Epson JED T440 RS232 connections to Mitsubishi projectors see also D9 following, Mini-DIN

RS232 connections to Mitsubishi projectors (see also D9 following)

These use an 8 or 9-pin mini-DIN male on the cable. Comms is at 9600 baud, 8 bits, no parity, and 1 stop.

Function/Direction	T440 “projector” Connection	“Serial” Port Connector
Ground	Ground	8 or 9-pin mini-DIN pin 4
Data from T440 to projector	Tx	8 or 9-pin mini-DIN pin 1	(RXD)
Reply data from projector to T440	Rx	8 or 9-pin mini-DIN pin 7	(TXD)
Plus 9 volt CTS/DTR to projector	N/C	N/C

NOTE: Mitsubishi use either an 8 or a 9-pin connector for RS232 (the 9-pin one has some USB lines, which are ignored in use with the T440). Mitsubishi in some cases supply an off-the-shelf mini-DIN 8 to DB9 and a mini-DIN 9 to DB9 cable called by them the “RS232C” cable.

After installation wiring of any projector to a T440, use a multimeter to check voltages of –9 on BOTH TX and RX pins in any installation, as described in the troubleshooting part of this manual.

RS232 connections to Mitsubishi projectors, D9

	1	2		1		2
3	4	5	3	4		5	6
6	7	8
				7	8		9
Mini-DIN 8			Mini-DIN 9
solder side			solder side

These use a 9-pin-D9 male on the proj, female on cable. Comms is at 9600 baud, 8 bits, no parity, and 1 stop.

Function/Direction

Ground

Data from T440 to projector Reply data from projector to T440 Plus 9 volt CTS/DTR to projector

T440 “projector” Connection

Ground

Tx

Rx

N/c

“Serial” Port Connector

9-pin D-sub pin 5

9-pin D-sub pin 2 (RXD)

9-pin D-sub pin 3 (TXD)

1 2 3 4 5

6 7 8 9

D-sub 9 female solder side

After installation wiring of any projector to a T440, use a multimeter to check voltages of –9 on BOTH TX and RX pins in any installation, as described in the troubleshooting part of this manual.

T440 Users manual V021/B, © JED Microprocessors Pty Ltd Nov 17th 2008 Page 11