Front panel serial port connector

This connector is an 8 pin mini-DIN connector, similar to the serial port connectors found on Macintosh computers. Unlike the Macintosh, however, it uses RS-232 levels (the Mac uses RS-422).

The pin-out is as follows:

No.	Name Function
1	RTS Request to send (output)
2	CTS Clear to send (input)
3	TXD Transmit data (output)
4	GND Ground
5	RXD Receive data (input)
6	(not used)
7	(not used)
8	(not used)
9	(not used)

Here is what the connector looks like, seen from the front, looking into the unit: A suitable cable to connect to a notebook PC is wired as follows: PC (9-way D female) Soundweb box (8-way mini-DIN)

Signal name	Pin number	Signal name	Pin number
GND	5	GND	4
TXD	3	RXD	5
RXD	2	TXD	3
RTS	7	CTS	2
CTS	8	RTS	1

Rear panel serial port connector

This connector is a male 9-way D; its pinout is identical to that used by a standard PC serial port, namely as follows:

No.	Name	Function
1	DCD	Data carrier detect (input)
2	RXD	Receive data (input)
3	TXD	Transmit data (output)
4	DTR	Data terminal ready (output)
5	GND	Ground
6	DSR	Dataset ready (input)
7	RTS	Request to send (output)
8	CTS	Clear to send (input)
9		(not used)

See: Serial Connections