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Cable Verifier
Users Manual
16
Telephone Voltages Detected
Figure 11 shows that telephone voltage is detected on pair
4,5.
Length is not shown because the voltage interferes with
length measurements.
Warning
The tester is not intended to be connected to
active telephone inputs, systems, or equipment,
including ISDN devices. Prolonged exposure to
the voltages applied by these interfaces may
damage the tester. Disconnect the tester if
and
appear.
egk11.eps
Figure 11. Telephone Voltages Detected
Telephone
voltage icon
Positive
wire (tip)
Negative
wire (ring)