Interface Checkout; Figure 5-1. Fault Isolation Test Setup - Comtech EF Data SLM-3650 Installation And Operation Manual

SLM-3650 Satellite Modem
Maintenance
5.1.1

Interface Checkout

Use the following procedure and the test setup in Figure 5-1 to inspect the interface.
1. Connect a BER test set to the appropriate modem data connector as shown in
Figure 5-2. Refer to Chapter 2 for external modem connections.
2. Set up the modem for baseband loopback operation by using the Configuration
Interface front panel menu (Chapter 3). The modem will run error free. Refer to
Chapter 3 for a block diagram of the baseband loopback operation.
3. Change the modem from baseband loopback to interface loopback operation by
using the Configuration Interface front panel menu (Chapter 3). The modem will
run error free. Refer to Chapter 3 for a block diagram of the interface loopback
operation.
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Figure 5-1. Fault Isolation Test Setup

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