A.2.1 Interface Checkout; Figure A-1. Fault Isolation Test Setup - Comtech EF Data SLM-5650A Installation And Operation Manual

SLM-5650A Satellite Modem
Appendix A

A.2.1 Interface Checkout

Use the test setup in Figure A-1 and the procedure that follows to verify the data interface.
NOISE
GENERATOR
1. Ensure the correct data and IF interface is selected and configured for the proper mode of
operation.
2. Connect a BER test set to the appropriate modem data connector as shown in Figure A-1.
3. Set up the modem for baseband loopback operation by selecting I/O1 (TEST: Loopback  I/O1)
from the front panel menu. The modem will run error-free.
VAR ATTEN
VAR

Figure A-1. Fault Isolation Test Setup

ATTEN
A–2
Revision 8
MN-SLM5650A
TX IF
MODEM UNDER TEST
RX IF
BERT
CONNECTORS
BER
TEST SET
DATA