[time-nuts] AC Connector On HP 5061B
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:
> > 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.
> 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?
> Mike Monett
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