Posted by Larry in AZ on 11/27/06 19:38

Waiving the right to remain silent, "Jukka Aho" <jukka.aho@iki.fi> said:

> Smarty wrote:
>
>> <ptravel@travelersvideo.com> wrote
>>
>>> My TR600, an NTSC machine, did not exhibit smearing to any
>>> significant degree, and no ghosting. It's resolution was limited to
>>> around 450 lines, which was noticeably below what my VX2000 can do.
>
>> This is truly remarkable, since NTSC is a 525 line system which only
>> displays, in the very optimal case, 480 active lines. The rest are
>> hidden in the 45 line vertical blank interval.
>
> PTravel quoted "lines of horizontal resolution" figures. That's (ahem!)
> a measurement of horizontal resolution, and it is measured by using a
> resolution test target that has _vertical_ lines on it.
>
> You're confusing those figures with the number of "active" scanlines in
> video signal, which has more to do with vertical resolution.

A common mistake, which needs correction several times each month...

--
Larry Jandro
Video Engineering & Equipment Rentals
Scottsdale, Arizona, USA
[Remove spamtrap in ALLCAPS to reply]

[Back to original message]