Keithley 7011-S Instruction Manual page 74

11. On the Model 617, disable zero check and press
OPERATE to source +lOOV
12. After allowing the reading on the Model 617 to set-
tle, verify that it is >lGQ (lOgQ). This measurement
is the leakage resistance (bank isolation) between
Bank A, Input 1 and Bank B, Input 2.
13. Place the Model 617 voltage source in standby and
enable zero check.
14.
Turn
off the
Model
7031
and move the electrometer
connections to Banks B and C.
15.
Install the Model 7011 in slot 1 of the mainframe
and tom the Model 7001 on.
16.
Program the Model 7001 to close Channels 1!12
and 1!23 (Bank B, Input 2 and Bank C, Input 3).
17. On the Model 617, disable zero check and press
OPERATE to source +lOOV.
18. After allowing the reading on the Model 617 to set-
tle, vaify that it is rlGS2 (1O'Q).
19. Place the Model 617 voltage source in standby and
enable zero check.
20. Turn off the Model 7001 and move the electrometer
connections to Bank C and D.
21.
Install the Model 7011 in slot 1 of the mainframe,
and turn the Model 7001 on.
22. Using Table 5-2 as a guide, repeat the basic proce-
due of steps 16 through 18 for the rest of the path
pairs (test numbers 3 through 9 in the table).
Table 5-2
Bank isolation test summary
23. Place the Model 617 voltage source in standby and
enable zero check.
NOTE
Refer to for the following procedure to
check channel-to-ckannel isolation.
24.
Turn off the Model 7001 and connect the Model 617
to the card as shown in Figure 5-5.
25. Install the Model 7011 in slot 1 of the Model 7001,
and turn the mainframe on.
26.
l'rogmm the Model 7001 to close Channel 1!2
CBank A, Input 2). Make sure all other channels are
open.
27. On the Model 617, disable zero check and press
OPERATE to source 1OOV.
28. After allowing the reading on the Model 617 to set-
tle, verify that it is >lGsL (lOgsZ).
29. Place the Model 617 voltage source in standby, and
enable zero check.
30. Using Table 5-3 as a guide, perform tests 2 through
9 for the remaining Bank A Inputs. Remember to
move Bank Input connections as indicated in the
table.
31. Use Table 5-3 (test numbers 10 through 36) and the
above procedure to test Banks B, C, and D.
1
Test
number
Bank isolation Test equipment location
Channels closed*
1 Bank A, Input 1 to Bank B, Input 2 BankAandBankB l!l and 1!12
2
Bank B, Input 2 to Bank C, Input 3 BankBandBankC 1!12 and 1!23
3
Bank C, Input 3 to Bank D, Input 4 BankCandBankD 1!23and1!34
4 Bank C,
Input
4
to Bank D, Input 5 BankCandBankD
1!24 and 1!35
5
Bank C, Input 5 to Bank D, Input 6 BankCandBankD 1!25 and 1!36
6
Bank C, Input 6 to Bank D, Input 7 BankCandBankD 1!26 and 1!37
7
Bank C, Input 7 to Bank D, Input 8 BankCandBankD 1!27 and 1!38
8
Bank C, Input 8 to Bank D, Input 9 BankCandBankD 1!28 and 1!39
9 Bank C, Input 9 to Bank D, Input 10
BankCandBankD 1!29and1!40
*Assumes Model 7011 installed in slot 1 of mainframe. Programmed as slot (1) and channel.
5-9