PS Engineering PMA7000B Series Pilot's Manual And Operation Manual

PMA7000B--

Flying Never Sounded So Good!™

PMA7000B

Series

Series

Audio Selector Panel

Marker Beacon Receiver

and

Stereo Intercom System

Pilot’s Guide

Pilot’s Guide

And

And

Operation Manual

Operation Manual

Patent No. 5,903,277 & 6,160,496

FAA-Approved TSO C50c, C35d

JAA-Approved JTSO 2C35d, C50c

202-780-0001 Revision 1 May 2002

PMA7000B Pilot Guide

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1 OPERATION

MARKER MODE

RECEIVE AUDIO SELECTORS

GENERAL INFORMATION

1.1 SCOPE

This section provides detailed operating instructions for the PS Engineering
PMA7000B Audio Selector Panel/Intercom Systems. Please read it care­fully before using the equipment so that you can take full advantage of its
capabilities.

This chapter is divided into four sections covering the basic operating areas
of the PMA7000B systems. They are Audio Selector, Transceiver Selec­tion, Intercom, and Marker Beacon Receiver.

MARKER INDICATOR LAMPS

IINTERCOM MODE

PILOT & COPILOT VOLUME (INNER)
PASS VOLUME (OUTER)

1.2 Power Switch (EMG-Fail Safe Operation)

Unit power is turned on and off by pushing the volume knob. In the OFF or
"EMG" position, the pilot is connected directly to Com 1. This allows com­munication capability regardless of unit condition. Any time power is re­moved or turned OFF, the audio selector will be placed in the fail-safe mode.

The power switch also controls the audio selector panel functions, intercom,
and marker beacon receiver.

TRANSMIT SELECTORS

PMA7000B controls

2

CREW ICS
CD MUTE CONTROL

SPEAKER CONTROL

PMA7000B Pilot Guide

1.3 Microphone (XMT) Selection (All models)

There are six pushbuttons associated with the communications transceivers.
The lower buttons control which transceiver is selected for transmit.

The PMA7000B gives priority to the pilot’s PTT. If the copilot it transmit­ting, and the pilot presses his PTT, the pilot’s microphone will be heard
over the selected com transmitter.

The PMA7000B-Series has an automatic selector mode. Audio from the
selected transceiver is automatically heard in the headsets and speaker (if
selected). You can check this function by switching from COM 1 to COM 2
and watch the selected
audio light on the selec­tor change from COM 1
to COM 2. This ensures
the pilot will always hear
the audio from the trans­ceiver he is transmitting
on.

When switching from COM 1 to COM 2, while COM 2 audio had been se­lected, Com 1 audio will continue to be heard. This eliminates the pilot hav­ing to switch Com 1 audio back on, if desired.

When switching from COM 1 to COM 2 while Com 2 has NOT been se­lected, Com 1 audio will be switched off. In essence, switching the mic se­lector will not effect the selection of Com receiver audio.

When the duplex, or TELEPHONE mode is implemented, Com 3 becomes
the “TEL” position . This is the pilot’s “hook” switch, when the system is
interfaced to an appropriate approved telecommunication system, such as
the AirCell system. Selecting Com 3 places the pilot microphone and head­phones on the cellphone. The pilot PTT will switch the pilot mic to the
other selected com transceiver, and allow continued aircraft communica­tions as well.

The copilot will also be able to transmit with his PTT as well.
NOTE: Selecting COM 3 –TEL– mode will disable pilot and copilot inter-

com, as the intercom circuit is transferred to the telephone use.

RCV

XMT

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

With a yoke mounted, momentary switch, the pilot can change from the cur­rent Com transceiver (Com 1 or 2) to the other by depressing this switch.
To cancel "Swap Mode," the pilot may either press the yoke mounted
switch again, or select a different Com with the XMT buttons.

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1.4 Audio Selector (All models)

Receiver audio is selected through seven momentary, push-button, backlit
switches. You will always hear the audio from the transceiver that is se­lected for transmit.

The users can identify which receivers are selected by noting which of the
green switch LEDs are illuminated. Push buttons labeled Nav 1, Nav 2,
MKR (Marker), AUX (auxiliary), and SPR (Speaker) are "momentary type
switches. When one of these buttons is pressed, it's active, and the LED will
illuminate. Press the switch again and it be in the "off" position and remove
that receiver from the audio.

If the aircraft is equipped with a DME or ADF, these audio sources can be
selected with the AUX button.

1.4.1 Speaker Amplifier

The "SPR" in the push-button section stands for speaker. This switch will

place all selected audio on the cockpit speaker when this
switch is activated. NOTE: Except for the unswitched
audio, the speaker amplifier is not active in the "Split
Mode."

Unswitched audio, (autopilot disconnect, altimeter warn­ing, etc.) will come through the speaker regardless of the
speaker button position.

1.4.1.1 Public Address Function

To access PA function, an external switch must be installed, and activated.
This places the pilot microphone on the speaker output when the PTT is
pushed. The copilot can continue to use the selected com radio.

We recommend that the switch transfer the audio from the cockpit speaker
to a cabin speaker for public address. This will prevent feedback.

1.4.2 Key “Click”

The PMA7000B is equipped with a “click” function that provides an aural
feedback to the user in addition to the tactile button push. This sound can
be enabled or disabled by simultaneously holding the COM 1 and COM 2
buttons in for at least 5 seconds. Any person hearing the radios will also
hear the key click.

Allow at least 20 seconds between turning the key click on and off.

1.5 Split Mode

The split mode can be activated at any time by pressing the desired combi­nation of XMT buttons. For instance, to activate a Com 1/Com 2 split, press

PMA7000B Pilot Guide

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