RAD Data comm Strap Selection Setting Internal Jumpers Switches, ASM-20 X.21 Rear Panel

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ASM-20Installation and Operation Manual
VAC	T 250V
~230	-1A

Chapter 2. Installation and Setup

D T E
X.21	Line Connector

Strap Selection

Warning

Setting Internal

Jumpers and

Switches

Figure 2-2 ASM-20 - X.21 Rear Panel

Before connecting power to the unit, determine the required configuration of ASM-20 and position the straps accordingly. The PCB strap locations of Figure 2-3correspond to the numbers listed under the "Strap Identity" column in Table 2-1.

HIGH VOLTAGE

Only authorized and qualified service personnel should have access inside the equipment.

Disconnect the ASM-20 power cable and leased line connections before opening the top cover.

To set the jumpers and switches:

1.Disconnect the power cable.

2.Loosen the screws holding the bottom cover in place.

3.Remove the top cover.

4.Adjust the jumpers as required. See Table 2-1.

5.Replace the top cover and tighten the retaining screws.

Electrical Installation 2-3