2.
RS-232:
Connect 3.5mm D-Sub 9 pin adaptor cable to PC/Notebook for RS-232 control.
3.
USB IN:
Connect to a PC/MAC source for USB audio signal input or firmware update.
4.
Line IN:
Connect the L/R IN to an analog stereo input source such as CD player or media
player.
5.
Line OUT:
Connect the L/R OUT to amplifier or active speakers with RCA jack cables.
RS-232 Protocol
USB Audio Center
Remote Control
Pin
Assignment
Pin
Assignment
1
NC
1
NC
2
Tx
2
Rx
3
Rx
3
Tx
4
NC
►
4
NC
5
GND
◄
5
GND
6
NC
6
NC
7
NC
7
NC
8
NC
8
NC
9
NC
9
NC
Baud Rate: 19200 bps
Data bit: 8-bits
Parity: None
Stop Bit: 1
