User manual

Appendix A
58
LED Status LED Detailed Description
LED Function State Status
PWR Power indicator On Converter has power
Off Converter has no power
Blinking No SNMP is installed in FRM220
FX Link Fiber link On The fiber link is up
Off No signal or fiber link is down
Blinking Remote side fiber Sync loss
Test Mode display On Any loop back test is on
Off Normal status
TD Mode display On "Data Signal" is in "High" state
Off "Data Signal" is in "Low" state
Blinking Normal Data transmitting status
RD Mode display On "Data Signal" is in "High" state
Off "Data Signal" is in "Low" state
Blinking Normal Data transmitting status
RTS Mode display On "Data Signal" is in "High" state
Off "Data Signal" is in "Low" state
CTS Mode display On "Data Signal" is in "High" state
Off "Data Signal" is in "Low" state
DCD Mode display On "Data Signal" is in "High" state
Off "Data Signal" is in "Low" state