Offset Adjustment; Redundancy Systems - Converter Management - Comtech EF Data UT-4579 Installation And Operation Manual

UT-4579 X-Band Up Converter
Appendix A
A.4.3

Offset Adjustment

Use the offset to compensate for cable and switch losses. When you initially set
up and test the system, you must force each converter to backup, and adjust the
offset to minimize gain mismatch between the normal and bypassed mode. This
offset will be different for each converter and is stored in a table in the backup
unit.
Do these steps to configure the offset adjustment:
1. Connect a signal source to the input and a power meter or spectrum
analyzer to the output of the first online converter.
2. Record the output power.
3. Force a backup of the first online unit.
4. Adjust the offset until the output power matches what was recorded in
Step 2.
5. Restore the online unit, and then repeat these steps for the other online
units.
A.5 Redundancy Systems – Converter Management
See Appendix B. MAINTENANCE
information about managing the backup and inline converters that
comprise your redundancy system.
TROUBLESHOOTING for
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