Comtech EF Data KPA080 Installation And Operation Manual page 49

Redundant Configuration
Make sure the Online Unit is "online" and transmitting. This can be verified through the
Configuration Menu, and the front panel LEDs.
1. Apply an RF signal to the RF redundancy input isolator. Monitor the output
3. Adjust the input signal power level and attenuation of the Online Unit to arrive at
4. Record the output level of the Online Unit in dBm.
5. Force the backup unit to be the active path as outlined in the CONFIGURATION
6. If the output levels are equal, no more adjustment is necessary. Otherwise
4-4
power level at the waveguide switch output. (Make sure not to apply too large of
an input signal which will saturate the amplifiers. Also be sure to have a properly
rated load to measure the output power.)
the desired output power level.
Menu. Ensure the Offset Value at this point is 0.0 dBm. Record the output level
in dBm of the back-up unit.
proceed as follows.
KPA080 Ku-Band Solid-State Power Amplifier
Rev. 0