How to Test the RSSI Signaling path procedure

How to Test the RSSI Signaling path procedure

1. Inject an RF signal into the TTA test port that produces -90 dBm at the output of the TTA Control Unit. Check the other branch. If the levels are within 1 dB then the path from the
    TTA   LNA down to the control unit is good. (This tells us the DIP switch settings in the cabinet RMC's for each branch are set correctly)

 

2. If the test above is good then use a subscriber programmed in a conventional mode on a frequency at the site. From some distance away (1/4 mile or so) key the subscriber and     
    have someone else monitor the RSSI's. If this test is good then the path from the Rx antenna to the BR's is good. Check the RSSI on both Branches while someone keys the
    subscriber unit to assure we have similar RSSI values shown in CSS. ( If they are greater than the configured delta; default is 5db in CSS, than we have an issue with the RMC
     TTA  programming or a path issue with the RF antenna or transmission line)

 

3. When there is a delta greater than configured delta, the base station accumulates time against its counter..... to reset the accumulated counter in a base station you can do a warm
    reset to bring it back to zero....The station self resets the counter when there is an active call above -95 where there is no delta for a short period.