Keithley 7035, Инструкция по эксплуатации

Страница: 49 / 74

Service Information
5-10
12. Turn off the Model 6517A voltage source and the Model
7001/7002.
NOTE
Refer to the following procedure to check
channel-to-channel isolation.
13. Connect the Model 6517A to the card as shown in
Figure 5-5.
14. Install the Model 7035 in slot 1 and turn on the main-
frame.
15. Program the mainframe to close channel 1!2 (bank A,
input 2). Make sure all other channels are open.
16. On the Model 6517A, 60V.
17. After allowing the reading on the Model 6517A to settle,
verify that it is >1G
Ω
(10
9 Ω
).
18. Turn off the Model 6517A voltage source and the Model
7001/7002.
19. Using Table 5-3 as a guide, perform tests 2 and 3 using
steps 13 through 18 for the remaining bank A inputs.
Remember to move bank input connections as indicated
in the table.
20. Use Table 5-3 (test numbers 4 through 29) and steps 6
through 19 to test banks B through I inputs. Move the
electrometer connections shown in Figure 5-5 to the
appropriate bank and move the bank input connections
as indicated in the table.
Figure 5-5
Channel-to-channel isolation test connections
Bank
Outputs
Bank Inputs
Model 7035
HI
Model 6517A
(Red)
Unterminated
Banana Cables
Note: Setup shown is configured
to test isolation between
path 1!1 and 1!2.
Customer-supplied
Jumper
WARNING:
NO INTERNAL OPERATOR SERVICABLE PARTS,SERVICE BY QUALIFIED PERSONNEL ONLY.
WARNING:
NO INTERNAL OPERATOR SERVICABLE PARTS,SERVICE BY QUALIFIED PERSONNEL ONLY.
CAUTION:
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE FUSE WITH SAME TYPE AND RATING.
CAUTION:
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE FUSE WITH SAME TYPE AND RATING.
!
1
15V
!
90-110V
105-125V
180-220V
210-250V
Banana to
Banana Cable
Ground Link
Removed
Source V and
Measure V/I
Model 7025
Unterminated
Triax Cable
A
1 3 4 2
B
C
D
E
F
G
H
I
H L H L H L H L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L