2830A-XX SERIES THREE DIVER
PORTABLE COMMUNICATOR USER MANUAL
283XA-UM
REV 7.0
21
Full Duplex (4-Wire)
communication is defined as a dual communication path, a signal path
(a pair of wires) for up-link and a signal path (a pair of wires) for down link. A common
example of Full Duplex communication is the telephone. Full Duplex (4-Wire) with a tender
wearing a headset has the advantage of natural communication without having to use the
PUSH-TO-TALK BUTTON. This keeps the tender's hands free to perform other tasks. It does
not require the same level of discipline to achieve clear communications that 2-Wire does. It
has the advantage that neither the diver nor the tender is cut off when the other is talking,
allowing the tender and all divers to constantly communicate with each other. Because the
diver's microphone is not connected in parallel with the earphone, the diver is louder and
potentially clearer in Full Duplex (4-Wire) mode.
4.4.1
2-WIRE OPERATION
For communicator model 2830A (Binding Post Connectors) - To connect the diver
in 2-Wire mode, connect the communication umbilical wires to the DIVER
MICROPHONE (RED) binding post jack on the communicator as shown in the 2-
Wire diagram in section 3.6. If the umbilical uses a banana plug, simply insert the
plug into the binding post jack. Verify that it is firmly and completely seated. This
may require that the external plastic nut be tightened down. If the umbilical uses
bare wires, loosen the external plastic nut of the binding post jack. Either insert the
bare end of the wire into the hole in the metal shaft of the binding post or firmly
wrap the wire around the shaft. Tighten the nut until the bare wire is firmly fastened
by the nut. The nut should not be fastened on the insulation of the wire nor should
any of the bare wires touch.
For communicator models 2830A-09, 2830A-15, 2830A-16, and 2830A-17 that use
5-Pin MS Connectors, connect the communications cable from the divers umbilical
(hat/helmet) to Diver 1, Diver 2 and Diver 3, Umbilical MS Connector Pin A & B. Pin
A should have one of microphone wires and one of earphone wires, same thing for
Pin B. Wires should be well soldered to the mating connector. Pin A & B wires
should not touch each other.
The tender can operate in the 2-Wire mode without a headset or push-to-talk
microphone. When the tender wants to talk to the diver, he presses the PUSH-TO-
TALK BUTTON on the front panel and speaks clearly into the PANEL MIC. When
done speaking, the tender releases the PUSH-TO-TALK BUTTON to allow the
diver to communicate.
When the tender uses a headset, follow the headset wiring diagram in section 3.9.
Please note that when in the 2-Wire mode, the tender must press the Push-to-Talk
Switch on the front panel to be heard.
When using the Amron Model 2405-28 Hand Held Push-to-Talk Microphone, follow
the wiring diagram in section 3.8. Always talk close to the microphone, with the
edge of the lip guard just touching the upper lip. This is important because the
noise-canceling feature accepts close sounds best and discriminates against
sounds greater than 1/2-inch (12 mm) away.
If using the Amron Remote Walk-and-Talk, Model 2821-28, the tender may press
the Push-To-Talk Switch on the belt module to speak to the divers.
Summary of Contents for AMCOM III 2830A Series
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