PS Engineering PMA8000D Pilot’s Guide - Manual (Page 13)

202-890-0304 Page 13 Oct. 2014 PMA8000D Pilot Guide
To hear an earlier message, hold the COM RCV button until playback
stops again, and then press again to begin playing the next earlier mes-
sage. Repeat until you hear the message you wanted. Incoming new
messages will stop playback, and you can then restart.
A remote playback switch may also be installed.
Note: when you switch from one transmitter to another, the recordings
are lost. Playback is only heard by the crewmember from their audio
panel.
Blinking indicators
This chart shows you what the blinking LEDs mean.
COM 1 or COM 2 XMT Every 1 second Pilot or copilot is transmitting
COM 1 or COM 2 RCV Every 3 seconds Monitor mode activated
ISO mode in ICS Every 3 seconds Pilot has music in ISO
Mute and SPR buttons Every 1 second PA Mode active
What is blinking? How often? What it means