Service Information
5-8
15. Disconnect the Model 617 from Channels 1 and 2,
and, in a similar manner, reconnect it to Channels
2 and 3 (electrometer high to Channel 2, and volt-
age source high to Channel 3).
16. Install the card in slot 1 (CARD 1) of the Model
7001 if it is not already installed.
17. Turn on the Model 7001 and program it to close
Channels 1!2 and 1!3.
18. On the Model 617, disable zero check and press
OPERATE to 100V.
19. After allowing the reading on the Model 617 to set-
tle, verify that it is >10G
Ω
. This is the isolation
between Channels 2 and 3.
20. Using Table 5-2 as a guide, repeat the basic proce-
dure of steps 13 through 19 for the rest of the path
pairs (starting with test #3).
7013
IN
OUT
H
L
H
L
Each Adjacent Channel Pair :
IN
OUT
H
L
H
L
HI
Model
INPUT
617
Model 7025
Unterminated
Triax Cable
(Red)
Banana to Banana Cable
Ground Link
Removed
Unterminated
Banana Cables
Source V and
Measure V/I
Jumpers
HI
Figure 5-4
Channel to channel testing
Содержание 7013-C
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Страница 71: ...Keithley Instruments Inc 28775 Aurora Road Cleveland Ohio 44139 Printed in the U S A...