Public address mode – PS Engineering PMA8000D Installation Manual User Manual
Page 13
PS Engineering
PMA8000D Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0304
Page 2-5
Rev. 6, Oct. 2014
The pilot’s Bluetooth device is presented to the pilot’s audio panel (PMA8000D Pilot) only. Music and
telephone is not shared.
The copilot’s Bluetooth device is presented to the copilot’s audio panel (PMA8000D Copilot), and provid-
ed music for the copilot and any passengers that may be connected to an intercom expansion unit. The copi-
lots cellular telephone can also be shared with the pilot. See § 3.4.
2.4.8.1
Cell phone Sidetone
As shipped from PS Engineering, the PMA8000D provides cellular telephone sidetone (the user’s voice fed
back to the headset). Some cell phones do provide sidetone. In PMA8000D audio panels, Telephone
sidetone can be disabled by pressing the COM 3 and ADF buttons for more than one second. NOTE: This
will not provide cellular telephone sidetone in ISOLATE intercom mode, because the intercom signal is
not available to the pilot.
NOTE
Unauthorized use of unapproved cellular telephone devices in aircraft is subject to FCC enforcement action,
which may include a $10,000 fine per incident.
FCC Regulation 47 CFR § 22.925 Prohibition on airborne operation of cellular telephones.
Cellular telephones installed in or carried aboard airplanes, balloons or any other type of aircraft must not
be operated while such aircraft are airborne (not touching the ground). When any aircraft leaves the ground,
all cellular telephones on board that aircraft must be turned off.
PS Engineering, Inc. does not endorse using unapproved cellular telephone equipment in flight, and takes
no responsibility for the user’s action.
PS Engineering does not guarantee compatibility with personal cellular telephones. For a list of phones that
have been tested, visit
.
2.4.9
Public Address Mode
By pressing the Mute and SPR pushbuttons at the same time, the PMA8000D will be placed into public
address (PA) mode. In this mode, the pilot will be talking over the cockpit speaker when he presses his PTT
switch. Copilot will still continue on the selected COM radio.
When the discrete Output is enabled, J2 Pin 19 will go low when in PA mode, providing a logic level that
can be used to incorporate a speaker-switching scheme. This 50 mA circuit (10Ω Z) can control a switching
means such as a relay that would transfer the speaker output amplifier from the cockpit speaker to drive
another cabin speaker. If the PA mode is used with a microphone in proximity to an active cockpit speaker,
feedback might result.
To enable the PA discrete Output located at the rear connector, the internal configuration jumper, J4,
MUST be placed across both pins in the header. This jumper is shipped as open from the factory.
NOTE: Do NOT connect both audio panels directly to a single PA speaker. This could damage the
audio panel.
2.4.9.1
Public Address Output Jumper
1.
Remove qty. 5 Phillip head screws from the PM8000B. NOTE: IF PRESENT, THE SCREW IN
THE REAR OF THE PANEL IS A DIFFERENT LENGTH THAN THE OTHER FOUR.
YOU MUST PUT THE SHORTER LENGTH SCREW BACK IN THE SAME LOCATION
OR DAMAGE WILL OCCUR. See Figure #1.