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Convergence Tester   [2010]

Convergence Tester Released by :
uka

Release Date :
6 November 2010

Type :
C64 Tool

User rating:awaiting 5 votes (4 left)   See votestatistics

Credits :
Code .... uka of Komoda Team

Download :
http://csdb.dk/getinternalfile.php/93068/convergence_test.prg (downloads: 386)
http://csdb.dk/getinternalfile.php/93129/Commodore_1802_convergence_adjustment.pdf (downloads: 297)

Look for downloads on external sites:
 Pokefinder.org


User Comment
Submitted by uka on 8 November 2010
@Frantic: Color monitor has three electron beam guns (each for one of three color components). Cathode-ray tube has special magnets to set convergence of all electron beams. If this is not set properly the picture is bad. For example, instead of the white lines you see this:



Program generates test screens for the pairs of beams: R+B (purple), R+G (yellow), G+B (cyan) and for all three beams R+G+B (white). With this adjust the magnets is easier. See pdf file.
User Comment
Submitted by Frantic on 8 November 2010
@uka: What is the exact purpose? My guess is that it shows whether the lines will seem to be straight or not, but... It would be nice if you could elaborate a little on the more exact purpose and thoughts behind this program? I am curious.
User Comment
Submitted by uka on 6 November 2010
My old tool for crt monitor. Maybe it would be useful to someone.
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