Appendix A. Troubleshooting; Overview; System Checkout - Comtech EF Data SLM-5650B Installation And Operation Manual

Appendix A. TROUBLESHOOTING

A.1

Overview

This appendix provides information pertaining to the SLM-5650B Satellite Modem's system
checkout and fault isolation and identification.
A.2

System Checkout

This equipment contains parts and assemblies sensitive to damage by ESD.
Use ESD precautionary procedures when touching, removing, or inserting
PCBs.
System checkout entails following the test instructions provided for the modem PCB. The
instructions include tables and test points for ensuring that the E
typical eye patterns, and constellations are correct. If a test failure occurs, refer to the fault
isolation checkout procedures provided in this appendix.
This section provides instructions for checking the modem setup within the
earth station. Due to the complexity of the modem circuitry, the checkout
procedure should be used only as a basic guideline. More complicated
maintenance tests are beyond the scope of this manual.
Appendix A
/N , typical output spectrums,
b 0
A–1
SLM-5650B Satellite Modem
Revision 2
MN-SLM-5650B