This appendix provides detailed connector pinout information for the serial and audio ports available through the ASO board.
Table A-1 shows the pinouts for the ASO serial connectors. These 9-pin, D-sub serial connectors and signal pinouts are exactly the same as the DB-9 RS-232 connectors on existing Challenge, Onyx, POWER Challenge, POWER Onyx, and Reality Station systems. The ASO serial port is software selectable between RS-232 and RS-422 operation.
 | Caution: You cannot use the RS-422 cables from existing systems for operation on the ASO board ports. |
Table A-1. ASO Serial Connectors
Description | Pin | RS-232 Mode | RS-422 Mode |
|---|---|---|---|
9-pin D-sub receptacle. See Figure A-1. | 1 | NC | TX_H |
| 2 | TXD | TX_L |
| 3 | RXD | RX_L |
| 4 | RTS | RTS |
| 5 | CTS | CTS |
| 6 | NC | RX_H |
| 7 | GND | GND |
| 8 | DCD | DCD |
| 9 | DTR | DTR |
Table A-2. Audio Port Connectors
Connector | Tip | Ring | Sleeve |
|---|---|---|---|
Digital Input/Output | Out | In | GROUND |
Headphone Output/Line Output 2 | L | R | GROUND |
Line Output 1 | L | R | GROUND |
Line Input 1 | L | R | GROUND |
Microphone Input/Line Input 2 | L | R | GROUND |