RG-174 type coax cable with foil and braid shield ?

[Steve Parus]

Looking for a thin flexible shielded cable with capability of BNC
connector termination to be used at DC and low (< 100 Hz) frequencies
for low noise signal measurement. Assuming that addition of a foil
shield to the standard ~90% braid coverage RG-174 cable would help, is
there a foil shield version of that cable ?

Steve

 

[William P.N. Smith]

Steve Parus <nospam.sparus@umich.edu> wrote:

Looking for a thin flexible shielded cable with capability of BNC
connector termination to be used at DC and low (< 100 Hz) frequencies
for low noise signal measurement. Assuming that addition of a foil
shield to the standard ~90% braid coverage RG-174 cable would help, is
there a foil shield version of that cable ?

Yeah, I've used it before, and it's a real pain to get the shield off!
Can't remember the number off the top of my head, but try the Belden
catalog, maybe under "low triboelectric noise" (or was that a
different problem?)

--
William Smith
ComputerSmiths Consulting, Inc. www.compusmiths.com

 

[Walter Harley]

<William P.N. Smith> wrote in message
news:fnbtvv4t74itceeum350gb1ppqj4a3rk7l@4ax.com...

Steve Parus <nospam.sparus@umich.edu> wrote:
Looking for a thin flexible shielded cable with capability of BNC
connector termination to be used at DC and low (< 100 Hz) frequencies
for low noise signal measurement. Assuming that addition of a foil
shield to the standard ~90% braid coverage RG-174 cable would help, is
there a foil shield version of that cable ?

Yeah, I've used it before, and it's a real pain to get the shield off!
Can't remember the number off the top of my head, but try the Belden
catalog, maybe under "low triboelectric noise" (or was that a
different problem?)

Triboelectric noise results when electric charges trapped in the insulation
move relative to the center conductor, thus causing a varying electrical
field and inducing current flow in the center conductor. This is a problem
in high-impedance low-level applications such as electric guitar cables. It
has nothing to do with shielding against external interference, though if
the OP's application involves taking measurements while the cable is being
flexed or vibrated it could be relevant.