EIA TEP105-8-1987

$20.15

Raster Response Measurement for Monochrome Cathode Ray Tubes

Published By	Publication Date	Number of Pages
ECIA	1987	7

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Description

The purpose of this test is to measure the resolution capability
of a cathode ray display tube.

Raster scan is the most widely used method of displaying
information on a CRT. The test described in this section gives a
figure of merit related to the resolution of the display tube. The
resolution is dependent on:

1. The electron beam distribution as it is focussed onto the
phosphor screen.

2. Electron scatter and light scatter due to the granular
nature of the phosphor and the aluminum backing of the screen.

3. Saturation of the phosphor.

4. Internal reflections within the faceplate and panels mounted
onto the faceplate.

5. Optical effects of coatings, etchings, etc., on the faceplate
and panel.

Other external influences including ambient light are not
addressed in this method. As well, the transfer
characteristics of the viewing system are not considered.

Additional information