Cable needed: 4 twisted pairs, individually shielded with ov

[Mike Hubert]

Hi,

I have an application needing a cable with the following rough
requirements:

-4 twisted pairs, individually shielded (braided). Ideally standed 28AWG,
but we could do down to 26 or even 24AWG. Solid conductors could also be
acceptable. A foil shield could do as well.
-outer shield, ideally braided, but foil could be ok.
-outside diameter (O.D.) of the cable 5mm maximum
-cable must be somewhat flexible

The troublesome requirement here is the O.D. of <= 5mm: everything out
there seems to be 7mm or more!!

I need something quickly, and cannot afford to wait for someone to custom
manufacture this for me. Even if I did, there is the additional problem of
min orders of 1000-5000ft, I only need something like 100ft.

If anyone has anything to suggest, I'd love to hear from you, I am getting
desperate! Drop me a note at mph@xiphos.ca


Regards,

Mike Hubert
Xiphos Technologies Inc.
www.xiphos.ca

 

[Lizard Blizzard]

Mike Hubert wrote:

Hi,

I have an application needing a cable with the following rough
requirements:

-4 twisted pairs, individually shielded (braided). Ideally standed 28AWG,
but we could do down to 26 or even 24AWG. Solid conductors could also be
acceptable. A foil shield could do as well.
-outer shield, ideally braided, but foil could be ok.
-outside diameter (O.D.) of the cable 5mm maximum
-cable must be somewhat flexible

The troublesome requirement here is the O.D. of <= 5mm: everything out
there seems to be 7mm or more!!

I need something quickly, and cannot afford to wait for someone to custom
manufacture this for me. Even if I did, there is the additional problem of
min orders of 1000-5000ft, I only need something like 100ft.

If anyone has anything to suggest, I'd love to hear from you, I am getting
desperate! Drop me a note at mph@xiphos.ca

I think your expectations are unreasonable. Cost, put-ups (length of
the reel), and the need for a cable for which there is very little
demand, all come together to limit your choices and demand you make some
of the compromises you seemed unwilling to make. So you will have to
take what you can get, for what the market is willing to sell it for.
Sorry. Try www.belden.com.

Regards,

Mike Hubert
Xiphos Technologies Inc.
www.xiphos.ca

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[Cameron Dorrough]

"Mike Hubert" <mph@xiphos.ca> wrote in message
news:Xns940C86B4F5B72mphxiphosca@142.77.1.194...

Hi,

I have an application needing a cable with the following rough
requirements:

-4 twisted pairs, individually shielded (braided). Ideally standed 28AWG,
but we could do down to 26 or even 24AWG. Solid conductors could also be
acceptable. A foil shield could do as well.
-outer shield, ideally braided, but foil could be ok.
-outside diameter (O.D.) of the cable 5mm maximum
-cable must be somewhat flexible

If you are in a hurry, why don't you just buy a roll of Cat5/6 LAN cable
from your local computer store??

That's 4-pair 24-gauge shielded twisted pair and < 5mm OD (4.83mm to be
exact)...

Cameron

 

[Watson A.Name - "Watt Sun]

In article <blt5nn$5da$1@merki.connect.com.au>,
cdorrough@spamspamgoawayrmna.com.au mentioned...

"Mike Hubert" <mph@xiphos.ca> wrote in message
news:Xns940C86B4F5B72mphxiphosca@142.77.1.194...
Hi,

I have an application needing a cable with the following rough
requirements:

-4 twisted pairs, individually shielded (braided). Ideally standed 28AWG,
but we could do down to 26 or even 24AWG. Solid conductors could also be
acceptable. A foil shield could do as well.
-outer shield, ideally braided, but foil could be ok.
-outside diameter (O.D.) of the cable 5mm maximum
-cable must be somewhat flexible

If you are in a hurry, why don't you just buy a roll of Cat5/6 LAN cable
from your local computer store??

That's 4-pair 24-gauge shielded twisted pair and < 5mm OD (4.83mm to be
exact)...

Almost all Cat5 cable is unshielded. Post your questions about this
to comp.dcom.cabling.

Cameron

--
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[John Larkin]

On Mon, 06 Oct 2003 17:16:20 GMT, Mike Hubert <mph@xiphos.ca> wrote:

Hi,

I have an application needing a cable with the following rough
requirements:

-4 twisted pairs, individually shielded (braided). Ideally standed 28AWG,
but we could do down to 26 or even 24AWG. Solid conductors could also be
acceptable. A foil shield could do as well.
-outer shield, ideally braided, but foil could be ok.
-outside diameter (O.D.) of the cable 5mm maximum
-cable must be somewhat flexible

The troublesome requirement here is the O.D. of <= 5mm: everything out
there seems to be 7mm or more!!

I need something quickly, and cannot afford to wait for someone to custom
manufacture this for me. Even if I did, there is the additional problem of
min orders of 1000-5000ft, I only need something like 100ft.

If anyone has anything to suggest, I'd love to hear from you, I am getting
desperate! Drop me a note at mph@xiphos.ca


Regards,

Mike Hubert
Xiphos Technologies Inc.
www.xiphos.ca

One of the best deals around is stock SCSI-II cables and connectors.
You can get a 25-pair cable for about $10-ish, and the connectors are
very nice and are cheap. Pairs are not individually shielded, but you
can just use 4 selected pairs and ground the rest, and get pretty good
isolation that way.

Sadly, the cables tend to be about 7 mm diameter.

What's the application?


John

 

[Walter Harley]

"Cameron Dorrough" <cdorrough@spamspamgoawayrmna.com.au> wrote in message
news:blt5nn$5da$1@merki.connect.com.au...

"Mike Hubert" <mph@xiphos.ca> wrote in message
news:Xns940C86B4F5B72mphxiphosca@142.77.1.194...
Hi,

I have an application needing a cable with the following rough
requirements:

-4 twisted pairs, individually shielded (braided). [...]

If you are in a hurry, why don't you just buy a roll of Cat5/6 LAN cable
from your local computer store??

Because, he asked for "individually shielded". The pairs in CatX are not
individually shielded, even if the cable is overall shielded.

Personally I'm with Lizard, I've never seen anything that small... but if it
exists, it's probably made by Mogami. Unfortunately, their web site is
rather weak, and they're Japanese, so it's hard to actually tell what they
sell or where to get it. Some creative Googling can help.

Mike, can you tell us more about your application? Maybe there's some
creative alternative possible.

 

[Cameron Dorrough]

"Watson A.Name - Watt Sun" <alondra101@hotmail.com> wrote in message
news:MPG.19ec59ae6c34456098977b@news.dslextreme.com...

In article <blt5nn$5da$1@merki.connect.com.au>,
cdorrough@spamspamgoawayrmna.com.au mentioned...
"Mike Hubert" <mph@xiphos.ca> wrote in message
news:Xns940C86B4F5B72mphxiphosca@142.77.1.194...
Hi,

I have an application needing a cable with the following rough
requirements:

-4 twisted pairs, individually shielded (braided). Ideally standed
28AWG,
but we could do down to 26 or even 24AWG. Solid conductors could also
be
acceptable. A foil shield could do as well.
-outer shield, ideally braided, but foil could be ok.
-outside diameter (O.D.) of the cable 5mm maximum
-cable must be somewhat flexible

If you are in a hurry, why don't you just buy a roll of Cat5/6 LAN cable
from your local computer store??

That's 4-pair 24-gauge shielded twisted pair and < 5mm OD (4.83mm to be
exact)...

Almost all Cat5 cable is unshielded. Post your questions about this
to comp.dcom.cabling.

Shielded twisted-pair (STP) exists - we use it all the time for industrial
applications. How do you think I was able to state the OD? Guess?? :-(

True, the pairs on this size are not individually shielded - this is
precisely why I stated "If you are in a hurry". Small O.D.
individually-shielded cables (even something like a Belden 9903 10Base5 LAN
cable) will likely only be available on back order.

I have never seen anything individually-shielded less than 5mm O.D. Less
than 7mm, yes, but not less than 5..

HTH,
Cameron

 

[Ian Buckner]

"Cameron Dorrough" <cdorrough@spamspamgoawayrmna.com.au> wrote in
message news:blvhek$16h$1@merki.connect.com.au...

"Watson A.Name - Watt Sun" <alondra101@hotmail.com> wrote in message
news:MPG.19ec59ae6c34456098977b@news.dslextreme.com...
In article <blt5nn$5da$1@merki.connect.com.au>,
cdorrough@spamspamgoawayrmna.com.au mentioned...
"Mike Hubert" <mph@xiphos.ca> wrote in message
news:Xns940C86B4F5B72mphxiphosca@142.77.1.194...
Hi,

I have an application needing a cable with the following rough
requirements:

-4 twisted pairs, individually shielded (braided). Ideally
standed
28AWG,
but we could do down to 26 or even 24AWG. Solid conductors
could also
be
acceptable. A foil shield could do as well.
-outer shield, ideally braided, but foil could be ok.
-outside diameter (O.D.) of the cable 5mm maximum
-cable must be somewhat flexible

If you are in a hurry, why don't you just buy a roll of Cat5/6
LAN cable
from your local computer store??

That's 4-pair 24-gauge shielded twisted pair and < 5mm OD
(4.83mm to be
exact)...

Almost all Cat5 cable is unshielded. Post your questions about
this
to comp.dcom.cabling.

Shielded twisted-pair (STP) exists - we use it all the time for
industrial
applications. How do you think I was able to state the OD? Guess??
:-(

True, the pairs on this size are not individually shielded - this is
precisely why I stated "If you are in a hurry". Small O.D.
individually-shielded cables (even something like a Belden 9903
10Base5 LAN
cable) will likely only be available on back order.

I have never seen anything individually-shielded less than 5mm O.D.
Less
than 7mm, yes, but not less than 5..

HTH,
Cameron



Look for LVDS interconnect cables. Amp also do coaxial ribbonised

multiway cables
with each coax 0.64mm diameter with their Mictor connectors. Not
twisted pair,
but shielded and controlled impedance.
(You may not like the price ;-(

Regards
Ian

 

[Watson A.Name - "Watt Sun]

In article <1065616754.842600@cswreg.cos.agilent.com>,
Ian_Buckner@agilent.com mentioned...

Small O.D.
individually-shielded cables (even something like a Belden 9903
10Base5 LAN
cable) will likely only be available on back order.

The 10Base5 spec calls for the thick yellow 50 ohm coax, which has had
very little use for more than a decade since 10BaseT came out.


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that will give you a choice and save you money(up to half).
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[Roger Hamlett]

"Cameron Dorrough" <cdorrough@spamspamgoawayrmna.com.au> wrote in message
news:blvhek$16h$1@merki.connect.com.au...

"Watson A.Name - Watt Sun" <alondra101@hotmail.com> wrote in message
news:MPG.19ec59ae6c34456098977b@news.dslextreme.com...
In article <blt5nn$5da$1@merki.connect.com.au>,
cdorrough@spamspamgoawayrmna.com.au mentioned...
"Mike Hubert" <mph@xiphos.ca> wrote in message
news:Xns940C86B4F5B72mphxiphosca@142.77.1.194...
Hi,

I have an application needing a cable with the following rough
requirements:

-4 twisted pairs, individually shielded (braided). Ideally standed
28AWG,
but we could do down to 26 or even 24AWG. Solid conductors could
also
be
acceptable. A foil shield could do as well.
-outer shield, ideally braided, but foil could be ok.
-outside diameter (O.D.) of the cable 5mm maximum
-cable must be somewhat flexible

If you are in a hurry, why don't you just buy a roll of Cat5/6 LAN
cable
from your local computer store??

That's 4-pair 24-gauge shielded twisted pair and < 5mm OD (4.83mm to
be
exact)...

Almost all Cat5 cable is unshielded. Post your questions about this
to comp.dcom.cabling.

Shielded twisted-pair (STP) exists - we use it all the time for industrial
applications. How do you think I was able to state the OD? Guess?? :-(

True, the pairs on this size are not individually shielded - this is
precisely why I stated "If you are in a hurry". Small O.D.
individually-shielded cables (even something like a Belden 9903 10Base5
LAN
cable) will likely only be available on back order.

I have never seen anything individually-shielded less than 5mm O.D. Less
than 7mm, yes, but not less than 5..
Generally, yes.

I just had a look at the Van Damme catalogue, and their 'studio grade'
microphone cables are available with four individually shielded pairs, and a
single foil braid outside, but the diameter is 7.5mm. Belden do their 'high
flex' multi-pair snake cables, with again four individually shielded pairs,
and an overall braid, but this is 8.43mm OD, for four pairs. The thinnest I
found, was double screened 'telecom' cable. This has single cores, rather
than flex (reduced it's suitability for a flexible application), and has a
foil screen round each pair, with a copper link wire and a copper braid
externally. The 'four pair' version of this, just scrapes over the '5mm'
specification (5.5mm nominal OD).
Micro diameter cables smaller than this do exist, but a lot are 'special
order' (not off the shelf items). The smallest diameter 'multi-pair' cable,
with individually shielded pairs like this I have seen, was only about 4mm
OD, and was made by 'Nexans', but was about Ł500 a roll (it was used in the
interconnections in an ECG)!...
I think an email to Nexans, is probably the place to start. The 'part' you
want to talk to, is the area dealing with 'microcables', and they do do a
version that is the sort of diameter required, but whether it is an 'off the
shelf' item, I do not know.

Best Wishes