JED T430 User Manual page 7

BenQ SP820, Optoma Group 5: EP771, EP772, EP774 projectors (Code 3B hex)
(Message formats are ASCII with format: "~PN<CR>" for Power On, "~SR<CR>" for RGB select, etc.)
Channel codes are:
Input1 := '~SR' + 0D;
Input2 := '~SD' + 0D;
Input3 := '~SV' + 0D;
Input4 := '~SH' + 0D;
* T440: OPT6 switch ON will use S-Video in place of HDMI/DVI. T430: Uses HDMI for Video2.
Input4 := '~SS' + 0D;
Input5 := '~SY' + 0D;
Input6 := '~SH' + 0D;
Input7 := '~SG' + 0D;
Input8 := '~SD' + 0D;
Input9 := '~SW' + 0D;
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. Setting OPT5 will
swap Computer1 and Computer2. Setting OPT4 will allow double- presses on some keyboards.).
OPT7 handshake mode and power on panel connection blink codes available;
•
You must turn off "Auto Source" in "Config" menu;
•
You must turn off "Auto Power Off" and 'Direct Power On" in "Config" menu.
•
Freeze and mute toggle only with the "Freeze/Mute" keyboard. No LEDs flash in the "Mute" state. No 2-yellow-
•
button mute is provided with a "Volume" keyboard as the limited projector codes cannot command absolutely or
read back the mute state;
RS232 connections to BenQ SP820, Optoma EP771/772 projector with D9
These use a 9-pin-D9 male on the proj, female on cable. Comms is at 9600 baud, 8 bits, no parity, 1 stop.
Function/Direction
Ground
Data from T440 to projector
Reply data from projector to T440
Plus 9 volt CTS/DTR to projector
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 User's manual V096B, © JED Microprocessors Pty Ltd Jan 20
//Computer1 RGB analog-RGB VGA
//Computer2 DVI
//Video1 Comp Video (OPT1 swaps Video1 & Video2)
//Video2 HDMI * (OPT1 swaps Video1 & Video2)
//Video2 S-Video *
// Component via DB15
// HDMI
// Computer2 RGB analog-RGB VGA
// Computer2 DVI for Vivitek use
// Wireless
T440 "projector" "Serial" Port Connector
Connection
Ground 9-pin D-sub pin 5
Tx 9-pin D-sub pin 3 (RXD)
Rx 9-pin D-sub pin 2 (TXD)
n/c n/c
1 2 3
6 7 8
D-sub 9 female
solder side
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