Wanted : Monitor Capable of TTL RGB
ard at p850ug1.demon.co.uk
Sun Oct 31 13:34:31 CDT 2010
> ard at p850ug1.demon.co.uk (Tony Duell) writes:
> > Is CM8833 a TTL-input monitor?
> It depends -- there were lots of variants of the 8833 with different
> input options. I've owned three: a Philips-branded one that has analogue
> RGB on a DE9, a Commodore 1084S which has separate DINs for analogue and
> TTL RGB, and the Acorn equivalent which has a SCART connector.
That's what I thought. I beleive there was also a version with a built-in
PAL decoder (composite colour video input),
As an aside, therw was a PAL-input (internal decoder) version of the
Microvitec Cub too.
> The 1084S at least is perfectly happy to accept TTL RGB on its analogue
> RGB input, as you suggest; I use mine that way with my BBC Micros
Indeed. I normally put a 300 ohm resisotr in series with each TTL signal,
given the 75 ohm terminatiuons,that brings 5V signalsdown to 1V.
> (having made up the cable when I didn't have the right DIN plug for the
> TTL input!). They're really nice monitors, aside from the tendency of
Not for this model of monitor, but once when I didn't have the right plug
to hand, I pulled the case and temporarily soldered the wires straight to
> the flap covering the controls to fall off and get lost. The 1084S
> seemed quite expensive in 1990, but given that it's still in regular use
> 20 years later, I'm not going to complain. ;-)
Actuially I think mine has a vertical deflection fault at the moment
(I've not used it for soem time). I have the schematics, it can't be hard
to sort out.
> What I'd really like is a nice big old broadcast-quality RGB monitor to
> use with classic computers and laserdisc/video, but I'm not too hopeful
> about one coming up locally (Dundee), and I wouldn't want to ship one...
You're not gettign mine :-). I have an old (delta gun CRT...) Barco
complete with the 'user manual'. That manual has one page telling you how
to use the brightness and gain (contrast) controls, a couple of pages
explaining how to mount it in a rack, and lots of pages of scheamatics,
alightment data, waveforms, etc. Amd yes the manual does make reference
to 'studio use'.
Analogue RGB inputs on BNC sockets, of course.
More information about the cctalk