GE RPV311 Technical Manual page 43

Chapter 3 – Hardware Design
RPV311-TM-EN-7
The DFR Link indicators are lit when their links are active.
The DFR Ready indicators light up after the module self-test is completed.
The TW Busy indicator lights up when a traveling wave signal is detected and the
RA333 is transmitting the data for processing module.
The TW PPS blinks once per second indicating that the unit is synchronized.
The TW LINK indicates that the TW module in the RA333 is communicating with the
RPV311 processing unit.
The TW READY indicates that the TW module in the RA333 is healthy.
MAINS lights up when the RA333 is powered on.
RPV311
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