User manual
DTS Broadcast   PDH Microwave Digital Radio User Manual 
-44-
Press  _keys to appear similar following message: 
This screen displays PLL status of ODU. The RF indicates the RFLO is locked or not; the TX 
indicates the TX LO is locked or not, and the RX indicates the RX LO is locked or not. These display 
“L” for locked or “N” for not locked. These values are read from ODU, if read failure, will display 
“X”. 
Press 
_keys to appear similar following message: 
This screen displays loop back testing status of ODU. For message descriptions list below: 
Normal: Normal operating 
Frame: Frame loop back testing 
Port:Port loopback (from service card)testing. 
IDUIF: IDU IF loopback testing, test the modem is operating correctly or not. 
ODU_L: ODU Local loopback testing, test the ODU is operating correctly or not. 
Press 
__keys to appear service card message. The messages of different service cards 
 displayed in LCD are different. See 6.1.1.1~6.1.1.2 










