Instruction manual

Installation

Connection of the speaker-microphone

Connect the supplied speaker-microphone to the SP/MIC connector of the

ARD9000MK2.

If you wish to use your own microphone or a speaker-microphone, please refer to

the wiring diagram shown below.

Pin # Signal Details

1 Speaker output Speaker output

2 BIAS 5V DC though 2.2 Kohm

3 GND Chassis ground

4 NC No connection

5 NC No connection

6 MIC PTT PTT (Push To Talk) input

7 MIC GND Microphone ground

8 MIC IN Microphone signal input