Amron AMCON II 2825R Series, User Manual, Page: 17 / 36

2825R-XX SERIES TWO DIVER RACK
MOUNT COMMUNICATOR USER MANUAL
282XR-UM REV 5.0
14
4 INSTALLATION AND OPERATION
4.1 Operation
The 2825R-XX Series AMCOM II 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 II 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.
4.2 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 II is designed to operate from AC voltage (90-264 V
RMS
50-60 Hz) with a 12
VDC gel cell battery 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. AC power indicator on the optional panel confirms the presence of 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: All AC powered equipment should be used with a ground fault interrupter.
All ground fault interrupters have a built in test circuit, check for proper operation
before using.
NOTE : Do not continue to operate rechargeable battery below the low battery condition or
permanent damage will occur. When the battery condition indicator turns to red color, shut
unit off and charge battery.
4.3 Modes Of Operation
The 2825R-XX Series communicator 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.
2-Wire communication is defined as a single communication path, normally the diver is the
priority signal path
–
tender listens to diver. Signal reversing is accomplished by pushing the
PUSH-TO-TALK BUTTON
–
diver hears tender. Often times a 4-conductor communication
cable is used with two wires tied together as a pair for redundancy, this is still a 2-Wire