[time-nuts] 5070B once more....

Tom Van Baak tvb at LeapSecond.com
Sat May 30 19:44:25 UTC 2009


>>1) are you comparing two relatively stable 1pps sources, or
>>
>>If (1), then any time interval counter will work for you. There
>>is no issue of "dead time" or "continuous" measurement. You
>>can calculate ADEV directly from the raw output of the 5370,
>>because it is giving you a periodic series of time interval (aka
>>phase difference) measurements.
> 
> ... as long as you remember to use TI+/- mode.

For stuff like this I use plain old TI mode and just set the
UUT 1pps to lag the reference 1pps by a fraction of a
second, or maybe even just a couple of microseconds.

That way you get a small positive time interval reading
every second.

/tvb




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