PS Engineering PMA7000CD Pilot’s Guide - Manual (Page 4)

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4 PMA7000MS-Option CD Pilot Guide
1.3.1 Swap Mode (Switch from Com 1 to Com 2 re-
motely)
With a yoke mounted, momentary switch, the pilot can change from the cur-
rent Com transceiver (Com 1 or 2) to the other by pressing 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.
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 se-
lected 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,
the LED will illuminate
and the receiver source will
be activated. Press the
switch again, it is "off" 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 selected.
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 a switch or relay to transfer the audio from the cockpit
speaker to cabin speaker for public address. This will prevent feedback.
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9 PMA7000MS Option CD Pilot Guide
pilot and copilot). Pushing this button places the ICS in Karoake (or sing
along) mode, which inhibits the soft mute feature. This
allows the music to continue uninterrupted by intercom or
radio traffic when cockpit workload is appropriate. Push-
ing the button again will release the mute inhibit function.
The passenger music, source #2, can be placed in the
Karoake mode if a remote switch is installed in the air-
craft.
1.7 Telephone Mode
The Com 3 mode can serve as a full duplex interface for telephone systems
if the installation is correctly configured. When interfaced with an approved
airborne telecommunications system, the PMA7000MS-CD can serve as a
audio control and distribution center. Each position has a "hook switch."
The pilot's off-hook switch is the "Com 3" button on the audio panel, the
others are discrete switches mounted adjacent to the headset jacks. When
Com 3 is active in the duplex mode, the TX button will blink about twice as
fast as the normal transmit rate.
When the intercom is in ALL mode, the pilot can speak on the phone only
if the Com 3 is selected for transmit (Com 3 Xmt button activated). All
intercom positions will hear the telephone conversation. If any passenger
places his or her switch into the “off-hook” position all passengers will also
be heard on the phone. All hear selected audio. Com 1 audio is automati-
cally heard in the headsets. The pilot and copilot will have transmit capabil-
ity on the other selected transceiver Com 1 or 2, simply by using their re-
spective PTT switch.
In CREW mode, the pilot and copilot are may use the telephone, with their
respective hook switch (the pilot selects Com 3 on the Xmt selector). Any
passenger who places their switch into the off-hook position will also have
access to the phone, and all four passengers will hear the conversation.
In ISO intercom mode, when the PMA7000MS-CD is in the Com 3 mode,
the pilot position is in the "Phone Booth." Only the pilot will hear the tele-
phone, and only he will be heard. He will also have access to Com 1 or 2,
and will transmit on that radio using the PTT. All selected audio is pro-
vided. If any other passenger goes “off hook” they will hear the phone.
Note: Because the telephone uses an intercom circuit, all stations on
that circuit will lose intercom capability when the telephone is in use.
1.8 Compact Disc Operation
The two push buttons at the far right of the PMA7000MS-CD control the
compact disk operation. Inserting the disc into the remote player unit
(PCD7100-R, part number 11955) will automatically begin play.