PS Engineering PMA6000M-C Pilot’s Guide - Manual (Page 7)

202-066-0002 7 PMA6000 –Mono Pilot Guide
rotating the S QL control knob clockwise until you no longer
hear the engine noise in the headphones. When the micro-
phone is positioned properly near your lips, normal speech lev-
els should open the channel. When you have stopped talking,
there is a delay of about ½ second before the channel closes.
This helps prevent choppy communications.
Some PMA6000 installations may include an intercom Push-
to-talk button, located n a yoke or stick. In these installations,
turn the squelch control fully clockwise, and then use the asso-
ciated ICS P-T-T to talk on the intercom.
Intercom Modes
The center switch is a 3-position mode se-
lector that allows the pilot to tailor the in-
tercom function to best meet the situation.
The description of the intercom mode func-
tion is valid only when the unit is either in
the C
OM 1 or C OM 2 position of the Mic Selector switch.
When the unit is in the "Split" mode, only the passengers have
intercom function.
I SO : (Up Position): The pilot is isolated from the intercom and
is connected only to the aircraft radio. He will hear the aircraft
radio reception (and sidetone during radio transmissions). Co-
pilot and passengers will hear the intercom and music on En-
tertainment 1, but not the aircraft radio receptions or pilot
transmissions.
A LL : (Middle Position): All parties will hear the aircraft radio,
intercom, and music from entertainment input #1. However,
during any intercom communications, the music volume auto-
matically decreases when SoftMute™ is active. The music
volume increases gradually back to the original level after
communications have been completed.
C REW (Down Position): Pilot and copilot are connected on
one intercom channel and have exclusive access to the aircraft
radios. They may also listen to Entertainment 1. Passengers
can continue to communicate with themselves without inter-