Service Information
6-8
NOTE
Refer to the following procedure to check
channel-to-channel isolation.
11. Turn off the mainframe and connect the Model 6517A to
the card as shown in Figure 6-5.
12. Install the Model 7021 in slot 1 and turn on the main-
frame.
13. Program the mainframe to close channel 1!2 (bank A,
input 2). Make sure all other channels are open.
14. On the Model 6517A, source 100V.
15. After allowing the reading on the Model 6517A to settle,
verify that it is >1G
Ω
(10
9
Ω
).
16. Turn off the Model 6517A voltage source.
17. Using Table 6-3 as a guide, perform tests 2 through 11
for the remaining bank A inputs. Remember to move
bank input connections as indicated in the table.
18. Use Table 6-3 (test numbers 12 through 28) and the
above procedure to test bank B inputs.
Figure 6-5
Channel-to-channel isolation test connections
Model 7021
Bank
Outputs
Bank Inputs
A
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 H
L H
L H
L H
L H
L
B
H
L
H
L
Model 6517A
Note: Setup shown is configured
to test isolation between
path 1!1 and 1!2.
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
Unterminated
Banana Cables
HI
(Red)
1
2
6
7
11
12
16
17
21
22
26
27
3
4
5
8
9
10
13
14
15
18
19
20
23
24
25
28
29
30
Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com
Содержание 7021
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