Article View: sci.electronics
Article #4909Re: RGB monitor stuff
From: Bob Myers
Date: Fri, 29 Jun 1990 18:38
Date: Fri, 29 Jun 1990 18:38
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>After getting a number of replies about how high the scan rate was
>for my video game board, I decided to recheck things on my scope.
>This time I got much nicer results! Vertical sync was 60Hz and
>Horizontal was 15,750Hz. Just what NTSC uses. Now the question is,
>how do I know if the signal is interlaced or not without trying it
>out? Is there some way to tell?
The method already presented is fine; however, if it's using these
frequencies, it's almost undoubtedly interlaced. (15.75 kHz at 60Hz
NON-interlaced would only be about 260 lines).
Bob Myers KC0EW HP Graphics Tech. Div.| Opinions expressed here are not
Ft. Collins, Colorado | those of my employer or any other
myers%hpfcla@hplabs.hp.com | sentient life-form on this planet.
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arc1-ca.pugleaf.net!utzoo!attcan!uunet!jarthur!usc!zaphod.mps.ohio-state.edu!sdd.hp.com!decwrl!ucbvax!hplabs!hpfcso!hpfcdj!myersReferences:
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!jarthur!usc!zaphod.mps.ohio-state.edu!sdd.hp.com!decwrl!ucbvax!hplabs!hpfcso!hpfcdj!myers From: myers@hpfcdj.HP.COM (Bob Myers) Newsgroups: sci.electronics Subject: Re: RGB monitor stuff Message-ID: <17660081@hpfcdj.HP.COM> Date: 29 Jun 90 18:38:22 GMT References: <26898b37@nw.com> Organization: Hewlett Packard -- Fort Collins, CO Lines: 16