PS Engineering PMA7000M-S Installation Manual User Manual
Page 20
PS Engineering
PMA7000M-S Series Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-070-0012
Page 3-1
Rev. 12, Sept.2000
Section III OPERATION
GENERAL INFORMATION
3.1 SCOPE
This section provides detailed operating instructions for the PS Engineering PMA7000M-S, and
PMA7000S Audio Selector Panel/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 four sections covering the basic operating areas of the PMA7000M-S systems.
They are Audio Selector, Transceiver Selection, Intercom, and Marker Beacon Receiver (7000M-S only).
HI
LO
T/M
ISO
ALL
CREW
V
O
L
PUSH
OFF/EMG
O
Com 1
Nav 1
Nav 2
Com 2
MKR
ADF
AUX
ICS
DME
SPR
Transmit
Swap
COM 3
COM 2
COM 1
COM 1/2
COM 2/1
TEL
R
Mic Selector
Intercom Vol.
Intercom Mode Sel.
Marker Indicator Lamps
Marker Mode Selector
Receive Audio Selectors
Swap Indicator
Speaker Switch
Crew ICS/
Music 1 Mute
TX Indicator
ENGINEERING
INCORPORATED
PMA7000M-S
M
I
Photo
Detector
Mounting
Screw
Figure 3-1 PMA7000M-S controls
3.2 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,
(PMA7000M-S only). Unless the mic selector is in Com 3 mode, at least one of the selected audio LEDs
will be on (Com 1 or Com 2).
3.3 Microphone Selector (All models)
When the mic selector switch is in the Com
1
position, both pilot and copilot will be connected to the Com l
transceiver. Only the person who presses their Push To Talk (PTT), will be heard over the aircraft radio.
Turning the rotary switch to the C
OM
2 position will place pilot and copilot on Com 2.
The PMA7000M-S 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.