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4.
You can use the MT-7028 Transmitter and Receiver to validate
the cable map on RJ11 and RJ45 connectors. The cable map
function finds the most common wiring status on twisted pair
cabling: good, shorts, opens, and crossed pairs as shown in
Figure 7.
•
Good wiring: Each LED that corresponding to an active
pin flashes briefly and in a stairway order.
•
Shorts: If two LEDs turn on for 1 second at the same time,
those two pins are shorted together. If more than 2 wires
are shorted together, the LEDs for the shorted pins
indicate opens.
•
Opens: If an LED flashes briefly, then no LEDs turn on,
that pin is open.
•
Crossed pairs: If one LED flashes briefly, then another
LED lights for one second, the wire for the first LED is
crossed pairs to the pin for the second LED.
5.
Each LED that corresponds to an active pin flashes briefly, it
should light for about 1 second. The brief flash shows which
LED is next in the sequence.
MT-7028
Transmitter
Figure 6 Different Connector's Cable Map
16
MT-7028
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