Instruction manual

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When testing an RJ-45 jack and there are two lines coming into the jack, two LEDs will be lit. If you have four
lines coming into the jack, four LEDs will be lit. If wall plates with RJ-45 jacks are not available, then you should
use the telephone line simulator Model TT-250. It will provide all of the conditions that would be found in the
field and are illustrated below.
Before testing, you should know which wiring standard is coming into the jack.
The number pairs match with the number of LEDs on the label of the analyzer for EIA/TIA-568A and Token Ring
ONL
Y (see Figure 20).
The following is the procedure for testing RJ-45 jacks (for EIA/TIA-568A):
1. Remove the phone wire from the modular jack and insert the bigger telephone plug of the telephone line
analyzer into the telephone jack to be tested.
2.
If the telephone line analyzer shows all green lights, the modular jack is working with straight polarity of all pairs.
3. If the telephone line analyzer shows all red lights, the modular jack is working with reverse polarity of all pairs.
4. If you have mixed colors of lights, or some lights are not lit, you may have a problem.
No light indicates an open pair, a pair not being used, or shorted wires.
5. For example, if LED 2 is not lit, but LEDs 1, 3 and 4 are green, line 2 (pair 2 for EIA/TIA-568A) is defective.
Pair 2 is wire 3 (T
2
white / orange) and wire 6 (R
2
orange / white).
USING THE TELEPHONE LINE ANALYZER ON RJ-45 JACKS
EIA/TIA-568A
TIA-568B or
AT&T 258A
Token Ring 10 Base T
Pair 1
Pair 2
Pair 3
Pair 4
Pair 1
Pair 3
Pair 2
Pair 4
Pair 1
Pair 2
Pair 2
Pair 1
Figure 20