RXC-3000 Hardware Installation and User Guide
9000-0000-040 Revision 10 25 of 46 Genave Electronics
PA Audio Port
Pinout And Characteristics Of External Amplifier Control Port (J11)
The amplifier control port “PA Port” is specifically designed to control an external amplifier for the
audio that comes out of the RXC-3000. The pinout of the connector is:
Pin 1 600 Ohm Audio 1 Pin 6 Amp Diagnostics Input
Pin 2 600 Ohm Audio 2 Pin 7 Ground
Pin 3 External Amp Power Up Pin 8 Not Used
Pin 4 External Amp Mute Pin 9 Ground
Pin 5 External Amp Enable Pin 10 Not Used
The control pins (Power up and Mute) are connected to the collectors of transistors that can handle
40VDC at 1 amp.
The Diagnostics pin is diode protected so that voltages above +5VDC are blocked from damaging the
RXC-3000. The diagnostic input serves to tell the RXC-3000 that the amplifier is working properly. A
low voltage on this pin indicates that the amplifier is ok. A high voltage on this pin indicates that the
amplifier either has a problem or is not connected.
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