Connecting Philips CM8833 monitor to C64
Paashaas
I have this Philips CM8833 Monitor (the first model) which has a CVBS-input.
If I connect it to the yellow cinch of a standard monitor cable, the
colors are messy. I cannot put the chroma cinch in it, which probably
causes the messy colors.
The monitor has an scart input though as well as another round shaped
input which says TTL-RGB. Check out
http://www.amiga-hardware.com/display_photos/CM8833monitor04.jpg for an
image.
Which cable do I need to get a good image?
Thanks,
Jarno
Sam
You have a C64c isn't ?? It has a 8-pin audio/video connector.
At a cable with Red, Yellow and White cinch connectors, Red is chroma,
Yellow is luminance and White is audio. Connecting luminance to a CVBS
input gives a black and white picture. You need another cable with
composite video. See this schematic: http://pinouts.ru/Video/C128C64CVideo_pinout.shtml
Regards, SAM
Martijn van Buul
> Hello,
>
> I have this Philips CM8833 Monitor (the first model) which has a CVBS-input.
Did anyone ever bother to open up one of these? As far as I know, they're
closely related to the 1084 - which did have split luma/chroma. I wouldn't
be surprised if it could be easily converted.
That said, you have two options:
1) Make yourself a new cable. Since you're going to need the composite video
signal, a 5-pin DIN plug will work. They're the same connector used on
some audio equipment - in my experience they're easier to find than a
8-pin video connector. Connect the audio to pin 3, composite to pin 4,
shield to pin 2. See http://www.hardwarebook.info/C64_Audio/Video
2) Make a small adaptor. Get two female RCA plugs, a male one, some wire
and a small (~470nf) ceramic capacitor, like this:
CHROMA_GND ----------+
|
+------------------- CVBS_GND
|
LUMA_GND -----------+
~470nf
CHROMA -----||-------+
|
+------------------- CVBS_GND
|
LUMA --------------+
Haven't tested it, but I've used a similar schematic several times to
convert S-Video to composite, which is *almost* the same. Capacity isn't
critical.
That said, building a new cable is probably easier - but possibly more
expensive, as DIN plugs have become a bit of a niche market.
--
Martijn van Buul - pi...@dohd.org
Paashaas
> * Paashaas:
>> Hello,
>>
>> I have this Philips CM8833 Monitor (the first model) which has a CVBS-input.
>
> Did anyone ever bother to open up one of these? As far as I know, they're
> closely related to the 1084 - which did have split luma/chroma. I wouldn't
> be surprised if it could be easily converted.
>
> That said, you have two options:
>
<snip>
Thanks for the answer! Unfortunately I am totally not into building
electronics stuff; I'm afraid even building a simple cable is too
complicated for me.
So, would this cable do the job you think?
http://www.vesalia.de/e_c64kabel[4636].htm (the Commodore 64 Monitor
Cable CVBAS one).
Bill Garber
"Paashaas" <paas...@home.nl> wrote in message news:68d8d$4c4e0059$524b6e3b$11...@cache5.tilbu1.nb.home.nl...
> Op 26-7-2010 19:00, Martijn van Buul schreef:
>> * Paashaas:
>>> Hello,
>>>
>>> I have this Philips CM8833 Monitor (the first model) which has a CVBS-input.
>>
>> Did anyone ever bother to open up one of these? As far as I know, they're
>> closely related to the 1084 - which did have split luma/chroma. I wouldn't
>> be surprised if it could be easily converted.
>>
>> That said, you have two options:
>>
>
> <snip>
>
> Thanks for the answer! Unfortunately I am totally not into building
> electronics stuff; I'm afraid even building a simple cable is too
> complicated for me.
>
> So, would this cable do the job you think?
> http://www.vesalia.de/e_c64kabel[4636].htm (the Commodore 64 Monitor
> Cable CVBAS one).
No, the "Commodore 64 Monitor Cable Y/C" one.
Bill
Antti Pyykko
>
> "Paashaas" <paas...@home.nl> wrote
>> So, would this cable do the job you think?
>> http://www.vesalia.de/e_c64kabel[4636].htm (the Commodore 64 Monitor
>> Cable CVBAS one).
Yes it would.
> No, the "Commodore 64 Monitor Cable Y/C" one.
He already has that cable, but his Philips CM8833 does not
have Y/C inputs.
--
Microsoft Corp is prohibited from redistributing this work
Bill Garber
"Antti Pyykko" <comp.s...@molukki.com> wrote in message news:slrni4t64p.v...@hanuri.dap...
> On 2010-07-27, Bill Garber <will...@garberstreet.com> wrote:
>>
>> "Paashaas" <paas...@home.nl> wrote
>>> So, would this cable do the job you think?
>>> http://www.vesalia.de/e_c64kabel[4636].htm (the Commodore 64 Monitor
>>> Cable CVBAS one).
>
> Yes it would.
>
>> No, the "Commodore 64 Monitor Cable Y/C" one.
>
> He already has that cable, but his Philips CM8833 does not
> have Y/C inputs.
Sorry, my bad. I got confused by the conversion diagrams.
Bill
rusure
> Op 26-7-2010 19:00, Martijn van Buul schreef:
> > closely related to the 1084 - which did have split luma/chroma. I wouldn't
> > be surprised if it could be easily converted.
>
> > That said, you have two options:
>
> electronics stuff; I'm afraid even building a simple cable is too
> complicated for me.
I once connected a C128 to a VIC 20 monitor with a cable with an 8 pin
din on the computer side and 2 RCA jacks .for separate LUMA/ CHROMA
video. Just combine the LUMA and CHROMA leads with a Y cable. Plug
the Y into the RCA video jack in the monitor. When I did this, I was
SHOCKed that it worked!!