Meridian America Link/Customer Controlled Routing manual Gandalf LDS 120E limited-distance modem

280Chapter 11: Peripheral device cabling interface

Gandalf LDS 120E limited-distance modem

The Gandalf LDS 120E limited-distance modem allows you to extend the distance between the IPE Module or the Application Module and any connected peripheral up to a nominal distance of 8 km (5 miles). Figure 81 illustrates the hardware configuration required to use the Gandalf LDS 120E modem.

Ensure that the jumper options match the settings shown in Figure 82. The switch on the back of the modem should be set to the ÒnormalÓ position.

Connecting the Gandalf LDS 120E modem to the IPE Module or the Application Module

1Connect the DB25 connector from the IPE Module or the Application Module port to a null-modem adapter.

2Connect the null-modem adapter to the female DB25 socket on the first Gandalf LDS 120E modem.

3Connect the first Gandalf LDS 120E modem to the second modem with 2-pair twisted cable (24 AWG). This cable cannot exceed 8 km (5 miles).

4Connect the second Gandalf LDS 120E modem to the peripheral device using a straight DB25 cable.

5Once the modems are connected, turn on the power and ensure that the DCD lamp on each modem comes on.

This lamp indicates that each Gandalf LDS 120E modem is active.

553-3202-210 Standard October 1998