Discovering Cabling Characteristics
39
G
Termination for the pair:
• W R: Wiremap adapter or remote ID locator, with its
number.
•
O: Open
• N: Short
• Q: Port, such as a hub, switch, or PC.
• E: Bridge tap.
• V: Voltage is detected. This may indicate an active
telephone circuit, ISDN line, or Power over Ethernet
(PoE) device. See page 6.
• U: The tester is connected to an active telephone
circuit.
•
T: A signal is present on the pair.
• ?: The tester cannot identify the termination.
avv49.bmp
Bridge tap detected at about 33.7 m.
The distance to a bridge tap is approximate (≈) because
multiple reflections from the bridge tap interfere with
length measurements.
Note
Bridge tap detection requires a minimum of
two branches (excluding the branch
connected to the tester) at least 15 ft (4.6 m)
long each, with a combined length of at least
40 ft (12.2 m).
-continued-
Figure 15. Discover Mode Results for Twisted Pair Cabling (cont.)
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