🚀 go-pugleaf

In Article<sonicpty-1504962241210001@ppp140-sf2.sirius.com>, 
<sonicpty@sirius.com> writes:
 
>    I want to find a way to measure the characteristic impedance of SCSI
> cabling, preferably using readily-available or inexpensively fabricated
> test equipment.
>    I tried measuring SQRT(Lseries/Cshunt) using a vintage GenRad 
impedance
> bridge (@ 1kHz) and got reasonable values of Cshunt, but the bridge 
lacked
> low inductance resolution and could not produce meaningful numbers for
> Lseries.
>    Hitting the cable with some RF frequency and using an SWR meter has
> been contemplated, but i am concerned about the effects of the 
connectors,
> the need for knowing the exact length, and my lack of an SWR meter.
> 
>    Ideas and suggestions please?
> 
> TIA,
> ))Sonic((

Knowing the capacitance per unit length should be sufficient.  Equations
for transmission line impedance can be found in most RF textbooks, and in
the ARRL Handbook.

Rick Kerman <rkerman@brutus.bright.net>