Comtech EF Data SLM-5650A - Manual (Page 324)

SLM-5650A Satellite Modem Revision 8
Appendix A MN-SLM5650A
A–2
VAR ATTEN
NOISE
GENERATOR
ATTEN VAR
DATA
CONNECTORS
BER
TEST SET
TX IF
RX IF
BERT
MODEM UNDER TEST
A.2.1 Interface Checkout
Use the test setup in Figure A-1 and the procedure that follows to verify the data interface.
Figure A-1. Fault Isolation Test Setup
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.