T440 Simple Projector Controller user's manual version V124 (part A)
(Ed Schoell rev: Mar 27th 2017)
The T440 is a wired (RS232) remote controller for video
projectors and flat panels, allowing simple
On-Off control, channel/source selection and optionally, audio
level control or freeze/mute functions.
Ease of setup and installation has been an important design
criterion, and this has been achieved by providing a data-base
of pre-coded projector code families in all units, so all have
identical software (which is field up-dateable). At install time,
or whenever options (or projectors) are changed in a room, the
changes are made by selecting device families with the
"Program select" hex switches on the back of the unit.
The range of keyboards at the end of this manual is coded for
identification, and this code number is set on the "Kbd Select" hex switch.
A DIP switch allows installers to quickly select several extra options.
Several variables can be setup at install time, allowing for variable warm-up and cool-down times, timeout time for
automatic turnoff, and allocation of a wide range of computer or video channels to the front-panel keys.
Except for a major code upgrade for totally new devices, a laptop is never needed at install/setup time. There is ¼
Mbyte of memory in the unit for data-base storage. A boot loader is included in the CPU, located in upper memory, so
no special programming dongles are needed; it just needs a PC with a serial port (or a USB to serial adaptor.)
Operation of the T440
A number of coloured LEDs are associated with keys, and these are steady or flashed to signal to the user the current
state of the system. Pressing keys moves the operation through these various states.
There are two groups, or "styles" of keyboards:
• Separate ON and Channel keys: This has one Green, ON key and Blue, Channel keys (Video, Computer).
In rev 22, it is possible to toggle between two computer or two video channels with either key; and
• Combo On/Channel keys: This group has one or three Green keys which are marked with a Channel function as
well as "/ On".
Operation of the T440
Rear view and T440 connections
Setting up the T440 switches
Setting keyboard code
Selection switch for options
Selection of program/projector
Setting of T440 constants
Code 6 two-key kbd setup
Key masking with Constant:4
Screen control (relay) interfaces
USB Sw/Power ON relay interface 8
Timer/PIR in and closedown timer 9
Jed Micro Pty Ltd
5/173 Boronia Rd, Boronia, Victoria 3155 Australia
Phone: +61 3 9762 3588
www.jedmicro.com.au
Table of Contents
1
OPT3: AUX/PIR in for rem. On/Off 9
3
Serial 2 access to T440 setup info 10
4
Factory reset of constants
4
Readout of version number
4
OPT1: Swap Video:1 & Video:2
5
OPT5: Swap Comp:1 & Comp:2
5/6
OPT4: Set Comp1/2, Vid 1/2 video 11
7
OPT7: Detection of proj. shutdown 12
7
OPT8: T441/T461 audio control
8
OPT8: PTN DPA-22 audio cntrl. 12/13
Configuring the T440: Proj. codes 13
Configuring the T440:Relays/USB 13
T440 User's manual Part A, © JED Micro Pty Ltd 2015
email: jed@jedmicro.com.au
PTN WVGA2A VGA/audio/USB 14
Configurating User flags:Aspect 14/17
11
Setting default source channel
11
Master/Slave connections 2 x T440 19
11
Reprogramming of the CPU
11
Wiring the T440
Trouble-shooting the T440
Keyboard codes
12
Wiring diagram
17
21
23
23
25
26
Page 1
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