Main > Monitor/Video Forum
How to use SCART for our hobby
Zebidee:
--- Quote from: Level42 on April 15, 2008, 01:22:59 pm ---So, stick to the standards, and you'll be 100% sure it works.
--- End quote ---
Agreed. However, given the extra difficulty and complication of adding power supply from a molex connector, I would still suggest that one tries doing it by just jumping a wire from pin 20 to pin 16 first. Modify the cable if it doesn't work after that.
I actually keep two types of VGA-SCART cable on hand for testing newly acquired TVs - one with the 5v & 12v power supply via molex connector, and one without.
To put this another way, I've quoted people $40 to make the simple cable and $60 for the complex (or 100%) version, reflecting the extra costs & time (these are bargain basement rates for "mame-brothers", esp. considering the time involved). In most cases, one only needs the simple version.
SailorSat:
I'd like to point out that this cable only works if the card outputs COMPOSITE Sync.
If it doesn't (like with Soft-15kHz) you'll need to connect VGA Pin 13 and VGA Pin 14 to SCART Pin 20.
Zebidee:
--- Quote from: SailorSat on April 19, 2008, 07:29:02 am ---I'd like to point out that this cable only works if the card outputs COMPOSITE Sync.
If it doesn't (like with Soft-15kHz) you'll need to connect VGA Pin 13 and VGA Pin 14 to SCART Pin 20.
--- End quote ---
Good point, SailorSat!
Note that if the video card outputs negative sync on both horizontal & vertical (H&V), then you won't have any problems with just twisting the wires from VGA pins 13 & 14 together and connecting them to SCART pin 20 to make the cable. Every ATI-based card I've used outputs negative on both VGA 13 & 14.
The ArcadeVGA cards work this way - just twist the wires together and you'll be fine.
However, if your card outputs some combination of positive and negative sync then you could have a problem. NVidia cards seem to allow you to change the sync polarity, so it is worthwhile checking this for your particular card. Make both H&V negative if possible.
SailorSat:
Both ATI and NVIDIA can be configured, so that shouldn't be a problem.
Also in Soft-15kHz all syncs are negative.
Mr Kray:
Hey guys,
I'm in Australia too and when I bought the TV for my cabinet in 2001 I did a lot of research to try and find a TV with SCART.. now I'm not sure if what I was told is true or if it was and has sinced changed but...
I was told by a number of retailers including specialist importers that almost every TV in Australia - that isn't imported from Europe - with SCART doesn't actually have true RGB, the RGB pins are just hooked up to the composite (or maybe s-video) input. This is due to the TVs all being manufactured in the same factory but then shipped off to different places; so for Australia they use the casing for all over the world but just put in a dodgy SCART port that is really no more than composite or s-video.
For this reason I just went for the S-Video... Although the TV I bought had SCART as well (I say had as I blew it up shortly after putting it in the cabinet! Now I just have a TV with s-video and composite :banghead: )
Can anyone confirm this?
Mr Kray
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