SUBLEASE

1.  PARTIES

     This Sublease is entered into this 13th day of August, 1998, by and 
between NIKE, Sublessor, and Protocol Systems, Inc., Sublessee, as a 
Sublease under the Master Lease dated December 13, 1990, as amended by 
documents dated 12/3/92 and 2/13/96, entered into by NIKE as Lessor, 
and Sublessor under this Sublease as Lessee; a copy of the Master is 
attached hereto as Exhibit 'A'.

2.  PROVISIONS CONSTITUTING SUBLEASE

A.  This Sublease is subject to all of the terms and conditions of 
the Master Lease in Exhibit 'A' and Sublessee shall assume and 
perform the obligations of the Lessee in said Master Lease, to the 
extent said terms and conditions are applicable to the Premises 
subleased pursuant to this Sublease.  Sublessee shall not commit or 
permit to be committed on the Premises any act or omission which 
shall violate any term or conditions of the Master Lease.  In the 
event of termination of Sublessor's interest as Lessee under the 
Master Lease for any reason, then this Sublease shall terminate 
coincidentally therewith without any liability of Sublessor to 
Sublessee.

B.  All of the terms and conditions contained in the Master Lease 
are incorporated herein except for paragraphs 1, 2, 3, 4A, 4B, 29 
and 30 as terms and conditions of this Sublease (with each reference 
therein to Lessor and Lessee to be deemed to refer to Sublessor and 
Sublessee) and along with all of the following paragraphs set out in 
this Sublease, shall be complete terms and conditions of this 
Sublease.

3.  PREMISES

     Sublessor leases to Sublessee and Sublessee hires from Sublessor 
the following described Premises together with the appurtenances, 
situated in the City of Beaverton, County of Washington, State of 
Oregon, commonly known and described as 8605 SW Creekside Place, and 
consisting of approximately 14,000 sq. feet in southwest portion of 
building consisting of portions of the first and second floors shown on 
the drawing attached as Exhibit B.

4.  RENTAL

     Sublessee shall pay to Sublessor as rent for the Premises in 
advance on the first day of calendar month of the term of this Sublease 
without deduction, offset, prior notice or demand, in lawful money of 
the United States the sum of thirteen thousand five hundred and eighty 
dollars ($13,580.00).  If the commencement date is not the first of the 
month, or if the Sublease termination date is not the last day of the 
month, a prorata monthly installment shall be paid at the then current 
rate for the fractional month during which the Sublease commences 
and/or terminates.  Receipt of $6,133.00 is hereby acknowledged for 
rental for the first partial month (14/31), and the additional amount 
of N/A as non-interest bearing security for performance under this 
Sublease.  In this event, Sublessee has performed all of the terms and 
conditions of this Sublease throughout the term, upon Sublessee 
vacating the Premises, the amount paid as a security deposit shall be 
returned to Sublessee after first deducting any sums owing to 
Sublessor.  Monthly payment includes full cost of physical space and 
proportionate share of common area charges; Sublessee to pay all 
directly billed utility charges.  The rent component is the sum of 
$10,640 per month (computed at the rate of $.76 per rentable square 
foot) and CAM charges of $2,940 per month (computed at the rate of .21 
per rentable square foot per month).

5. TERM

A.  The term of this Sublease shall be for a period of approximately 
eight (8) months, commencing on August 17, 1998, and ending on March 
31, 1999.

B.  In the event Sublessor is unable to deliver possession of the 
Premises at the commencement of the term, Sublessor shall not be 
liable for any damage caused thereby, nor shall this Sublease be 
void or voidable but Sublessee shall not be liable for rent until 
such time as Sublessor offers to deliver possession of the Premises 
to Sublessee, but the term hereof shall not be extended by such 
delay.  If Sublessee, with Sublessor's consent, takes possession 
prior to commencement of the term, Sublessee shall do so subject to 
all covenants and conditions hereof and shall pay rent for the 
period ending with the commencement of the term at the same rental 
as that prescribed for the first month of the term prorated at the 
rate of 1/30th thereof per day.

6.  USE

     Sublessee shall use the Premises for general office and for no 
other purpose without written consent of Sublessor.

7.  NOTICES

All notices or demands of any kind required or desired to be given by 
Sublessor or Sublessee hereunder shall be in writing and shall be in 
the United States mail, certified and registered, postage prepaid, 
addressed to the Sublessor, or Sublessee, respectively, at the address 
set forth after their signatures at the end of this Sublease.  
Addresses of the parties may be changed by notice as provided herein.  
Notices may also be sent by private courier service or facsimile 
transmission and all notices shall be effective when received during 
business hours.  Notice addresses are as follows:  Sublessor:  Jim 
Robison, Director of Administration Services, NIKE, Inc., One Bowerman 
Drive, Beaverton, OR 97005-6453; FAX (503) 671-4715; Sublessee:  8500 
S.W. Creekside Place Beaverton, OR 97008, Attn: Craig Swanson, Vice 
President of Finance, FAX (503) 526-4299.  All rent and other payments 
due under this Sublease or the Master Lease shall be made to Sublessor 
at the same address.

8.  ACCESS TO TELEPHONE ROOM

     Sublessee shall be entitled to access and use of the central 
telephone room serving the Premises for installation of its telephone 
switching equipment, such access and installation to be done in a way 
which does not interfere with use of such room and equipment by 
Sublessor.

9.  COMMON AREA MAINTENANCE CHARGES

     Sublessee shall pay common area maintenance charges attributable 
to the Subleased Premises which are currently $.21 per rentable square 
foot per month and paid together with rent.  Sublessee shall also pay 
all utility charges billed to the Master Lease premises during the term 
of the Sublease, so long as there are no other tenants occupying the 
building.

10. ACCESS TO CARD KEY SYSTEM

     Sublessee shall be given access to and use of the existing card 
key security access system and shall be allowed to connect the system 
to Sublessee's card key computer system.  Sublessor's property 
management personnel will be allowed access to the subleased premises 
for purposes of inspection and repair.

11. PURCHASE OF PERSONAL PROPERTY

     Sublessee agrees that upon execution of this Sublease, it shall 
purchase those items of furniture listed on the attached Exhibit C from 
Sublessor for the sum of $50,000, and such sum shall be paid upon 
signing of this Sublease in addition to rent for the month of August.  
Sublessor will give a bill of sale warranting its ownership of such 
items, which Sublessee will accept AS IS with no warranties as to 
condition.

12. EARLY POSSESSION

     Sublessee may take possession of the Premises upon execution 
hereof for purposes of doing work in preparation for occupancy.  Such 
early occupancy shall be subject to all terms and conditions of this 
Sublease, except that rent will not commence until the date stated 
herein.

13. Paragraphs 8 through 14 are attached hereto and made a part hereof 
prior to the execution of the Lease.

SUBLESSOR:  NIKE, INC.            SUBLESSEE:  PROTOCOL SYSTEMS, INC.
By:       Tim Robinson            By:       Craig M. Swanson
Address:  One Bowerman Drive      Address:  8500 SW Creekside Place
          Beaverton, OR 97005               Beaverton, OR 97008

The undersigned Landlord under the Master Lease attached as Exhibit 
'A', hereby consents to the subletting of the Premises described herein 
on the terms and conditions contained in this Sublease.  This consent 
shall apply only to the Sublease and shall not be deemed to be a 
consent to any other Sublease.

Dated: September 11, 1998          Landlord:
                                   By:  Eileen Newkirk 
                                        Regional Manager
                                        PS Business Parks, L.P.