U n i - C o d e r
Desktop recorderＵ－６３８（ 00 Verion）
ＳＰＥＣＩＦＩＣＡＴＩＯＮ

Specifications are subject to change without notice ．
Drawing number

ＰＡＮＴＯＳ ＣＯ．，ＬＴＤ

625D09 － 00 － 0001

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Ｕ－６３８ Desktop recorder SPECIFICATIONS

1. OUTLINEThe U-638 multi-channel desk-top recorder is designed based on computing recorder Model U-636 maintaining
its principal functions and easy operation that has been very popular whit the customers. Renewal of design ofoperation panel, high-speed performance of pen speed, adoption of electric pen lift for each pen, and further,character printing equipment and parallel interface ( based on CENTRONICS) are added to the present options.
In addition, this recorder corresponds to the communication function of thermocouple/D.C. voltage input unit
TCV3A which has been developed as general-purpose input unit. By mounting this input unit, the U-638
becomes possible to print the set value of measurement range of each channel in the status printing by character
printing unit and to set measuring rang of each channel from the host computer via various interfaces.
The recorder consists of 6-channel servo system united by the servo mechanism and pen lift mechanism, chartcassette which allows loading of both roll chart paper and folding type chart paper, and operation panel which
has been designed considering of chart speed and easy setting of pen lift, etc.
Furthermore, standard specification includes synchronizer function which automatically compensates pen
clearance between channels and analog output. ( See "1.1 System Configuration" ) .
In addition to the above, plug-in input units are available for various kinds of measurements such as voltage,current and temperature, etc., in order to meet with diversified measuring requirements. Therefore, wide range
measurements may be carried out with economical manner.
Measurement of high-speed transient phenomena is also possible making use of technology accumulated withconventional storage recorders. This is an optional item. Therefore, it may be said that this recorder is equippedwith capability equivalent to those developed by high speed recorders such as pen recording type oscillograph.
As for optional items, by mounting the character printing unit, this recorder can be used as the event marker,
time marker as well as the status printer for date, time and chart speed, etc.
Also, character printing from optional parallel interface ( based on CENTRONICS) , GP-IB interface RS-232C
interface becomes possible, with more improved automatic measuring system by the computer.
In addition the above, DC-DC converter, separate pen marker and chart take-up device, etc. are provided to
expand function of recording system.
This recorder incorporates, based upon abundant recorder manufacturing technology obtained for long years,
identically shaped cartridge type fiber-tip pen, compact unit of recording pen and chart drive nit which aredeveloped by PANTOS's unique idea.

Drawing number

625D09 － 00 － 0001

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Ｕ－６３８ Desktop recorder SPECIFICATIONS

1.1 System Configuration
CH.1
INPUT UNIT
Ｂ

REMOTE CONTROL CONNECTOR
Multi-channel desk-top recorderStart/stop of drive
Start/stop of fast feed ( normal rotation)
Start/stop of chart fast feed
(reverse rotation)
Start of chart paper home position returnSelection of inside/outside of chart drive
pulse
External input of chart drive pulse
Superimposing type event marker
Separate pen type event marker
Pen lift (simultaneous lift of all pens)
Setting of X-Y recording
Selection of normal/reverse rotationof chart drive

Ｕ－６３８
CH.2
INPUT UNIT
Ｂ

CH.3
INPUT UNIT
B

・ Servo recording mechanism
・ Electric pen liftmechanism for each pen
・ Chart drive mechanism
・ Operation panel
・ Microprocessor circuit
・ Power circuit
・ Synchronizer
・ Analog output

CH.4
INPUT UNIT
Ｂ

CH.5
INPUT UNIT
Ｂ

CH.6
INPUT UNIT
Ｂ

GP11
GP-IB interface unit
A

GP-IB

RS11
RS232C interface unitA

RS-232C

DCP1
DC-DC converter unit
A

DC12V

PARALLEL INTERFACECONNECTOR

PIF1Parallel interface
A
PRN1
Character printing
A
TAKE1
Chart winding equipment
A(NOTE)
A:Factory's option
B:User's option

MRK1
Separate pen type event
markerA
Fig. 1-1 System Construction
Drawing number

625D09 － 00 － 0001

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Ｕ－６３８ Desktop recorder SPECIFICATIONS

2. FEATURES(1)

Standard specification includes synchronizer function which automatically compensates the pen clearance
between channels. Further, fine adjustment of synchronizer function can be done making use of thebuilt-in calibration signal.

(2)

Pen up and down motion, and start and stop of chart drive can be done by connecting the external control.
Thus remote operation is made possible.

(3)

Uniform response is obtained throughout the measurement and maintenance is made easy thanks toadoption of identically shaped cartridge type tip pen.

(4)

Many input units are available which are combined appropriately according to the measuring purpose.

(5)

Many optional items including GP-IB, RS232C interface unit, and parallel interface which can be usedwith same feeling as printer, and character printing equipment which print date, time and chart speed
while performing analog recording for systematic measurement and automation are available.

(6)

Realization of high-speed pen drive of 0.2 s/FS ( Max. speed: approx. 1600 mm/s) .

(7)

Standard specification includes electric pen lift mechanism for each pen.

(8)

Chart speed can be set freely ranging from ultra low speed of "1 cm/h" to high speed of "200 cm/min." bymeans of crystal oscillator and stepping motor.

(9)Home position return function of chart paper is provided to enable superimposing recording.

(10 ) Both roll type and folding type chart paper are available.
(11 ) By the external connector or setting from interface, this recorder is used as the X-Y recorder.

Drawing number

625D09 － 00 － 0001

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Ｕ－６３８ Desktop recorder SPECIFICATIONS

３ General Specifications
Items

Specifications

Model number

U-638

Number of channels

4 or 6 ( specified by user)

Recording system

Automatic zero balancing, continuous-line recording

Circuit system

Digital・ A/D Converter 12 bits
・ D/A Converter 12 bits
・ Maximum sampling time 8 ms

Writing width

250 mmReference point

Right hand zero of the chart paper

Pen speed *1

Less than 0.2s/FS ( max. speed: approx. 1600 mm)

Accuracy *2± 0.25% /FS( 23 ℃ )Dead band± 0.1% /FS

Chart speed

１，２，････ 798, 799 cm/h
１，２，････ 199, 200 cm/min
Chart paper feeding accuracy ： 0.05 ％＋（± 0.5 ㎜）
Fast forward and reverse： 200 cm/min
Return to home position： 200 cm/min

Chart paper rewind

Rewinding amount・ Rolled type:
20m (total length)
・ Z-folded type: Max. 1m

Chart paper

Circular type perforation(specified by user)
・ Rolled type ( 2501P50)
・ Z-folded type ( 2501Z150)

20m long, right zero

Square type perforation(specified by user)
・ Rolled type ( 2516P50)
・ Z-folded type ( 2516Z150)
X-Y function

X-axis input channel
X-axis effective
recording width
Z-axis reference point
X-axis chart speed *1
X-axis accuracy *2(For one way simple increase)
X-axis band *3

Drawing number

625D09 － 00 － 0001

20m long, right zero

: Channel 1: 250 mm
: Arbitrarily setting on the X-axis: 15 s/FS: ± 0.5% /FS: ± 0.3% /FS

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Ｕ－６３８ Desktop recorder SPECIFICATIONS

Items

Specifications

Synchronizer

Method :Digital memory
Time axis resolution :30 words/4 mm ( 0.133 mm)
Time axis fine adjustment
・ Resolution :0.266 mm/step・ Adjustment range :±4 steps (approx. ±1 mm)

Recording pens

Cartridge type identical shaped fiber tip pens

Ink color

Channel 1 : Red
Channel 2 : Green
Channel 3 : Brown

Distance between pens

4 mm

Pen liftIndividually and electrically operated

Chart end alarm

Alarm by buzzer and blinking display by the numeral display unit
Stop of chart drive
Stop of recording pen
UP of pen lift

Superimposing type event
markerSuperimposing on the recording pen
・ Synchronizer OFF : All channels
・ Synchronizer ON : Last channel only
・ Amplitude :+3.5 graduation
・ Time :0.3 sec.

Analog output

Output voltage :Output impedance :Accuracy :External operation

Start/stop of chart drive
Start/stop of chart fast feed ( Normal rotation)
Start/stop of chart fast feed ( Reverse rotation)
Start of chart home position returnSelection of chart drive normal/reverse rotation
Selection of chart drive pulse external/internal
Pulse input of external chart drive

Channel 4 : Yellow green
Channel 5 : Blue
Channel 6 : Orange

1 - 9V/0 - 100%
2.2 k ohm
± 0.5%

・ Chart speed :1/30 mm/pulse
Maximum 1000 pps(200 cm/min)・ Signal wave form :Pulse, sign wave, quadrant wave, triangle
wave(pulse wave more than 50 us)
Superimposing type event marker
Separate event type marker
Pen lift ( simultaneously all pens)
Setting of X-Y recording
External signal input
・ Input impedance :・ Voltage :Drawing number

4.7 k ohm
High level+2 V to +20 V
Low level± 0.8 V to - 20 V
(Operation is possible by TTL level andtransistor switch)

625D09 － 00 － 0001

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Ｕ－６３８ Desktop recorder SPECIFICATIONS

Items

Specifications

Environment

Temperature :Humidity :Insulation resistancePower-chassis ( GND )Over 20 M ohm ( 500 V DC megger)

Dielectric strength

Power-chassis ( GND)
1500 V AC for 1 minute

Power supply

Ranges of voltage ( 5 ranges)
100, 115, 200, 220, 240 V AC

0 to 45 ℃
45 to 85%

± 10%

Frequency
Both for 50 and 60 Hz
Power

Number of channels

4

6

consumption

Balanced

54 VA

64 VA

TYP.

Maximum

180 VA

230 VA

External dimensions

445(W) × 250( H) × 428(D) mm

Weight *4

Number of channels

Accessories

WeightAccessories

4

6

approx. 17.5kg

approx. 19kg

Chart paper
Chart holder
Recording pen
・ for channel 1 ( Red)・ for channel 2 ( Green)・ for channel 3 ( Brown)
・ for channel 4 ( Yellow green)(In case of 6-channel)
・ for channel 5 ( Blue)(In case of 6-channel)
・ for channel 6 ( Orange )Power cablefuse 1.5A
fuse
3A
Instruction manual1
one each for left and right
NDH-01
NDH-02
NDH-03
NDH-04１１
１
１

NDH-05

１

NDH-6

１
１
１
１

Cautions: *1 Time required for driving 99% of input signal.
*2 Accuracy including the linearity when the polarity selection switch of standard input unit
DV1( 101 version) is set at "+" position and measured at maximum sensitivity range.
*3 Accuracy within 3 times repeats on the X-axis.
*4 Weight including the input unit DV1( 101 versions) equivalent to number of channels.

Drawing number

625D09 － 00 － 0001

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Ｕ－６３８ Desktop recorder SPECIFICATIONS

４． Option
For U-638 recorder, following optional items are available. Factory option shows the optional items
which can be attached at shipment from factory, user option shows the optional items which can be
attached after purchased.

Factory option
No.

Items

1

Chart take-up device2

Separate pen type event marker

3

DC-DC converter unit

4

GP-IB interface unit

5

RS232C interface unit

6

Parallel interface ( conforms to CENTRONICS)

7

Character printing unit

Caution: Character printing unit and separate pen event marker cannot be mounted together.

User option
No.

Items

1

Input unit
(Specification sheet is separately available.)２

starage・ unit
(Specification sheet is separately available.)

Drawing number

625D09 － 00 － 0001

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Ｕ－６３８ Desktop recorder SPECIFICATIONS

Chart take-up device
Items

Specifications

Model

U-638-TAK1(000 version)

U-638-TAK1( 001 version )Applicable chart paper

2501P50
25014TR50（ Thermal）
Rolled chart paper of 20m(Round perforation)

2501P50
25003TP50（ Thermal）
Rolled chart paper of 20m(Square perforation)

Operation

Interlocked with the chart drive mechanism of the recorder

WeightApprox. 250g

Accessories

Chart take-up bobbin : 1
Chart holder : each 1 for left and right

Drawing number

625D09 － TAK1 － 0001

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Ｕ－６３８ Desktop recorder SPECIFICATIONS

Separate pen type event marker
Items

Specifications

Model

U-638-MRK1

Function(1) Event marker function(2) Time marker function

Operation(1) Event marker
・ Direct operation with the operation panel key
・ Operation with the external control connector(2) Time marker
・ Unit of setting time is interlocked with unit of chart speed.

Unit of chart speed

Range of setting time

cm/min1 - 999 s

cm/h

1 - 999 m

Operating position

・ Reference position ( when stopped)Y-axis : Round perforation chart paper
A position 3 mm right from the reference point of thechart paper.
: Square perforation chart paper
The right end in the marker space of the chart paper.
T-axis : Round type perforation chart paper
Position at 3 mm from reference point of chart paper toright.
: Square type perforation chart paper
On the same time axis of the last channel recording pen.
・ Amplitude
2 mm left from the above reference position.

External control

・ Input impedance : Over 4.7K ohm
・ Signal :TTL level, transistor switch ( "ON" in the lowlevel)

Marker pen

Cartridge type fiber tip pen
No. 4695 ( red)

Pen lift

Channel 1
Interlocked with the recording pen.

WeightApprox. 220g

Accessories

Marker pen 1

Drawing number

625D09 － MRK1 － 0001

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Ｕ－６３８ Desktop recorder SPECIFICATIONS

DC/DC Inverter Unit ( Factory's Option )Items

Specifications

Model

Ｕ－６３８－ＤＣＰ１

Circuit System

Switching system

Input voltage

12V DC ( 9V ～ 15V DC)

Under Input Voltage/
Overvoltage Protection

Operates only within the normal range of voltage

Protection against Inverted
Connection of Input Voltage

With protection circuit

Range of Service Temperatureand Humidity

In conformity to those for main body

Power Consumption

Number of channels

46

When balanced

45w

53w

Maximum

110w

144w

Insulation ResistancePower-chassis ( GND) More than 50 M ΩDielectric Strength

Power-chassis ( GND) DC 250v ( one minute)

External Dimensions

300( W) × 126( H) × 50( D) mm

WeightApprox. 1.5kg

Accessories

Fuse
20A
Power cable ( for DC)

Drawing number( DC 250V Megger)

1
1

625D09 － DCP1 － 0001

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Ｕ－６３８ Desktop recorder SPECIFICATIONSGP-IB interface unit
General specifications
Items

Specifications

Model

Ｕ－６３８－ＧＰ１１

TypeElectric specification
Mechanical specification

ＩＥＥＥ Std 488 － 1978
It applies to a standard correspondingly.
〃

Interface function

SH1， AH1， T5， L3， SR1， RL0， PP0， DC0， DT1， C0

Circuit System

The system which constitutes from an electronic circuit and is combined as
an extended function of a main part microprocessor.

Power Consumption

５ＶＡ（ＴＹＰ ．）

External Dimensions

300( W) × 126( H) × 25( D) mm

WeightApprox. 520g

Function specifications
Items

Specifications

Listeners function

A setup of character printing ／ Control
Status printing

ON of a manual status printing

Character printing

A setup of a character input ／ Release
Registration of a character input code
（ Character code： JIS 158 character）（ JIS X 0201 Conform）

A setup of analog record ／ Control
A setup of a mode

Recording mode
Transmitting mode of Starage data

A setup of a function

Ｔ－Ｙ Recording〃
Ｘ－Ｙ Recording

Date

Receiver record ／ Release（ Input code： JIS X 0201 Conform）
Scaling of transceiver data
Designate of a transmitting channel
Request to send

Chart paper feeding

ON ／ OFF of drive
ON ／ OFF of chart fast feed ( normal/reverse)
ON of chart paper home position return
A setup of home position
A setup of speed

Pen lift

UP ／ DOWN of a record pen

Drawing number

625D09 － GPI1 － 0001

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Synchronizer ＯＮ〃
ＯＦＦ

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Ｕ－６３８ Desktop recorder SPECIFICATIONS

Items

Specifications

Listeners function

A setup of analog record ／ Control
MarkerON of Superimposing type marker
ON ／ OFF of a Separate pen type marker
ON ／ OFF of a Time marker
Time set of a Time marker

Input unit

Ａ setup of a ＴＣＶ３Ａ

Starage unit

Clear of ＳＵ－１１２

Other setup

Torca function

Service request

StatusRequest to Send

Initialization

Initialization

Date

Data transmission of a record pen position（ Transmission code： JIS X 0201 Conform ）StatusStatus transmission of U-638

Starage unit

READY of SU-112

Chart paper

ＥＮＤ

Error information

The header error of a format
When exceeding the numerical range of the format
The form error of a format
When exceeding the number of character of the format
When the printer is not equipped
The setting position error of a printing mode switch

Drawing number

625D09 － GPI1 － 0001

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Ｕ－６３８ Desktop recorder SPECIFICATIONS

RS-232C interface unit
General specifications
Items

Specifications

Model

Ｕ－６３８－ＲＳ１１

Type

ＥＩＡ ＲＳ－２３２Ｃ（ＪＩＳ Ｃ ６３６１

Circuit System

The system which constitutes from an electronic circuit and is combined as
an extended function of a main part microprocessor.

Synchronous system※１※１

Start － Stop type
The number of start bits
The number of data bits
The number of stop bits

※１

75， 110， 150， 300， 600， 1.2k， 2.4k， 4.8k， 9.6k

Data signal speed（ Baud rate）

１
７ or ８１，１ １／２ or ２
bits ／ sOnly one direction can be communicated simultaneously. （ Half duplex）

Communication system※１

Error detection

It applies to a standard correspondingly.
〃）

Horizontal parity（ Nothing ・ Odd number ・ Even number）

Power Consumption

５ＶＡ（ＴＹＰ ．）

External Dimensions

300( W) × 126( H) × 25( D) mm

WeightApprox. 520g
※１： It chooses with a DIP switch.

Drawing number

625D09 － RSI1 － 0001

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Ｕ－６３８ Desktop recorder SPECIFICATIONSFunction specifications
Items

Specifications

Listeners function

A setup of character printing ／ Control
Status printing

ON of a manual status printing

Character printing

A setup of a character input ／ Release
Registration of a character input code
（ Character code： JIS 158 character）（ JIS X 0201 Conform）

A setup of analog record ／ Control
A setup of a mode

Recording mode
Transmitting mode of Starage data

A setup of a function

Ｔ－Ｙ Recording〃
Ｘ－Ｙ Recording

Date

Receiver record ／ Release（ Input code： JIS X 0201 Conform）
Scaling of transceiver data
Designate of a transmitting channel
Request to send

Chart paper feeding

ON ／ OFF of drive
ON ／ OFF of chart fast feed ( normal/reverse)
ON of chart paper home position return
A setup of home position
A setup of speed

Pen lift

UP ／ DOWN of a record pen

MarkerON of Superimposing type marker
ON ／ OFF of a Separate pen type marker
ON ／ OFF of a Time marker
Time set of a Time marker

Input unit

Ａ setup of a ＴＣＶ３Ａ

Starage unit

Clear of ＳＵ－１１２

Synchronizer ＯＮ〃
ＯＦＦ

Other setup
StatusRequest to Send

Initialization

Initialization

Drawing number

625D09 － RSI1 － 0001

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Ｕ－６３８ Desktop recorder SPECIFICATIONSFunction specifications
Items

Specifications

Transmitting function

Date

Data transmission of a record pen position（ Transmission code： JIS X 0201 Conform ）StatusStatus transmission of U-638

Chart paper

ＥＮＤ

Error information

The header error of a format
When exceeding the numerical range of the format
The form error of a format
When exceeding the number of character of the format
When the printer is not equipped
The setting position error of a printing mode switch

Error information

Drawing number

625D09 － RSI1 － 0001

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Ｕ－６３８ Desktop recorder SPECIFICATIONS

Parallel interface
General specifications
Items

Specifications

Model

Ｕ－６３８－ＰＩＦ１

Type

It is based on Centronics.
The parallel interface of 8 bit TTL

Circuit System

The system which constitutes from an electronic circuit and is combined as
an extended function of a main part microprocessor.

External Dimensions

Main part built-in

Function specifications
Items

Specifications

Listeners function

A setup of character printing ／ Control
Status printing

ON of a manual status printing

Character printing

A setup of a character input ／ Release
Registration of a character input code
（ Character code： JIS 158 character）（ JIS X 0201 Conform）

A setup of analog record ／ Control
A setup of a function

Ｔ－Ｙ Recording〃
Ｘ－Ｙ Recording

Synchronizer ＯＮ
〃
ＯＦＦ

Date

Scaling of receiving data

Chart paper feeding

ON ／ OFF of drive
ON ／ OFF of chart fast feed ( normal/reverse)
ON of chart paper home position return
A setup of home position
A setup of speed

Pen lift

UP ／ DOWN of a record pen

MarkerON of Superimposing type marker
ON ／ OFF of a Separate pen type marker
ON ／ OFF of a Time marker
Time set of a Time marker

Other setup
Initialization
Signal output

Initialization

Recording form end
ON/OFF state of a synchronizer

Drawing number

625D09 － PIF1 － 0001

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Ｕ－６３８ Desktop recorder SPECIFICATIONS

Character printing unit
Date, status or marker can be printed in the blank of right end the chart paper in a row.
Connection with the host computer enabled character printing by character code input.
Items

Specifications

Model

U-638-PRN1

Printing method

Wire-dot

Print head

Thermal・ serial・ head（８ dot）

Effective printing width

Approx.

Printing position

Between the base line at the right（ scale ０ %） end of a recording form
and perforation

Chart paper

Circular type perforation
・ Thermal Rolled type・ thermal Z-folded typeSquare type perforation
・ Thermal Rolled type・ thermal Z-folded type

Printing mode

Status printing
・ Repeat printing
・ Manual printing
Marker printing
・ Event marker
・ Time marker(As to interval, refer to the item for separate pen type event marker.)
Character printing
・ Input printing of character code from the host computer JIS 158
characters ( conforms to JIS X 0201 )Refer to character code table.

Character composition

ANK : 5 × 7 dots

Character size

ANK : 1.8 × 2.8 mm

Character interval

2.117 ㎜

Printing speed

It is dependent on recording form sending speed ．

Drawing number

３㎜

20m long, right zero
No． 25014TP50
No． 25014TZ150
20m long, right zero
No． 25003TP50
No． 25003TZ150（ 12 Character ／ Inch）

625D09 － PRN1 － 0001

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Ｕ－６３８ Desktop recorder SPECIFICATIONS

５ . EXTERNAL VIEW

Top view

Operation Panel

428
DC VOLTAGE UNITCAL.

DC VOLTAGE UNIT

10

5
POSITION

CHECK

Front panel

20

2
1
CAL.

MEAS.

MAX 200V
5

50
100

VERNIER

200
500

mV

POSITION

V

RANGE

66-004

Input unit

CAL.

MAX 200V

CHECK
66-004

MEAS.

10

20

2
1
CAL.
RANGE

50
100

VERNIER

200
500

mV

V

PRINT
MODE
AUX

STATUSSTATUSLOGGINGMANUAL

INTERFACE

OFF

YEAR

MINUTE
HOUR

MONTH
DATE
CLOCK SET

DC-DC Inverter Unit,

Left side view

GP-IB Interface Unit, etc.
250

(Options)

445
INPUT

POLARITY
+

CAL.

+

+

INPUT

POLARITY

-

-

CAL.

-

+

-

Rear Panel

Type：２ ch
Drawing number

625D09 － 00 － 0001

Page

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１／１

Amendment