Operator's Manual

2. MAINTENANCE, TROUBLESHOOTING
2-10
Note: Detection of RX malfunction
1) Detection of TDMA RX malfunction
Frequency error
PLL chip on receiver board generates lock or unlock signal for
synthesizer.
MPU watches and sets status flag which reflects data of ALR sentence.
ID 003 for RX1, ID 004 for RX2
2) Detection of DSC RX malfunction
General error
DSC Error (ID: 005) will happen in case of DSC MPU could not receive
format specifier of the data from DSC amplifier unless RSSI exists more
than 90 seconds.