On 03/11/2012 09:09 AM, Frank Stellmach wrote:
Hello,
Does anybody know details about the time interpolator in the 53230A? I
did not find service manuals online containing the 'Theory of Operation'.
The 5370 interpolator obviously was well-respected for its high
linearity and low jitter, based upon the dual-vernier digital
interpolator, but other T.I. counters containing analogous
capacitor-integrators often suffer from non-linearities and higher jitter.
The analogue capacitor-integrators have been made with better
non-linearity and lower jitter since, so your statement regarding them
is misleading. Check out the Wavecrest DTS series for instance.
Built-in calibration has been used to increase linearity, but also the
analog design has been designed for it.
There is a number of other approaches to improved resolution, jitter,
linearity or just implementation simplicity that has become popular as
of late.
As agilent obviously does not manufacture the 10811 OCXO anymore, what
do they use instead, and from which supplier?
There are many choices, but do not expect them to match up to the 10811.
Cheers,
Magnus
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