eTip-012   Using a LCD TV as Display System for Classes & Presentations

eTouch for Health is an excellent tool for both the classroom and large-group presentations. The challenge is to be able to present the software so that a group can see the details of the images, concepts and techniques and still be cost-effective.

A digital projector is an excellent choice for larger groups but these can be expensive. A lower cost and quality option is the use of a LCD TV with RGB input as your presentation system.

A large screen computer display will also work, but in this tip, we will focus on using the LCD TV as the display system.

1. LCD TV with a RGB (PC) Input

2. Laptop or other computer with an output option for a second Display

3. A RGB cable to connect the two

Note: For most laptops, the 2nd monitor output port is a standard option. For desktop systems or towers, not all systems will have this option. For most of these computers, though, you can purchase a second video card and get the needed output.

A 32 inch (805 mm) is a smaller LCD-TV and is being shown in this Tech Note. This display is adequate for a class of 6-10 people. For larger classes, it might be necessary for everyone to move closer, but it will be adequate in most situations. Of course, larger displays will work better in larger groups, but there is a point where a larger display approaches the cost of a digital projector and then the cost advantages are lost.

Mirroring is the ability of a computer to display the same information on multiple displays. If you are seeing something on your computer but not on the external display, check to make sure that Mirroring is set to On on your computer.

On the Macintosh, which is shown at right, the Detect Displays option queries the external display to see which resolutions it can display. These are then shown in the menu as possible options.

The 800 x 600 Resolution for eTouch for Health was chosen to ensure that it was compatible with the most computers and displays in the world.

NTSC as shown, right, is a standard used in the US and several other countries. PAL and SECAM are other standards.

Millions, right, refers to the number of colors being displayed and is currently the highest standard.

1. Turn TV and Computer off (or put the computer to sleep)

2. Connect the RGB Monitor cable from the Computer to the LCD TV

A standard RGB Monitor Cable has DB-9 connectors. It is called this because the connector is shaped like a D and there are nine pins. Some computers, like the Macintosh, also require an adaptor to connect to one end of this cable, which then plugs into the video output port of the Mac.

3. Turn On the TV and Computer

4. Set the Resolution on the Computer

800 x 600 is the native resolution of eTouch for Health. This is a standard resolution and is commonly supported in nearly all electronic displays. This resolution will fill the screen.

5. Select the RGB-PC Input on the LCD TV (there is usually an Input button on the remote control). Your display may or may not look similar to the image shown below.

6. At this time, you should be seeing eTouch for Health on your remote display.