Epson JED T440 user manual Channel codes are Computer1 = 04FB + 0D

Taxan projector families: (Code 42 hex)

Taxan PS101S/121X, PD121X (made by Kaga)

Channel codes are:
Computer1	:= '04FB' + 0D	// Computer
Video1	:= '03FC' + 0D;	// Video

(This projector has an S-Video input but a code to select it does not seem to have been included in the code list.)

•OPT7 handshake mode and power on panel connection blink codes NOT available.

RS232 connections to (all) Plus projectors

Taxan projectors have a DB9 RS232 connector. We have not been able to determine whether it is a male or female on the cable or what the signal connections are. To determine what line is what, measure the voltage on pins 2 and 3. If a pin has -5 to -9 volts on it is an output from the projector and should be connected to the RX output on the T440. The other line into the projector should have a resistance to ground of about 5kohm. This is the data input and connects to the T440 TX output.

Note: There is confusion as to whether these models even have RS232 coms! Some manuals don’t even mention it!

Baud rate change

This family of projectors can be operated at 115,200 baud or 19,200 baud. As shipped from Kaga, communications is at

115,200 baud, and must be set using a PC to 19,200 for use with a T440. Switch to 19,200 as follows:

Connect to a PC via a straight-though serial cable and run HyperTerminal, setting it up to run at 115,200 baud, 8 bit data, 1 start, 1 stop, no parity, no hardware handshake (8N1). (Unless you have enabled “local echo”, you will not see the characters as you type them. You can enable echo by going to File->Properties->Settings->ASCIISetup and ticking Echo typed characters locally.) HyperTerminal is found under Accessories or Programs in the Windows system or can be downloaded from: http://www.hilgraeve.com/htpe/

Verify communications by typing #QU(CR)(LF) (The “QU” must be upper case. The CR and LF must follow. Send a CR with the ENTER key, and send the LF by holding down CTRL and pressing ENTER.) The projector should reply with its lamp hours in hex, eg #QUhhhh.

Now set it to 19,200 baud by sending a command #CL(CR)(LF) from a PC running HyperTerminal at 115,200 baud. (It will switch immediately, so the reply will be gibberish.)

Now terminate the HyperTerminal session at 115,200 baud and restart it at 19200 baud, (8N1, no handshake, local echo enabled). Type #QU(CR)(LF) and verify hours reply (QUhhhh) at 19,200 baud.

The baud rate is held in projector non-volatile memory, so the baud rate setting to 19,200 need be done only once. (These commands are in Release N of the manual).

T440 Users manual V021/B, © JED Microprocessors Pty Ltd Nov 17th 2008 Page 28