PS Engineering PMA7000CD Installation Manual - Manual (Page 25)

PS Engineering
PMA7000CD Audio Selector Panel and Intercom System
With PCD7100-R Remote Compact Disc Player
Installation and Operator’s Manual
200-790-0010 Page 3-5 Revision 10, September 2005
C REW
(Down Position): Pilot and copilot are connected on one intercom channel and have exclusive ac-
cess to the aircraft radios. They may also listen to Entertainment 1. Passengers can continue to communi-
cate with themselves without interrupting the Crew and also may listen to Entertainment 2.
Anytime the PMA7000CD is in either the C OM 1/C OM 2, C OM 2/C OM 1 ("Split Mode"), the pilot and copi-
lot intercom is controlled with the ICS button. The passengers will maintain intercommunications, but
never hear aircraft radios.
3.6.3.1 Entertainment Input
The audio selector panel has provisions for two separate entertainment input devices. The PCD7100-R
remote CD player is usually installed as Music 1, and feeds the pilot and copilot positions. They operate
independently in the PMA7000CD. The music volume control affects the PCD7100-R music level only in
the pilot and copilot positions.
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
gradually 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.
It is also possible to use just the PCD7100-R as entertainment input device for both entertainment inputs.
However, we suggest that a switch (DPDT) be installed between PCD7100-R entertainment input #1. This
will allow the pilot to direct the music as desired.
3.6.3.2 Soft Mute and Soft Mute inhibit
The Soft Mute feature assures that the aircraft radio transmissions will not be missed due to entertainment
playing. When there is radio reception or intercom conversation, the music level is dropped to a low, or
background level. When the radio or intercom traffic ceases, the level gradually returns to normal.
The front panel ICS switch controls muting of entertainment source #1 (for pilot and copilot). Pushing this
button places the ICS in Karoake (or sing along) mode, which inhibits the soft mute feature. This allows
the music to continue uninterrupted by intercom or radio traffic when cockpit workload is appropriate.
Pushing the button again will release the mute inhibit function.
The passenger music, source #2, can be placed in the Karoake mode if a remote switch is installed in the
aircraft. See wiring information for details.