Fluke 990DSL, Руководство пользователя, Страница: 84 / 242

990DSL
Users Guide
4-20
Notes
The “Possible Split or Water” result is generated whenever the 3T
Capacitance Ratio (TG to TR) of a balanced pair is greater than the
average ratio for the selected Cable Type. This may be due to either a
split pair condition, enough water in the cable to alter its 3T Cap.
Ratio, or a good pair having a non-standard 3T Cap. Ratio.
If the pair is a known good pair with a non-standard 3T Cap Ratio,
you can create a Custom Cable Type with those characteristics by
pressing
A
(
Adjusted Opens,
then
D
(
Save as Custom)
. Subsequent
tests on like pairs will result in the omission of the “Possible Split or
Water” message.
To determine the approximate location of the split, proceed as follows:
1. On the Opens test result screen, press
C
(
Splits
).
A connection diagram is displayed, as shown in Figure 4-10:
acy21s.eps
Figure 4-10. Splits Test: Connection Diagram