PS Engineering PMA5000EX Manuale utente

202-550-0100 Page 1

Jan 2010 PMA5000EX Pilot Guide

Covered under one or more of the following Patent

No. 4,941,187, 5,903,227, 6,160,496, 6,493,450

9800 Martel Road

Lenoir City, TN 37772

www.ps-engineering.com

PMA5000EX

Audio Selector Panel

Stereo Intercom System

Flying Never Sounded So Good! ™

Pilot’s Guide

and

Operation Manual

202-550-0100 New Release January 2010

Page 2 202-550-0100 PMA5000EX Pilot Guide

This pilot guide provides detailed operating instructions for the PS

Engineering PMA5000EX, Audio Selector Panel/Intercom Systems.

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

take full advantage of its capabilities.

This publication covers the operating areas of the PMA5000EX sys-

tems. They are Com Transceiver Selection, Receiver Audio Selector,

Intercom, and use of the utility jack.

PMA5000EX controls

Power Switch (1) (Push OFF EMG-Fail Safe Operation)

The audio selector panel and intercom functions are turned on by

pressing the volume knob on the left side of the unit. The unit can be

left on, if you have an avionics master switch in the airplane.

When the unit is turned off, either by pressing the volume control, or

if the breaker is pulled removing power, the PMA5000EX is in Fail-

Safe mode. In this mode, the pilot’s headset is connected to COM 1

for transmit and receive, and connected to unswitched input #1 for

priority audio alerts. The fail safe audio will only be heard in the left

ear of a stereo headset.

Communications Transmit (XMT) Selection (2)

To select Com 1 or Com 2 for transmit, simply press the button on the

bottom row, next to the XMT legend. Both the bottom and top button

indicators will light, showing you that you can transmit and receive

202-550-0100 Page 3

Jan 2010 PMA5000EX Pilot Guide

on the selected radio. The PMA5000EX automatically selects the re-

ceiver, and will not allow you to transmit on a radio without being

able to hear the receive audio.

If you want to listen to the other radio, press the upper button, in the

RCV (receive) section.

If the Monitor function is activated, the audio from this radio will be

muted when the primary radio (selected for transmit) is receiving a

signal.

When you have a com selected for receive, it will stay selected until

you manually deselect it. For instance, if you set COM 1 for clearance

delivery, and COM 2 for Ground Control, transmit on COM 1 to get

clearance, but want to contact ground you can switch between trans-

mitters without having to re-select the receivers. In essence, switching

the mic selector will not override prior selection of COM receiver

audio

Unless the audio panel is in “split” mode, the PMA5000EX gives pri-

ority to the pilot’s radio Push-To-Talk (PTT). If the copilot it trans-

mitting and the pilot presses his Push-To-Talk (PTT), the pilot is then

heard over the radio.

In Telephone (§)mode, the pilot microphone and headphones are con-

nected to the cell phone, but you still hear the COM radios selected.

The pilot PTT will switch the pilot mic to the selected com trans-

ceiver, and allow continued aircraft communications to continue. (See

Page 4—Telephone—for more details)

The copilot will also be able to transmit on the

other selected radio with his PTT.

Split Mode

In the split mode, the pilot is on COM 1, while

the copilot is able to transmit and receive inde-

pendently on COM 2. Activating the split

mode is straightforward — push both the

COM 1 and COM 2 XMT (bottom) buttons at

the same time. All four indicators will come

on. Select one of the com XMT buttons to exit the split mode.

It is not possible to split the copilot on COM 1, and the pilot on COM

When the split mode is activated, the intercom between the pilot and

copilot is inhibited, although the passengers can still talk among

Page 4 202-550-0100 PMA5000EX Pilot Guide

themselves. The crew intercom can be reactivated if desired by press-

ing the “Mute” button.

Note: Split Mode does not turn off Nav, ADF, or Aux selected audio

to pilot. However, the copilot will only hear the selected com receiver

and unswitched inputs.

When you invoke the split mode, the intercom between the pilot and

copilot gets turned off to prevent confusion from multiple conversa-

tions. However, if conversation between pilot and copilot is desired,

push the Mute button to reactivate the intercom. Intercom between the

passengers is not affected.

Swap Mode (Switch between COM transmitters re-

motely)

The “swap” button allows you to switch between the COM transmit-

ters without having to reach up to the audio panel, and is a handy way

to switch to Ground Control when exiting the runway. This optional

switch is usually mounted on the control yoke or a convenient place

by the pilot position.

Audio Selector (4)

You select the four switched

navigation receivers (Nav 1,

NAV 2, AUX 1 and AUX 2) by

pressing the desired button, and

an indicator will show you

which are turned on. AUX 1

and AUX 2 can be any audio source that is desired at the time of in-

stallation, such as ADF, or even an audio alert signal you want to con-

trol. The DME input (if present) is also shared with AUX 2.

In SPLIT mode, only the pilot will hear selected navigation audio.

NOTE: Due to the nature of VHF communications signals, and the size

constraints in general aviation aircraft, it is probable that there will be

some bleed-over in the Split mode, particularly on adjacent frequencies.

PS Engineering makes no warranty about the suitability of Split Mode in

all aircraft conditions.

202-550-0100 Page 5

Jan 2010 PMA5000EX Pilot Guide

AUX Source Muting

AUX 1 and AUX 2 have a tem-

porary muting function. When

you select AUX 1 or AUX 2,

and want to silence that audio

source temporarily you can hold

the AUX 1 or 2 button for more

than one second, and the audio

be deselected for the next 60 seconds. It will then return to the “ON”

state. This is useful if you want to silence an audio advisory signal

temporarily, but don’t want to forget to switch it back on .

Telephone (§) (9)

The TEL mode serves as a full duplex interface and distribution for

telephone systems such as portable cellular phones

with earpiece jacks. When you press the Telephone

button, it connects the cell phone to the headsets,

like adding another person on the intercom loop.

This connects the telephone to the people on the

airplane as follows:

In ALL intercom mode, all crew and passengers will be heard on the

phone when they speak. Com and other selected radio audio is also

heard in the headsets. If the pilot or copilot pushes the radio PTT,

their mic will be transferred to the selected Com radio. The telephone

party will not hear ATC communications, and vice versa.

In CREW mode, only the pilot and copilot are connected to the tele-

phone. Passengers will not hear the telephone. The pilot and copilot

will also have transmit capability on the other selected transceiver.

In ISO intercom mode, when the PMA5000EX is in the TEL mode,

the pilot position is in the "Phone Booth." Only the pilot will hear or

be heard on the telephone. The pilot will also have access to Com 1 or

2, and will transmit on that radio using the PTT. All selected audio is

provided to the pilot.

Note: As shipped from PS Engineering, the PMA5000EX does not provide cellular telephone sidetone

(the user’s voice fed back to the headset). Some cell phones do not provide sidetone. However, tele-

phone sidetone can be enabled by pressing the holding the TEL button for more than three seconds.

Because the cell-phone uses an intercom circuit, all stations on that circuit will lose intercom capability

when the cell phone is in use, unless sidetone is present.

Page 6 202-550-0100 PMA5000EX Pilot Guide

Intercom Operation

IntelliVox® VOX-Squelch

IntelliVox® is PS Engineering’s proprietary intercom squelch control.

Through the use of digital signal processors, the each individual mi-

crophone input is monitored, and opens instantly when human speech

is detected. This results in seamless conversations aboard the airplane

for crew and passengers, without annoying syllable clipping or fa-

tigue-inducing noise.

No adjustment of the IntelliVox® squelch control is necessary. There

is no field adjustment. Since this system is designed to block continu-

ous tones, 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-

214, 1.3.1.1 (a)). It is important to have the microphone element par-

allel to your mouth, and not twisted inside the cover.

Headset

Manufacturer

Model Part Number

Bose Dynamic

Electret

M87

90010

90015

90020

David Clark H10-30

H10-20, H10-40

H10-13.4, 13X

H20-10X

90010

90015

Lightspeed All 90015

Peltor 7003

ANR Pro, 7000

90010

90015

Pilot 11-20, 11-90, 1776, DXL 90015

Sennheiser All 90015

Telex Airman 750, AIR4000

AIR3000, Echelon 100

90010

90015

Note: For optimum microphone performance, we recommend use

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

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

clarity of all your communications.

Oregon Aero MicMuff Part Numbers

202-550-0100 Page 7

Jan 2010 PMA5000EX Pilot Guide

It is also a good idea to keep the microphone out of a direct wind

path. Moving your head through a vent air stream may cause the In-

telliVox® to open momentarily. This is normal.

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

levels (70 dB and above). Therefore, it may not always recognize

speech and clip syllables in a quiet cabin, such as in the hangar, or

without the engine running. This is also normal.

Intercom Volume Control (7)

Turn the smaller volume knob clockwise to increase the

intercom level for the pilot and copilot to

the desired level. The volume knob does

not affect selected radio levels, music

input levels or passengers' intercom vol-

ume level.

Turn the larger knob to set the passen-

gers’ intercom volume to the desired

level.

Since many general aviation headsets have built-in

volume controls, volume also can be fine-tuned at

the individual headset.

Mono Headsets in Stereo Installation

The pilot and copilot positions work fine with either a stereo or a

mono headset. But, since all passenger headsets are connected to-

gether, if one person uses a mono headset, it will cause the other pas-

senger station to become monaural. It will not hurt the audio panel,

and it will return to stereo when the headset is removed.

Intercom Modes (8)

Pushing the “ICS” button cycles through the

three intercom modes, All, Crew (Crw), and

ISO.

In addition, when the audio panel is in the Split

Mode, the Mute button controls the crew inter-

com activation.

In All mode, everybody hears everything, including radios, intercom

and music. The crew will hear Music 1, and the passengers will hear

Music source 1 or 2, depending on the Alternate Distribution method

Page 8 202-550-0100 PMA5000EX Pilot Guide

selected. This music source will be muted, depending on the selected

music muting mode.

In the Crew mode, only the pilot and copilot positions hear the air-

craft radios, both the selected receivers and the unswitched audio

sources. They hear music #1. The passengers can talk to each other,

and do not hear the aircraft radios. They will hear Music #2.

In pilot Isolate mode (Iso), the pilot is all alone with the aircraft ra-

dios, and does not hear any intercom conversation. The copilot and

two passengers can speak to each other, and are not bothered by radio

traffic. They will hear Music 1.

You have the option of putting music into the pilot headset, by press-

ing the ICS mode button for more than one second, while already in

the ISO mode. The music in ISO mode is indicated by a slow blink of

the intercom mode indicator.

Utility Jack

The 2.5 millimeter (3/32”) jack on the front of the

PMA5000EX has three distinct functions:

• Cell phone input

• Music input

• Advisory audio input

Cellular phone

You can connect most cellular and satellite telephones to the utility

jack using a 2.5 mm to 2.5 mm adapter cable (PS Part Number 425-

006-7026). This will plug into the jack on your phone and into the

audio panel. Then, when you press the TEL button, the phone audio

will pass through the audio panel. The cell phone becomes like an-

other person on the intercom, so the ICS mode button controls who

hear the conversation. Some cell phones need special adapters and

cables. Since the market for these devices is so dynamic, we recom-

mend that you visit the support section at www.ps-engineering.com

for the latest information.

When the TEL mode is off, the

telephone ringer audio will be

heard if it is present on the tele-

phone’s output (ringer may be

muted by radio and intercom).

202-550-0100 Page 9

Jan 2010 PMA5000EX Pilot Guide

Audio Advisory In-

put

You can use the utility

jack as an input for your

portable traffic advisory

or terrain avoidance unit.

Unless you have music playing in Music 1 through the rear connector,

we recommend that you turn music muting off, with the “Mute” but-

ton, so this audio is not interrupted.

We’ve built some intelligence into the PMA5000EX, too. If you do

have music 1 playing, the PMA5000EX will then interpret the jack

input as a priority audio, and not mute it.

NOTE

The front jack is no substitute for the required installation of alerts

such as the GPS waypoint or autopilot tones. These still must be hard

wired into the back by your installer.

Music Input

When you plug an iPod or similar portable music device into the front

jack, it is treated as Music #1, and will be muted in accordance with

your control option. You can control the music volume from your

device, or, set it at the loudest setting, and then use the front panel

controls on the PMA5000EX to adjust the music.

Alternate Music Distribution

This mode allows you to configure your music to be either independ-

ent of the intercom mode, or to make Music 2 dependent on the inter-

com mode.

An external switch (or installation strap) must be installed to use the

Alternate Music Distribution mode. In the Alternate Distribution

mode, Music 2 will be active only when the intercom is in the CREW

mode, and only the passengers will hear it. This distribution is similar

to other brands of audio panels, and allows the passengers to have

their music source come on only when they are not hearing the crew.

When the music is independent (the standard distribution method),

Music 1 will always go to the pilot and copilot positions, and is never

heard by the passengers. Music 2 is always heard by the passengers,

and never by the pilot and copilot.

Crew

Page 10 202-550-0100 PMA5000EX Pilot Guide

This mode is useful if your passengers have a different interest in en-

tertainment or are watching a DVD, but do not want to be excluded

from the intercom conversations.

Music Muting

There is a separate SoftMute ® muting circuit for each music input

(#1 and #2).

The front panel "Mute" button has four modes, and only controls the

Mute function for music 1. Music 2 muting is controlled by an exter-

nal switch, and has two modes.

The SoftMute™ circuit will cut the music out whenever there is con-

versation on the radio, the intercom, or both, depending on the

“Mute” mode selected. When that conversation stops, the music re-

turns to the previous level comfortably, over a second or so.

The mute mode functions are controlled through sequential pushes of

the Mute button, and include LED indication of the mode selected.

MUTE ON — music will mute with ei-

ther intercom or radio – MUTE ON LED

is lit.

RADIO MUTE — Intercom will not

mute music, radio will mute music. RAD

LED indicator is on

INTERCOM MUTE — Radio will not mute music, intercom

will mute music - ICS LED is ON.

MUTE OFF — “Karaoke” mode - music will not mute except

during outgoing transmissions. - All Indicators off.

The passenger’s intercom also has a SoftMute™ circuit. If the

passengers hear the radio, or talk on the intercom, the music will

mute. If the audio panel is in CREW mode, then the radio recep-

tion will not affect the passenger music.

Music 1 Volume

In general, we recommend adjusting the entertainment volume at the

sources, and only using this as a master gain control. However, the

Music 1 volume can be adjusted from the front panel, if desired, by

pressing Music volume up, and music volume down buttons.

The music can be turned completely off, so if you are not hearing

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