User's Manual

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PTT AUDIO - MPU3 AID
HARDWARE DETAILS
PIN DESCRIPTION
A Ground
B Audio Output (speaker)
C Audio Push-To-Talk
D Audio Input (microphone)
E RS-232 Wave Relay
®
Tx/Dev Rx
F RS-232 Wave Relay
®
Rx/Dev Tx
or
+5V Accessory Power (1 Amp Max)
NOTE
The PTT Audio connections on the MPU3
and the MPU4 are NOT wired identically.
CONNECTOR INFORMATION
•NATO U-283/U Standard Wiring for PTT
Devices
•IP67 Rated
WHAT TO CONNECT
WR-ACC-067, WR-ACC-079