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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