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STRATADKFAULTFINDING
SECTION 200-096-500
FEBRUARY1991
7.10 Ohmmeter Test
7.11
The continuity of the cable run between the
KSU and the electronic telephone is checked with
an ohmmeter as follows:
1) Disconnect the electronic telephone.
2) At the MDF, remove the bridging clips.
3) Using an ohmmeter, measure the resistance
between all combinations of the four wires at
the modular block. All measurements should
TABLEE
STATION CABLECONTINUITY
CHECKUSINGVOLTMETER
*Nominal voltage-within the limits of -26.3 N
-27.8 VDC while under AC power.
exceed 1 M ohm (Refer to Table H on page 27
for a PDKU).
I
‘\,
./
.
,I’
4) At the MDF, place shorting jumper wires be-
tween the T and R of pair #I (green-red), the
T and R of pair #2 (black-yellow) and the T and
R of pair #3 (blue-white).
5) At the modular block, measure the resistance
between all wire combinations. The proper
readings are shown in Table F (Refer to Table
H on page 27 for PDKU). I
TABLEF
STATION CABLECONTINUITY
CHECKUSINGOHMMETER
NOTES:
1. This is maximum allowable reading.
2. The green-red, black-yellow and white-
blue measurements should be within 10%
of each other.
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