Teledyne 980 DP1.4, Руководство пользователя, Страница: 350 / 507

980 DP 1.4 Video Generator / Analyzer - User Guide Rev. A1
Page 350 June 16, 2017
16.42 DOT_10,DOT_12,DOT24
16.42.1Description
The active video area is filled with multiple rows of white, single pixel dots. The dots define the corners of what
would appear to be square boxes if all connecting pixels were lit. The number of rows of boxes and the number of
boxes per row depends on which version of the image is selected and the screen aspect ratio of the
currently-loaded format. The number in the image
’s name refers to the number of boxes that will be formed along
the minor axis for most aspect ratios. The generator calculates the ratio and then finds the closest match from the
following table.
The primary version has white pixel dots on a black background. A secondary version has black pixel dots on a
white background.
The primary version of the Dot_24 image is shown below.
16.42.2Purpose
To accurately produce an image on a color monitor, the three electron beams in the CRT must meet (converge) at
the same location at the same time. Small dots displayed on a misconverged monitor appear as a group of
multi-colored dots.
Aspect Ratio Dot_10 Dot_12 Dot_24
W : H
Decimal Number
of Rows Boxes
per Row Number
of Rows Boxes
per Row Number
of Rows Boxes
per Row
16 : 9
5 : 3
4 : 3
1 : 1
3 : 4
1.777 É
1.666 É
1.333 É
1.000
0.750
10
10
10
10
14
16
16
14
10
10
10
10
12
12
16
16
16
16
12
12
18
18
24
24
32
32
30
32
24
24