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4.1
CONTROLS AND ADJUSTMENTS
4.1.1
System power: The MK-III's system power switch is a 2-position toggle
that turns the unit on and off. Allow 2 seconds for the unit to fully power up.
WHILE OPERATING THE MK-III, ENSURE THE DIVER'S MOUTH/LIPS
ARE NOT IN DIRECT CONTACT WITH THE MOUNTING SCREWS OF
THE MICROPHONE. FAILURE TO DO SO MAY CAUSE A MILD SHOCK
WHEN THE MK-III PUSH-TO-TALK (PTT) BUTTON IS PRESSED. TO
AVOID SHOCKING, DO NOT PLACE MOUTH/LIPS ON THE SCREWS OF
THE MICROPHONE AND/OR INSULATE THE SCREWS WITH A RUBBER
PLEASE CONTACT OTS IF YOU REQUIRE A RUBBER BOOT FOR YOUR
Two-Wire or Four-Wire selection: Only for banana connector versions.
To select Two-wire transmit mode, plug the earphone banana connector
into the microphone banana connector. (See Fig. 5 on the next page) This
allows for a diver to transmit or receive, but never both at the same time.
To select Four-wire mode, plug the microphone connector into the
microphone jack and the earphone connector into the earphone jack. (See
Fig. 6) This will allow the divers to both listen and talk at the same time.
Two-Wire Operating Instructions: Note: Do not connect divers' ear/
mic assembly in the two wire configuration if you intend to use the Diver
Pre-Amp option. Additionally, Pre-Amplified microphones cannot be used
in two wire mode. Do not engage the Pre-Amp option in two wire mode.
While in the Two-wire configuration, any diver can talk to the Tender, but
not to other divers. If the Tender wishes to talk to the divers, the Tender
must press the PTT button on either their headset or on the panel.
While the PTT button is depressed, the divers cannot communicate with
the Tender; they must wait until the Tender has let go of the PTT button.
In the case that the Tender wants a Diver to talk to the other Divers, the
Tender must depress the Earphone/PTT knob of the talking diver.
506279-000
SECTION 4
OPERATION
System settings
WARNING
APPLICATION
BOOT.
13
REV. A
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