Troubleshooting ______________________________________________________________________
RF-MCGARDPRO
Hubbell Power Systems, Inc.
–
RFL™
Products
July 1, 2022
©2022 Hubbell Incorporated
8-14
RX
Address
Alarm
Addressing mismatch
Change RX address to match the remote terminal
TX address.
Inadvertent loopback
Check for inserted loopbacks in the communications
circuit.
Communications circuit
failure
Correct communications circuit issues. Verify no
alarms on the communications interface module.
Ping Pong
Alarm
Ping Pong threshold set
too low
Verify ping pong threshold setting is appropriate for
normal conditions and expected circuit latency.
Network circuit
switching
Circuit switching on the network (i.e. SONET) has
cause additional latency exceeding the set
threshold.
Communications circuit
failure
Correct communications circuit issues. Verify no
alarms on the communications interface module.
Bit Error
Rate Alarm
Multiple
communications timing
sources
Synchronous communications must have only one
timing source. The local and remote terminals, as
well as the network can provide a timing source. If
network timed the local and remote terminals must
be set to Loop timing. Otherwise only one terminal
can be set to Internal timing.
Communications circuit
failure
Correct communications circuit issues. Verify no
alarms on the communications interface module.
Environmental issues
Electromagnetic Interference, improperly run cables
and other environmental issues can cause bit errors.
8.6
Digital Comms Troubleshooting
Fields in Alarm are marked Red
Figure 8-9. Digital Comms Alarm indicators