[time-nuts] Trimble Resolution SMT - good/bad/indifferent?

[SAIDJACK at aol.com]

Hi guys,
 
here is some data from the Trimble Resolution-SMT connected to the SAASM  
1PPS input of our CSAC GPSDO. It ran overnight, and I am showing the data 
after  the unit settled down and went into position hold mode.
 
Plotter shows standard deviation of about 7.1ns on the raw data (yellow  
trace) and peaks of about +/-18ns. The blue trace is the result of a short  
low-pass filter on the data with about 100s time constant or so.
 
The MADEV shows 1E-08 at 1 second, with a pretty much straight line down to 
 almost 1E-013 at 10K seconds.
 
The data-set is in nanoseconds, and it was not normalized, so the numbers  
shown in plotter are also in nanoseconds, and must be interpreted as such.
 
The CSAC GPSDO shows no holdover during this testing, so the GPS did not  
miss more than 60 seconds worth of 1PPS pulses at any time.
 
This data is without sawtooth correction applied, so assuming that sawtooth 
 correction will improve the numbers, this is not too bad.
 
bye,
Said

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