Re: [time-nuts] PRS-10 findings

2007-05-30 Thread SAIDJACK
In a message dated 5/30/2007 13:23:29 Pacific Daylight Time, [EMAIL PROTECTED] writes: >My hp53310 shows the same artifacts if the input frequency is nearly >the reference frequency. If I use the reference as input frequency Hi Henk, weird. I was measuring 1PPS offsets. Using the s

Re: [time-nuts] PRS-10 findings

2007-05-30 Thread Henk ten Pierick
Hi Said, My hp53310 shows the same artifacts if the input frequency is nearly the reference frequency. If I use the reference as input frequency the noise is lower. When I adjust the time/div to more than 2 times the frame flyback time, I can see a disturbance at the fylback interval with

Re: [time-nuts] PRS-10 findings

2007-05-30 Thread SAIDJACK
In a message dated 5/30/2007 05:38:40 Pacific Daylight Time, [EMAIL PROTECTED] writes: >interference from an off-frequency signal. I hadn't bothered to lock >the counter to an external reference, and on measuring a Rubidium >source against its internal oscillator, got a reading about 1.4

Re: [time-nuts] PRS-10 findings

2007-05-30 Thread SAIDJACK
In a message dated 5/30/2007 07:29:36 Pacific Daylight Time, [EMAIL PROTECTED] writes: >A manifestation of the effects of slowly sweeping through a range of >start and stop interpolator values so that the interpolator integral and >and differential non linearities become apparent? >Strict

Re: [time-nuts] PRS-10 findings

2007-05-30 Thread SAIDJACK
Hi Tom, >Can you refresh me on the topic? I didn't see any >PRS10 humps here: >http://www.leapsecond.com/museum/prs10/ We had a discussion about this, and some other folks did see it also. Sometime around June last year or so, I need to dig up my measurements. >Just to get a clear ide

Re: [time-nuts] PRS-10 findings

2007-05-30 Thread SAIDJACK
In a message dated 5/30/2007 09:28:02 Pacific Daylight Time, [EMAIL PROTECTED] writes: tvb wrote: > I've not heard that these counters do some sort of dynamic >self-calibration. > Nor have I seen that sort of periodicity in a 53131 or 53132 counter. >Nor have I. I have several 53131's an

Re: [time-nuts] PRS-10 findings

2007-05-30 Thread Christopher Hoover
tvb wrote: > I've not heard that these counters do some sort of dynamic self-calibration. > Nor have I seen that sort of periodicity in a 53131 or 53132 counter. Nor have I. I have several 53131's and a 53132. The 53132 is always logging data against one of my Cs's and an M12T. -ch _

Re: [time-nuts] PRS-10 findings

2007-05-30 Thread Magnus Danielson
From: "Poul-Henning Kamp" <[EMAIL PROTECTED]> Subject: Re: [time-nuts] PRS-10 findings Date: Wed, 30 May 2007 14:35:37 + Message-ID: <[EMAIL PROTECTED]> > In message <[EMAIL PROTECTED]>, Dr Bruce Griffiths writes: > > >> The HP5370 has a r

Re: [time-nuts] PRS-10 findings

2007-05-30 Thread Magnus Danielson
From: Dr Bruce Griffiths <[EMAIL PROTECTED]> Subject: Re: [time-nuts] PRS-10 findings Date: Thu, 31 May 2007 02:27:09 +1200 Message-ID: <[EMAIL PROTECTED]> > Poul-Henning Kamp wrote: > > In message <[EMAIL PROTECTED]>, Peter Vince writes: > > > > > &

Re: [time-nuts] PRS-10 findings

2007-05-30 Thread Tom Van Baak
> Hello guys, > > some time ago we talked about curious humps in the ADEV of the SRS PRS-10 Rb > at around 20s intervalls. Can you refresh me on the topic? I didn't see any PRS10 humps here: http://www.leapsecond.com/museum/prs10/ > Could this be the counter self-calibrating? This is too reg

Re: [time-nuts] PRS-10 findings

2007-05-30 Thread Poul-Henning Kamp
In message <[EMAIL PROTECTED]>, Dr Bruce Griffiths writes: >> The HP5370 has a rather heavyhanded piece of electronics that >> eliminate this effect with a jitter based approach and as far as I >> have been able to measure, it works. >> >Not quite true the HP5370 has a whole host of anomalies l

Re: [time-nuts] PRS-10 findings

2007-05-30 Thread Dr Bruce Griffiths
Poul-Henning Kamp wrote: > In message <[EMAIL PROTECTED]>, Peter Vince writes: > > >> I have seen something similar with my 53132A. I was checking >> on the delay variation of an amplifier distributing 10 MHz, and >> noticed a regular sinusoidal pattern, about a third of a nanosecond >>

Re: [time-nuts] PRS-10 findings

2007-05-30 Thread Poul-Henning Kamp
In message <[EMAIL PROTECTED]>, Peter Vince writes: > I have seen something similar with my 53132A. I was checking >on the delay variation of an amplifier distributing 10 MHz, and >noticed a regular sinusoidal pattern, about a third of a nanosecond >peak-to-peak, with a period of about 7

Re: [time-nuts] PRS-10 findings

2007-05-30 Thread Peter Vince
Hello Said, I have seen something similar with my 53132A. I was checking on the delay variation of an amplifier distributing 10 MHz, and noticed a regular sinusoidal pattern, about a third of a nanosecond peak-to-peak, with a period of about 70 seconds. This looked like interference from a

[time-nuts] PRS-10 findings

2007-05-30 Thread SAIDJACK
Hello guys, some time ago we talked about curious humps in the ADEV of the SRS PRS-10 Rb at around 20s intervalls. I think I may have more info on that (and as usually that raises more questions): Below is a capture of the phase offset between a PRS10 1PPS output compared to the Jackson