UTMC OTU/MOVA Handbook
667/HB/31601/000
Page 36
Issue 5
LED Name
State
Indication
System LED
(GREEN)
OFF
No power or Processor error
Slow Flash (on
for 1 sec, off for
2 sec)
Normal operation
Fast Flash (on
for 1/4 sec, off
for 1/2 sec)
A fault has been detected – check the Fault
Table screen on the web interface.
Heart Beat (two
flashes in 1
second, then off
for 1 second)
Main software not executing. Running
bootloader and waiting local software update.
Fading up and
down in
brightness
Main software not executing. Running ‘launcher’
program and waiting local software update.
ON Steady
Processor error
Communications
LED (GREEN)
OFF
No data being received from the network
Brief flashes
Communications traffic
ON with brief
flashes OFF
Communication established and under control of
the instation
Watchdog LED
(RED)
OFF
The Processor is running and keeping the
watchdog triggered.
ON
The hardware watchdog has timed out
sometime in the past.
When illuminated, this does not mean that the
unit is currently in a watchdog state.
To clear: Hold down the Processor card Reset
button for 2 seconds.
5.4 ROUTINE MAINTENANCE
Units only require annual maintenance, which can be performed at the same time as
the inspection of other equipment. On these visits, trained personnel must switch off the
mains power to the controller and the unit.
5.4.1 Annual Maintenance
The following battery capacity test is only required if the outstation is powering the
modem directly. The battery capacity test is not required when the modem is mains
powered.
Switch the mains power off and check the outstation and modem is supported by the
battery for a minimum of 5 minutes. Do this by checking that the System LED continues
to flash and that the modem power LED remains illuminated. This tests the condition of
the Unit Support battery, and if the unit loses support within 5 minutes, the battery must
be replaced.
