PS Engineering PMA7000H Installation Manual - Manual (Page 24)

PS Engineering
PMA7000H Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-780-0429 Page 3-5 Rev. 4, Dec 2012
Anytime the PMA7000H is in either the C OM 1/C OM 2, C OM 1/ C OM 3 ("Split Mode"), the pilot and copilot
intercom is controlled with the ICS button. The passengers will maintain intercommunications, but never
hear aircraft radios.
3.6.3.1 Alternate Intercom Mode (Serial Number beginning with letter “B” and above)
When the PMA7000H is toggled into “Alternate Intercom Mode,” using a switch connected to Bottom
Connector Pin 14 is grounded, the passengers will NOT hear aircraft radios, even in the all mode. They will
be able to converse with the crew. However, when the aircraft radio becomes active, the intercom audio
from the passengers is muted, allowing the crew to focus on the radio.
Mode Pilot Hears Copilot Hears Passenger Hears Telephone Comments
Isolate A/C Radios
Pilot Sidetone
(during radio transmis-
sion)
Entertainment 1 is
Muted
Copilot and passenger
intercom
Entertainment #1
Passenger and Copilot
intercom
Entertainment #2
“Phone Booth” mode
Pilot has exclusive use of
the telephone.
In TEL, Pilot & Copilot con-
nected to Com 1 for PTT TX
and receive. Others hear Tel
if off hook.
This mode allows the
pilot to communicate
without the others both-
ered by the conversa-
tions. Copilot and pas-
sengers can continue to
communicate and listen
to music
All Pilot
Copilot
A/C Radio
Passengers
Entertainment #1
Copilot
Pilot
A/C Radio
Passengers
Entertainment #1
Passengers
Pilot
Copilot
A/C Radio
Entertainment #2
All have access to phone
through Hook Switch. Pilot
access through TEL switch.
All hear telephone audio if
off hook.
This mode allows all on
board to hear radio re-
ception as well as com-
municate on the inter-
com. Music and intercom
is muted during intercom
and radio communica-
tions
Crew Pilot
Copilot
A/C Radio
Entertainment #1
Copilot
Pilot
A/C Radio
Entertainment #1
Passengers
Entertainment #2
Pilot and copilot don’t have
phone access, unless mic
sel in TEL. Passengers
have phone through Hook
Switch, Passengers hear
phone audio.
This mode allows the
pilot and copilot to con-
centrate on flying, while
the passengers can
communicate amongst
themselves.
Alternate
Intercom
Mode
Pilot
Copilot
A/C Radio
Passengers (when
radio silent)
Entertainment #1
Pilot
Copilot
A/C Radio
Passengers (when
radio silent)
Entertainment #1
Passengers
Pilot
Copilot
Entertainment #2
All have access to phone
through Hook Switch. Pilot
access through TEL switch.
All hear telephone audio if
off hook.
This mode allows the
crew to hear radio recep-
tion (but not bother the
passengers) as well as
communicate on the
intercom. Passenger
mics are removed from
the crew audio when the
radios are active.
Table 3-2 Intercom Modes
3.6.3.2 Entertainment Input
The audio selector panel has provisions for two separate entertainment input devices. Music 1 feeds the
pilot and copilot positions. They operate independently in the PMA7000H. The volume control does not
affect the music level.
While in the ISO (Isolate) mode, the copilot will hear Entertainment 1 while the four passengers will hear
Entertainment #2. The pilot will hear entertainment 1, at a muted level. In normal operation, whenever a
person speaks, or if the aircraft radio becomes active, the music will automatically mute and then will grad-
ually return to the original listening level when the intercom or radio conversation ceases.
When in the A
LL mode, pilot and copilot will hear Entertainment 1 input while all passengers will hear the
Entertainment 2 source. While in the C REW mode, pilot and copilot will hear entertainment input #1 while
the passengers may listen to entertainment input #2.