T440 Users manual V021/B, © JED Microprocessors Pty Ltd Nov 17th 2008 Page 7
Hitachi projectors (Code 44 hex, single audio control, Code 45, “by channel” audio)
This family has a compact set of “BE EF” hex commands consistent across the models. Two code groups are provided:
Code 44 is used when there is an audio in for typically each RGB channel but one audio shared by all video inputs.
There is only one pair of commands for audio Inc/Dec and the level of all channels is controlled by this one pair of
commands. So if a level has been dropped for a RGB channel, the audio level is down for the Video input and needs to
be manually adjusted up. These are typically many older models (excluding 3-byte code: CP-X935 to X970.)
Also supported by code 44 are: 3M-MP8746/MP8747/MP8775, 3M-X45, 3M-X55, 3M-X75, 3M-X70, 3M-X80,
ELMO EDP-S10, VIEWSONIC PJ510/PJ853/PJ656/PJ552/PJ562/PJ750/PJ862/PJ1165/PJ1172/PJ1065, also
InfocusLP800 (Hitachi PJ-TX10 does have Code 44 audio.)
Code 45 is used when there are a number of audio inputs (2, 3 or 4) but these are
unallocated to a video channel. These must be manually allocated using the
projector menu system to suit the audio sources, cables and connectors on site, but
any audio input can typically be allocated to any video/RGB input. Audio channels
can be shared or a channel set to have no audio. A typical menu sequence is to go to:
Menu -> Advanced menu -> Audio -> Audio, which gives a table of (a variable number
of) channel names down the left column, audio inputs by number across the top, and a
matrix of buttons which allows one allocation button or an OFF button to be selected
per channel. Use the “down” button to select a channel, and the “left” or “right” buttons
to move the “dot” to select that channel’s audio. Move to the “quit” position to save and use the “left” to exit the menu.
Typical Code 45 models are: CP-X2, CP-X6, CP-X200, CP-X205, CP-X251, CP-X253, CP-X245, CP-X255, CP-X256,
CP-X260, CP-X265, CP-X268, CP-X300, , CP-X305, CP-X308, CP-X400, CP-X417, CP-X505, CP-X600, CP-X605,
CP-X608, ED-X10, ED-X12, ED-X15, ED-X22
VIEWSONIC PJ759/PJ758/PJ760, PJ1158, 3M-X64, 3M-X90
Following have no audio so can use either code: PJ-TX100, TX200, TX300
In the back of each user’s manual is a list of typical channel selection messages, and manuals of most Hitachi projectors
are available at: http://www.projectorcentral.com/Hitachi.htm or http://www.hitachi.com/products/personal/av.html
Channel codes are:
Computer1 := BE + EF + 03 + 06 + 00 + FE + D2 + 01 + 00 + 00 + 20 + 00 + 00; // Analog RGB 1 DB15
Computer2 := BE + EF + 03 + 06 + 00 + 3E + D0 + 01 + 00 + 00 + 20 + 04 + 00; // Analog RGB 2 DB15/ BNC
Computer3 := BE + EF + 03 + 06 + 00 + 0E + D2 + 01 + 00 + 00 + 20 + 03 + 00; // Digital/M1D/DVI/HDMI
Video1 := BE + EF + 03 + 06 + 00 + 6E + D3 + 01 + 00 + 00 + 20 + 01 + 00; // Composite Video RCA
Video2 := BE + EF + 03 + 06 + 00 + 9E + D3 + 01 + 00 + 00 + 20 + 02 + 00; // S-Video
Video3 := BE + EF + 03 + 06 + 00 + AE + D1 + 01 + 00 + 00 + 20 + 05 + 00; // Component RCA
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.)
• OPT7 handshake mode and power on panel connection blink codes available.
RS232 connections to Hitachi and 3M, InFocus and Elmo Hitachi-made projectors
These use either a D-sub 15 shrink jack pin connector, female on cable, or a DB9, female on cable. Coms at 19200 8N1:
Function/ Direction T440 “projector”
Connection
Hitachi “Control” Port
Connector 15-pin shrink
Hitachi “Control” Port
Connector, DB9 (some)
Ground Ground Pin 6, 7 and 10. (Use all) Pin 5
Data from T440 to projector Tx Pin 13 Pin 2
Reply data from proj. to T440 Rx Pin 14 Pin 3
Plus 9 volt CTS/DTR N/C N/C N/C
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. CTS is NOT needed.
