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Article #16991

NTSC sync rate questions

#16991
From: Nick Sayer
Date: Mon, 11 Jan 1993 20:46
21 lines
1440 bytes
I have an NEC 5FG. It is a multisync RGB monitor. I also have the CPU
boards for an arcade video game. It has NTSC timed analog RGB output.
I want to know if the two will be compatable. I suspect they will, but
I am confused:

It's my understanding that the vertical retrace rate of NTSC is 60 Hz,
and that it is interlaced, yielding 30 pictures per second. But the
monitor says 55-90 Hz vertical sync rate. That sounds compatable
to me.

It's my understanding that the horizontal retrace rate of NTSC is
14 kHz. The monitor says that its acceptable range is 27-79 kHz.
Now 14 x 2 is 28, but am I reading too much into that coincidence?
Am I wrong about the NTSC horizontal rate? Or is NTSC too low-res
for such a fine monitor to deign to display? :-)

-- 
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From: mrapple@quack.sac.ca.us (Nick Sayer)
Subject: NTSC sync rate questions
Message-ID: <fXQx2bD@quack.sac.ca.us>
Organization: The Duck Pond public unix: +1 408 249 9630, log in as 'guest'.
Date: 11 Jan 1993 20:46:24 UTC
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