Epson JED T440 user manual RS232 connections to NEC LCD with D9, Hdmi

NEC LCD: 3000/3210/4000/4010/4020/4610/4620/5220/5710/6520P/L, SC40/SC46,

NEC LCD: M40/M46 Old T1, Old T2, Multeos (new mode),

NEC Plasma: 42XC10/42XP10, 50XC10/50XP10, 60XC10/60XP10

In the back of each user’s manual is a list of typical channel selection messages, and manuals of NEC LCD panels are available at http://www.nec-display-solutions.co.uk/c/g/uk/en/Service/Home/index.html

Function code	NEC LCD 00_r/00_v	M40/46 Multeos	Comments
	and M40/46 (old codes)	(new codes)
Computer1	'00_r2' + 0D	'00600001'	Select RGB-PC
Computer2	'00_r3' + 0D	'00600002'	RGB/HV into BNC sockets
Computer3	'00_r1' + 0D	'00600003'	DVI digital
Video1	'00_v1' + 0D	'00600005'	Composite Video (also S-Video on some)
Video2	'00_v3' + 0D	'00600007'	S-Video
Video3	'00_v2' + 0D	'0060000C'	Component 1 Video YPbPr (RCA)
Video4	'00_h1' + 0D	'00600004'	HDMI
TV	n/a	'0060000A'	Digital TV

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, making S-Video the video default.)

•On panel connection blink codes supported;

•OPT7 handshake mode is not available;

•NEC 3000 … 6520, SC40/46 and M40/46 (old codes) ONLY support keyboard codes ”0” and “5”

•Audio control (Volume up/down keyboards, codes 2, 9, B, and E) and two-yellow button “Mute” command is ONLY supported in M40/M46 Multeos mode;

•Freeze is not supported at all;

•Turn off ECO mode of the panel to enable On/Off control; and

•TV control (keyboard code ‘E’) is only available for M40/M46 in Multeos mode. It uses absolute channel settings, so you MUST setup: Constant:A (Lower TV channel setting, “0” assumed if not set to value) and Constant:B (Upper TV channel setting, “10” assumed if not set to value.)

RS232 connections to NEC LCD with D9

These use a 9-pin-D9 male on the plasma, female on cable. Comms is at 9600 baud, 8 bits, Odd parity, 1 stop.

Function/Direction	T440 “projector”
	Connection
Ground	Ground
Data from T440 to projector	Tx
Reply data from projector to T440	Rx
Plus 9 volt CTS/DTR to projector	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)

N/C

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 13