PS Engineering
PMA7000M-S Series Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-070-0004
Page 3-8
Rev. 4, Oct.200-070-0006
Page 3-8
Operating as a continuous loop recorder, (first message received will be the last heard),
the recorder has one minute of recording time and up to 16 messages. With its own built
in VOX circuit, there are no buttons to press to start recording. The system automatically
begins to record the instant the radio becomes active. Only aircraft radio audio in pilots
headset is recorded and only the pilot will hear the playback audio.
3.9.1 Operation
Recording is automatic; there is no action required by the pilot. To play back the last re-
corded message, simply press the momentary switch associated with the IRS. Each addi-
tional press of the button will play the preceding recorded message.
3.9.1.1 Audio Messaging system (Option 1, Option 2, only)
When this option is installed, the PMS7000M-S contains six stored messages. An outside
annunciator, such as an Electronics International engine gage system triggers these mes-
sages. When there is an announcement, it will be repeated every two seconds until the re-
mote- mounted ACK button is pushed. This stops the played annunciation, until the next
announcement is required (the next falling edge).
3.9.1.2 Concurrent Messages
When a recorded message or audio annunciation is playing, the other audio source is mo-
mentarily inhibited. For instance, if an IRS message is being played, the audio annunciation
will not begin until the IRS message is finished. Conversely, the IRS recording cannot be
played as long as there is an aural alert being played. There is no recording made if playing
a recording or annuncuation.