[time-nuts] PRS10 1 PPS Out having random phase jumps

Mark Spencer mark at alignedsolutions.com
Mon Nov 23 21:46:29 UTC 2015


I don't recall ever having this issue with mine.  As a general rule though I seemed to have more success using 5 and 10 MHz reference signals vs 1 pps reference signals with my HP5370's and HP5335's when making Adev measurements of 5 and 10 MHz OCXO's.

Sent from my iPhone

> On Nov 23, 2015, at 12:11 PM, James Robbins <jsrobbins at earthlink.net> wrote:
> 
> Has anyone using the 1 PPS output from a PRS10 rubidium found significant
> random phase jumps?  I'm getting these random phase jumps while using the
> PRS10 as a TI base for ADEV.  I can use the 10 MHz output of the PRS10 to
> feed a T2mini without any similar jumps.  Wondering if it might be heat
> related or other.  Needless to say, such jumps screw up the TI ADEV readings
> and convert the TimeLab readings from the E-12 range to E-1 or so.  Thanks.
> 
> 
> 
> Jim Robbins
> 
> N1JR
> 
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