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1
SERVICE INFORMATION
15. Repeat steps 7 through
13 for rows C and D. The path
isolation
for these rows should be >lTO (lO'%).
16. Repeat steps 7 through
14 for row pairs E and F, and
G and H. For each row pair, step through
the cross-
point pairs 1 and 2, 3 and 4, 5 and 6, 7 and 8, 9 and
lo, and 11 and 12. The complete procedure
outlined
in steps 7 through 11 should be repeated for each cross-
point pair. Each resistance measurement
for rows E
through
H should be >lTR (lo'%).
7-l
7078.TRX-3
Triax Cable
,,
$
3:
Guard off
User-Prepared
Triax Cable
(See Figure 4-5)
617 Electrometer
Warning : Hazardous
voltage from
a"
the electrometer source
H@
may be present on terminals.
QQ
Is
7072 Matrix Card
Figure 4-4. Connections
for Path Isolation Verification
4-6
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