T440 Users manual V021/B, © JED Microprocessors Pty Ltd Nov 17th 2008 Page 11
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
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 T440 “projector”
Connection
“Serial” Port Connector
Ground Ground 9-pin D-sub pin 5
Data from T440 to projector Tx 9-pin D-sub pin 2 (RXD)
Reply data from projector to T440 Rx 9-pin D-sub pin 3 (TXD)
Plus 9 volt CTS/DTR to projector N/c
8
1 2 3 4 5
6 7 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.
Mini-DIN 8
solder side
43 5
1 2
6 7 8
Mini-DIN 9
solder side
4 5 6
21
3
7 98
