Installing the model 3550 dsu – Paradyne 3551 User Manual

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Installing the Model 3550 DSU

Before installing the DSU, label the circuit breaker that protects the ac wall outlet, and
make sure that it is set to ON. Then, proceed with the installation.

Procedure

1. Place the DSU in its planned location. Make sure the ventilation slots are not

blocked.

2. At the rear of the DSU, insert the ac transformer’s circular plug into the interface

labeled POWER.

3. Plug the ac transformer’s 3-prong plug into the ac wall outlet.

WARNING:

Only use the power transformer designed for the Model 3550 DSU. Using
other transformers may result in personal injury or damage to the equipment.

EIA-232-D/V.24

Interface

V.35 Interface

NMS Jack

DBM Jack

DDS Jack

Low Voltage

AC Power In

99-16243

Tabletop

AC Transformer