User`s guide

Serial Control – RS232 33
Serial Control – RS232
The unit may be controlled using serial RS-232 (9600 baud rate, 8 data bits, No
Parity , and 1 Stop bit -- 9600 8N1) messages via the 9-pin serial port located
on the back panel of the machine. The protocol is ASCII-based, and many
commands are similar on structure to Pioneer Disc protocol. Upper or lower
case characters can be used interchangeably in most cases. Please see the
General Command Summary section for a table of commands. Note this section
DOES require the <CR> carriage return listed in the protocol summary. Also,
note this is an upstream device, so you may need a NULL serial cable to
communicate with it from another upstream device like a PC or show controller.