Connection To A Pc; Connection To A Power Supply; Connection To An External Speaker - AOR ARD9900 Operating Manual

4. TX
Taking this pin to the ground will enable to transmit.
(Same operation as the TX switch on the front panel.)
5. D/A
Taking this pin to the ground will force the ARD9900 to the Digital voice
communication mode. When this pin is left open, the operation mode will
be set by the mode switch on the front panel.
6. PTT
PTT (Push To Talk) input.
7. MIC GND
Microphone ground signal
8. MIC IN
Microphone signal input

Connection to a PC

A PC interface cable is included with the ARD9900.
Parameter settings can be made by using terminal software.
(Refer to: Control Commands at page 27 for details.)

Connection to a Power Supply

To operate your ARD9900, use a regulated power supply.
The operating voltage must be in the range of 10.7 ~ 16.0 V DC (approximately
200mA).
A DC power cable is also included with the ARD9900.
Color
========================
RED
BLACK
If you have changed the internal jumper for low-voltage battery operation, supplied
voltage must be in the range of 5.6 ~ 6.5 VDC.
DO NOT apply 12.0 V or severe damage will result, and the warranty will be void!
(Note: There is no low battery voltage detector built-in to the ARD9900.)

Connection to an External Speaker

If an external speaker is desired, connect it to the SP OUT jack. This will also disable
the internal speaker.
Polarity
Positive (+)
Negative ( - )
12