Keithley 7015-C, Инструкция по эксплуатации

Страница: 70 / 97

Service Information
5-8
11. On the Model 617, disable zero check, and press OPER-
ATE to 100V.
12. After allowing the reading on the Model 617 to settle,
verify that it is >1G
Ω
(10
9
Ω
). This measurement is the
leakage resistance (bank isolation) between Bank A, In-
put 1 and Bank B, Input 2.
13. Place the Model 617 voltage source in standby, and en-
able zero check.
14. Turn off the Model 7001/7002, and move the electrom-
eter connections to Banks B and C.
15. Install the Model 7011 in slot 1 of the mainframe, and
turn on the Model 7001.
16. Program the Model 7001/7002 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 OPER-
ATE to 100V.
18. After allowing the reading on the Model 617 to settle,
verify that it is >1G
Ω
(10
9
Ω
).
19. Place the Model 617 voltage source in standby, and en-
able zero check.
20. Turn off the Model 7001/7002 and move the electrome-
ter connections to Banks C and D.
21. Install the Model 7015 in slot 1 of the mainframe, and
turn on the Model 7001/7002.
22. Using Table 5-2 as a guide, repeat the basic procedure of
steps 16 through 18 for the rest of the path pairs (test
numbers 3 through 9 in the table).
23. Place the Model 617 voltage source in standby, and en-
able zero check.
NOTE
Refer to the following procedure to check
channel-to-channel isolation.
24. Turn off the Model 7001/7002, and connect the Model
617 to the card as shown in Figure 5-5.
25. Install the Model 7015 in slot 1 of the Model 7001/7002,
and turn on the mainframe.
26. Program the Model 7001/7002 to close Channel 1!2
(Bank A, Input 2). Make sure all other channels are
open.
27. On the Model 617, disable zero check, and press OPER-
ATE to source 100V.
28. After allowing the reading on the Model 617 to settle,
verify that it is >1G
Ω
(10
9
Ω
).
29. Place the Model 617 voltage source in standby, and en-
able 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.
Table 5-2
Bank isolation test summary
Test
number
Bank isolation Test equipment location Channels closed*
1 Bank A, Input 1 to Bank B, Input 2 Bank A and Bank B 1!1 and 1!12
2 Bank B, Input 2 to Bank C, Input 3 Bank B and Bank C 1!12 and 1!23
3 Bank C, Input 3 to Bank D, Input 4 Bank C and Bank D 1!23 and 1!34
4 Bank C, Input 4 to Bank D, Input 5 Bank C and Bank D 1!24 and 1!35
5 Bank C, Input 5 to Bank D, Input 6 Bank C and Bank D 1!25 and 1!36
6 Bank C, Input 6 to Bank D, Input 7 Bank C and Bank D 1!26 and 1!37
7 Bank C, Input 7 to Bank D, Input 8 Bank C and Bank D 1!27 and 1!38
8 Bank C, Input 8 to Bank D, Input 9 Bank C and Bank D 1!28 and 1!39
9 Bank C, Input 9 to Bank D, Input 10 Bank C and Bank D 1!29 and 1!40
*Assumes Model 7015 installed in slot 1 of mainframe. Programmed as slot (1) and channel.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com