RF Unit RX Channel

Dear Gents, Kindly, we have 2 RTWP Alarms { RF Unit RX Channel RTWP/RSSI Too Low & RF Unit RX Channel RTWP/RSSI unbalance} please find b/m points for alarm " Description , Possible Causes & Handling Procedure" please follow b/m procedures & also should be all FM team know all mention points well

1- RF Unit RX Channel RTWP/RSSI Too Low Description This alarm is reported when the RTWP/RSSI on the RX channel of the RF unit is lower than -114 dBm. Possible Causes  The setting of attenuation of the RF unit is incorrect.  The TMA is faulty.  The feeder installation is improper. For example, the feeder connector is loose, soaked or damaged.  The RF unit is faulty. Handling Procedure 123456-

Check the attenuation of the RF unit>>>>>>"check with BO" Reconnect the jumper to the antenna port of the RF unit on site>>>>>>>>"FM task" Reset or Replace the TMA on site>>>>>>>>"FM task" Reset the RF unit on site>>>>>>>>"BO & FM task Replace the RF unit on site>>>>>>>>"FM task" Escalate to RF team to start the frequency scanning test>>>>>>>>"RF team"

2- RF Unit RX Channel RTWP/RSSI unbalance Description

This alarm is reported when the difference between the RTWP of the main RX channel and the RTWP of the diversity RX channel exceeds 10 dB. Possible Causes 

The setting of attenuation on the RX channel of the RF unit is incorrect.



External interferences exist on the main or diversity antenna of the RF unit.



The feeder connected to the RF unit is faulty..

Handling Procedure

1- Check the parameter settings of the RF unit >>>>>>"check with BO" 2- Reconnect the jumper to the antenna port of the RF unit on site>>>>>>>>"FM task"

3- Power off the RF unit on site and then power it on>>>>>>>>"FM task" 4- Escalate to RF team to start the frequency scanning test. >>>>>>>>"RF team"