INSTALLATION

RSD-20 OPERATOR'S MANUAL

2.4.2 Rear Panel

Six connectors are located on the rear panel of the RSD-20, consisting of five channel connectors (four for the sub-channels and one for the main channel) and one 3-pin power connector, which also includes the fuse holder. The five channel connectors are 34-pin connectors for the V.35 interface or 15-pin, D-type for the X.21 interface. The ON/OFF power switch and the 110/220 VAC selection switch are located also on the rear panel (see Figure 2.1).

2.4.3 Internal Switches and Strap Selection

The internal switches and straps on the RSD-20 should be configured to meet system requirements. In order to change the settings, the following steps should be followed:

a)Disconnect the AC power cable.

b)Remove the RSD-20 top cover, loosen the two screws on the rear panel and slide back the top cover.

c)Identify the straps according to Table 2.1 and Figures 2.3 and 2.4.

POWER

MAIN CHANNEL

SUB CHAN. 4

SUB CHAN. 3

SUB CHAN. 2

SUB CHAN. 1

~230V~115V F-0.400A S.B.

Figure 2.1

Rear Panel

d)Install the straps/switches in the required position.

e)Reinstall the top cover.

CAUTION Disconnect the instrument from the input line power before removing covers.

2.2

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RAD Data comm RSD-20 operation manual Rear Panel, Internal Switches and Strap Selection