Paradyne 3615, 3616 manual Where to Place the DSU, Installing the DSU

COMSPHERE DualFlow Data Service Units

Where to Place the DSU

As mentioned earlier, the DSU must be placed within 6 feet of a dedicated grounded ac outlet that is protected by a circuit breaker.

The distance between the DSU and its DTE must be within EIA-232-D/V.24 limits, or V.35 limits if operating the DSU at speeds greater than 19.2 kbps.

•For the EIA-232 connector, the typical maximum distance is 50 feet at speeds less than or equal to 19.2 kbps. If a longer distance is needed, use high quality, low capacitance cable and ensure that the effective shunt capacitance of the circuit (measured at the DSU and including the capacitance of the cable and the DTE) does not exceed 2500 picofarads, as specified in EIA-232-D.

•For the V.35 connector, the maximum distance recommended between the DSU and the DTE is nominally 1000 feet.

Allow 1 to 2 feet of clearance around the DSU for access and cable connections during installation.

Installing the DSU

Before installing the DSU, label the circuit breaker that protects the ac wall outlet, and make sure that it is set to ON. To 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 (Figure 2-2), insert the ac transformer, circular plug into the interface labeled

POWER.

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

CAUTION

Only use the power transformer designed for the Model 3615 DSU. Using other transformers may result in personal injury or damage to the equipment.

Figure 2-2. Model 3615 DSU Electrical Connection

2-4 December 1996 3615-A2-GB20-20