[SI-LIST] Re: VNA and characterization of long cables
- From: Mark Filipov <markfilipov81@xxxxxxxxx>
- To: a.ingraham@xxxxxxxx
- Date: Tue, 24 Apr 2012 20:15:17 +0200
That's great question Andy!
Yes do we need to have a low starting frequency or do we need
frequency spacing that is higher then 10MHz.
Because on the VNA I'm using, I can use 16 000 points, and that VNA
goes up to 26GHz, in that case it can surely measure cables longer
then 10m!
Best regards, Mark
2012/4/24, A. Ingraham <a.ingraham@xxxxxxxx>:
>> ... Alternately
>> you can take multiple network analyzers, each covering its own frequency
>> range, and you can go down to a few Hz in frequency if you wish. ...
>
> Is that sufficient? Do you only need a low starting frequency, or
> doesn't the frequency spacing (even up at the higher end of the sweep)
> need to be small enough to avoid phase ambiguity?
>
> Regards,
> Andy
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