Re: [time-nuts] Correcting jitter on the 1 PPS signal from a GPS receiver.

2014-09-13 Thread Bob Camp
Hi Where are you getting the “15 ns accuracy” number from? When I look at the Trimble spec’s they have a number of errors described (like sawtooth) that are larger than 15 ns. Bob On Sep 13, 2014, at 10:41 AM, Peter Reilley wrote: > I have 2 Trimble Resolution T receivers and I have compared

Re: [time-nuts] Correcting jitter on the 1 PPS signal from a GPS receiver.

2014-09-13 Thread Chris Albertson
On Sat, Sep 13, 2014 at 1:33 PM, Bob Camp wrote: > Hi > > Have they both completed a survey and does the survey make sense? Are all of the cables the same length? That includes the cables from antenna to receiver and the cable carrying the 1PPS from the receiver to where you are measuring. An

Re: [time-nuts] Correcting jitter on the 1 PPS signal from a GPS receiver.

2014-09-13 Thread Bob Camp
Hi Have they both completed a survey and does the survey make sense? Bob On Sep 13, 2014, at 10:41 AM, Peter Reilley wrote: > I have 2 Trimble Resolution T receivers and I have compared the 1 PPS signal > between the 2 units. They are spec'ed at 15 nS accuracy.I am seeing > about > 80 nS

[time-nuts] Correcting jitter on the 1 PPS signal from a GPS receiver.

2014-09-13 Thread Peter Reilley
I have 2 Trimble Resolution T receivers and I have compared the 1 PPS signal between the 2 units. They are spec'ed at 15 nS accuracy.I am seeing about 80 nS of jitter between the two. This is with about 6 satellites in view. I was thinking about ways to improve this. Since this is a sta