[time-nuts] AC Connector On HP 5061B

Bruce Griffiths bruce.griffiths at xtra.co.nz
Sat Oct 4 05:09:31 UTC 2008


Mike Monett wrote:
>   Bruce Griffiths <bruce.griffiths at xtra.co.nz> wrote:
>
>   >Tom
>
>   > Another example  of a case where the electrical length of  a cable
>   > can be important is in precision frequency distribution systems.
>
>   > Trimming the cable to the right length (one way  propagation delay
>   > equal to  an  odd  multiple of half  the  signal  period)  for the
>   > frequency in use minimises the effect of load and source mismatch.
>
>   >Bruce
>
>   Bruce,
>
>   Why would it make any difference? It would seem that as long  as the
>   cable and connectors are stable, any reflections should be constant,
>   and the  signal amplitude and phase should remain  constant.  So the
>   zero crossings at the receiver end should not change.
>
>   Where did I go wrong?
>
>   Thanks,
>
>   Mike Monett
>
>   
Mike

see:
http://ad.usno.navy.mil/edboard/070518p.pdf

Bruce



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