2820A-XX & 2825A-XX SERIES TWO DIVER COMMUNICATOR USER MANUAL
282XA-UM
REV 5.0
7
The tender can also be connected in 2-Wire mode by stacking both the earphone
(black) and microphone (red) banana plugs into this jack as shown in wiring
diagram section 3.5. The diver does not have to be connected in 2-Wire mode if
the tender is in 2-Wire mode. In order to talk to the diver, the tender must use
either the PUSH-TO-TALK BUTTON or PUSH-TO-TALK JACK. Since the headset
microphone is not active until one of the push-to-talk methods is used, there is no
chance for acoustic feedback to occur and surface conversation or noise is not
transmitted to diver and the PANEL SPEAKER can be left on. This may, for some
situations, make for a better overall diving experience. If the tender requires more
mobility at the dive site, the Amron Model 2821-28 Remote Push-to-Talk Module
can be used to extend the headset cable. It includes a push-to-talk button on a clip-
on belt module and comes standard with 25 feet (7.6 meters) of cable (custom
cable lengths are available).
The tender may also use the optional Amron Model 2405-28 Push-to-Talk
Microphone. This microphone comes with two color-coded banana plugs. The
black plug goes into the TENDER HEADSET jack and the yellow plug goes in the
PUSH-TO-TALK JACK as shown in wiring diagram section 3.5. To communicate
with the diver, the tender presses the button on the side of the microphone. There
is no chance of acoustic feedback since the PANEL SPEAKER is cut off when the
tender uses the microphone. When using the Push-to-Talk Microphone, the
SPEAKER SWITCH must be turned on in order to hear the diver.
3.1.11
TENDER MICROPHONE JACKS (RED)
– are dual banana jacks (color-coded red)
that functions as the microphone input from the tender's headset. It is only used if
the tender is in Full Duplex (4-Wire) mode.
3.1.12
PUSH-TO-TALK JACKS (YELLOW)
– are dual banana jacks (color-coded yellow)
that allows for remote keying of the push-to-talk function of the communicator. It is
use by the Push-To-Talk Microphone (Amron Model 2405-28) and the Remote
Walk-And-Talk Module (Amron Model 2822-28).
The difference between using the PUSH-TO-TALK JACK and PUSH-TO-TALK
SWITCH is that the switch allows the tender to communicate using the PANEL
MICROPHONE. If both are used at the same time, the PANEL MICROPHONE is
active. This allows another crew member to talk to the diver using the PANEL
MICROPHONE even if the tender is away from the communicator using the
Remote Push-to-Talk Module in 2-Wire mode.
3.1.13
EXTERNAL BATTERY JACKS
– The communicator can be powered using an
external battery or power supply using color coded TIP jacks. The red TIP jack is
the positive power input and the black is the negative power input. The input
voltage must be between 9 and 15 V
DC
and must be able to supply a peak current
of 3 Amps for proper operation. It is recommended that the minimum wire gauge
size to be 18 AWG or larger with a maximum length of 3 feet (1 meter).
WARNING: If you use an external power supply, the maximum voltage cannot
exceed 16 Volts.
Summary of Contents for 2820A
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