The new boost converter is working great for external DC power input.
Yesterday I put the Z3801A guts back into the carcass, after being out
of commission since October when I started the latest round of additions
and changes. The bench supply I've been using doesn't have enough oomph
to do col
Tom Van Baak writes:
> To determine the noise floor of a counter it's best to use different
> sources, independent in frequency and also independent in phase. That
> rules out dividers or multipliers. The phase needs to "sweep" across a
> wide range.
A neat way to do this:
Clock
Erik,
See some plots of testing a 53132A counter in time interval mode:
http://leapsecond.com/pages/53132/
Yes, using stdev (rms) is ok. You can also use ADEV and expect to see a
line with slope of -1; the noise of the counter is the value at tau 0
[*]. You can also use TDEV and it should be
Hi
First off, yes, standard deviation is a pretty good way to look at what a
counter
is doing. Reducing the answer to time ( = picoseconds ) is usually the easy way
to look at the data.
Next up, counters have a *lot* of things that impact what they do. The slew rate
of the input signal is a big
For some project I'm trying to establish the short term accuracy of a
frequency counter versus the gate time.
As using the Allan Deviation for this type of measurement did lead to
extensive discussion over the validity of using ADEV for measuring the
short term performance of a counter I tried to
I work in the distribution grid protection equipment business, and our
products include measurement capability up to the 16th harmonic for both
the voltage and current measurements made on the line. For classic grid
protection primarily the fundamental and second harmonic are used, but the
higher
