Epson JED T440 RS232 connections to 3-Pin DIN Optoma Group, Function code Group Comments

Optoma Group 1: DS309, DX609, EP721, EP723, EP727, EP728, EP752, EP761, EP763 (Code 0D hex)

Optoma Group 2: EP766, EP782/W (Code 0E hex)

(Optoma Group 3: See BenQ SP820 for EP771/772 projectors (Code 3B hex))

In the back of each “User’s Manual” is a list of channel selection messages.

See master Optoma manual/code list at: http://www.optoma.eu/support.aspx

Function code	Group 1	Group 2	Comments
Computer1	'~0039 5' + 0D	'~0012 5' + 0D		VGA1
Computer2	'~0039 6' + 0D	'~0012 6' + 0D	VGA2 (some only)
Computer3	'~0012 2' + 0D		DVI-D (some only)
Computer4	'~0012 3' + 0D	'~0012 1' + 0D	Group 1: DVI-A		Group 2: HDMI
Computer5		'~0012 11' + 0D			Group 2: Wireless
Video1	'~0039 10' + 0D	'~0012 5' + 0D	Composite Video
Video2	'~0039 9' + 0D	'~0012 9' + 0D	S-Video
Video3	'~0012 8'+ 0D		VGA1 Component
Video4	'~0012 3' + 0D	'~0012 13' + 0D	Group 1: DVI-A (some)		Group 2: VGA2 Component
Video5	'~0012 2' + 0D		DVI-D (some only)
Video6		'~0012 1' + 0D			Group 2: HDMI
Video7		'~0012 11' + 0D			Group 2: Wireless

Any one of these codes can be set into Constant:0/Constant:1 for computer codes and Constant:2/Constant:3 for video codes. (The default is to have Computer1 (above) as the “Computer” channel and Video1 as the “Video” channel. Setting OPT1 switch ON will swap Video1 and Video2 channels.)

This panel can be used with a number of keyboards:

•With a “Code 9” or “Code B” keyboard, with buttons selecting “Video” and ‘Computer”, with “Volume Up/Dn”;

•Freeze command is available, so “Code A” keyboard OK;

•Two-yellow button “Mute” command is supported;

•OPT7 handshake mode and power on panel connection blink codes available.

•The “Source Lock” option in the “Options” menu MUST be turned ON (to stop the projector searching for other channels when an input is dropped.)

RS232 connections to 3-Pin DIN Optoma Group 1

Mini-DIN 3 socket on projector. Coms at: 9600 DP8N1

Function/Direction	T440 “projector”	Optoma 3-pin Serial Port
	Connection	Connector
Ground	Ground	Mini-DIN 3 pin 3	(Gnd)
Data from T440 to projector	Tx	Mini-DIN 3 pin 2	(RXD)
Reply data from projector to T440	Rx	Mini-DIN 3 pin 1	(TXD)

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3

Mini-DIN 3 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 16