Shielded CAT-5 that is more flexible

J

Joerg

Guest
Hello All,

Does anyone have a link or hint regarding shielded CAT-5 which is as
flexible as the better non-shielded patch cables?

Regular shielded is quite stiff. During EMC we discovered that a cable
inside a unit needs to be shielded and it has to go through a harness
that will be bent back and forth whenever a drawer mechanism opens. Not
every minute or so, just once in a while. It just can't be too stiff.

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.
 
On Thu, 05 Jun 2008 11:54:24 -0700, Joerg
<notthisjoergsch@removethispacbell.net> wrote:

Does anyone have a link or hint regarding shielded CAT-5 which is as
flexible as the better non-shielded patch cables?

Regular shielded is quite stiff. During EMC we discovered that a cable
inside a unit needs to be shielded and it has to go through a harness
that will be bent back and forth whenever a drawer mechanism opens. Not
every minute or so, just once in a while. It just can't be too stiff.
Click to expand...
Are you using solid CAT5 wire or stranded? The stranded is obviously
more flexible. Google shows lots of sources for CAT5e stranded STP
(shielded twisted pair).

--
# Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060
# 831-336-2558 jeffl@comix.santa-cruz.ca.us
# http://802.11junk.com jeffl@cruzio.com
# http://www.LearnByDestroying.com AE6KS
 
On Thu, 05 Jun 2008 16:11:31 -0700, Jeff Liebermann <jeffl@cruzio.com>
wrote:

On Thu, 05 Jun 2008 11:54:24 -0700, Joerg
notthisjoergsch@removethispacbell.net> wrote:

Does anyone have a link or hint regarding shielded CAT-5 which is as
flexible as the better non-shielded patch cables?

Regular shielded is quite stiff. During EMC we discovered that a cable
inside a unit needs to be shielded and it has to go through a harness
that will be bent back and forth whenever a drawer mechanism opens. Not
every minute or so, just once in a while. It just can't be too stiff.

Are you using solid CAT5 wire or stranded? The stranded is obviously
more flexible. Google shows lots of sources for CAT5e stranded STP
(shielded twisted pair).
Click to expand...
Also, you might want to try flat CAT5 cable, which is also available
in shielded. I've never even seen the stuff, so I have no idea if
it's any more flexible, but it might be more convenient if it can fold
behind the drawer mechanism. Note that the flat CAT5 cable usually
comes pre-terminated with RJ-45 plugs.


--
# Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060
# 831-336-2558 jeffl@comix.santa-cruz.ca.us
# http://802.11junk.com jeffl@cruzio.com
# http://www.LearnByDestroying.com AE6KS
 
Jeff Liebermann wrote:
On Thu, 05 Jun 2008 11:54:24 -0700, Joerg
notthisjoergsch@removethispacbell.net> wrote:

Does anyone have a link or hint regarding shielded CAT-5 which is as
flexible as the better non-shielded patch cables?

Regular shielded is quite stiff. During EMC we discovered that a cable
inside a unit needs to be shielded and it has to go through a harness
that will be bent back and forth whenever a drawer mechanism opens. Not
every minute or so, just once in a while. It just can't be too stiff.

Are you using solid CAT5 wire or stranded? The stranded is obviously
more flexible. Google shows lots of sources for CAT5e stranded STP
(shielded twisted pair).
Click to expand...
Thanks, Jeff. I didn't remember "STP". Dang, I think I am getting old
here ...

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.
 
On Thu, 05 Jun 2008 18:12:32 -0700, Joerg
<notthisjoergsch@removethispacbell.net> wrote:

Jeff Liebermann wrote:
On Thu, 05 Jun 2008 11:54:24 -0700, Joerg
notthisjoergsch@removethispacbell.net> wrote:

Does anyone have a link or hint regarding shielded CAT-5 which is as
flexible as the better non-shielded patch cables?

Regular shielded is quite stiff. During EMC we discovered that a cable
inside a unit needs to be shielded and it has to go through a harness
that will be bent back and forth whenever a drawer mechanism opens. Not
every minute or so, just once in a while. It just can't be too stiff.

Are you using solid CAT5 wire or stranded? The stranded is obviously
more flexible. Google shows lots of sources for CAT5e stranded STP
(shielded twisted pair).


Thanks, Jeff. I didn't remember "STP". Dang, I think I am getting old
here ...
Click to expand...
And single braided over shield is more flexible than any foil shield
version, maybe even 45 % coverage would pass and it is more flexible
than 95 % varieties.
 
Joerg wrote:

Hello All,

Does anyone have a link or hint regarding shielded CAT-5 which is as
flexible as the better non-shielded patch cables?

Regular shielded is quite stiff. During EMC we discovered that a cable
inside a unit needs to be shielded and it has to go through a harness
that will be bent back and forth whenever a drawer mechanism opens. Not
every minute or so, just once in a while. It just can't be too stiff.
Click to expand...
My studio installation guy says he know just the stuff you need, it's about
as flexible as microphone cable.

He gets it fron Canford Audio in the UK, I haven't found the part number
though (their search engine is rubbish). He has something like 10-20 m on
hand if you only need to purchase a small length. You could pay him via
Paypal or whatever (that's cheapest).

Contact him on robert@westnospamwick-spamtrap-.com

Graham
 
JosephKK wrote:
On Thu, 05 Jun 2008 18:12:32 -0700, Joerg
notthisjoergsch@removethispacbell.net> wrote:

Jeff Liebermann wrote:
On Thu, 05 Jun 2008 11:54:24 -0700, Joerg
notthisjoergsch@removethispacbell.net> wrote:

Does anyone have a link or hint regarding shielded CAT-5 which is as
flexible as the better non-shielded patch cables?

Regular shielded is quite stiff. During EMC we discovered that a cable
inside a unit needs to be shielded and it has to go through a harness
that will be bent back and forth whenever a drawer mechanism opens. Not
every minute or so, just once in a while. It just can't be too stiff.
Are you using solid CAT5 wire or stranded? The stranded is obviously
more flexible. Google shows lots of sources for CAT5e stranded STP
(shielded twisted pair).

Thanks, Jeff. I didn't remember "STP". Dang, I think I am getting old
here ...

And single braided over shield is more flexible than any foil shield
version, maybe even 45 % coverage would pass and it is more flexible
than 95 % varieties.
Click to expand...
Well, so far I have only seen Foil shield. Do you remember a brand with
braided shield?

I did find dual-pair microphone cable which would work since LAN only
needs two pairs. But it won't be so easy to get a standard RJ jack
connected in production.

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.
 
Eeyore wrote:
Joerg wrote:

Hello All,

Does anyone have a link or hint regarding shielded CAT-5 which is as
flexible as the better non-shielded patch cables?

Regular shielded is quite stiff. During EMC we discovered that a cable
inside a unit needs to be shielded and it has to go through a harness
that will be bent back and forth whenever a drawer mechanism opens. Not
every minute or so, just once in a while. It just can't be too stiff.

My studio installation guy says he know just the stuff you need, it's about
as flexible as microphone cable.

He gets it fron Canford Audio in the UK, I haven't found the part number
though (their search engine is rubbish). He has something like 10-20 m on
hand if you only need to purchase a small length. You could pay him via
Paypal or whatever (that's cheapest).
Click to expand...
Thanks, Graham. However, we'd need quite a bit more than that, it'll be
for production.

Meantime I did find some microphone cable that could work though. I was
surprised that they had dual twisted pairs.


Contact him on robert@westnospamwick-spamtrap-.com

Graham
Click to expand...
--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.
 
Marte Schwarz wrote:
Hi Jörg,
Does anyone have a link or hint regarding shielded CAT-5 which is as
flexible as the better non-shielded patch cables?

be careful, CAT5 cable doesn't like radius under two inches AFAIR. If a
cable is too flexible it may tend to untwist itself and then you may get
garbage...
Click to expand...
We won't go much under 2". Slight loss of twisting would be ok here
since data rates are really low.

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.
 
Joerg wrote:

Eeyore wrote:
Joerg wrote:

Does anyone have a link or hint regarding shielded CAT-5 which is as
flexible as the better non-shielded patch cables?

Regular shielded is quite stiff. During EMC we discovered that a cable
inside a unit needs to be shielded and it has to go through a harness
that will be bent back and forth whenever a drawer mechanism opens. Not
every minute or so, just once in a while. It just can't be too stiff.

My studio installation guy says he know just the stuff you need, it's about
as flexible as microphone cable.

He gets it fron Canford Audio in the UK, I haven't found the part number
though (their search engine is rubbish). He has something like 10-20 m on
hand if you only need to purchase a small length. You could pay him via
Paypal or whatever (that's cheapest).


Thanks, Graham. However, we'd need quite a bit more than that, it'll be
for production.

Meantime I did find some microphone cable that could work though. I was
surprised that they had dual twisted pairs.
Click to expand...
If that's 'starquad' it's unsuitable. Totally different impedance.

Graham
 
Eeyore wrote:
Joerg wrote:

Eeyore wrote:
Joerg wrote:
Does anyone have a link or hint regarding shielded CAT-5 which is as
flexible as the better non-shielded patch cables?

Regular shielded is quite stiff. During EMC we discovered that a cable
inside a unit needs to be shielded and it has to go through a harness
that will be bent back and forth whenever a drawer mechanism opens. Not
every minute or so, just once in a while. It just can't be too stiff.
My studio installation guy says he know just the stuff you need, it's about
as flexible as microphone cable.

He gets it fron Canford Audio in the UK, I haven't found the part number
though (their search engine is rubbish). He has something like 10-20 m on
hand if you only need to purchase a small length. You could pay him via
Paypal or whatever (that's cheapest).

Thanks, Graham. However, we'd need quite a bit more than that, it'll be
for production.

Meantime I did find some microphone cable that could work though. I was
surprised that they had dual twisted pairs.

If that's 'starquad' it's unsuitable. Totally different impedance.
Click to expand...
Ok, but it's only for a 30cm run each system, the rest would be CAT5 and
we don't have to run 1Gb/sec. Thing is, we don't have any music stores
around here where I could take a look. Well, you can buy a fiddle and a
twang box of course, along with the proper Stetson, saddle and boots.
But no fancy electric stuff. Since you are an audio guy: Is that Star
Quad really flexible?

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.
 
Joerg wrote:

Eeyore wrote:
Joerg wrote:
Eeyore wrote:
Joerg wrote:
Does anyone have a link or hint regarding shielded CAT-5 which is as
flexible as the better non-shielded patch cables?

Regular shielded is quite stiff. During EMC we discovered that a cable
inside a unit needs to be shielded and it has to go through a harness
that will be bent back and forth whenever a drawer mechanism opens. Not
every minute or so, just once in a while. It just can't be too stiff.
My studio installation guy says he know just the stuff you need, it's about
as flexible as microphone cable.

He gets it fron Canford Audio in the UK, I haven't found the part number
though (their search engine is rubbish). He has something like 10-20 m on
hand if you only need to purchase a small length. You could pay him via
Paypal or whatever (that's cheapest).

Thanks, Graham. However, we'd need quite a bit more than that, it'll be
for production.

Meantime I did find some microphone cable that could work though. I was
surprised that they had dual twisted pairs.

If that's 'starquad' it's unsuitable. Totally different impedance.


Ok, but it's only for a 30cm run each system, the rest would be CAT5 and
we don't have to run 1Gb/sec. Thing is, we don't have any music stores
around here where I could take a look. Well, you can buy a fiddle and a
twang box of course, along with the proper Stetson, saddle and boots.
But no fancy electric stuff. Since you are an audio guy: Is that Star
Quad really flexible?
Click to expand...
Not to my knowledge it isn't. Never used the stuff though. In fact it's very rarely
used at all, just when required to 'ultra-eliminate' induced voltages into the mic
signal cables. There are two pair twists one going clockwise, one anti-clockwise
you see. You wire them in parallel and it should ALL cancel out.

This appears to be the Canford cable I mentioned.
http://www.canford.co.uk/commerce/item_31-860_22218.aspx
http://www.canford.co.uk/commerce/resources/catdetails/5285.pdf

Graham
 
Eeyore wrote:
Joerg wrote:

Eeyore wrote:
Joerg wrote:
Eeyore wrote:
Joerg wrote:
Does anyone have a link or hint regarding shielded CAT-5 which is as
flexible as the better non-shielded patch cables?

Regular shielded is quite stiff. During EMC we discovered that a cable
inside a unit needs to be shielded and it has to go through a harness
that will be bent back and forth whenever a drawer mechanism opens. Not
every minute or so, just once in a while. It just can't be too stiff.
My studio installation guy says he know just the stuff you need, it's about
as flexible as microphone cable.

He gets it fron Canford Audio in the UK, I haven't found the part number
though (their search engine is rubbish). He has something like 10-20 m on
hand if you only need to purchase a small length. You could pay him via
Paypal or whatever (that's cheapest).

Thanks, Graham. However, we'd need quite a bit more than that, it'll be
for production.

Meantime I did find some microphone cable that could work though. I was
surprised that they had dual twisted pairs.
If that's 'starquad' it's unsuitable. Totally different impedance.

Ok, but it's only for a 30cm run each system, the rest would be CAT5 and
we don't have to run 1Gb/sec. Thing is, we don't have any music stores
around here where I could take a look. Well, you can buy a fiddle and a
twang box of course, along with the proper Stetson, saddle and boots.
But no fancy electric stuff. Since you are an audio guy: Is that Star
Quad really flexible?

Not to my knowledge it isn't. Never used the stuff though. In fact it's very rarely
used at all, just when required to 'ultra-eliminate' induced voltages into the mic
signal cables. There are two pair twists one going clockwise, one anti-clockwise
you see. You wire them in parallel and it should ALL cancel out.

This appears to be the Canford cable I mentioned.
http://www.canford.co.uk/commerce/item_31-860_22218.aspx
http://www.canford.co.uk/commerce/resources/catdetails/5285.pdf
Click to expand...
Hmm, that has the usual foil shield like the Belkin shielded CAT5.
Belkin is one of the more popular brands out here.

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.
 
Joerg wrote:

Hello All,

Does anyone have a link or hint regarding shielded CAT-5 which is as
flexible as the better non-shielded patch cables?
Click to expand...
Did you get my Canford link ?

http://www.canford.co.uk/commerce/category_22218_4556.aspx
http://www.canford.co.uk/commerce/item_31-860_22218.aspx
http://www.canford.co.uk/commerce/resources/catdetails/5285.pdf

That's the stuff you want.

They have an export dept. You can buy it cut by the metre or 500m reel.

Graham
 
On Jun 5, 11:54 am, Joerg <notthisjoerg...@removethispacbell.net>
wrote:
Hello All,

Does anyone have a link or hint regarding shielded CAT-5 which is as
flexible as the better non-shielded patch cables?
Click to expand...
Mainly Ethernet terminations aren't shielded, so there's
no 'ground' connection in the RJ-45 plug. If you go to the
shrounded connectors, the compatible shielded cable is stiff
jacket/foil-shield over (?solid) wires.

Could you ground a braided tube at the chassis and on the
drawer, and just route a stranded CAT5 cable through that?
 
Joerg wrote:

Eeyore wrote:

This appears to be the Canford cable I mentioned.
http://www.canford.co.uk/commerce/item_31-860_22218.aspx
http://www.canford.co.uk/commerce/resources/catdetails/5285.pdf


Hmm, that has the usual foil shield like the Belkin shielded CAT5.
Belkin is one of the more popular brands out here.
Click to expand...
They claim it's their own though, see the pdf file.

Part of the trick is a thinner than usual jacket of high flexibility. My install friend
says it's the bee's kness.

Graham.
 
On Fri, 6 Jun 2008 17:44:04 -0700 (PDT), whit3rd <whit3rd@gmail.com>
wrote:

On Jun 5, 11:54 am, Joerg <notthisjoerg...@removethispacbell.net
wrote:
Hello All,

Does anyone have a link or hint regarding shielded CAT-5 which is as
flexible as the better non-shielded patch cables?

Mainly Ethernet terminations aren't shielded, so there's
no 'ground' connection in the RJ-45 plug. If you go to the
shrounded connectors, the compatible shielded cable is stiff
jacket/foil-shield over (?solid) wires.

Could you ground a braided tube at the chassis and on the
drawer, and just route a stranded CAT5 cable through that?
Click to expand...
I have this joy/frustration with people that beat me at thinking
outside of the box.
 
Eeyore wrote:
Joerg wrote:

Hello All,

Does anyone have a link or hint regarding shielded CAT-5 which is as
flexible as the better non-shielded patch cables?

Did you get my Canford link ?

http://www.canford.co.uk/commerce/category_22218_4556.aspx
http://www.canford.co.uk/commerce/item_31-860_22218.aspx
http://www.canford.co.uk/commerce/resources/catdetails/5285.pdf

That's the stuff you want.

They have an export dept. You can buy it cut by the metre or 500m reel.
Click to expand...

Thanks, I did get the link. Importing is a hassle though and meantime I
found a domestic source for really flexible data cable. So in case
someone else is in the same pickle some day:

http://www.sabcable.com/categoryDetail.php?catID=2

Thanks to all for your suggestions.

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.
 
JosephKK wrote:
On Fri, 6 Jun 2008 17:44:04 -0700 (PDT), whit3rd <whit3rd@gmail.com
wrote:

On Jun 5, 11:54 am, Joerg <notthisjoerg...@removethispacbell.net
wrote:
Hello All,

Does anyone have a link or hint regarding shielded CAT-5 which is as
flexible as the better non-shielded patch cables?
Mainly Ethernet terminations aren't shielded, so there's
no 'ground' connection in the RJ-45 plug. If you go to the
shrounded connectors, the compatible shielded cable is stiff
jacket/foil-shield over (?solid) wires.

Could you ground a braided tube at the chassis and on the
drawer, and just route a stranded CAT5 cable through that?

I have this joy/frustration with people that beat me at thinking
outside of the box.
Click to expand...
That's what they have in the system now. It's a pain in the neck in
production (very complex mechanics) and then there is the concern of
chafing.

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.
 
On Sat, 07 Jun 2008 08:51:39 -0700, Joerg
<notthisjoergsch@removethispacbell.net> wrote:

JosephKK wrote:
On Fri, 6 Jun 2008 17:44:04 -0700 (PDT), whit3rd <whit3rd@gmail.com
wrote:

On Jun 5, 11:54 am, Joerg <notthisjoerg...@removethispacbell.net
wrote:
Hello All,

Does anyone have a link or hint regarding shielded CAT-5 which is as
flexible as the better non-shielded patch cables?
Mainly Ethernet terminations aren't shielded, so there's
no 'ground' connection in the RJ-45 plug. If you go to the
shrounded connectors, the compatible shielded cable is stiff
jacket/foil-shield over (?solid) wires.

Could you ground a braided tube at the chassis and on the
drawer, and just route a stranded CAT5 cable through that?

I have this joy/frustration with people that beat me at thinking
outside of the box.


That's what they have in the system now. It's a pain in the neck in
production (very complex mechanics) and then there is the concern of
chafing.
Click to expand...
Adhesively bond the mesh to the jacket. Select the adhesive
carefully.
 
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