Multitech MT56DSU2 Owner's Manual page 34

MT56DSU2 Owner's Manual
DESCRIPTION
This cable lets you test the MultiDSU56K when a second DSU is not available. It tests the DSU
by having the DSU generate a signal, then the cable "loops" the signal back to the DSU for
comparison to the original signal sent. You can order this cable (#45640100) from Multi-Tech, or
build one using the instructions below. Refer to Chapter 4 for test procedures.
SCHEMATIC
BUILD INSTRUCTIONS
1. Strip cable insulation 3/4"
2. Cut wires 3, 4, 5, 6 off.
3. Strip wires 1, 2, 7, 8 1/4"
4. Solder wires 1 and 8 together.
5. Solder wires 2 and 7 together.
6. Cover solder connections with 1" of shrink tube.
82017502
LOOPBACK CABLE
(MTS P/N 45640100)
1
8
TRANSMIT
1
TRANSMIT
2
3
4
RJ48S
5
6
RECEIVE
7
RECEIVE
8
6"
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