[SI-LIST] how far/fast can M27500 S(T?)P cable be pushed to support differential signaling?

From: "Nieznanski, John A - GS" <john.nieznanski@xxxxxxxxxxxxx>
To: "si-list@xxxxxxxxxxxxx" <si-list@xxxxxxxxxxxxx>
Date: Wed, 6 Feb 2013 21:36:38 +0000

Hello SI-Listers,

Has anyone measured, tested, characterized or had success with M27500 S(T?)P 
cable to support various differential signaling applications? I referenced this 
as S(T?)P cable because the twin conductors may not necessarily be twisted.  
I'm interested in any and all SI related cable parameters to support 
differential signaling for a range of applications. Items of interest include: 
differential characteristic impedance, dielectric losses, skin effect losses, 
velocity of propagation, parameter tolerances, or any other observed 
limitations. I don't have any samples available to characterize or any SI 
related test data and will likely need to do this independently. Since these SI 
parameters are not part of the M27500 spec, they could easily vary by 
manufacturer, date code, lot code, etc. For starters, any data, past history or 
experience is better than nothing. The individual signal wires are 24AWG and 
are built to MIL-DTL-22759/33. My best guess today is that the individual 
signal conductor insulation is XETFE, but not necessarily. I don't have any 
other details at this time.

Thanks and regards,

John Nieznanski


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[SI-LIST] how far/fast can M27500 S(T?)P cable be pushed to support differential signaling?

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