Jed Micro Pty T440 User manual

T440 User’s manual Part A, © JED Micro Pty Ltd 2015 Page 1
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”.
Table of Contents
Operation of the T440 1
Rear view and T440 connections 3
Setting up the T440 switches 4
Setting keyboard code 4
Selection switch for options 4
Selection of program/projector 5
Setting of T440 constants 5/6
Code 6 two-key kbd setup 7
Key masking with Constant:4 7
Screen control (relay) interfaces 8
USB Sw/Power ON relay interface 8
Timer/PIR in and closedown timer 9
OPT3: AUX/PIR in for rem. On/Off 9
Serial 2 access to T440 setup info 10
Factory reset of constants 11
Readout of version number 11
OPT1: Swap Video:1 & Video:2 11
OPT5: Swap Comp:1 & Comp:2 11
OPT4: Set Comp1/2, Vid 1/2 video 11
OPT7: Detection of proj. shutdown 12
OPT8: T441/T461 audio control 12
OPT8: PTN DPA-22 audio cntrl. 12/13
Configuring the T440: Proj. codes 13
Configuring the T440:Relays/USB 13
PTN WVGA2A VGA/audio/USB 14
Configurating User flags:Aspect14/17
Setting default source channel 17
Master/Slave connections 2 x T440 19
Reprogramming of the CPU 21
Wiring the T440 23
Trouble-shooting the T440 23
Keyboard codes 25
Wiring diagram 26
Jed Micro Pty Ltd
5/173 Boronia Rd, Boronia, Victoria 3155 Australia
Phone: [phone]
www.jedmicro.com.au email: [e-mail]

T440 User’s manual Part A, © JED Micro Pty Ltd 2015 Page 2
Off state (Blink codes)
In the OFF state, the red LED by this key glows continuously. A built-in test function is provided, which can be
actuated by pressing the OFF key in this OFF state. This sends a test signal to the connected projector and blink codes
show:
•If the red LED flashes ONCE, it indicates that communications was established correctly, and the reply was as
expected;
•If the red LED flashes THREE times, it indicates a communications error, i.e. a disconnected or powered-off
projector, or a wrongly-set “Program select” switch on the back;
•If there is NO flash, it indicates that this particular projector normally has no response in the standby state, or an
example projector has not had timing measurements done yet, so polls aren’t tried;
•After none, one or three flashes, the red LED glows continuously.
T441/T461 communications test: A second communications test is done to the optional T441/T461 audio switcher-
attenuator. If this is selected (via the Option8 switch), connected and responding correctly, the green LED by the ON
button (above or to the left of the OFF key) blinks once. (There is no blink if no T441/T461 response is detected.)
Turnon
With “Separate On Key” keyboard: Pressing the ON key starts the T440 warm-up cycle. This will send the “start-up”
code to the projector.
The green LED by the ON button will flash once per second, for the pre-set warm-up time. As well, the last used
channel will be indicated by a green LED glowing steadily by one of the blue “Channel” keys, showing what channel
command will be sent to the projector at the end of the warm-up period.
Channel pre-select: Pressing one of the Video or Computer “Channel” keys will switch the preselection to a changed
channel. The green LED by that key will then glow, while the ON LED keeps flashing.
With “Combo On-key” keyboard: Pressing any one of the several green Channel/On keys starts the T440 warm-up
cycle. This will send the “start-up” code to the projector. The green LED for the selected channel will flash once per
second, for the pre-set warm-up time.
Channel pre-select: Pressing a different green Channel/On key during warm-up will switch the preselection to a
changed channel. The green LED by that key will then flash for the rest of the warm-up period.
Warm-up
The warm-up time is preset and varies from projector family to family. The time can be altered at setup time to suit
individual models in a manufacturer’s range over a range of 1 to 159 seconds. See the following section: “Constant
setting” for instructions on how to do this.
Screen down control and Power control ON
If screen control is enabled in the “Constant setting” process, when the/an ON key is pressed, the screen “down” driver,
Relay1 (RL1 on J10) is activated, either pulsed or direct drive. Depending on the drive mode set, if a turn-off for the
“screen down” function is needed and selected, it happens at the end of the set warm-up time. (By altering the set
“warm-up” time, the screen-down time can be altered. There is no separate down time setting for the screen down in the
T440.) See the following screen mode setting instructions.
Constant:D (see later, page 6) controls Relay 3, an N-channel FET output. By default, (Constant:D=0), Relay3 tracks
Computer2 (Used by the JED 439 switcher). If Constant:D =1, Relay 3 is actuated by the On key (and Off by the Off
key) … this can be used to turn on external audio equipment (powered speakers, etc) via an isolation relay, such as
Boolean Engineering’s “Easyswitch”. The two screw terminals on the Easyswitch connect to the RL3 and Gnd on the
T440, J11. See: http://www.booleanengineering.com/expeasy/ It can also be used for 12v triggers to screens or screen
casings. Connect the “+” of the screen to +12v and “–” to Relay 3.
Run mode
At the end of the warmup time, the selected channel LED will then flash for a short “lockout” period, and the chosen
“channel select” command is sent to the projector. If a “volume” key is included on the keyboard, and an absolute
volume mode is provided, a volume setting command is then sent to the projector (or T441/T461, if that is in use) as
well. This lockout period is variable, and is preset in the internal tables.
Pressing a different channel key will send the appropriate code to the projector, (and also an associated volume level, if
absolute volume mode is used). The selected channel green LED will then flash for the same “lockout” period as above.

T440 User’s manual Part A, © JED Micro Pty Ltd 2015 Page 3
Volume control (and two-key mute)
On a keyboard with Volume up/down keys, “volume up” and “volume down” messages are sent to the projector as keys
are pressed. (In some cases, two, three or more “Volume Increment/Decrement” messages are sent with each key press,
so that off to full volume takes typically 20 to 30 key presses, rather than 63 to 100 which might be needed to cover the
0-63 or 0-100 range sometimes used.) The volume keys also auto-increment/decrement if held down.
If the projector control is “absolute” (i.e. an absolute setting is sent) only one volume message is sent for each button
push (or pulse from the auto-inc/dec function), but the actual value sent could be incremented by a number larger than
one, again, to limit the range from 0-20 to 0-30. If a T441/T461 audio controller is used, its range is 0-20.
If absolute control is used (by projector or T441/461) the last volume used for a channel is remembered after the
projector is turned off, and restored at the next ON. As channels are changed, the volume is saved on exit and restored.
Two-key mute mode: If both volume keys are pressed together, “mute” mode is entered, and picture and sound mute
messages are sent to the projector (and T441/T461, if used), and the current channel LED commences a slow flash.
Normal picture and sound are restored by pressing the channel key (or the ON key). (Not all projectors allow this.)
Mute, Freeze and Aspect keys
When the MUTE key is pressed, the projector goes into picture mute mode, and the current channel LED commences a
slow flash. (No audio is assumed in a system with a Freeze/Mute keyboard). Pressing the MUTE key again, or the
current channel key, exits “mute” mode, and the channel LED returns to a continuous glow. (Some projectors don’t
have absolute modes for “mute” so pressing the key just toggles the projector mute mode without any blinking LED
display.)
When the “Freeze” key is pressed, the picture is frozen (if the feature is supported by the projector). Pressing it again
exits “freeze” mode.
Pressing the “Aspect” key toggles between 4:3 and 16:9 ratios, if absolute setting mode is available, else it rolls
between a number of ratios, whatever the sequence provided by the display device provides.
Closedown
When the OFF key is pressed, the following actions happen:
•The projector is sent the “Powerdown” message;
•If enabled, the screen-up Relay2 (RL2 on J10) actuates, either as a single pulse or a direct ON for the length of the
cooldown period, or till a pulse on RL1 stops the screen drive;
•The Power On Relay3 turns OFF; and
•The OFF red LED starts flashing once per second.
At the end of the Cooldown period, the system returns to the OFF state above. (The actual Cooldown period (and hence
screen-up time) can be programmed by a constant setup (see later).
Rear-view of the T440
Looking at the back of the T440 shows the connections
and the setup switches.
T440 Connections:
Across the bottom, right-to-left, are Phoenix plug-in
screw terminals for wiring to the outside world:
•Projector RS232 serial connection: same pinout as
the T460, with Ground, Tx (data out), Rx
(projector reply) and CTS (optional, infrequently
used);
•Auxiliary RS232 serial connection: used for
download and serial connections, e.g. to the
T441/T461 audio controller;
•At the far left is the power input, in the range of 9 to 25 volts. Current is under 50mA but depends on voltage;
•Optional: Relay drive out, intended for screen control. Optional: IR transmitter output: (Code 1 keyboard only);

T440 User’s manual Part A, © JED Micro Pty Ltd 2015 Page 4
At the top left is three-terminal connection J3, with two inputs, one for the PIR input the other is unallocated at the
moment. Next to it is connection J11 for Relay 3, a “power on”, USB switcher or aux screen/dipper relay drive.
Just below this input connector is a
CAT5 socket. This is a quick wiring
option for the communications
/power/PIR to the T467 “cable-top” box
which provides terminations to the
projector (DB9), power in socket, and
PIR screw terminals. (It is NOT an
Ethernet connection.)
T440 Switches:
•One hex switch (at the top-right)
selects the keyboard type by code;
•Two hex switches provide
“Program Select” to select an entry
in the data-base of projector/flat
panels. It needs a screwdriver to
select codes from 00 to FF;
•An 8-position “Option” switch,
allows installers to select options,
e.g. alternate video source, auto-
send of pixel align, T441/T461 use,
etc.;
•One push-button “Reset” switch.
Setting up the T440 switches
Selection of keyboard type
This is done using the “Kbd select” hex switch, and selecting the code of the keyboard style. This allocates the key
closures to T440 functions, and makes the T440 design extremely flexible in application. At the end of this manual is a
table of keyboard drawings and their codes. The code number below each keyboard is simply entered onto the switch by
setting the arrow on the switch to a code with a small screwdriver. Normally, this is pre-set at the time of manufacture,
and would not need to be altered in the field.
Selection of Options
An 8-switch options selection switch (SW4) is used to select install-time options.
NOTE: The OFF (default) position is with all sliders DOWN (by the switch numbers and green connectors).
Moving a switch to the ON position selects the option, as defined in this table:
Switch On Function Switch On Function
OPT1 Swap Video 1 and Video 2 sources, i.e. use
S-Video or HDMI as main “video” source.
OPT5 Swap Computer 1 and Computer 2
sources.
OPT2 Set automatic sending of Auto Pixel Align after
any Computer key selection.
(Time after Computer command is Constant:7)
OPT6 Use S-Video instead of HDMI where
available. (For some devices S-Video is
default, and OPT6 selects HDMI.)
OPT3 Off: allows pre-setting of channels, etc. prior to
use of Timer/Card Swipe/PIR auto/remote start
On: Lock out keyboard and use auto/remote ON
OPT7 Enable projector state sensing, and turn
T440 off if OFF or COOLDOWN sensed
OPT4 On: Enables toggle mode between, e.g. two
computer or two video channels when there are
no specific 1 or 2 keys.
OPT8 Use T441/T461 for audio switching &
control. (Also allows for setting DPA-22
amp.)

T440 User’s manual Part A, © JED Micro Pty Ltd 2015 Page 5
Selection of the program/projector
SW2 and SW3, the “Program select” switches shown in the T440 rear view, are normally used to select a family and/or
make of projector. These switches are read on Reset (pressing the “Reset” switch) or power on, and determine what
codes are sent to the projector as front panel keys are pressed.
(In this documentation, when a code “2A” for example, is quoted, it means the first hex digit, “2” is set onto the left-
hand switch, SW2, and the second hex digit, “A” is set onto the right-hand switch, SW3.)
Codes from 00 to DF are used for projector program selection: use the projector tables in the “Projector data” section of
this manual to choose a program code and set it into these two switches.
(Codes from E0 to FD are used for setting pre-set constants (such as warm-up time), code FE is used for a “Restore
factory pre-sets”, and FF is used as a test and diagnostic mode.)
Setting of constants in the T440
The T440 has built-in non-volatile memory (i.e. it maintains its contents even if power goes down).
This memory is used to save the series of constants (typically set or adjusted at T440 install time), for example:
•Altered Cooldown and Warmup and AutoPixelAlign delay times;
•Select a particular non-default channel (e.g. a Component or HDMI channel in place of the default Composite
Video);
•Set the timeout for the internal timer used to turn off the projector if everyone leaves the room; or
•Enable and set the mode of operation for the screen control relay outputs.
The constant setting process
To set a non-volatile constant, several steps are done in sequence:
1. Setup the DIP switch called “Options” to a value to be loaded into that constant;
2. Setup the “Program select” hex switches to address the constant. The constants are addressed by setting the
switches to a number in the range E0 to FD, allowing for 30 constants. The meaning of a particular constant
and its hex (switch) address is listed in the following tables; and
3. Press the push-button “Reset” switch.
If this is done properly, the green LED in the ON position will glow for 2 seconds and then turn off. No other
LEDs will be on, in this constant-setting mode, even after the 2-second blink. The 2-second blink indicates that
the constant was setup and saved correctly.
Setting a value into the Options switch
A decimal value in the range 0 to 159 can be set on the “Options Switch”. The switch is
divided into two groups of four switches.
ON is the position with the slider moved UP, and is shown in WHITE in these drawings.
The first (right) four (switches 5, 6, 7 and 8) are coded into the “units” part of the number as a
BCD setting from 0 to 9.
The second (left) four (switches 1, 2, 3, and 4) are coded into the “tens” part of the number,
extended to set a value from 0x to 15x. NOTE: This means value:11 is set by OPT4 and OPT8 both ON, (NOT hex
0B, OPT5,7 & 8).
ON
12345678
Value
0 0
ON
12345678
Value
0 1
ON
12345678
Value
0 2
ON
12345678
Value
0 5
ON
1 2 3 4 5 6 7 8
Value
0 9
ON
12345678
Value
2 5
ON
12345678
Value
3 7
ON
12345678
Value
9 9
ON
1 2 3 4 5 6 7 8
Value
159
ON
1 2 3 4 5 6 7 8
Value
1 0
ON
1 2 3 4 5 6 7 8
8 4 2 1
Units
8 4 2 1
0 0 0 0
Tens

T440 User’s manual Part A, © JED Micro Pty Ltd 2015 Page 6
Program select switch setup for constant setting
Constant
Program select
switch setting
Usage Range for
units
Comments
SW2 SW3
Constant:0 E 0 “Computer 1” key
message
1->20 Main, or “Computer 1” key
Constant:1 E 1 “Computer 2” key
message
1->20 Second, or “Computer 2” key
Constant:2 E 2 “Video 1” key
message
1->20 Main, or “Video 1” key
Constant:3 E 3 “Video 2” key
message
1->20 Second, or “Video 2” key
Constant:4 E 4 Disable keys Bits mask Comp 1 & 2, Video keys, val. = 1, 2, 4
Constant:5 E 5 Warmup time 1->159 seconds
Constant:6 E 6 Cooldown time 1->159 seconds
Constant:7 E 7 AutoPixelAlign
time delay
1->159 seconds (after Computer message), Defaults
to 30 sec. if value is 0
Constant:8 E 8 Closedown timer 0->15 hrs, 54 mins
in 6 min steps
“01” = 6mins, “45” is 4 h, 30 m.
Factory Default of “00” sets 30min.
Constant:9 E 9 Screen relay mode
setting
0, 1= one pulse, 2, 3= 2 pulses, 4= direct drive, 5= 1 relay.
Adding 10 sends commands to T462 via Ser2 (10, 11 … 15)
AS WELL. Adding 20 sends screen commands to T462
ONLY, allowing on-board relays to be used for switcher
control. Default is 1 pulse mode to suit ScreenTechnics.
Constant:A E A Lower TV channel
“0” assumed if not set to value
Constant:B E B Upper TV channel
“10” assumed if not set to value
Constant:C E C Enable/start/stop
mode setting for
key/timer/Aux or
PIR input.
See Page 9/10 for
detail.
(OPT3 switch OFF is normal, ON enables these functions.)
0= Aux-In close starts on last input (keyboard ON
disabled);
1= Aux-In close starts, PIR-In stops;
2= Aux-In close starts e.g. swipe card reader, pushbutton;
3= Aux-In enables ON button e.g. from key-switch;
4= Aux-In Starts & Stops, from an external timer contact;
5= PIR starts, closedown timer stops;
6= PIR starts, PIR extends On time, closedown timer stops.
7=Aux-In pulse starts, Aux-In stops from ext. push button.
Constant:D E D Control of Relay3
439 / Pwr. control
0= Relay3 tracks Computer2, 1= Relay3 On/Off on Power
up/down (e.g. to operate audio amp / casing / dipper)
Constant:E E E TV channel cmd. 0= Use DTUP/DTDW, 1=Use CHUP/CHDW
Constant:F E F Audio system &
switcher options
via SER2
00=T441/T461, 11...18=PTN DPA-22, 20=WVG2A
24: AVlink HRM-2214, 25: AV link MRM-701, 30/31:
Lightwave, 35: APart Concept1.
Constant:10 F 0 RS232 Relay 1 …
8 control via
second serial port
sending On/Off
commands to
T441/T461or
On/two relays selected by high/low nibble for Computer 1
Constant:11 F 1 On/two relays selected by high/low nibble for Computer 2
Constant:12 F 2 On/two relays selected by high/low nibble for Video 1
Constant:13 F 3 On/two relays selected by high/low nibble for Video 2

T440 User’s manual Part A, © JED Micro Pty Ltd 2015 Page 7
Constant
Program select
switch setting
Usage Range for
units
Comments
SW2 SW3
Constant:14 F 4 JED 439 USB
switcher
On/two relays selected by high/low nibble for TV
Constant:15 F 5 On-board Relays 1
… 3 selected by
numbers 1 … 3 in
low nibble of
constant. (Use IR
pin for screen
control or send to
T462. See $F9.)
On-board Relay selected for Computer 1 (for switcher)
Constant:16 F 6 On-board Relay selected for Computer 2 (for switcher)
Constant:17 F 7 On-board Relay selected for Video 1 (for switcher)
Constant:18 F 8 On-board Relay selected for Video 2 (for switcher)
Constant:19 F 9 On-board Relay selected for TV (for switcher)
(Constants 1A to 1C unallocated) Unused
Special notes for Code 6 option of T440
This option allows what is normally a T430 keyboard to be used on a T440 hardware board. This would only be done
when the T440 range is not suitable because no audio control is needed. This is done to allow:
1. The second serial interface on the T440 to send serial messages to external RS232 devises such as a 439 USB
switcher; and
2. Relays for screen control (Relays 1, 2) and hardware 439/ power (i.e. audio system) or dipper control via Relay 3.
When this option is used, the switches used for channel setting option on a T430 are allowed on a T440. This table, for
a KB1 keyboard (“On” and “Off” keys only) shows what options are selected by Option switches 1, 5 and 8:
Note: In the following tables, OPT2 (Auto Pixel Align) and OPT7 (reply mode) are NOT included in the settings:
Source (single) Option settings Source (single) Option settings
Computer 1 All OPTs Off Video 1 (Comp) All OPTs Off except OPT8: On
Computer 2 All OPTs Off except OPT5: On Video 2 (HDMI or
S-Video) See part B
manual for Video 2
allocation.)
All OPTs Off except OPT1: On,
and OPT8: On
The following table is for KB3 keyboards (“Off” and “On/Source”)
Note: In the following tables, OPT2 (Auto Pixel Align) and OPT7 (reply mode) are NOT included in the settings:
Sources (dual) Option settings Sources (dual) Option settings
Computer 1 &
Computer 2
All OPTs Off except OPT4: On Video 1 (Comp) &
Video 2 (S-Vid)
All OPTs Off except OPT4: On,
and OPT8: On
Computer 1 & Video 1
(Comp)
All OPTs Off except OPT4: On
and OPT6: On
Computer 1 &
Video 2 (S-Vid)
All OPTs Off except OPT1: On,
OPT4: On and OPT6: On
Computer 2 & Video 1
(Comp)
All OPTs Off except OPT4: On
OPT5: On and OPT6: On
Computer 2 &
Video 2 (S-Vid)
All OPTs Off except OPT1: On,
OPT4: On, OPT5: On and
OPT6: On
Note: When changing selection, you will have to press the RESET button to cause the system to read the
switches, and cycle the system between the choices (with the ON button) to make sure they are setup, and then
press the OFF button to save the selections.

T440 User’s manual Part A, © JED Micro Pty Ltd 2015 Page 8
Key masking using Constant:04
This option allows individual keys to be masked off if they are not needed in a particular install. (This might be if a
“portrait” T440 is needed, but not all three channels are needed.) Channels correspond to bits in Constant:04 as per the
following table. Setting a bit to “1” will disable that key. It is only available for keyboards with two or three channels:
single channel controllers don’t need it. One or two bits can be set at the same time: don’t set any more than ONE less
bit as there are channel select keys, as then the T440 will do nothing!
Bit settings:
Constant: 04
Keyboard availability Bit settings:
Constant: 04
Keyboard availability
No bits set. Value = 00 All keyboards operate as
normal
Bit 0&1 set.
Value = 03 Turn off
Comp 1&2 keys.
Code 5: Only Video avail.
Code B: Only Video avail
Bit 0 set.
Value = 01 Turn off
Computer 1 keys.
Code0: Only Video avail.
Code8: Only Laptop avail.
Code 9, A: Only Video avail.
Code E: Only Video and TV.
Bit 2 set:
Value = 04
Turn off Video key.
Code 1: Only Computer avail.
Code 5: Only Computer 1&2.
Code A: Only Computer avail.
Code B: Only Computer 1&2.
Code E: Only Computer and TV
Hardware interfaces of the T440
Screen control (relay) interfaces Relays 1 and 2 (also send to T462 relay box)
Four-pin screw terminal connector J10 is used to interface to screen control relays or control interfaces (like the
“Control” interface released by ScreenTechnics, or the Somfy ILT CD4 interface.) The interface provides:
•A Ground pin for connection to the common of a system like the CD4 or ScreenTechnics;
•A +12 volt pin to provide power for the top of isolation relays driven by the outputs;
•Relay 1, used for “screen-down” function, (or with “12v trigger” mode, down and up); and
•Relay 2, used for “screen-up” function.
The Relay 1 and 2 lines are driven by a 10 A, 60V N-channel power FETs, which provides a low resistance to ground
when turned on. These lines can connect to a CD4 or Screen-Technics controller, simulating a switch connection to
common ground. (Don’t use the 12 volt power connection with these two screen controllers.)
Screen relay mode setting
Constant:[9] holds a number, setting the screen control mode, shown in the following table. For timed drive, screen
down time is set by “Warm-up time”, set by Constant:[4]. Screen up time is set by “Cool-down time” settings, set by
Constant:[5].
If “10” is added to the constant, serial commands are sent to a JED T462 plugged into the second serial port as well.
(This was added because some screen control systems (e.g. Somfy IB+ 1 AC Motor Controller WM/PCB 100-240 V
AC) do not allow the common line to the grounded to the T440 common. The older Somfy CD4 did allow this.)
Constant:9 value Function Screen Down: ON key Screen Up: OFF key
0, 1/10,11 ScreenTechnics
mode (*not
ViewMaster Pro
Use IR LED)
Relay 1 pulse starts down when ON
key pressed.
Motor stops automatically with
internal limit switches
Relay 2 pulse starts up when OFF
key pressed.
Motor stops automatically with
internal limit switches
2/12 Somfy CD4
mode
Relay 1 pulse starts down,
Relay 2 pulse stops at end of
Warm-Up time set
Relay 2 pulse starts up,
Relay 1 pulse stops at end of Cool-
down time set
3/13 Somfy CD4 &
ILT mode
Relay 1 pulse starts down,
Relay 1 & 2 pulse together stops at
end of Warm-Up time set
Relay 2 pulse starts up,
Relay 1 & 2 pulse together stops at
end of Cool-down time set

T440 User’s manual Part A, © JED Micro Pty Ltd 2015 Page 9
Constant:9 value Function Screen Down: ON key Screen Up: OFF key
4/14 Direct drive
mode: 2-line
Relay 1 runs “Down” motor when
on for length of Warm-Up time set
Relay 2 runs “Up” motor when on
for length of Cool-down time set
5/15*
** See also “IR LED”
below for alt. drive
Direct drive
“12v Trigger”
mode: 1-line
Relay 1 runs “Down” motor until
limit switch stops. Relay stays On
Relay 1 OFF starts “Up” motor
until limit switch stops.
* This mode assumes an opto-isolated “Trigger” screen input. Connect “+” to +12v and “-“ to Relay 1 out, both on J10
**IR LED driver (also provides a Screen trigger +5 volt driver: eg for ViewMaster Pro)
Connector J2 is optionally a drive to an IR LED transmitter. See Epson X5/X6 for details of implementation. If not
used for IR, this output defaults to send +5 volts out (which can command Screen Down) when “On” is pressed, and
pressing Off commands screen Up.
If commanding a screen, use the “Trigger” input … this is usually called “12V trigger” but we have always found it
operates down to about 3 volts reliably, so 5 volts drive is OK. The “Trigger” input usually has two lines
(labelled + and -). Connect the “+” to the +IR out connection, and the “-“ to Ground alongside.
This does NOT need a “Constant:9” setting, and can be used with user choice of relay functions on the Relay connector.
(This output can also be used for power control, actuating an optical isolated power relay, or could operate a dipper or
screen casing when relays 1 and 2 are used for actual screen control.)
Relay3 (USB/VGA switch drive, power control relay or dipper control)
Connector J11 is for Relay 3, an N-channel FET output. This is used for control of ancillary equipment.
There are two functions allocated to this relay:
Default (Constant:D=0): Relay3 tracks “Computer2” selection. This is typically to drive a USB switch controlling
which computer drives the USB port of an Electronic White-Board (ELB), (and possibly a VGA and audio switch.)
JED has a USB switching device in design, the 439. Call for details.
Selected (Constant:D=1): When the ON key is pressed, Relay3, is actuated … this can be used to turn on external
audio equipment (powered speakers, etc) via an isolation relay, such as Boolean Engineering’s “Easyswitch”.
The drive to Relay3 is turned OFF when the OFF key is pressed.
The two screw terminals on the Easyswitch connect to the RL3 and Gnd on, J11.
See: http://www.booleanengineering.com/expeasy/
It is also possible to drive a normal magnetic or opto-isolated zero-crossing 240vAC relay from this output, by
connecting the positive end of the relay to the +12 volts connection on power input, connector J7.
Projector Dipper / Aux screen or casing control: This can drop and raise a ceiling projector dipper or a screen casing.
Note: If the dipper or casing needs two relays pulsed for Down and Up, use a JED T462 Opto to relay converter.
Closedown Timer and PIR (Passive Infra-Red) input for automatic turnoff
Connector J3 is used as two contact-close/open inputs.
A PIR infra-red “people-detector” senses whether all the class and presenter has left the building, leaving the video
equipment running.
The time-out is set as Constant:8. If left at the default of 0, the default time of 30 mins (setting of 05) is assumed.
This default was first introduced in rev 017. No timeout is actioned UNLESS J3 “PIR In” is grounded either via
a piece of wire or a PIR “normally-closed” relay contact.
The number placed into Constant:8 is a time-out count of 6-minute intervals, and a Constant:8 value of 10, for example,
is one hour. The maximum count is 159, i.e. 15 hours and 54 minutes. (9 x 6 mins= 54 mins)
This timeout is reset by any key operation, i.e. a channel change, a volume, mute or freeze setting, or even re-pressing
the current channel button or the ON key.
The timeout only operates when the input on the PIR pin is shorted to ground by the NORMALLY-CLOSED relay
output of the PIR detector. When the PIR senses a person in its sensor beam, the relay opens, and the PIR input pin is
pulled up by a resistor on the T440. This clears the counter in the same way a key-press does, and the counter restarts.

T440 User’s manual Part A, © JED Micro Pty Ltd 2015 Page 10
Test mode: Dialling FF (hex) on the code switches and pressing “Reset” enables a test mode where the red “OFF” LED
shows the PIR input state, and the Green LED above it (normally On or Video) follows the Aux input state. As you
walk around the room, the LED shows the area covered, and the mount angles can be adjusted to the normally occupied
area.
Note: This function can be used without the PIR, just as an OFF-timer. When the timer is about the close the
system down, the current channel LED and the OFF LED flash alternately for 30 seconds before closedown.
Pressing the current channel key will cancel the timer and restore operation for a further timer preset period. If
using without a PIR, the PIR screw terminal must be shorted to the Gnd screw terminal via a short piece of wire.
OPT3: AUX/PIR input for remote enable/start/stop mode setting for key/timer/PIR in
There is a number stored in Constant:C which is used to determine the mode for external control inputs into
Connector J3’s Aux input is for auxiliary inputs, e.g. a card swipe reader, key switch, a programmable timer or a simple
“Push-to-start” customer push button for system enabling or starting (and optionally, stopping) Constant:C also controls
use of the PIR input to Connector J3 to automatically start projector operation (and optionally continue it, if there are
repeated PIR pulses).
NOTE: These functions are only enabled when OPT3 switch is turned ON.
If this switch is turned OFF, the T440 ON keys(s) can be used, allowing easy setup of default channels and other
testing. Then turn OPT3 switch ON to engage these control functions (and disable the ON key(s)). After an Aux/PIR
initiated turn-on, the starting channel is the saved, (last used) one before turnoff.
The value set into Constant:C determines these remote enabling and control functions (only with OPT3 = ON):
•Constant:C = 00: (Default): Switch-ON mode, either a keyboard ON key or an external push button to AUX:
This modes allows an external contact closure wired into the J3:AUX terminal to operate exactly the same as
pressing the “ON” keyboard key. This could be a customer “Push-to-start-show” switch.
The projector turns OFF when either the OFF button is pressed or, if used, the PIR and the internal Closedown
timer (set at Constant:8) times out.
•Constant:C = 01: Switch-ON/OFF mode, either keyboard ON/OFF keys or external push buttons to AUX
and PIR: Same as 00 above, except OFF can be either keyboard OFF key or contact close on PIR input;
•Constant:C = 02: Switch-ON mode, no keyboard ON allowed (eg security card reader):
This modes allows an external contact closure wired into the J3:AUX terminal to operate exactly the same as
pressing the “ON” keyboard key. This could be a customer “Push-to-start-show” switch, a contact closure from a
RFID, a Swipe-card reader or a Dallas security key/button scanner or a key-operated switch (in the mode where
operating the switch momentarily “ON” starts the projector. (Input sources can be changed on the keyboard when
the projector is running.)
The key/switch input can be turned OFF and removed and the projector does NOT turn OFF immediately, in this
mode. The projector turns OFF when either the OFF button is pressed or, if used, the PIR and the internal
Closedown timer (set at Constant:8) times out;
•Constant:C = 03: Switch-Enable mode: This mode allows an external contact closure wired into the J3:AUX
terminal to ENABLE the “ON” keyboard button(s). (The J3:AUX contact can be turned OFF after the ON button(s)
press, (i.e. the external key can be turned OFF and removed) and the projector does NOT turn OFF immediately in
this mode.) The OFF LED blinks off momentarily every 5 seconds in this mode while disabled, and has no blinks
in the enabled state.
The key/switch input can be turned OFF and removed and the projector does NOT turn OFF immediately, in this
mode. The projector turns OFF when either the OFF button is pressed or, if used, the PIR and the internal
Closedown timer (set at Constant:8) times out;
•Constant:C = 04: Switch/Timer On/Off mode: This mode controls both the ON and the OFF from the J3:AUX
terminal. Typically this allows a remote switch (e.g. the output contact of a small LCD timer such as the JED
“460-Timer-12V” unit) or an external ON/OFF switch to control the whole ON and OFF operation, not just the
ON function. The PIR input and the internal Closedown timer does NOT operate in this mode.
The T440 keyboard is still operational (even with OPT3 ON), so pressing ON in the OFF-state will turn the
projector ON manually, and the OFF key will turn it OFF manually. If a programmed ON cycle occurs when it is
already ON, it remains ON, but will turn OFF automatically if the timer turns it OFF before it is manually turned
OFF. If the timer had turned it ON, the OFF key will turn it OFF, terminating a cycle. It will stay OFF until the

T440 User’s manual Part A, © JED Micro Pty Ltd 2015 Page 11
timer has cycled OFF, but will turn ON again at the next automatic timer ON event. (It can also be re-turned-ON
manually);
•Constant:C = 05: PIR start, Timer stop mode: This mode uses a contact OPENING on the J3:PIR in exactly the
same way as pressing the “ON” keyboard key, and the projector starts. The PIR contact is not tested again, and the
projector turns OFF when either the OFF button is pressed or the internal Closedown timer (set at Constant:8) times
out. (The ON key can also allow a manual start.)
The effect of this is that after a person is detected, the projector runs for a fixed time (i.e. Closedown time)
and the timer is not reset by PIR detections;
•Constant:C = 06: PIR start, PIR extend, Timer stop mode: This mode uses a contact OPENING on the J3:PIR
in exactly the same way as pressing the “ON” keyboard key, and the projector starts. The PIR contact IS tested
again, and the projector turns OFF when either the OFF button is pressed or the internal Closedown timer (set at
Constant:8) times out. The PIR input is tested, and it resets the timeout on a contact opening. (The ON key can also
allow a manual start.)
The effect of this is that the PIR can turn on a projector and keep it on continuously (i.e. time is extended)
while people are being detected, then the Closedown timer closes it down when no more interrupts are
detected.
•Constant:C = 07: AUX-In pulse start, AUX-In pulse stop: This mode uses a momentary contact closing on the
J3:AUX-in exactly the same way as pressing the “ON” keyboard key, and the projector starts. The J3:AUX-in
contact is tested continuously, and the projector turns OFF when J3:AUX-in contact closes again momentarily.
(The ON button and the OFF button can also allow a manual start and stop.)
The effect of this is that one pushbutton on a wall or panel can turn the system ON when pressed once, and
OFF again when it is pressed again.
Software aspects of the T440
Serial port 2 access to T440 setting information
If a T440 installer wishes to check the program version, examine switch settings and meanings, Constant settings,
keyboard settings etc., a test/debug mode can be entered. To do this:
•Connect a T440/460 “reprogramming” cable from the “Second” T440 serial port, (i.e. a Phoenix to DB9 cable) to a
PC serial port (or USB to RS232 cable);
•Load and run a terminal emulation program such as Docklight (JED’s favourite), “Bray Terminal” or
Hyperterminal;
•Set a baud rate of 38400 8N1 and connect on-line;
•Set the “Program select” switch to FF hex; and
•Push the “Reset” switch.
The terminal display looks like:
Hello World from JED T440V103P  Note version number
This build at: 1640 on: 24/06/2015
Hardware design and software (c) JED Microprocessors 2008 to 2015
To exit, select a non-FF switch setting and reset using reset switch
LEDs flash for LED test at this point
Non-volatile flags: D0 = 00000000b<CR><LF>
Non-volatile flags: D1 = 00000000b<CR><LF>
Non-volatile flags: D2 = 00000000b<CR><LF>
etc
Non-volatile constant: E0 = 00h
Non-volatile constant: E1 = 00h
Non-volatile constant: E2 = 00h
etc to
Non-volatile constant: FC = 00h
Non-volatile constant: FD = 00h
Option switches: 00h, 0

T440 User’s manual Part A, © JED Micro Pty Ltd 2015 Page 12
Program select: FFh Test mode
Keyboard type: 09h KB6:Computer, KB1:Video, KB2:VolUp, KB3:VolDn, KB4:Off,
KB7:On
Rotating the program select switches will show the loaded projector selections by the Program Switch hex settings.
PIR and Aux Test mode: FF (hex) on the code switches enables a test mode where the red “OFF” LED shows the PIR
input state, and the Green LED above it (normally On or Video) follows the Aux input state. As you walk around the
room, the LED shows the area covered, and the mount angles can be adjusted to the normally occupied area.
Factory Reset of constants
If a system needs to have all constants reset to 00 (i.e. the default settings):
•Set the “Program select” switch to FE hex;
•Turn on all Option-switches; and
•Push the “Reset” switch.
The green LED alongside the ON Key glows for 5seconds. You will then need to reset the Option and SW2/3 switches.
NOTE: Because all the flags are reset by this operation, the “Flag F” (addressed at “DF), which determines the
choice between “Projector” and “Flat Panel” control, is reset to “00”, the value selection “Projector”. This must
be set to “01” if the controller needs to run a flat panel.
Readout of Software Version Number
(The version number display changed after rev V100 to allow for a three-digit version number display. Three digits are
now displayed as a Green-Red-Green sequence for Hundreds-Tens-Units of the version no, and a “zero” in the number
is shown as a very brief “blip” (2-milliseconds), whereas a digit is ½ a second with a ½ second gap.)
•Set the “Program select” switch to FE hex;
•Turn off all Option-switches; and
•Push the “Reset” switch.
A green LED flashes for the Hundreds of the version number, then the Red Off LED flashes for the Tens, then a Green
flashes again for the UNITs of the version number. Flashes are 1 second apart.
The green LED also shows whether the loaded software is for a projector or a flat panel. If the green LED flashes on for
5 seconds after the three flash periods above, it is a flat panel setting, if NO green for 5 seconds, it is a projector setting.
You will then need to reset the Option and SW2/3 switches (and press RESET again).
OPT1: Swap Video:1 and Video:2 sources
If Option Sw1 is ON, Video:2 (normally S-Video) is used as the primary “Video” source”, and vice versa.
OPT5: Swap Computer:1 and Computer:2 sources
If Option Sw5 is ON, Computer:2 (normally RGB-2) is used as the primary “Computer” source”, and vice versa.
OPT4: Selection of toggle-mode for Computer & Video keys
If Option Sw4 is ON, then repeat pressing of the “Computer” keys toggles between Computer 1 and 2 and repeat
pressing of the “Video” key toggles between Video 1 and 2 (usually Composite Video and S-Video channels). When
switching to a Computer or Video channel from the other, the Computer 1 and Video 1 are selected as defaults, and so
the way to get to the secondary channels is by pressing the Computer or Video keys again after the green LEDs have
stopped flashing. Watch the label on the projected image to see the selected channel.
Note: On Code 9 or A keyboards, if one needs two computer channels but only one video, set both Video constants to
the same setting. Setting OPT1 switch ON will swap Composite Video and S-Video, so S-Video becomes the default.)
OPT7: Detection of projector shutdown
If Option Sw7 is ON, then the projector will be polled by the T440 every 5 seconds for its run state. If the projector has
been turned OFF (either manually via the projector-top buttons, the projector IR remote or because of a timeout with no
signal, etc) the T440 will detect this and will also follow state to show the OFF LED glowing. To test this, select SW7
on, do a “reset” via the reset switch and then run the system. Then disconnect the projector, and the system should close

T440 User’s manual Part A, © JED Micro Pty Ltd 2015 Page 13
down after three failed polls (15-20 seconds). OPT7 reply mode only starts after the system has been ON for 6 minutes,
to allow for slow warmup or projectors that have fast turnoff, but then delay turnon.
OPT8: JED T441 or T461 audio control (Needs Constant:$F= 00 (default)
The T440 software supports the use of the T441/T461 to give absolute control of audio switching and level. These are
used if Option Switch 8 is ON. When connected, and the OFF key pressed, the green ON LED flashes momentarily.
(See the separate T441 manual for details using the T441.) The T441/T61 is driven from the T440 second serial port.
For the 4-channel T461, the channel allocations are:
•Channels “Computer:1” and “Computer:2” use T461 channels 1 and 2; and
•Channels “Video:1” and “Video:2” use T461 channels 3 and 4.
If a two-stereo-channel T441 is used, switches on its end panel allow it to be used in several configurations:
•As two stereo channels, allocated as one for Computer:1 and one for Video:1;
•As two stereo channels, allocated as one for Computer:1 and one for Computer:2;
•As 4 mono channels, one for each of Computer:1 & 2 and one for each of Video:1 & 2; and
•As a split mode system, with a mono channel each for Computer 1 and 2, and a stereo channel for Video 1.
(See below for relay setups via T461/T462). Coms is at 38400 baud
When Off is pressed in the OFF state, as well as the Red OFF LED blinks showing projector communications OK, the
Green LED above it (On) will blink briefly showing T441/T461audio controller comms OK.
OPT8: PTN DPA-22 audio control (Needs Constant:$F= 11 … 18)
This amplifier/attenuator/switcher can be controlled via the second T440 serial port under control of the number loaded
into Constant $F.
Communications is at 9600, and a simple three wire cross connection is all that is needed (Tx, Rx, Ground.)
(A microphone channel is also available, which can be level set using the keyboard/LEDs on the DPA-22 lid.)
There are eight channel allocations available for the two channels selectable on this device: they are setup using the
1/2/3/4 units digit of the Constant:$F.
Because the two audio connectors of the DPA-22 are different (Input 1 is 2 x RCA, and Input 2 is 3.5mm jack), it is
sometimes more convenient to swap the sources because of cabling convenience. This is done by selecting group
15/16/17/18 rather than 11/12/13/14.
Constant:$F=11 Computer:1 selects DPA-22 Input1, Computer:2 selects DPA-22 Input2, no audio on Video:1 or 2
Constant:$F=12 Computer:1 selects DPA-22 Input1, Video:1 selects DPA-22 Input2, no audio on Computer:2 or
Video:2
Constant:$F=13 Computer:1or 2 selects DPA-22 Input1, Video:1 or 2 selects DPA-22 Input2
Constant:$F=14 Video:1 selects DPA-22 Input1, Video:2 selects DPA-22 Input2, no audio on Computer:1 or 2
Constant:$F=15 Computer:1 selects DPA-22 Input2, Computer:2 selects DPA-22 Input1, no audio on Video:1 or 2
Constant:$F=16 Computer:1 selects DPA-22 Input2, Video:1 selects DPA-22 Input1, no audio on Computer:2 or
Video:2
Constant:$F=17 Computer:1or 2 selects DPA-22 Input2, Video:1 or 2 selects DPA-22 Input1
Constant:$F=18 Video:1 selects DPA-22 Input2, Video:2 selects DPA-22 Input1, no audio on Computer:1 or 2
When Off is pressed in the OFF state, as well as the Red OFF LED blinks showing projector communications OK, the
Green LED above it (On) will blink briefly showing DPA-22 audio controller comms is OK.
Note: Some early releases of this audio device have incorrect software … make sure it has a corrected version.

T440 User’s manual Part A, © JED Micro Pty Ltd 2015 Page 14
Configuring the T440: Using the projector channel codes:
In part B of this manual, hex or ASCII commands strings are shown for each available source in a projector/panel.
You don't ever have to put the hex strings into the device ... they are just shown for illustration and so you can
compare them against the strings in a projector manual. (We do this because often projectors call things by different
names on different models. Having the strings helps you choose an appropriate string, when they need setting.)
New system for source string naming: All channels are called “Inputs”, NOT Computer 1,2 and Video 1,2. This
is done at Rev40 to allow ANY string to be used with ANY function across both Computer AND Video channels.
(This is useful for sources like HDMI, which can be used BOTH for Computer and Video sources.)
We preset the strings used for the "Input1" and "Input2" keys as defaults to be the first two entries in the Computer
strings table on the page for each projector family:
So to use the Sony example, the first two strings are:
Input1 := A9 + 00 + 01 + 00 + 00 + 02 + 03 + 9A; // Computer1Input A VGA analog-RGB
Input2 := A9 + 00 + 01 + 00 + 00 + 03 + 03 + 9A; // Computer2 Input B or Component
and these are the defaults for the "Computer1" and "Computer2" keys . Whenever there is a DB15 connector we make
this "Computer 1".
Same with video: their default strings are:
Input3 := A9 + 00 + 01 + 00 + 00 + 00 + 01 + 9A; // Video1 Composite Video RCA
Input4 := A9 + 00 + 01 + 00 + 00 + 01 + 01 + 9A; // Video2 S-Video
so the default Video1 key is just about always Composite on a RCA connector and Video2 (if there is one) is S-Video.
So the default first two “Computer” and “Video” strings are automatically setup WITHOUT HAVING TO SET
ANYTHING INTO ANYWHERE!
Bonus : To make it VERY easy to swap S-Video for Composite Video, we have setup the OPT1 switch to just
swap over Video1 and Video2 allocations. Set the switch and toggle the reset switch. At Rev V053, OPT6 replaces
S-Video with HDMI (when available) More recent releases actually default Video2 to HDMI, and OPT6 selects
S-Video. See individual device tables in PartB manual. (On some LCDs, this swaps Composite Video for a second
HDMI channel for Video.) Setting OPT1 AND OPT6 simultaneously will select HDMI as “Video”.
In a similar way, setting OPT5 switch swaps Compter1 and Computer2 sources.
We always put all the strings we can find for a particular family into the internal system data base, and one can just
select which one of the pre-coded strings you want to use, by PUTTING ITS INDEX NUMBER ALONE INTO THE
CONSTANT LOCATIONS 0, 1, 2 AND 3.
So if you want the string called: Input4 := A9 + 00 + 01 + 00 + 00 + 05 + 05 + 9A; // Input D or DVI
to be the string used for the Computer1 key on a T440, simply put its index (i.e. "4") into the “Constant:0” location
(as shown on page 4 of the manual, using a switch setting of E0 on the Program Select switch and 00000100 on the
Options switch).
If you have a keyboard with TWO computer keys, the second key is programmed for one of the other “Input” choices
by putting its index number into Constant:1 (program select switch = E1).
Configuring the T440: Setting up relay drives for video or USB switching, via SER2
There are three functions and JED peripherals which are affected by the relay drive signals which can be set up by
constants 10…13. These relays can be used to drive external equipment, lighting, video conferencing, RGA/VGA or
Composite/S-Video/Video Component switches.
If, for example, a projector has only one VGA input, but the user is installing a system which needs two VGA channels,
a simple relay-controlled switcher can be installed to feed one VGA to the one available projector channel, but have the
T440 switch between these VGA channels.
Note: If using a video switcher feeding one video (projector) channel for two buttons (switched externally) it is
necessary to modify the channel selection constants at E0 … E3 so the same projector channel is selected for
both, i.e. both on VGA or both on Composite Video (or whatever) by setting Constant:0 = Constant:1 or
Constant:2 = Constant:3.

T440 User’s manual Part A, © JED Micro Pty Ltd 2015 Page 15
These are per-channel functions:
1. If a T461 with the –R8 option installed is connected to SER2, these options allow one or two relays out of the
eight installed relays to be automatically actuated when different Computer 1 & 2 and Video 1 & 2 selections
are made;
2. Similarly if a T462-2 or T462-4 is connected to SER2, one or two relays per channel can be selected; and
3. The JED 439 USB switch can be controlled by these constants so either USB Device A or B or none can be
selected for any of the different Computer 1 & 2 and Video 1 & 2 selections. (Note Relay 3 drive for
Computer:2 is available as well.)
Note: If no selections are made manually, the default is set so that RS232 control of a JED 439 USB switcher is
available with no setting up required. This places “07” into constant 10 (Computer 1 selection of Device A), and “08”
into constant 11 (Computer 2 selection of Device B). No settings for video channels or TV are made by default, so in
Video or TV modes the USB connection is not made when the whiteboard is just being used as a white screen.
If it is still desired to operate external relays (in T461 or T462 boxes) when USB switching is desired, these can still be
selected in the high nibble of constants 10 … 13. (Low nibble are switches 5 … 8 and the high nibble are 1 … 4.)
This relay setup allows TWO relay selections per constant/channel, so if “37” is setup in
Constant:10, when Computer1 is selected, Relay 3 operates and USB Device A is selected.
Constant:10 F 0 Relay 1:8 control
via Second serial
port sending
On/Off commands
to T461/T462 or
JED 439 USB
switcher.
Two relays selected by high/low nibble for Computer 1
Constant:11 F 1 Two relays selected by high/low nibble for Computer 2
Constant:12 F 2 Two relays selected by high/low nibble for Video 1
Constant:13 F 3 Two relays selected by high/low nibble for Video 2
Constant:14 F 4 Two relays selected by high/low nibble for TV
Configuring the T440: Setting up PTN WVG2A VGA/audio/USB switcher from SER2
This device is serially controlled at 9600 baud and has a simple 3-wire connection (Tx, Rx, Gnd)
It is setup by loading Constant:$F with a value of 20. It has a simple mode of operation: Channel 1 is selected with a
Computer:1 channel on the T440, and Channel 2 is selected with Computer:2.
Coms OK shows a green flash on the ON / top left LED after pressing the OFF button.
Note: When using a video switcher feeding one video (projector) channel with two VGA channels switched in the
WVG2A, it is necessary to modify the channel selection constants at E0 and E1 so the same projector channel is
selected for both, i.e. both on a single VGA projector channel. (So Constant:1 = Constant:0)
Configuring the T440: Setting up AVlink quad HDMI switcher HRM-2214F from SER2
This switcher handles four HDMI inputs to one HDMI output to a projector or panel. As an active channel is plugged
in, a corresponding green LED lights. As a channel is selected a red LED illuminates. A channel is only selectable if a
signal is active on that channel, and an active target device is plugged in to the output … it is quite fussy in this regard!
This device is serially controlled at 9600 baud and has a simple 3-wire connection (Tx, Rx, Gnd)
Coms OK shows a green flash on the ON / top left LED after pressing the OFF button.
It is setup by loading Constant:$F with a value of 24. It has a simple mode of operation: Channels 1->4 are selected
with a Computer:1/2 then Video: 1/2 channel on the T440.
Note: When using an HDMI switcher feeding one HDMI (projector) channel with up to four HDMI channels switched
in the HRM-2114F, it is necessary to modify the channel selection constants at E0 ->E3 so the same projector HDMI
channel is selected for all switched channels. See: http://www.avglue.com.au/hrm-2214f.html
Configuring the T440: Setting up AVlink MRM-701 switcher/scalar from SER2
This switcher is set up to handle four inputs (VGA, Video, and 2 x HDMI) to one HDMI output to a projector or panel.
As a channel is selected, a red channel LED illuminates.
This device is serially controlled at 9600 baud and has a simple 3-wire connection (Tx, Rx, Gnd)
Coms OK shows a green flash on the ON / top left LED after pressing the OFF button.
ON
12345678
Value
3 7

T440 User’s manual Part A, © JED Micro Pty Ltd 2015 Page 16
It is setup by loading Constant:$F with a value of 25. It has a simple mode of operation:
Computer1Mode: (Send code: 20 + 01 + 01 + 04 + 7E); // Input 4 VGA selected
Computer2Mode: (Send code: 20 + 01 + 01 + 02 + A3); // Input 2 HDMI 2 selected
Video1Mode : (Send code: 20 + 01 + 01 + 06 + C2); // Input 6 Comp Video selected
Video2Mode: (Send code: 20 + 01 + 01 + 01 + 41); // Input 1 HDMI 1selected
Channels 1->4 are selected with a Computer:1/2 then Video: 1/2 channel on the T440.
Note 1: Setting switches 5 and 1 inverts 1 and 2 selection for Computer and Video respectively, so HDMI2 can become
the prime Computer channel, and HDMI1 can become prime Video channel.
Note 2: When using an HDMI switcher feeding one HDMI (projector) channel with up to four HDMI channels
switched in the MRM-701, it is necessary to modify the channel selection constants at E0 ->E3 so the same projector
HDMI channel is selected for all switched channels. See: http://www.avglue.com.au/mrm-701.html
Configuring the T440: Setting up Lightwave UMX-TP-TX100 from SER2
This device is serially controlled at 57600 baud and has a simple 3-wire connection (Tx, Rx, Gnd) It has an HDMI input
with embedded audio, and a PC:VGA (and audio) input. Data is transmitted via a CAT5 cable to a receiver by the
projector or display device.
Channel selected Constant:$F = 30 Constant:$F = 31
Computer 1 HDMI PC:VGA
Computer 2 PC:VGA HDMI
Note: When using a video switcher feeding one video (projector) channel with two VGA channels switched in the
WVG2A, it is necessary to modify the channel selection constants at E0 and E1 so the same projector channel is
selected for both, i.e. both on a single VGA projector channel. (So Constant:1 = Constant:0)
Configuring the T440: Setting up APart Concept1 / T1 from SER2
This is a 2 x 80 watt amplifier with microphone input as well as 4 stereo line inputs (A, B, C and D). The /T option has
100v line transformers, otherwise is identical. APart is a Belgian company represented in Australia by Sennheiser. It is
a surprisingly economical device.
This device is serially controlled at 19200 baud and has a simple 3-wire connection (Tx, Rx, Gnd). The DB9 wiring is
to a female socket on the box, and data goes in to pin3 of the connector. Coms OK shows a green flash on the ON / top
left LED after pressing the OFF button.
The control software for driving the Apart Concept1 or T1 from a T440 is enabled by setting a value of 35 decimal
into Constant:F. The T440 driver turns the unit On and Off, sets channels as per the following table, and sets audio
volume by channel in 20 steps, corresponding to a -80 (off) to 0 dB range of 4dB per step.
T440Channel selected Concept1 Source
Computer 1 Source Input A
Computer 2 Source Input B
Video 1 Composite Source Input C
Video 2 / HDMI. Note: This becomes the prime
Video source if OPT1 is set on the DIP switch
Source Input D

T440 User’s manual Part A, © JED Micro Pty Ltd 2015 Page 17
Configuring the T440: Setting up using UserFlags[0 ... F] (loaded at $D0->$DF)
At Rev 3.11, the ability of setting up aspect ratios via flags at D0 hex to DF hex was added.
UserFlags are addressed in memory in the same way as Constants covered earlier: The flags $0 … $F are selected with
the program/projector selection switches SW2 and SW3. Flags are set up with the Option DIP switches.
e.g. To load flags at UserFlags:A with Flags 1, 3 and 7:
•Set “D” on SW2, “A” on SW3;
•Set Option switches OPT1, OPT3, OPT7 all On, with the rest Off;
•Press the “Reset” switch. Then notice the green LED (above the OFF red LED) flash for 2 seconds.
Switch setup for UserFlags[0 … F] setting (loaded at $D0->$DF)
UserFlag
Program select switch
setting
OPT
1
OPT
2
OPT
3
OPT
4
OPT
5
OPT
6
OPT
7
OPT
8
SW2
SW3
Usage
Asp.
Ratio
Asp.
Ratio
Asp.
Ratio
Asp.
Ratio
Asp.
Ratio
Asp.
Ratio
Asp.
Ratio
Asp.
Ratio
Aspect ratio enable bits by channel
UserFlag:0 D 0 Computer:1 #1 #2 #3 #4 #5 #6 #7 #8
UserFlag:1 D 1 Computer:2 #1 #2 #3 #4 #5 #6 #7 #8
UserFlag:2 D 2 Video:1 #1 #2 #3 #4 #5 #6 #7 #8
UserFlag:3 D 3 Video:2 #1 #2 #3 #4 #5 #6 #7 #8
UserFlag:4 D 4 TV #1 #2 #3 #4 #5 #6 #7 #8
Bit to select Channel Change auto
-
sent Aspect Ratio
UserFlag:5 D 5 Computer:1 #1* #2 #3 #4 #5 #6 #7 #8
UserFlag:6 D 6 Computer:2 #1* #2 #3 #4 #5 #6 #7 #8
UserFlag:7 D 7 Video:1 #1* #2 #3 #4 #5 #6 #7 #8
UserFlag:8 D 8 Video:2 #1* #2 #3 #4 #5 #6 #7 #8
UserFlag:9 D 9 TV #1* #2 #3 #4 #5 #6 #7 #8
Bits to select channels with
On-button aspect select allowed
Bits to select set default
start channel
UserFlag:A D A Allow bits /
Default start
channel
Comp
1
Comp
2
Vid
1
Vid
2
TV Set for master of
master / remote
Def.
Bit
1
Def.
Bit
2
UserFlag:B/E Unused for
now
UserFlag:F D F If #8 = 0, system controls projectors. If #8 = 1, system controls flat panels. #8
* Set this bit to enable “Roll aspect ratio by channel”. (Location F, Bit 0 is used for projector (0) or panel(1)
Configuring the T440: Setting up aspect ratios using UserFlags(0 ... A)
This setup allows setting aspect ratios for projectors and flat panels.
There are two modes of Aspect Ratio Control for projectors and flat panels:
1. Roll Aspect Ratio: This mode is the same as pressing the “Aspect” button on an IR remote, in that each time it is
pressed the Aspect Ratio or Zoom rolls on to the next available one, e.g. 4:3, 16:9, 16:10, Zoom1, Zoom2 and back
to 4:3, with no absolute control of aspect ratios set or rolled through. If “Roll Aspect Ratio” is the only mode

T440 User’s manual Part A, © JED Micro Pty Ltd 2015 Page 18
available, this is indicated in the projector/panel tables in Part B of the T440 manual, and is still usable with these
control flags, to send a “Roll Aspect Ratio” command to channels that have had it enabled for;
2. Absolute Aspect Ratio: This mode sends absolute aspect setting commands to the projector or panel. Because it is
more precise, this software allows individual aspect ratios to be enabled selectively channel by channel.
“Roll Aspect” Setup
In this mode, the “Roll Aspect” command can be selectively allowed or dis-allowed channel by channel by setting up
UserFlags[0 … 4] with an OPT1 bit set on channels “Roll Aspect” is allowed, and making sure all OPT1… OPT8 bits
are cleared on channels being dis-allowed.
On keyboards with a discreet “ON” key (not combo keys such as “Computer/On” etc.) the ON key will then send a
“Roll Aspect” each time it is pressed, for channels where it has been specifically enabled. The “Computer” key will
send a “Pixel Align” command if OPT4 is NOT set, or will send a “Computer:2” command if OPT4 is set to allow
double-hitting on the source buttons. This will roll the aspect ratios through ALL the provided ones.
(Note: On a keyboard with a discrete ON key, if no Aspect ratio send is setup for the On key, the default message when
the On key is pressed again is to send another “Power On” message. This has been added because some NEC projectors
go into a very deep sleep mode with no input signal, and this is the only way to wake them up again.
“Roll Aspect” example
For example, say we are using a Code:E keyboard (8 key, with TV key as well as Compuer and Video, and we wanted
to allow extra presses of the TV key to roll aspect ratios through the provided range (maybe 4 or 5), setup UserFlag:4
with OPT1 On (this allows aspect ratio control for the TV channel only), and then setup UserFlag:A with OPT5 On
(this allows the TV button to be used for Aspect Ratio sending. (Don’t forget to press RESET after each setting and
when you are back on the selected projector/flat panel channel.)
“Absolute Aspect” Setup
Absolute Aspect commands can be setup to be sent automatically, immediately after a source is selected, or aspect can
be altered after a channel is selected, either by using the ON key (for keyboards with an exclusive ON key) or by using
the “combo” keys (Computer(1 or 2)/On, Video/On or TV/On), or both an initial setting and an alterable one. This can
be setup by channel (i.e. not selected ever, only preselected, or alterable dynamically at any time from the preselected
one.)
The aspect ratio strings are numbered #1 … #8, with the ratio for each string, for each device, (in the device tables in
Part B of the manual, these aspect ratios are shown for each display device.). Each string is selected and referred to by
one bit in the control bytes, with OPT1 selected bit corresponding to Aspect-string #1 and so on. (Selecting a non-
assigned string will not send anything.)
There are three fields of flags to be set up:
•Aspect ratio enable bits by channel, UserFlags: 0, 1, 2, 3, and 4 correspond to the five “sources” available on a
T440, Computer 1&2, Video 1&2 and TV, respectively.
Note: “Aspect ratio enable bits” MUST be enabled here as well as “auto-sent” bits in the next block of flags.
On a keyboard with a sole-use ON key (eg code 0, 8, 9 and A keyboards), this ON key rolls through the (enabled)
aspect ratios.
In each of these five UserFlag bytes are eight “enable” bits, with the first aspect ratio string (Aspect:1 in the
projector/flat panel tables in Part B) corresponding to OPT1 being set, etc.
So if any aspect ratio is to be available for any “source” it MUST be pre-enabled for that source by having a bit set
for that source in the UserFlags 0 … 4. For example, Computer:1 might be just using 4:3 (one bit), and Computer:2
might have 4:3 and 16:9 enabled (2 bits). Video might have 3 bits set (4:3 or 16:9 or 16:10), S-Video might have
just 16:9 but the TV source might have up to 8 bits set (4:3small, 16:9, 16:10, 4:3 large, Auto, Full, Zoom1,
Zoom2).
This would look like:
UserFlag:0: Bits 1000 0000 (Computer:1, 4:3 only enabled.)
UserFlag:1: Bits 1100 0000 (Computer:2, 4:3, 16:9 enabled.)
UserFlag:2: Bits 1110 0000 (Video:1, 4:3,16:9 and 16:10 enabled.)
UserFlag:3: Bits 0100 0000 (S-Video:2, 16:9 only enabled.)
UserFlag:4: Bits 1111 1111 (TV, all 8 aspect ratios enabled.) TV key can roll between all aspect ratios.

T440 User’s manual Part A, © JED Micro Pty Ltd 2015 Page 19
(Note: On a keyboard with a discrete ON key, if no Aspect ratio send is setup for the On key, the default message
when the On key is pressed again is to send another “Power On” message. This has been added because some NEC
projectors go into a very deep sleep mode with no input signal, and this is the only way to wake them up again.
•Bit to select Channel Change auto-sent Aspect Ratio, UserFlags:5, 6, 7, 8 and 9 also correspond to the five
“sources” in order, and a single bit in each of these bytes selects which default “Aspect-string” is sent on selecting
a “source” by pressing a channel button. This means that the channel always starts with the same, pre-selected,
aspect ratio.
Note: “Auto-sent” bits MUST be enabled here as well as “aspect ratio enable bits” in the previous block of
flags. If only one aspect ratio is needed, set one flag here and one in the previous group. (If multiple bits are set in
the first group of flags, then the ON key or a select key can roll between them, but they always start on the pre-
selected one from this group of flags.)
So if Aspect-string:1 (say, “set 4:3”) is to be selected as Computer:1 default, then address UserFlags:5 (at “D5” on
SW2/SW3), set OPT1 and press “RESET”.
Then if Aspect-string:2 (say, “set 16:9”) is to be selected for Video:1, set UserFlags:7 (at “D7” on SW2/SW3), set
OPT2 and press “RESET”.
This would look like:
UserFlag:5: Bits 1000 0000 (Computer:1, 4:3 is default.)
UserFlag:6: Bits 1000 0000 (Computer:2, 4:3 is default.)
UserFlag:7: Bits 0100 0000 (Video:1, 16:9 is default.)
UserFlag:8: Bits 0100 0000 (S-Video:2, 16:9 is default.)
UserFlag:9: Bits 0100 0000 (TV, 16:9 is default.)
•Enable bits for allowing combo (Channel/On) keys to roll Aspect ratios in UserFlag[A]. Bits set with OPT1
through OPT5 select sources Computer:1/2, Video:1/2 and TV in that order.
A bit set enables that button/source for setting aspect ratios. Without a bit set, that button/source is NOT enabled.
Note that because the second press of a channel button can be only interpreted in one way, there is a hierarchy of
functions possible:
1. If it is a “Computer” button and no aspect setup and OPT4 is NOT selected, pressing it a second or more times
sends a “Pixel align” code;
2. If it is a “Computer” button and OPT4 is ON, then pressing it a second time sends a Computer:2 code;
3. If OPT is not set, but an Aspect ratio message is enabled in UserFlags:A, then second and subsequent presses
send an Aspect Ratio message which rolls through all allowed as setup in UserFlag0 (above).
Note: Bits 0 and 1 of UserFlag[A] are used for Default Source setting. They are set up at the same time as OPT1
… OPT5 used from this function. Bit2 of UserFlag[A] is used for remote connections.
Configuring the T440: Setting up default source UserFlags[A] for Code 0, 8, 9 and A
(This default source-setting function is only applicable to keyboards with a separate ON key (keyboards Codes 0, 8, 9
and A) … keyboards with combo-keys (Computer/On, Video/On, TV/On) select the channel selected by the combo key
pressed, and so cannot be setup with a default source.)
This setup allows setting a default channel for the T440. This is setup with two OPT bits in UserFlags[A]
Right-most two bits from UserFlags[A] are used
OPT7 OPT8
0 0 No defaults set
1 0 Computer:1
0 1 Video:1
If neither bit is set, there are no defaults active, and on the next start, the initial source command sent is the last one
used.
To load flags at UserFlags:A with OPT7 on:
•Set “D” on SW2, “A” on SW3;

T440 User’s manual Part A, © JED Micro Pty Ltd 2015 Page 20
•Set Option switch OPT7 On, with the rest Off;
•Press the “Reset” switch. Then notice the green LED (above the OFF red LED) flash for 2 seconds.
•Don’t forget to dial up projector code number and press Reset again.
Note: The first 5 bits of UserFlag[A] are used for Aspect Ratio button enabling. They are set up at the same time
as OPT7 and OPT8 used from this function.
Configuring the T440: Setting up Master / Slave between two T440s.
From version V064 it is possible to connect two T440s together via the second serial ports so that they work in tandem.
Tx on one drives Rx of the other, and vice versa. Interconnections should be made with separate twisted pairs in a
CAT5 cable, with the twisted pair grounds grounded at both ends. The projector or display continues to be commanded
from the first serial port on the master. (The first serial port on the remote is NOT connected.)
Both T440s can be powered from the same 12 volt plug pack … connect it to the master unit and run power down other
pairs of the CAT5 cable (see table below).
Key presses on the remote are sent to the master via the serial link and merged with hardware key presses on the master.
LEDs illuminated on the master are also sent serially to the slave, illuminating matching LEDs on the remote. Thus both
units can be used identically, with keys having the same functions and LEDs showing the same status. A projector can
be started from master, volume controlled from the remote, sources changed from the master, and turned off from the
remote. Two-volume-keys pressed together for MUTE works on both keyboards with volume keyboards at each end.
Both units should be identical (same code setup and keyboard).
Setup
The remote unit is setup for use at the far end of the cable simply by setting $CF on SW2 / SW3 (The projector setting
switches.) (Option switches are not used.)
The master device is setup for master mode (transmitting LED data and receiving keyboard data) by setting the flag at
$DA bit 2 to a “1”. (Do this by setting DA on SW2 / SW3, and setting OPT6 (only) ON, and pressing the RESET
switch.) See table on page 15 above.
Then setup the projector code on SW2 / SW3 (on the master only) and then setup the option switches as needed for the
installation. Then press RESET again to lock it in.
Test LED green flash
A self-test of the remote to master wiring and setup is built into the software … press the OFF button when the units are
hooked together (and setup as above), and during the startup sequences the green LED above the OFF button
(On/TV/Video key) will flash briefly. (If a Code-6 (two-button keyboard) is used, the green flash is on the green “ON”
LED.)
Other connections
Screen functions to the screen relay connection work the same as before, but there is no expansion possible to audio
devices such as the T461 or T441 audio units, or the T462-R2 or T462-R4 relay units or serially to the 439 or 443 USB
switches. The 439 switcher can still, however, be driven by the Relay-3 output at the top of the board, switching to USB
channel B when Computer-2 is selected.
Master Remote
Power pin positive + supply feed from plug-pack Green / Green white twisted
together
Power pin positive
Power pin negative - supply feed from plug-pack Orange / Orange white
twisted together
Power pin negative
SER2 Tx RS232 from T440 master to remote. Blue/white SER2 Rx in RS232 for remote T440
Ground Blue (twisted with above) Ground
SER2 Rx in RS232 for remote T440 Brown/white SER2 Tx RS232 from T440 remote
to master
Ground Brown (twisted with above) Ground