PS Engineering PMA450A Manuel utilisateur

202-450-0001 Page 1 August 2017 PMA450A Pilot Guide

Covered under one or more of the following Patents

4,941,187; 5,903,227; 6,160,496; 6,493,450;

7,391,877

FAA-Approved: TSO C139a, C35d, C71

9800 Martel Road

Lenoir City, TN 37772

www.ps-engineering.com

PMA450A

Audio Selector Panel

Marker Beacon Receiver

Stereo Intercom System

USB-C Charging System

with Bluetooth® Connectivity

Pilot’s Guide

and

Operation Manual

202-450-0001 Rev.4 August 2017 Eff. S /N B45XXXXXX& Above

Flying never sounded so good ®

Page 2 202-450-0001 Rev. 4 PMA450A Pilot Guide

This section provides detailed operating instructions for the PS Engineering

PMA450A, Audio Selector Panel/Marker Beacon Receiver/Intercom Sys-

tems. Please read it carefully before using the equipment so that you can take

full advantage of its capabilities.

This Pilot Guide is divided into sections covering the basic operating areas

of the PMA450A systems. They are Communications Transceiver Selection,

Audio Selector, Intercom, Marker Beacon Receiver and special functions,

including IntelliAudio® and Bluetooth® functionality in the PMA450A.

PMA450A Operating Controls

Power Switch (1) (On/Off and EMG-Fail Safe Operation)

Unit power is turned on and off by pushing the volume knob (1). There is a

built in delay to prevent inadvertent shut off while adjusting the intercom

volume. In the  or "EMG" position, the pilot headset is connected direct-

ly to Com 1 as well as unswitched input #1. This allows communication ca-

pability regardless of unit condition. Any time power is removed or turned

, the audio selector will revert to fail-safe mode.

The power switch controls all audio selector panel functions, intercom and

marker beacon receiver. All transceiver and receiver selections will be re-

membered and return to the last state when turned on.

Menu Display (6)

The PMA450A uses a Organic Light Emit-

ting Display (OLED) and three line-select

buttons to access advanced functionality in

a very logical manner. Press the line select

key to select a specific item on each menu.

Items are toggled on and off by pressing the

line select key as well.

When navigating the menus, the screen will automatically return to this

“home” screen after a period of inactivity. This delay time is configurable for

202-450-0001 Page 3 August 2017 PMA450A Pilot Guide

between 1 and 30 seconds, on the initialization menu. A long press (>1 sec-

ond) will back-up one menu level.

A vertical bar next to a button, indi-

cates the button can perform a func-

tion on that menu.

A split bar indicates that a second-

ary function is available when that

button is held for more than 1 sec-

ond. On the home screen, this func-

tion is:

· Pilot Music on/off (lower button)

Communications Transmit (XMT) Selection (2)

The PMA450A has four buttons to select communications transceiver func-

tions, two each C1 and C2. C1 refers to VHF COM 1, and

C2, to VHF COM 2. To select a VHF COM for transmit;

push the lower button in the XMT (transmit) section. The

radio is automatically selected to receive incoming radio calls

when the XMT is selected. With a PMA450A, you will never

transmit on a radio that you are not receiving. To select a

VHF COM radio to listen only, push the C1 or C2 button in

the RCV (Receive) section.

Split Mode

In the SPLIT mode, the pilot position transmits and receives on COM 1, and

the copilot can transmit and receive on COM 2 independently.

Pressing the C1 and C2 XMT buttons together (above the └SPLIT┘ leg-

end), puts the PMA450A into SPLIT com mode.

 The intercom is deactivated automatically when you enter SPLIT

mode.

o Push the ICS button until the green LED lights

up CRW to restore intercom between pilot and

copilot.

o Intercom between crew and passengers is not

possible in split mode

The spatial component of IntelliAudio ® is defeated in

split mode.

To exit SPLIT mode, simply select C1 or C2 XMT but-

ton.

COM Audio Selector (3)

Communication audio from the other radio, not selected for transmit, can be

heard by pressing the associated RCV button. You will always hear the au-

dio from the selected transceiver.

Page 4 202-450-0001 Rev. 4 PMA450A Pilot Guide

Swap Mode (Switch from Com 1 to Com 2 remotely)

With Swap switch, the pilot can change from the current Com transceiver to

the other by pressing this optional button.

The Swap switch also serves as a remote intercom mode selector. By holding

the swap button for more than 1 second, the ICS mode will change from ISO

-ALL-CRW-ISO, etc. each time the button is pressed and held.

IntelliAudio® Dimensional Audio

Communication audio signals are digitally processed to “appear” in a differ-

ent location to the crew. IntelliAudio provides nine locations. This helps the

crew to better comprehend speech by locating it in a manner easier differen-

tiated by the human brain.

Intercom and other audio is not spatially processed, only the pilot and copilot

VHF COM audio. Stereo headphones, in stereo mode, are required

IntelliAudio: Auto

In AUTO mode, the IntelliAudio reverts

to single when one of the radios is quiet.

Separation will return as soon as both

radios are active.

Configuration

The spatially processed dimensional

sound in the PMA450A can be adjusted to accommodate the user prefer-

ences.

This adjustment allows the Spatial Audio inputs to be “relocated” on any of

nine (9) defined “Head Related Transfer Function” (HRTF) locations.

Push IntelliAudio → IntelliAudio Config to access. In the IntelliAudio®

mode, repeated pressing of the COM 1 or COM 2 line select buttons moves

the corresponding half-circle cursor to the locations relative to the listener

graphic in sequence.

Pressing the Done button exits the configuration setting mode. This setting

is recalled at system power up.

Com Monitor Mode

The PMA450A is equipped with a Monitor function, which allows a second-

ary com radio audio to be muted by the

primary radio (selected for transmit).

To toggle the Monitor mode on and off,

cycle the IntelliAudio button until MON-

ITOR appears.

202-450-0001 Page 5 August 2017 PMA450A Pilot Guide

Navaid Selection (4)

VHF Navigation receivers can be selected directly from the front

panel with the N1 and N2 (VHF Navigation receiver 1 and 2) but-

tons. The selected source is indicated by a green LED.

Additional navigation aid or other audio sources can be selected

using the LCD menus.

Press the lower line select RADIO → SWITCHED INPUTS, →

and desired audio source.

NOTE: Switched Inputs can be renamed at the configuration set up. See

page 13 for more information.

In SPLIT mode, only the pilot will

hear selected navigation audio.

Speaker Amplifier (7)

To activate the PMA450A cockpit

speaker output, press and hold the N2

button (SPR) for 1 second or until SPR appears in the display.

In “Split Mode” audio that the pilot hears will also be present in the speaker.

Unswitched audio #1 & #2, (the

inputs dedicated to autopilot discon-

nect, altimeter warning, etc.) will

come through the speaker regardless

of the speaker button position. Use

of a cell phone will mute the radio

audio over the speaker.

Depending on installation, important au-

dio annunciations such as radar altime- ter or autopilot disconnect

will come over the speaker even if it is not selected, while other unswitched,

but muted inputs, such as GPS alerts, will only be present if the SPR button

is selected. Consult your profession-

al avionics installer for these im-

portant configuration details.

Public Address Function

To access PA function, press and

hold the N1 button for more than 1

second, until the display adds PA.

When the pilot is speaking on the PA, all

intercom except for the Pilot will be disa-

bled for complete and uninterrupted an-

nouncements.

The pilot microphone will be heard on the

speaker and headsets when the pilot PTT

is used, and PUBLIC ADDRESS is dis-

played.

Page 6 202-450-0001 Rev. 4 PMA450A Pilot Guide

The copilot can continue to use the selected com radio while the pilot will be

heard over the speaker.

To exit PA mode, push and hold the N1 button again until PA is off or cycle

power on the audio panel.

Marker Beacon Operation (9) (050-450-0101, -0102 Only)

The Marker Beacon Receiver uses visual and audio indicators to alert you

when the aircraft passes over an ILS Marker Beacon transmitter.

The audio from the Marker Beacon Receiver can be heard by pushing the

"MKR" button. AUD will light up green.

The Blue lamp, labeled “O”, is the Outer Marker lamp and has an associated

400-Hertz 'dash' tone. The lamp and tone will be keyed at a rate of two

tones/flashes per second when the aircraft is in the range of the Outer Marker

Beacon.

The Amber lamp, labeled “M”, is the Middle

Marker lamp and is coupled with a 1300

Hertz tone. It is keyed alternately with short

'dot' and long 'dash' bursts at 95 combinations

per minute.

The White lamp, labeled “I”, is the Inner

marker and has a 3000 Hertz 'dot' tone. The lamp and tone will be keyed at a

rate of six times per second.

Holding the MKR button for 1 second activates marker test lamp, labeled "T/

M" and illuminates all three lamps simultaneously to assure the lamps

(internal and external) are in working order. Test mode does not activate

MM autopilot sense output. Releasing the button returns to the last sensitivi-

ty.

Pressing the marker mode select (“MKR”) for one second, while beacon

audio is active, will also cause the marker audio to mute for that beacon. The

next beacon received will re-activate the audio.

The marker beacon receiver audio volume can be adjusted from the menu.

Press RADIO → VOLUMES → MARKER, and turn the small knob to

adjust the marker beacon volume. The

green volume bar and numerical readout

will indicate the receiver volume in this

menu. NOTE: marker volume cannot be

turned completely off. Units without

marker receiver will not have a MKR

Volume menu.

Marker Beacon sensitivity is changed

from Low to High sensitivity by pressing and holding the MKR button for 2

seconds, or until “H” appears in the display, indicating High sensitivity is

activated.

202-450-0001 Page 7 August 2017 PMA450A Pilot Guide

Intercom Operation (8)

No adjustment of the IntelliVox®

squelch control is necessary. Through

individual signal processing, the am-

bient noise appearing in all six micro-

phones is constantly being sampled.

Non-voice signals are blocked. When

someone speaks, only their microphone circuit opens, placing their voice on

the intercom.

The system is designed to block continuous tones; therefore people humming

or whistling in monotone may be blocked after a few moments.

For consistent performance, any headset microphone must be placed within

¼-inch of your lips, preferably against them. (ref: RTCA/DO-214A, 1.3.1.1

(a)).

NOTE

It is also a good idea to keep the microphone out of a direct wind path. Mov-

ing your head through a vent air stream may cause the IntelliVox® to open

momentarily. This is normal.

The IntelliVox® is designed to work with normal aircraft cabin noise levels

(70 dB and above). It loves airplane noise! Therefore, it may not recognize

speech and clip syllables in a quiet cabin, such as in the hangar, or without

the engine running. This is normal.

For optimum microphone performance, PS Engineering recommends instal-

lation of a Microphone Muff Kit from Oregon Aero (1-800-888-6910). This

will not only optimize VOX performance, but will improve the overall clari-

ty of all your communications.

Intercom Volume Control (1)

The smaller 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, larger volume control knob controls intercom volume for the pas-

sengers. It has no effect on radio or music levels. (Music can be adjusted

independently from a dedicated music menu).

When the volume knobs are moved, the green

volume bar indicator will show the level of the

changing intercom volume.

Adjust the radios (at the radio itself) and inter-

com volume for a comfortable listening level.

Mono headsets in Stereo Installation

Not recommended, because the benefit of Intel-

liAudio® is lost. However, if desired, the

PMA450A can be installed monaurally by using the LEFT audio connections

only (left side contains Fail-Safe audio). Do NOT short left and right togeth-

er.

Page 8 202-450-0001 Rev. 4 PMA450A Pilot Guide

NOTE: Mono headsets that short the tip and ring (i.e. older models) will

introduce some audio distortion when used. Modern, stereo headsets are

recommended in all positions.

Intercom Modes (8)

The “ICS” pushbutton switch on the panel provides the selection of the three

intercom modes.

This button cycles through the intercom modes, from left to right, then right

to left as: ISO, ALL, CRW and CRW, ALL, ISO. A green indicator shows

which mode is currently active. This description of the intercom mode func-

tion is valid only when the unit is not in the "Split" mode. In the split mode,

the pilot and copilot intercom is controlled by the ICS button selecting

CRW.

ISO (Pilot Isolate): The pilot is isolated from the intercom

and connected only to the aircraft radio system. Pilot

will hear the aircraft radio reception (and sidetone dur-

ing radio transmissions). Copilot will hear passengers’

intercom , while passengers will hear copilot intercom.

Neither will hear aircraft radio receptions or pilot trans-

missions. The pilot can hear music if desired.

ALL: All parties will hear the aircraft radio and intercom.

Crew and passengers will hear selected Music. During any radio or in-

tercom communications, the music volume automatically decreases. The

music volume increases gradually back to the original level after com-

munications have been completed. The music muting can be activated

by radio only, radio and intercom, or nothing, for a Karaoke mode.

CRW (C): Pilot and copilot are connected on one intercom channel and

have exclusive access to the aircraft radios. They may also listen to Mu-

sic. Passengers can continue to communicate with themselves without

interrupting the crew and may listen to music as configured.

Alternate Intercom Mode

Alternate Intercom Mode allows intercom communications between crew

and passengers, without affecting the crew’s radio communications. The

passengers do not hear the aircraft ra-

dio audio, and passengers microphones

are blocked from the crew, while the

radio is active. Passengers can still talk

to each other.

To enable the Alternate Intercom

Mode, press RADIO-ICS→ Inter-

com: to switch between Standard,

Alternate modes and CP Pax modes. This state is remembered during pow-

er cycles.

202-450-0001 Page 9 August 2017 PMA450A Pilot Guide

Copilot as Passenger (CP Pax) Mode

This function is useful when the right seat occupant does not wish to interact

with the aircraft operation. When configured as “Copilot as Passenger,” the

intercom station wired as copilot will behave as a passenger only.

To enable the Copilot as PAX Mode, press RADIO-ICS→ Intercom: to

switch between Standard, Alternate CP Pax and CPAX ALT modes. This is

indicated by CPX on the display.

This state is not remembered during power cycles, unless “Recall ICS” is

activated in the setup.

The position will have intercom with

the pilot, except when there is radio

traffic, and never hear any radio au-

dio. The intercom microphone to the

pilot position will not be heard while

there is radio audio present. Copilot

seat becomes “front” and passenger

becomes “rear” for the Music distribu-

tion menu. In this configuration, CREW mode cannot be activated.

Music Control, Distribution and Muting

The top menu, middle line select button toggles the music on or off for the

pilot. When music is active, a music icon (♫) appears in the display.

The PMA450A has two independent music inputs at the rear connector. The

PMA450A also has the ability to receive streaming music from a Bluetooth-

enabled device.

The Music 1 Music 2 and Bluetooth inputs can be selectively delivered to

the pilot, copilot and/or passengers using the music distribution menu.

Press Music → Music Distribution→ and select desired combination.

NOTE:

All music devices should be turned off for takeoff, 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 operator 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.”

You can refer to Advisory Circular 91.21-1C for more information, at www.faa.gov.

Music Muting

The SoftMute™ circuit will mute the

music whenever there is conversa-

tion on the radio, the intercom, or

both, depending on the “Mute” mode

selected. When that conversation stops,

the music returns to the previous level

over a second or so.

The mute mode functions are con-

trolled through Music Mute Menu

Page 10 202-450-0001 Rev. 4 PMA450A Pilot Guide

which has three modes for music in-

puts, ALL, Mute Off & Radio mute.

 ALL – music will mute with

either intercom or radio

 Mute Off – music will not mute

except during outgoing radio

transmissions.

 Radio – Radio will mute music, but intercom will not mute music.

The PMA450A defaults to Mute A LL when turned on, unless Mute Recall

mode is enabled in setup.

In addition to the panel mute menu, a remote switch may be installed to al-

low the passengers local access to their Mute Off mode. When this switch is

grounded, the menu choice is overridden.

Music Volume

The volume of the three music inputs

can also be adjusted from the menu of

the PMA450A:

Press Music → Music Volume →

set desired music input. The LED

Volume bar and the numeric volume

will show the volume level.

Music in Pilot ISO mode

When the isolate (ISO) mode is acti-

vated, the music for the pilot is auto-

matically disabled. If desired, the pilot

can elect to hear Bluetooth, Music #1

or #2, in the ISO mode by toggling

the Music line select with a long press

or holding the ICS button, while in

the ISO mode.

Bluetooth® connection

The PMA450A has a Bluetooth interface. The audio panel is always

“discoverable,” so you just need to search for the PMA450A from your

Bluetooth-equipped phone or music source.

If the audio panel is turned on before the Bluetooth device, you will have to

either reconnect from your phone, or turn the audio panel off and back on to

connect.

When Bluetooth is active, a Bluetooth icon and the battery status of the de-

vice is displayed in the upper right corner of the home display.

Pairing and unpairing Bluetooth devices

The PMA450A can be paired with up to eight individual devices, and will

automatically reconnect with the first two it finds. When more than eight are

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