The front panel keyboard of the T460 is shown above, is 76mm by 58mm, and is mounted on either a white or black Clipsal 2000 series blank power  point base or grid plate. Behind the window is a two-line backlit LCD screen showing system status. The T460 has an attractive white, or black, smooth escutcheon surrounding it to give an overall size of 110mm by 70mm. This covers the screw holes and can be mounted into a lectern or desk at a convenient point for the speaker to control video and data projector operations. Alternatively, the controller and front assembly can be mounted on a black or white Clipsal 2000 base block, and can be wall mounted near the operator's position.

As an option, just the adhesive backed keyboard and electronics board can be supplied without a Clipsal plate, to allow installers to mount the system on their own panel to match the decor of media control desks or wall plates in boardrooms, etc.

The T460 is wired back to the LCD projector via an RS232 data cable, needing only three wires (TX, RX and Ground). The control codes for many hundreds of projectors are programmed into the T460 controller, and a variety of customising set-ups can be performed on the unit via the front panel keys to select different projector makes and models, and then to name video sources from a menu and allocate them to various input channels on the projector. (A connection for a fourth wire with 9 volts on it is available as a CTS or DTR line HIGH to the projector to enable RS232 transmission, as some projectors expect this input to be HIGH before allowing transmission.)

The control of audio level can be done in the projector, and audio control signals are sent to the projector along with the video source and power control signals. If a T461 audio rack is installed, it is controlled with a second serial port on the T460, and the T461 selects and controls the audio levels in step with source select signals sent to the video projector.

The normal keyboard background colour is pale blue, as shown to the right (above). An option of a "beige" background keyboard is available for the "Volume" keyboard, shown on the left (above). See larger photos: T460_Blue.jpg,  T460beige_black_base.jpg, T460beige45.jpg

The T460 has a choice of keyboard labels for the right-hand two keys.

The standard key-labels for the right-hand keys are "VOLUME UP" and "VOLUME DOWN". An option labels the right-hand keys "A/V Mute On" and "A/V Mute Off". This is for installations which do not run audio through the projector or control it via a T461, so the user can mute the system from the T460.

Another option labels the right-hand keys :  "Freeze On/Off" and "Mute On/Off", providing both Freeze and Mute functions to a screen. (Not available for all projectors.) Applications in meeting rooms and churches allow an image to be projected from a PC, and held there while the operator advances to the next screen, or enters information on the laptop and edits it without it being shown till ready.

Pressing both Volume keys together mutes the sound and picture. (Either yellow key restores the picture/sound)

Volume keys auto increment / decrement the audio level if a yellow key is held down. (Times are programmable.)

Note: New production is RoHS (Lead free).