Keithley Instrument Connections; Model 617 Electrometer Connections; Figure - Keithley 7174A Instruction Manual

2.5.5 Keithley instrument connections

The following paragraphs outline connecting typical Kei-
thley instruments to the Model 7174A 8 × 12 Low Current
Matrix Card. Other similar instruments can be connected
using the same cabling as long as their input/output configu-
rations are the same. Instrument connections covered
include:
• Model 617 Electrometer/Source
• Model 196 DMM
• Model 230 Programmable Voltage Source
• Model 220 Programmable Current Source
• Model 590 CV Analyzer
• Model 236/237/238 Source Measure Unit

Model 617 electrometer connections

Connections for the Model 617 Electrometer are shown in
Figure 2-6. The electrometer INPUT and COM can be con-
6172 2-slot to 3-lug
Triax Adapter

Figure 2-6

Model 617 electrometer connections
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7078 - TRX Triax
COM
INP UT
Model 617
Guard off
237-BAN-3 or Special Triax
Voltage Source
Connections
Note: See paragraph 2.5.3 and Figure
2-4 for special triax to banana
cable.
nected to any row. Figure 2-6 shows connections to rows A
and B.
1. Connect one end of a Model 7078-TRX- (3, 10, or 20)
3-lug triaxial cable to row A of the Model 7174A.
2. Connect the other end of the triax cable to the Model
617 INPUT connector using a Model 6172 adapter.
3. Connect the triax end of a triax/banana cable to row B of
the Model 7174A.
4. Connect the banana plug end of the triax/banana cable
to the COM terminal of the Model 617. The shorting
link between COM and chassis ground should be re-
moved for this application.
5. Place the GUARD switch in the OFF position.
6. To connect the voltage source to the Model 7174A, con-
nect the V-SOURCE HI and LO connector of the Model
617 to the desired row connectors on the matrix card.
Figure 2-6 shows connections to rows C and D.
237-BAN-3 or Special Triax
237-BAN-3
7174A Matrix Card
Operation
K E ITHL E Y
7174A
8 x 12 L OW
CUR R E NT MATR IX
S IGNAL
COL UMNS
200V P K
200V P K
GUAR D
200V P K
R OWS
1
A
2
B
3
C
4
D
5
L
6
7
8
E
9
F
10
G
11
H
12
!
WAR NING:
TIGHTE N MOUNTING S CR E WS
TO E NS UR E P R OP E R
CHAS S IS GR OUND
2-11