| | More than just a pretty face... (via CobWeb/3.1 planetlab2.cs.umd.edu) (Site not responding. Last check: 2007-10-20) |
 | | A professional-grade television monitor (and indeed most computer visual display units, now also called monitors) are designed to project a picture (called a raster) that is wholly displayed within the face of the display tube, whatever the shape of either may be, so that the whole of the broadcast picture is visible. |
 | | Domestic receivers however, almost invariably project a raster that is larger than the display screen and a significant border of the transmitted picture may be cut off by the edge of the tube or a mask surrounding the front of the tube. |
 | | An accurate way of adjusting the saturation, brightness and contrast of a colour receiver is to observe the bars on the screen with just one colour lit (usually blue) and tweak until all the lit bars are the same brightness, so I have included the blue-gun display for each pattern as well. |
| www.pembers.freeserve.co.uk.cob-web.org:8888 /Test-Cards/Test-Card-Technical.html (12904 words) |