PS Engineering PMA8000C Installation Manual - Manual (Page 26)

PS Engineering
PMA8000C Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0303 Page 3-5 Rev. 3, May 2014
3.7.2 Intercom Volume Control (7)
The inner volume control knob adjusts the loudness of the intercom for the pilot and copilot. It has no effect
on selected radio levels, music input levels or passengers' volume level.
The outer volume control knob controls intercom volume for the passengers. It has no effect on radio or
music levels.
Adjust the radios and intercom volume for a comfortable listening level. Most general aviation headsets
today have built-in volume controls; therefore, volume also can be further adjusted at the individual head-
set.
3.7.2.1 Mono headsets in Stereo Installation
The pilot and copilot positions work with stereo or mono headsets. All passenger headsets are connected in
parallel. Therefore, if a monaural headset is plugged in to a PMA8000C Stereo installation, one channel
will be shorted. Although no damage to the unit will occur, all passengers with stereo headsets will not hear
one channel, unless they switch to the “MONO” mode on their headset.
3.7.3 Intercom Modes (8)
The “ICS” pushbutton switch on the left side of the panel provides the selection of the three intercom
modes. The description of the intercom mode function is valid only when the unit is not in the "Split" mode.
Then, the pilot and copilot intercom is controlled with the Mute button.
This button cycles through the intercom modes, from top to bottom, then bottom to top as: ISO, ALL Crew
and Crew, ALL, ISO. An LED shows which mode is currently active.
I SO : The pilot is isolated from the intercom and is connected only to the aircraft radio system. He will hear
the aircraft radio reception (and sidetone during radio transmissions). Copilot will hear passengers’ inter-
com and entertainment, while passengers will hear copilot intercom and entertainment. Neither will hear
aircraft radio receptions or pilot transmissions. The pilot can hear music if desired, this feature is not stored
when the audio panel is turned off. See
§3.8.1
A LL : All parties will hear the aircraft radio and intercom. Crew and passengers will hear selected enter-
tainment. During any radio or intercom communications, the music volume automatically decreases. The
music volume increases gradually back to the original level after communications have been completed.
C REW : 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 interrupting the Crew and may listen to entertainment as configured.
3.8 Music Distribution and Music Muting (6)
The PMA8000C has two independent music inputs at the rear connector, and a front panel jack. The
PMA8000C also has the ability to receive streaming music from a Bluetooth-enabled device.
Music 1 will be heard by the pilot and copilot positions. Music 1 can also be distributed to the passengers
by holding down the MUTE switch until you hear “Music #1, All Headsets”. (See § 3.11.3).
(Music #1 is
only the rear jack, only the crew hears the front panel jack) , and the streamed music in the PMA8000C is
also Music 1.
NOTE:
All music devices should be turned off for take off, landing, or any critical phase of flight. FAA Regulation
14 CFR 91.21 restricts the use of portable electronic devices.
§91.21 “(a) Except as provided in paragraph (b) of this section, no person may operate, nor may any opera-
tor or pilot in command of an aircraft allow the operation of, any portable electronic device on any of the
following U.S.-registered civil aircraft. . .
“(b)(5) Any other portable electronic device that the operator of the aircraft has determined will not cause
interference with the navigation or communication system of the aircraft on which it is to be used.”