What cable for component video

[Peter Scott]

I am installing a ceiling mounted video projector. I want to use component video with the cables concealed in oval conduit in the plaster. This means I can't use ready made cables. When I looked in CPC and Studiospares the price for the cable made my jaw drop. Does anyone know what an acceptable cable would be for a 15 metre run between soldered or screw joints on faceplates, and where I might get it? The ones I've seen are 5 core with individual screens and cost 5 pounds a metre upwards! Does each core really have to be screened? I suppose I could buy ready-mades and cut off the connectors, but I would prefer to buy a good spec cable.

I have tried to find a ng which specialises in audio-visual but all the various combinations of the relevant words don't find anything. Anyone know of a suitable group?

If anyone's thinking of buying a projector I bought an Epson TW20, which is a good price from eBuyer. I've got it to a 2.4 metre wide image from DVD and its still bright and not pixellish when viewed from about 6 m. And that's just on an emulsioned wall. Screen is yet to arrive.

[George]

Component Video? do you mean Composite Video? By far the S-VHS output is a better choice.

uk.media.home-cinema

[Peter Scott]

No, component - the three signal cables. I think that this gives the best quality, with s-video next and composite the poorest.

Thanks for the ng

George wrote:

[George]

This the cable?

[Peter Scott]

No you have three phono (RCA) plugs, one for each colour. Sometimes I think BNC connectors are used for the highest quality.

Anyway thank for the NG. I've just started browsing it.

[John Rumm]

Peter Scott! ain't you dead? You was into birds werent you? =================================================================\ | Internode Ltd -

| |-----------------------------------------------------------------| | John Rumm - [e-mail] | \=================================================================/

[Mary Fisher]

How cruel

Mary

[Clive George]

Oooh, aren't you lucky, your own stalker!

cheers, clive

[Dave Plowman (News)]

You can use any decent video cable - it doesn't have to be a purpose multi-core, although that will be neater. Of course you'll need one length per component. Something like RG59 is cheap and perfectly ok for baseband video.

[John Rumm]

Deep joy... one of the wheels seems to have fallen off his pram. Must have thrown too many toys out at once I guess.

Still they say imitation is the sincerest form of flattery....

[Steve Firth]

need good quality 75 Ohm coaxial cable, the same stuff used for Freeview/Satellite TV.

The RG-6 referred to in the article above isn't really a standard cable type it's just a vague hand-wavy name applied to a wide range of cables.

[Andy Hall]

Does the projector have the ability to have separate sync signals? This would need four or possibly five cables to implement. However, the results are better in terms of video jitter than if you use combined syncs - usually that is run on the green video cable along with the video. Even if you have to use this, it's better than S-video and much better than composite.

The cables should be individually screened or even run as a formed bundle. Good quality 75ohm low loss baseband video cable should be used.

[fred]

In article , Peter Scott writes

Try this one from CPC at just under a tenner :

, the paper catalogue describes it as HQ and I would trust CPC enough to deliver the goods or accept a return. It has phonos to test it before you cut them off for the install.

Baseband video isn't really that demanding an application and 15m isn't really that long.

Ready mades seem the cheap way to buy multicore video cables, just watch out for the uber skinny cables, they just can't meet specs.

[Steve Firth]

You're thinking of RGB with sync on green. Component video is YPbPr with sync on Y.

Y is luminance, Pb is blue - luminance and Pr red-luminance.

[Andy Hall]

Yes, you're right. I was thinking of RGB, RGBS and RGBHV (i.e. sync on green, split out combined syncs and split out separated syncs).

Either way, the requirement for cabling is the same - good quality

75ohm screened. It will probably be less expensive to buy a reel of single cable and run multiple lengths of that than to get the combined stuff, which may not be as good anyway.

Belden has some notes and white papers on cable choice - e.g.

1694 series appears to be popular for home video system applications.......

[Malcolm H]

Component cable is the same as RGB cable.

For ready made cable see:

make your own use: have a ceiling mounted projector and use a 15m ready made RGB cable concealed in white plastic trunking running across the celing and down a wall. Looks fine and is completely unobtrusive (compared wuth the projector itself!). The trunking also contains cables for power, HDMI (for HD television) and VGA (for computer).

Whole installation is a great success and really makes HD television worthwhile!

[Dave Plowman (News)]

be very low loss low frequency stuff?

[Steve Firth]

This lot are good for custom cables and the prices aren't ludicrous.

've used them for cabling when creating back-projected video walls and also for long run video cabling.

[Andy Hall]

Look on it as an opportunity for boom operators to learn how to drive a JCB.

[Peter Scott]

Many thanks for all the info. I prefer to conceal all wires as far as possible so I think I'll go for made up wire off a reel. I now have all the info I need to do the install. I knew I was right to try this ng. I tried the home-cinema one suggested earlier. Better replies from uk.d-i-y. No surprise there then!