26 Feb
2012
26 Feb
'12
1:08 p.m.
-----Original Message-----
From: cctalk-bounces at classiccmp.org
[mailto:cctalk-bounces at classiccmp.org] On Behalf Of Tony Duell
Sent: 26 February 2012 20:14
To: cctalk at classiccmp.org
Subject: Re: UK versus US monitor question
A long time ago...
It used to be the case that TVs synced to the
mains
frequency but I don't
Was it? think that=92s been the case since we went 625
line. Which
Monitor was it=
?
Both 405 line (System A) and 625 line (System I) TVs over here have a
50Hz vertical scan rate (or close to it), but AFAIK they all
synced to
pluses i nthe video signal. Certainly the schemaitcs for systme A TVs
that I've just looekd at confirm this.
While there are advantages i nhavign the vertical scan rate
cloe to the
mains frequency, it's not requried, and you should ahve no problems
running a 50Hz vertical monitor off 60Hz mains of vice versa
if the PSU
in the monitor can handle it. I've vertainly run plenty of US-spec
montiors over here.
> I don't really want to split the package up, TBH - I am
not sure that
the
monitor is worth much on its own.
=20
Prossibly trying to avoid shipping costs to the US. By produces 50Hz frame sync so he will need a
monitor that
syncs to 50Hz, no=
t
60Hz as most US monitors do. From the brief web page I read
the UK101 als=
o
produces PAL not NTSC so he will need a PAL monitor or
tweak the UK101.=20
Eh? I didn;t think the UK101 produced any form of colour
output, which is
what PAL would specify. Most likely that's a page that
incorrectly uses
'PAL' to mean '50Hz vertical'.
-tony