Installation manual

APPENDIX 1
LED Indications
The Signal Strength LEDs are Red and Green. See Fig 1 & 2.
The Signal Strength LEDs will give the signal strength indication that Dualcom
is receiving, after Dualcom has been registered onto the VDN network (and the
NVM is programmed). These are updated every second.
Green On, Red Off. High Signal Strength
Red & Green On. Medium Signal Strength
Red On, Green Off. Low Signal Strength
Any of the above, plus... Dualcom can communicate with a local
LED(s) On + short off-blink. base station, VDN path status = OK.
(1 short off-blink per sec)
Red Off, Green Off Dualcom can not hear any base stations
VDN path fault or signal strength = 0, OR...
NVM is blank or programmed incorrectly.
Red & Green flashing on/off 12 volt supply to Dualcom has failed.
(Together, once per sec) Low-power mode is active or will start within
10 minutes.
The Service LED is Yellow. See Fig 1 & 2
Registering indications may be seen.
Yellow Service LED Flashing Dualcom is detecting VDN base-stations and
for 45 seconds after registering onto the VDN communications
power-up/reset network.
Yellow Service LED Flashing The NVM type is incorrect (should be 93C66N)
for less than 10 seconds or it is plugged into the socket incorrectly.
after power-up/reset.
Yellow Service LED On solid. Dualcom is locked onto a VDN base station.
When registration has been successful then
the radio path is operational.
Yellow Service LED Flashing Dualcom is searching for a VDN base station
Flashing later than 1 minute but is unable to hear any. The radio path
after power-up/reset. will not operate.
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