Model 3920Plus Modem Installation - Paradyne COMSPHERE 3920Plus Installation Instructions Manual

Model 3920Plus Modem Installation

Before installing your standalone modem, make sure your installation site is clean and well-ventilated. Allow
space around the modem for installing cables and telephone cords, and make sure the modem is located within
reach of the ac power outlet. The distance between your modem and DTE should be minimized if DTE data rates
exceed 19,200 bps. Also, low capacitance cables may be necessary for speeds greater than 19,200 bps or distances
greater than 50 feet.
The back panel of the Model 3920Plus modem (Figure 4) has the following switches and connectors:
An ON/OFF power switch.
An 8-pin DIN type power receptacle (PWR) for the dc power supply.
An 8-pin modular keyed jack (LEASED) for 4-wire/2-wire leased lines.
An 8-pin modular keyed jack (DIAL) for backup lines (2-wire dial or 2-wire leased).
A 4-pin modular jack (NMS) for the Network Management System connection.
One (singleport) or four (multiport) 25-pin DB-25-S receptacles for the DTE interfaces.
Model 3920Plus Input Voltage Requirements
The power supply used with the Model 3920Plus modem (Figure 4) is auto-sensing and capable of operating
(without reconfiguration) with input voltages from 100 Vac to 250 Vac, and input frequencies from 50 Hz to
60 Hz.
3920-A2-GK41-60 February 2002
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