PS Engineering PMA450 Manuale utente

202-450-0000 Page 1Aug. 2014 PMA450 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

PMA450

Audio Selector Panel

Marker Beacon Receiver

Stereo Intercom System

USB Charging System

with Bluetooth® Connectivity

Pilot’s Guide

and

Operation Manual

202-450-0000 Revision 1

August 2014

Flying never sounded so good ®

Page 2 202-450-0000 PMA450 Pilot Guide Rev. 1

This section provides detailed operating instructions for the PS Engineering

PMA450, Audio Selector Panel/Marker Beacon Receiver/Intercom Systems.

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

advantage of its capabilities.

This section is divided into sections covering the basic operating areas of the

PMA450 systems. They are Communications Transceiver Selection, Audio

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

the Bluetooth® functionality in the PMA450.

PMA450 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 accidental shut off while adjusting the intercom vol-

ume in turbulent conditions. In the OFF or "EMG" position, the pilot headset

is connected directly to Com 1 as well as unswitched input #1. This allows

communication capability regardless of unit condition. Any time power is

removed or turned OFF, 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 Selection (6)

The PMA450 uses a Liquid Crys-

tal Display and three line-select

buttons to access advanced func-

tionality 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.

202-450-0000 Page 3Aug. 2014 PMA450 Pilot Guide

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

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

from the initialization menu as well, for between 1 and 30 seconds.

A vertical bar next to a button,

indicates the button can perform a

function on that menu.

Asplit bar indicates that a secon-

dary function is available when

that button is held for more than 2

seconds. These functions are:

Public Address (PA –middle button)

Speaker (SPR –lower button)

Communications Transmit (XMT) Selection (2)

The PMA450 has four buttons to select communica-

tions transceiver functions, 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 but-

ton in the XMT (transmit) section. The radio is auto-

matically selected to receive incoming radio calls

when the XMT is selected. With a PMA450, you

will never transmit on a radio that you are not receiv-

ing.

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

RCV (Receive) section.

The PMA450 will remember when you have selected a radio for receive

only, and then switch to it for transmit and switch back.

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┘ legend), puts the PMA450 into SPLIT

com mode.

The intercom is deactivated automatically when

you enter SPLIT mode.

oPush the ICS button until the green LED lights

up CRW to restore intercom between pilot and copilot.

oIntercom 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 button

Page 4 202-450-0000 PMA450 Pilot Guide Rev. 1

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.

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

With an optional yoke mounted, normally open momentary switch, the pilot

can change from the current Com transceiver to the other by pressing this

switch. To cancel "Swap Mode," either press the yoke mounted switch again,

or select a different Com with the XMT buttons.

IntelliAudio® Dimensional Audio

Various audio signals are presented to the DSP and processed to “appear” in

a different location to the crew.“Multi-Talker” (US Patent #7,391,877) speci-

fies up to nine locations. This helps the crew to better comprehend speech by

locating it in a manner easier differentiated by the human brain.

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

VHF COM audio.

The spatially processed dimensional sound in the PMA450 can be adjusted

to accommodate the user preferences.

This adjustment allows the Spatial

Audio inputs to be “relocated” on

any of nine (9) defined “Head Related Transfer Function” (HTRF) 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 PMA450 is equipped with a

Monitor function, which allows a

secondary com radio audio to be

muted by the primary radio (selected

for transmit).

To toggle the Monitor mode on and off, Press IntelliAudio → MONITOR

202-450-0000 Page 5Aug. 2014 PMA450 Pilot Guide

NOTE: Monitor Mode and Spatial Audio Processing (IntelliAudio) are mu-

tually exclusive –entering one mode will cancel the other.

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 top line select RADIO → SWITCHED INPUTS, → and

desired audio source.

NOTE: Switched Inputs can be re-

named at the configuration set up. See

§3.13 for more information.

In SPLIT mode, only the pilot will

hear selected navigation audio.

Speaker Amplifier (7)

To activate the PMA450 cockpit

speaker output, press and hold the

bottom line-select button (SPR)

for 2 seconds or until SPR ap-

pears 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 disconnect,

altimeter warning, etc.) will come through the speaker regardless of the

speaker button position.

Depending on installation, important audio annunciations such as radar al-

timeter 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 professional avi-

onics installer for these important configuration details.

Public Address Function

To access PA function, press and hold the center line select button for more

than 2 seconds, until the display

changes to PUBLIC ADDRESS.

When the pilot is speaking on

the PA, all microphones except

for the Pilot will be disabled for

Page 6 202-450-0000 PMA450 Pilot Guide Rev. 1

complete and uninterrupted announcements.

The pilot microphone will be heard on the speaker when the pilot PTT is

used.

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

middle line-select button again until

PUBLIC ADDRESS is off or cycle

power on the audio panel.

Marker Beacon Operation (9) (p/n 050-450-0100, only)

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

when the aircraft passes over a 75

MHz 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 two seconds 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 sensitiv-

ity.

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

202-450-0000 Page 7Aug. 2014 PMA450 Pilot Guide

will indicate the receiver volume in this menu. NOTE: marker volume can-

not be turned completely off. Units without marker receiver will not have a

MKR Volume menu.

Marker Beacon sensitivity is set using an external toggle switch, if desired.

The PMA450 defaults to low sensitivity, and will be in high sensitivity if the

switch is closed, connecting J2-Pin 30, to ground.

Intercom Operation (8)

No adjustment of the IntelliVox® squelch control is necessary. Through indi-

vidual signal processing, the ambient noise appearing in all six microphones

is constantly being sampled. Non-voice signals are blocked. When someone

speaks, only their microphone circuit opens, placing their voice on the inter-

com.

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 clar-

ity 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 passengers. It has no

effect on radio or music levels. When the vol-

ume 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.

Most general aviation headsets today have built-

Page 8 202-450-0000 PMA450 Pilot Guide Rev. 1

in volume controls; therefore, volume also can be adjusted additionally at

the individual headset.

Mono headsets in Stereo Installation

Not recommended, because the benefit of IntelliAudio is lost. However, if

desired, the PMA450 can be installed monaurally by using the LEFT audio

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

right together.

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. The description of the intercom mode function 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.

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 cur-

rently active.

ISO (Pilot Isolate): 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 trans-

missions). Copilot will hear passengers’ intercom and Music, while

passengers will hear copilot intercom and Music. Neither will hear air-

craft radio receptions or pilot transmissions. The pilot can hear music if

desired.

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

gers will hear selected Music. During any radio or intercom communi-

cations, the music volume automatically decreases. The music volume

increases gradually back to the original level after communications

have been completed. The music muting can be activated by radio only,

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

CRW (CREW): Pilot and copilot are connected on one intercom channel

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

Music. Passengers can continue to communicate with themselves with-

out interrupting the crew and may listen to music as configured.

Alternate Intercom Mode

The PMA450 includes an Alternate Intercom Mode. This mode allows in-

tercom communications between crew and passengers, without interrupting

202-450-0000 Page 9Aug. 2014 PMA450 Pilot Guide

the crew’s radio communications. The passengers do not hear the aircraft

radio audio. The passenger microphones are muted, such that the crew can-

not hear the passengers’ microphone audio while the radio is active. Passen-

gers can still talk to each other.

To enable the Alternate Intercom Mode, press RADIO → Intercom: to

toggle between Standard and Alternate

modes. This state is remembered during

power cycles.

Music Distribution and Music

Muting

The PMA450 has two independent music

inputs at the rear connector. The PMA450 also has the ability to receive

streaming music from a Bluetooth-enabled device which will be connected

as Music #1.

The Music 1 and Music 2 inputs can be

selectively delivered to the pilot, copilot

and/or passengers using the music distri-

bution menu. Streaming Bluetooth® Music is in paral-

lel with Music 1

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 communi-

cation system of the aircraft on which it is to be used.”

You can refer to Advisory Circular 91.21-1A for more information, at

www.faa.gov

Music Muting

The SoftMute™ circuit will mute the music whenever there is conversation

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

Page 10 202-450-0000 PMA450 Pilot Guide Rev. 1

second or so.

The mute mode functions are con-

trolled through Music Mute Menu

which has three modes for music in-

puts, ALL,Karaoke &Radio mute.

ALL- music will mute with either

intercom or radio

Karaoke mode - music will not mute except during outgoing radio

transmissions.

Radio Mute - Radio will mute music, but intercom will not mute mu-

sic.

The PMA450 always defaults to Mute ALL when turned on.

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

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

grounded, the menu choice is overridden.

Music Volume

The volume of the music inputs can also

be adjusted from the menu of the

PMA450:

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 activated, the music for the pilot is automati-

cally disabled. If desired, the pilot can elect to hear Music #1 or #2, in the

ISO mode by selecting through the menu screen.

The pilot can select either music source from the Music distribution menu.

Holding the ICS button, while in the ISO mode will restore the pilot’s music

selection.

Bluetooth® connection

The PMA450 has a Bluetooth interface.

The audio panel is always

“discoverable,” so you just need to

search for the PMA450 from your Blue-

tooth-equipped phone or music source.

The default access code is 0000.

When Bluetooth is active, a Bluetooth

icon and the battery status of the device is displayed in the upper right corner

of the home display.

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