnification, and contribution
       (contractual, statutory or otherwise), including without limitation, any
       claim or right of subrogation under the Bankruptcy
<PAGE>   26
      Code (Title 11 of the U.S. Code) or any successor statute, arising from
      the existence or performance of this Guaranty and Guarantor waives any
      right to enforce any remedy which Bank now has or may hereafter have
      against Borrower, and waives any benefit of, and any right to participate
      in, any security now or hereafter held by Bank. Bank may foreclose, either
      by judicial foreclosure or by exercise of power of sale, any deed of trust
      securing the indebtedness, and, even though the foreclosure may destroy or
      diminish Guarantor's rights against Borrower, Guarantor shall be liable to
      Bank for any part of the indebtedness remaining unpaid after the
      foreclosure. Guarantor waives any benefit of any statutory provision
      limiting the right of Bank to recover a deficiency judgment, or to
      otherwise proceed, against any person or entity obligated for payment of
      the indebtedness, after any judicial foreclosure sale or trustee's sale of
      any collateral securing the indebtedness including, without limitation,
      the benefits, if any, of Arizona Revised Statutes Section 33-814, except
      to the extent otherwise required by law. Guarantor waives any homestead or
      exemption rights. Guarantor waives all presentments, demands for
      performance, notices of nonperformance, protests, notices of protest,
      notices of dishonor, and notices of acceptance of this Guaranty and of the
      existence, creation, or incurring of new or additional indebtedness.

(6)   Guarantor acknowledges and agrees that it shall have the sole
      responsibility for obtaining from Borrower such information concerning
      Borrower's financial conditions or business operations as Guarantor may
      require, and that Bank has no duty at any time to disclose to Guarantor
      any information relating to the business operations or financial
      conditions of Borrower.

(7)   In addition to Bank's rights of setoff, to secure all of Guarantor's
      obligations hereunder, Guarantor assigns and grants to Bank a security
      interest in all moneys, securities and other property of Guarantor now or
      hereafter in the possession of Bank, and all deposit accounts of Guarantor
      maintained with Bank, and all proceeds thereof. Upon material default or
      material breach of any of Guarantor's obligations to Bank, Bank may apply
      any deposit account to reduce the indebtedness, and may foreclose any
      collateral as provided in the Uniform Commercial Code and in any security
      agreements between Bank and Guarantor.

(8)   Any obligations of Borrower or Guarantor, nor or hereafter existing,
      including but not limited to any obligations to Guarantor as subrogees of
      Bank or resulting from Guarantor's performance under this Guaranty, are
      hereby subordinated to the indebtedness. Such obligations of Borrower to
      Guarantor if Bank so requests shall be enforced and performance received
      by Guarantor as trustee for Bank and the proceeds thereof shall be paid
      over to Bank on account of the indebtedness of Borrower to Bank, but
      without reducing or affecting in any manner the liability of Guarantor
      under the provisions of this Guaranty.

(9)   This Guaranty shall automatically terminate upon payment of all
      obligations under the Loan Documents and cancellation of the Loan
      Documents.

(10)  It is not necessary for Bank to inquire into the powers of Borrower or of
      the officers, directors, or agents acting or purporting to act on behalf
      of Borrower, and any indebtedness made or created in reliance upon the
      professed exercise of such powers shall be guaranteed hereunder.

(11)  Bank may, without notice to Guarantor and without affecting Guarantor's
      obligations hereunder, assign the indebtedness and this Guaranty, in whole
      or in part. Guarantor agrees that Bank may disclose to any prospective
      purchaser and any purchaser of all or part of the indebtedness any and all
      information in Bank's possession concerning Guarantor, this Guaranty and
      any security for this Guaranty.

(12)  Guarantor agrees to pay all reasonable attorneys' fees, the reasonable
      allocated costs of Bank's in-house counsel, and all other reasonable costs
      and expenses which may be incurred by Bank in the enforcement of this
      Guaranty, including without limitation all reasonable costs and necessary
      disbursements in any legal action or arbitration proceeding.

(13)  This Guaranty shall be governed by and construed according to the laws of
      the State of Arizona, to the jurisdiction of which the parties hereto
      submit.

(14)  (a)  Any controversy or claim between or among the parties, including but
      not limited to those arising out of or relating to this Guaranty or any
      agreements or instruments relating hereto or delivered in connection
      herewith and any claim based on or arising from an alleged tort, shall at
      the request of any party be determined by arbitration. The arbitration
      shall be conducted in accordance with the United States Arbitration

                                                                               2
<PAGE>   27
     Act (Title 9, U.S. Code), notwithstanding any choice of law provision in
     this Guaranty, and under the Commercial Rules of the American Arbitration
     Association ("AAA"). The arbitrator(s) shall give effect to statutes of
     limitation in determining any claim. Any controversy concerning whether an
     issue is arbitrable shall be determined by the arbitrator(s). Judgment upon
     the arbitration award may be entered in any court having jurisdiction. The
     institution and maintenance of an action for judicial relief or pursuit of
     a provisional or ancillary remedy shall not constitute a waiver of the
     right of any party, including the plaintiff, to submit the controversy or
     claim to arbitration if any other party contests such action for judicial
     relief.

     (b) No provision of this paragraph shall limit the right of any party to
     this Guaranty to exercise self-help remedies such as setoff, to foreclose
     against or sell any real or personal property collateral or security, or to
     obtain provisional or ancillary remedies from a court of competent
     jurisdiction before, after, or during the pendency of any arbitration or
     other proceeding. The exercise of a remedy does not waive the right of
     either party to resort to arbitration. At Bank's option, foreclosure under
     a deed of trust or mortgage may be accomplished either by exercise of power
     of sale under the deed of trust or mortgage or by judicial foreclosure.


Executed this            day of                 , 1998.
              ----------        ----------------



CompuRoute, Inc.

By: /s/  Randal L. Buness
   ----------------------

Name:  Randal L. Buness
     --------------------

Title:   CFO
      -------------------


Dallas, Texas
Tax I.D. No.: 91-1752910


Address for notices to Bank:
Bank of America National Trust and Savings Association
Phoenix C&I, Unit #8211
101 North First Avenue
Phoenix, Arizona 85003

                                                                               3
<PAGE>   28

[BANK OF AMERICA LOGO]                  
                                                                PAYMENT GUARANTY
                                                  Borrower: Cerprobe Corporation
                                                           Guarantor: SVTR, Inc.




(1)    For valuable consideration, the undersigned ("Guarantor") unconditionally
       guarantees and promises to pay to Bank of America National Trust and
       Savings Association ("Bank"), or order, on demand, in lawful money of the
       United States, any and all indebtedness of Cerprobe Corporation, a
       Delaware corporation ("Borrower") to Bank. The word "indebtedness" is
       used herein in its most comprehensive sense and includes any and all
       advances, debts, obligations and liabilities of Borrower, heretofore,
       now, or hereafter made, incurred or created, whether voluntary or
       involuntary arising pursuant to the Business Loan Agreement of December
          , 1998, executed by Borrower and Bank, or any document executed in
       connection therewith, as such loan agreement and other documents may be
       amended, modified, extended, or renewed from time to time (said loan
       agreement, together with such other documents, as amended, modified,
       extended, or renewed from time to time are collectively referred to
       herein as the "Loan Documents"), whether due or not due, absolute or
       contingent, liquidated or unliquidated, determined or undetermined, and
       whether Borrower may be liable individually or jointly with others, or
       whether recovery upon such indebtedness may be or hereafter become barred
       by any statue of limitations, or whether such indebtedness may be or
       hereafter become otherwise unenforceable.

(2)    The liability of Guarantor under this Guaranty (exclusive of
       liability under any other guaranties executed by Guarantor) shall not
       exceed at any one time the total of (a) Thirteen Million and No/100
       Dollars ($13,000,000.00), for the principal amount of the indebtedness
       and (b) all interest, fees, and other reasonable costs and expenses
       relating to or arising out of the indebtedness or such part of the
       indebtedness as shall not exceed the foregoing limitation. Bank may
       permit the indebtedness of Borrower to exceed Guarantor's liability, and
       may apply any amounts received from any source, other than from
       Guarantor, to the unguaranteed portion of Borrower's indebtedness. Any
       payment by Guarantor shall not reduce their maximum obligation
       hereunder, unless written notice to that effect be actually received by
       Bank at or prior to the time of such payment.

(3)    The obligations hereunder are joint and several, and independent of the
       obligations of Borrower, and a separate action or actions may be brought
       and prosecuted against Guarantor whether action is brought against
       Borrower or whether Borrower be joined in any such action or actions and
       regardless of whether a trustee's sale is held under any deed of trust,
       if any, securing the indebtedness or regardless of whether a judicial
       foreclosure sale is held if any deed of trust, if any, securing the
       indebtedness is judicially foreclosed as a mortgage. Guarantor waives the
       benefit of any statute of limitations affecting their liability
       hereunder.

(4)    Guarantor authorizes Bank, without notice or demand and without affecting
       their liability hereunder, from time to time, either before or after
       revocation hereof, to (a) renew, compromise, extend, accelerate or
       otherwise change the time for payment of, or otherwise change the terms
       of the indebtedness or any part thereof, including increase or decrease
       of the rate of interest thereon; (b) receive and hold security for the
       payment of this Guaranty or the indebtedness guaranteed, and exchange,
       enforce, waive, release, fail to perfect, sell, or otherwise dispose of
       any such security; (c) apply such security and direct the order or manner
       of sale thereof as Bank in its discretion may determine, except to the
       extent specifically prohibited by law; and (d) release or substitute any
       one or more of the endorsers or Guarantor.

(5)    Guarantor waives any right to require Bank to (a) proceed against
       Borrower; (b) proceed against or exhaust any security held from Borrower;
       or (c) pursue any other remedy in Bank's power whatsoever. Guarantor
       waives any defense arising by reason of any disability or other defense
       of Borrower, or the cessation from any cause whatsoever of the liability
       of Borrower, or any claim that Guarantor's obligations exceed or are more
       burdensome than those of Borrower. Guarantor waives any benefit of the
       provisions of Arizona Revised Statutes Sections 12-1641 and 12-1642 et
       seq., and Rule 17(f) of the Arizona Rules of Civil Procedures, which set
       forth certain rights and obligations among guarantors, debtors and
       creditors, to the extent applicable. Guarantor waives any right of
       subrogation, reimbursement, indemnification, and contribution
       (contractual, statutory or otherwise), including without limitation, any
       claim or right of subrogation under the Bankruptcy





                                                                               1
<PAGE>   29
         Code (Title 11 of the U.S. Code) or any successor statute, arising from
         the existence or performance of this Guaranty and Guarantor waives any
         right to enforce any remedy which Bank now has or may hereafter have
         against Borrower, and waives any benefit of, and any right to
         participate in, any security now or hereafter held by Bank. Bank may
         foreclose, either by judicial foreclosure or by exercise of power of
         sale, any deed of trust securing the indebtedness, and, even though the
         foreclosure may destroy or diminish Guarantor's rights against
         Borrower, Guarantor shall be liable to Bank for any part of the
         indebtedness remaining unpaid after the foreclosure. Guarantor waives
         any benefit of any statutory provision limiting the right of Bank to
         recover a deficiency judgment, or to otherwise proceed, against any
         person or entity obligated for payment of the indebtedness, after any
         judicial foreclosure sale or trustee's sale of any collateral securing
         the indebtedness including, without limitation, the benefits, if any,
         of Arizona Revised Statutes Section 33-814, except to the extent
         otherwise required by law. Guarantor waives any homestead or exemption
         rights. Guarantor waives all presentments, demands for performance,
         notices of nonperformance, protests, notices of protest, notices of
         dishonor, and notices of acceptance of this Guaranty and of the
         existence, creation, or incurring of new or additional indebtedness.

(6)      Guarantor acknowledges and agrees that it shall have the sole
         responsibility for obtaining from Borrower such information concerning
         Borrower's financial conditions or business operations as Guarantor may
         require, and that Bank has no duty at any time to disclose to Guarantor
         any information relating to the business operations or financial
         conditions of Borrower.

(7)      In addition to Bank's rights of setoff, to secure all of Guarantor's
         obligations hereunder, Guarantor assigns and grants to Bank a security
         interest in all moneys, securities and other property of Guarantor now
         or hereafter in the possession of Bank, and all deposit accounts of
         Guarantor maintained with Bank, and all proceeds thereof. Upon material
         default or material breach of any of Guarantor's obligations to Bank,
         Bank may apply any deposit account to reduce the indebtedness, and may
         foreclose any collateral as provided in the Uniform Commercial Code and
         in any security agreements between Bank and Guarantor.

(8)      Any obligations of Borrower to Guarantor, now or hereafter existing,
         including but not limited to any obligations to Guarantor as subrogees
         of Bank or resulting from Guarantor's performance under this Guaranty,
         are hereby subordinated to the indebtedness. Such obligations of
         Borrower to Guarantor if Bank so requests shall be enforced and
         performance received by Guarantor as trustee for Bank and the proceeds
         thereof shall be paid over to Bank on account of the indebtedness of
         Borrower to Bank, but without reducing or affecting in any manner the
         liability of Guarantor under the provisions of this Guaranty.

(9)      This Guaranty shall automatically terminate upon payment of all
         obligations under the Loan Documents and cancellation of the Loan
         Documents.

(10)     It is not necessary for Bank to inquire into the powers of Borrower or
         of the officers, directors, or agents acting or purporting to act on
         behalf of Borrower, and any indebtedness made or created in reliance
         upon the professed exercise of such powers shall be guaranteed
         hereunder.

(11)     Bank may, without notice to Guarantor and without affecting Guarantor's
         obligations hereunder, assign the indebtedness and this Guaranty, in
         whole or in part. Guarantor agrees that Bank may disclose to any
         prospective purchaser and any purchaser of all or part of the
         indebtedness any and all information in Bank's possession concerning
         Guarantor, this Guaranty and any security for this Guaranty.

(12)     Guarantor agrees to pay all reasonable attorneys' fees, the reasonable
         allocated costs of Bank's in-house counsel, and all other reasonable
         costs and expenses which may be incurred by Bank in the enforcement of
         this Guaranty, including without limitation all reasonable costs and
         necessary disbursements in any legal action or arbitration proceeding.

(13)     This Guaranty shall be governed by and construed according to the laws
         of the State of Arizona, to the jurisdiction of which the parties
         hereto submit.

(14)     (a)      Any controversy or claim between or among the parties,
         including but not limited to those arising out of or relating to this
         Guaranty or any agreements or instruments relating hereto or delivered
         in connection herewith and any claim based on or arising from an
         alleged tort, shall at the request of any party be determined by
         arbitration. The arbitration shall be conducted in accordance with the
         United States Arbitration


                                                                               2
<PAGE>   30
     Act (Title 9, U.S. Code), notwithstanding any choice of law provision in
     this Guaranty, and under the Commercial Rules of the American Arbitration
     Association ("AAA"). The arbitrator(s) shall give effect to statutes of
     limitation in determining any claim. Any controversy concerning whether an
     issue is arbitrable shall be determined by the arbitrator(s). Judgment upon
     the arbitration award may be entered in any court having jurisdiction. The
     institution and maintenance of an action for judicial relief or pursuit of
     a provisional or ancillary remedy shall not constitute a waiver of the
     right of any party, including the plaintiff, to submit the controversy or
     claim to arbitration if any other party contests such action for judicial
     relief.

     (b)  No provision of this paragraph shall limit the right of any party to
     this Guaranty to exercise self-help remedies such as setoff, to foreclose
     against or sell any real or personal property collateral or security, or to
     obtain provisional or ancillary remedies from a court of competent
     jurisdiction before, after, or during the pendency of any arbitration or
     other proceeding. The exercise of a remedy does not waive the right of
     either party to resort to arbitration. At Bank's option, foreclosure under
     a deed of trust or mortgage may be accomplished either by exercise of power
     of sale under the deed of trust or mortgage or by judicial foreclosure.


Executed this         day of            , 1998.
             ---------       -----------   

SVTR, Inc.
By: /s/ Randal L. Buness
    --------------------
                     
Name: RANDAL L. BUNESS
        
Title: CFO


Tax I.D. No.: 66-0516446

Address for notices to Bank:
Bank of America National Trust and Savings Association
Phoenix C&I, Unit #8211
101 North First Avenue
Phoenix, Arizona 85003






                                       3