2830R THREE DIVER COMMUNICATOR USER MANUAL
2830R-UM
REV 5.0
17
5 INSTALLATION AND OPERATION
5.1
Operation
The Model 2830R/24 AMCOM III rack mount diver communicator is designed to mount in a
standard electronic equipment rack, 19 inches wide. The unit has connections located on both
the front and rear of the enclosure, to facilitate system wiring. For system installation all
connections can be made to the rear of the unit, eliminating wires hanging from the front
panel.
The AMCOM III panels are graphically divided into sections; Tender Controls, Diver Controls,
and Options. Items within these areas are functions or controls relating to the Tender, Diver(s)
or Optional items.
5.2
AC Power
When the unit is connected to AC power the LED power indicator on the STATUS section of
the front panel will illuminate, confirming the presence of AC power.
The AMCOM III is designed to operate from AC voltage (110/220 VAC 60/50 Hz). This option
includes two 6 volt gel cell batteries (connected in series for 12 VDC) for backup operation in
the event of loss of AC power. The switch over to battery operation is completely automatic,
and occurs whenever AC power is interrupted. The internal rechargeable battery is maintained
at full charge while the unit is operating from AC power.
CAUTION: ALWAYS exercise extreme caution when operating AC powered equipment,
especially when outdoors, where conditions are damp or wet, or when around other
equipment. Never operate unit without earth-ground or without a working ground fault
interrupter. When in doubt discontinue use immediately and have a qualified electrician
inspect your equipment before using.
WARNING: When operating your Amron Diver Communicator from AC mains, it is
critical to use a Ground Fault Circuit Interrupter (GFCI) and/or isolation transformer for
tender and diver safety. Surges and spikes are common on AC lines found onboard
ships, from local generators, or at the end of a long extension lines. These spikes can
exceed 1kV! Such spikes can be high enough to cause the input fuses on the internal
battery charger to blow and, in extreme cases, actually damage the charger circuitry.
Amron has designed this battery charger to isolate such faults to ensure that they will
not cause a safety issue for the diver or tender.
NOTE
: Do not continue to operate rechargeable batteries below the low battery condition or
permanent damage will occur. When the battery condition indicator turns to red color, shut unit
off and charge batteries.
5.3
Modes Of Operation
The 2830R/24 has the ability to operate in either 2-Wire or Full Duplex (4-Wire). Both the
diver and tender can be connected in either mode and a combination of modes can be used.
If either the diver or the tender is wired in 2-Wire mode, the tender must use a push-to-talk,
either the PUSH-TO-TALK ALL SWITCH or PUSH-TO-TALK JACK, when talking to the diver.
