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.
--
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Peter Scott
__________________________________________________ _______________________

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

uk.media.home-cinema

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

uk.media.home-cinema



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Peter Scott
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"Peter Scott" wrote in message
...
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


This the cable?

http://tinyurl.com/258t2x

George wrote:
"Peter Scott" wrote in message
...
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


This the cable?

http://tinyurl.com/258t2x



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.
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Peter Scott
__________________________________________________ _______________________

On Fri, 07 Sep 2007 22:11:01 +0100, Peter Scott
wrote:

Peter Scott! ain't you dead?
You was into birds werent you?
================================================== ===============\
| Internode Ltd - http://www.solidisk.com/ |
|-----------------------------------------------------------------|
| John Rumm - |
\================================================= ================/

On Fri, 07 Sep 2007 22:22:10 +0100, John Rumm
wrote:

On Fri, 07 Sep 2007 22:11:01 +0100, Peter Scott
wrote:

Peter Scott! ain't you dead?
You was into birds werent you?

How cruel

Mary

"John Rumm" wrote in message
...

================================================== ===============\
| Internode Ltd - http://www.solidisk.com/ |
|-----------------------------------------------------------------|
| John Rumm - |
\================================================= ================/

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

cheers,
clive

In article ,
Peter Scott wrote:
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.

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.

--
*Why is the time of day with the slowest traffic called rush hour?

Dave Plowman London SW
To e-mail, change noise into sound.

Clive George wrote:
"John Rumm" wrote in message
...

================================================== ===============\
| Internode Ltd - http://www.solidisk.com/ |
|-----------------------------------------------------------------|
| John Rumm - |
\================================================= ================/

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

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....


--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

Peter Scott wrote:

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?

See:

http://www.engadgethd.com/2006/01/14...ponent-cables/


You 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.

On 2007-09-07 21:53:31 +0100, Peter Scott said:

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



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.

In article ,
Peter Scott writes
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.

Try this one from CPC at just under a tenner :
http://preview.tinyurl.com/22wd5o , 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.
--
fred
Plusnet - I hope you like vanilla

Andy Hall wrote:

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.

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.

On 2007-09-08 00:55:30 +0100, (Steve Firth) said:

Andy Hall wrote:

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.

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.

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.

http://www.belden.com/pdfs/Techpprs/rhtheatp.htm


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

"Peter Scott" wrote in message
om...
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.
--
__________________________________________________ _______________________

Composed using Mozilla Thunderbird and virus checked using Grisoft AVG

Peter Scott
__________________________________________________ _______________________

Component cable is the same as RGB cable.

For ready made cable see:
http://www.maplin.co.uk/module.aspx?...=35903&doy=8m9

To make your own use:
http://www.maplin.co.uk/module.aspx?...220611&doy=8m9

I 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!

In article ,
Andy Hall wrote:
Belden has some notes and white papers on cable choice - e.g.

http://www.belden.com/pdfs/Techpprs/rhtheatp.htm

Love their 'small' coax in the first line of the table - 115". That would
be very low loss low frequency stuff?

--
*Gaffer tape - The Force, light and dark sides - holds the universe together*

Dave Plowman London SW
To e-mail, change noise into sound.

Dave Plowman (News) wrote:

In article ,
Andy Hall wrote:
Belden has some notes and white papers on cable choice - e.g.

http://www.belden.com/pdfs/Techpprs/rhtheatp.htm

Love their 'small' coax in the first line of the table - 115". That would
be very low loss low frequency stuff?

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

http://www.bluejeanscable.co.uk/store/rgbhv/index.htm

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

On 2007-09-08 09:57:52 +0100, "Dave Plowman (News)"
said:

In article ,
Andy Hall wrote:
Belden has some notes and white papers on cable choice - e.g.

http://www.belden.com/pdfs/Techpprs/rhtheatp.htm

Love their 'small' coax in the first line of the table - 115". That would
be very low loss low frequency stuff?

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

Malcolm H wrote:
"Peter Scott" wrote in message
om...
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 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!



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!

--
__________________________________________________ _______________________

Composed using Mozilla Thunderbird and virus checked using Grisoft AVG

Peter Scott
__________________________________________________ _______________________

Mary Fisher wrote:
On Fri, 07 Sep 2007 22:22:10 +0100, John Rumm
wrote:

On Fri, 07 Sep 2007 22:11:01 +0100, Peter Scott
wrote:

Peter Scott! ain't you dead?
You was into birds werent you?

How cruel

Mary


No I can feel a pulse
--
__________________________________________________ _______________________

Composed using Mozilla Thunderbird and virus checked using Grisoft AVG

Peter Scott
__________________________________________________ _______________________