1. JED Microprocessors Pty Ltd
(New T440-BLM metallic keyboard)
Presenting the JED T440 low-cost
Projector Controller
Aug 12, 2009

2. Demonstrating the JED T440
T440 is a budget RS232 wired controller with status LEDs and a variety of keyboards;
LEDs flash during warm-up/cool-down lockout;
Communications status read by pressing OFF.

3. Choose your keyboard
Code 2
Code 0
These four are the initial release: there are now 9 in the family;
Four-key for simple ON plus volume, or ON with simple channel select;
Up to 8 keys, so can control screens, TV channels etc.
Code A
Code 9

4. Off key/LED: Quick system check
Code 0
The OFF LED shows in the “rest” state;
The OFF button can be pressed in the OFF state, and the T440 polls the projector. If the projector replies correctly, the OFF LED flashes once;
If NOT, it flashes three times.

5. ON key: System starts
Code 9
Pressing the ON key starts the projector, and the ON LED flashes during warm-up.
The last used channel LED also glows, showing where the system will start after warm-up (“Video” in photo.)
(An alternate channel can be chosen during warm-up, and this LED now glows.)

6. System running
Code 9
After warm-up is complete, the channel setting message is sent to the projector, as indicated by a lit channel LED. (At this time the channel LED flashes briefly.)
Pressing another channel key changes to a new channel, and this channel LED now pulses, and then glows.

7. Audio control: The yellow keys
Code 9
The yellow keys control the audio volume, either in the projector, or the external T461 audio controller (see later).
If BOTH yellow keys are pressed together, the audio and picture mutes. Pressing a yellow key, the ON key or the active channel key restores both picture and sound.

8. Combined On/Channel key systems
(Code 5 keyboard)
(Code B-L “landscape”)
(Code B-P “portrait”)
Note how three keys have combined ON and channel functions. Use these if there are two computer/VGA channels in an install.
An alternate channel can be chosen during warm-up, and this new LED now flashes during warm-up, and then remains lit after startup.

9. Double-function options on source keys by setting OPT4 switch ON
Four key, code 0
Six key, code 9
Six key, code A
Eight-key, Code E
These (above) normally give two main channels, Computer:1 and Video:1. With OPT4 set, each button can be pressed again to select secondary channels, i.e. Computer:2 (eg Laptop) and Video:2 (eg S-Video) (Note: After changing between Computer/Video, the system defaults to the primary source for that key.)
Four key, code 2
OPT4 gives toggle between two computer channels

10. Freeze-Mute keyboard
Code A keyboard
Note the 45 degree metal case, (available in white or black.)
When running, this option allows the user to freeze the display or mute the picture. (Assumes the audio is handled externally.)

11. At the end of the show: Just press OFF
Code 5
The red LED flashes for the length of the programmed cool-down period, and then goes into steady OFF state ready for the next cycle. (Warm-up and Cool-down time can be manually entered at setup.)

12. T440 back view: Switches Keyboard code switch (code A here)
Reset switch.
(Always press after changing any settings.)
Options SW2 SW3
Option switches 1 to 8 for special functions, e.g. select S-Video, auto pixel align, PIR/Timer start, double-hit mode, reply mode, T441/T461 audio, etc
Sw2 & 3 to set projector family code MUST be set at install time by tech.
(This unit set to 12 hex, i.e. NEC 9600 baud family. See part B of manual.)

13. T440 back view: Connections 1
9 to 20V power + striped wire plain wire
RS232 to projector
Ground TX command to projector RX reply from projector CTS (option) to projector

14. T440 back view: Connections 2
Ground FET contact closure for Relay system power control
+12V Rel1. Rel2. Ground Screen control relay out Rel1.= Screen Down Rel2.= Screen Up

15. T440 back view: Connections 3
Passive Infra-Red (PIR)
This sensor can reset an internal timer, so the projector keeps running while students are present, but it times out and turns off when everyone has gone home!
The PIR can also start a projector when people enter a show-room or gallery.
PIR input Ground

16. T440 back view: Connections 4
T441/T461 audio mixer / attenuator
Used if the projector:
Does not control audio;
Has not enough inputs; or
Has no audio output.
T441 2-channel audio system
RS232 to T441/T461/439 Ground TX command to T461 RX reply from T461 (This port is also used for re-programming.)
Four stereo lines in, one stereo line pair out to amp.
T461 4-ch. audio system

17. T440 back view: Connections 5
JED 439 USB switcher
Used to switch the USB ports from two computers in a classroom so that either can control an Electronic Whiteboard.
RS232 to JED439 Ground TX command to JED 439 RX reply from JED 439
The 439 switches USB Whiteboard control between a classroom PC and a teacher’s “guest” laptop, when the T440 selects Computer:1 or Computer:2. Control can be via RS232, via contacts or via auto-sensing of 5V on the line. It can disconnect control when Video is selected.

18. T440 back view: Connections 6
RF/swipe reader starts projector (OFF stops)
Ground Aux. In
Key switch input enables ON key (OFF stops)
LCD timer starts and stops projector (can still have manual ON/OFF)
These three devices connect to the “Aux In” connector allow a variety of remote control and security access of the T440 in classrooms, showrooms or galleries.

19. T440 back view: Connections 7
IR transmitter to non-RS232 projectors
IR bug connects to this socket to signal to Epson X5 etc via IR.
IR Tx
This bug is stuck onto projector IR window:
Cable shield (ground) Inner (LED drive)

20. T440 back view: Connections 8
Easy connection option: Plug in a CAT5 cable as the only connection from the T440 to the projector.
Then run power, RS232, PIR all down the one cable from a plug pack up with the projector. Or use the new T447 (below left) to connect it all together up the top, including a signal tester. (See the LEDs which flash with communications.)
CAT5
CAT5

21. Projector RS232/1 (or IR) video + audio control
JED T440 simple system block diagram #1: projector/no-audio control configuration
PIR detector
Power amp. + speakers
12v
Screen Up/Down
JED T440 OR
Powered speakers
Projector RS232/1 (or IR) video + audio control
(Audio can bypass projector and use just one channel, with manual control. Then can use a freeze/mute keyboard.)
12 volt plug pack
VGA 1
(VGA 2)
Blue: RS232 Black: VGA/Video Red: Audio Green: PIR/Screen
Comp./S-Video

22. Projector RS232/1 video + audio control
JED T440 plus 439 simple system block diagram #2: projector/no-audio & USB IWB control configuration
PIR detector
Power amp. + speakers
12v
439 USB switcher
USB
JED T440
A-B USB-in OR
RS232/2 control
Powered speakers
Projector RS232/1 video + audio control
USB-A
USB-A
USB-B
(Audio can bypass projector and use just one channel, with manual control. Then can use a freeze/mute keyboard.)
12 volt plug pack
VGA 1
439 USB switcher does A-B or OFF switching via RS232 from the second serial port to select which computer controls the EWB
(VGA 2)
Blue: RS232 Black: VGA/Video/USB Red: Audio Green: PIR/Screen
Comp./S-Video

23. JED T440 system block diagram #3: with T441 audio control configuration
PIR detector
Power amp. + speakers
12v OR
JED T440
RS232/2 T441 audio control
Powered speakers
Projector RS232/1 (or IR) video control
Audio
JED T441 audio mixer
(2 stereo or 2 mono + 1 stereo into mixer)
12 volt plug pack
VGA 1
(VGA 2)
Blue: RS232 Black: VGA/Video Red: Audio Green: PIR/Screen
Comp./S-Video

24. JED T440 full system block diagram #4: with T461 audio control configuration
PIR detector
Power amp. + speakers
Screen Up/Down
JED T461 audio mixer (4 stereo inputs to mixer)
12v OR
JED T440
RS232/2 T461 audio control
Powered speakers
Projector RS232/1 (or IR) video control
Timer, swipe start
Audio +
T465 microphone
amplifier-mixer
(option in path)
VGA 1
Blue: RS232 Black: VGA/Video Red: Audio Green: PIR/Screen/ Easyswitch contacts
(VGA 2)
Easyswitch 240V power control of system with ON
Comp./S-Video

25. How to choose a keyboard 1
Four key, code 0
Four key, code 5
Four key, code 2
Use this if only one channel with audio control is needed.
Choose from these two if no audio.
Four key, code 1 (IR only.) The source key rolls through available channels.
Eight-key TV controller, Code E This adds channel change for flat-panel TV displays, to control tuners.

26. How to choose a keyboard 2
Six key, code 9
Six key, code A
These two give two channels, with either audio volume control or freeze & mute if no audio (or external audio control.)
Six key landscape, code B-L
Six key portrait, code B-P
Six key portrait, code BLM metallic finish
These three give three channels, and have audio control

27. Software for the T440
The software for the T440 contains drivers for all covered projectors and flat panels, and the code set onto the two rotary switches selects a driver, with options for baud rate and minor code differences.
There are no specific models selected by number, as in the T460, rather many models are covered by each setting. Typical models are noted in the user’s manual and the “covered projector” lists by release.
One big advantage of the T440 is that you never have load each controller at install time from a lap-top or by capture from a hand-held IR remote … just set the switches.
As JED includes new drivers, these are made available to distributors, and an older T440 can be updated and a new driver then selected.
The cable plugs into the T440’s second serial port.

28. JED controllers T460 and T440
The T460 is our high-end model, with a text LCD display, showing channel names for up to eight channels. Lamp hours are displayed at start-up, and warm-up and cool-down times are counted down.
This unit can drive the T461 audio box, and a variety of mixers and
relays for external signal control. Swipe card readers, PIR and timer inputs are also provided.
The T464 network box allows remote monitoring from a tech centre.