[time-nuts] EZGPIB & delay triggers

[Ulrich Bangert]

Bill,

> I am using the 5370 for time interval measurements to compare zero 
> crossings from the two oscillators.
> I want to see what the stability is over twenty four hours.

I have currently not the time to fully explain, but the measurements you are
planning involve much more than just to connect the two sources to start and
stop of the counter and up we go. Perhaps someone else of the group wants to
explain to you.

73s and my best regards
Ulrich, DF6JB 

> -----Ursprungliche Nachricht-----
> Von: time-nuts-bounces at febo.com 
> [mailto:time-nuts-bounces at febo.com] Im Auftrag von Bill Janssen
> Gesendet: Montag, 13. Juli 2009 17:34
> An: Discussion of precise time and frequency measurement
> Betreff: Re: [time-nuts] EZGPIB & delay triggers
> 
> 
> Ulrich Bangert wrote:
> > Bill,
> >
> > there are two "sleep" commands:
> >
> > 1) Procedure EZGPIB_TimeSleep(HowLong:Double)
> >
> > 2) Procedure EZGPIB_TimeWaitForMultipleOf(Seconds:LongWord)
> >
> > where Howlong is in seconds and starts immediately after call. The 
> > second one is for you if you want to keep something synchronized to 
> > the computer's clock. EZGPIB_TimeWaitForMultipleOf(10) will 
> sleep up 
> > to second 10, 20, 30, 50, 0 whatever is the closest. 
> > EZGPIB_TimeWaitForMultipleOf(60) will wait up to the start 
> of the next 
> > minute.
> >
> >   
> >> I am trying to use EZGPIB with a HP 5370A and I want to trigger a
> >> reading on a 10 to 30 second interval.
> >> I want the use EZGPIB to do long term comparisons of various 
> >> oscillators, I am not interested (at this time)
> >> on jitter less than tau < 1 seconds or so
> >>     
> >
> > I fear, that THIS not only a matter of sleeping! Please 
> explain your 
> > experiment more in detail. Are you doing frequency or phase 
> > measurements?
> >
> > 73s de Ulrich, DF6JB
> >
> >   
> I am using the 5370 for time interval measurements to compare zero 
> crossings from the two oscillators.
> I want to see what the stability is over twenty four hours. I 
> have two 
> GPSDO's and a rubidium and three
> "good" quartz oscillators. I suspect that the Z3801 is 
> drifting due to 
> temperature changes
> 
> I want to sample the phase difference at a known rate so that 
> I can plot 
> the differences with out getting
> a data file thats too big..
> 
> 
> >
> >   
> >> -----Ursprungliche Nachricht-----
> >> Von: time-nuts-bounces at febo.com
> >> [mailto:time-nuts-bounces at febo.com] Im Auftrag von Bill
> >> Gesendet: Montag, 13. Juli 2009 04:31
> >> An: time-nuts
> >> Betreff: [time-nuts] EZGPIB & delay triggers
> >>
> >>
> >> I am trying to use EZGPIB with a HP 5370A and I want to trigger a
> >> reading on a 10 to 30 second interval.
> >> I want the use EZGPIB to do long term comparisons of various 
> >> oscillators, I am not interested (at this time)
> >> on jitter less than tau < 1 seconds or so
> >>
> >> My question is what is the PASCAL code to delay between
> >> readings. I am 
> >> running Windows XP if
> >> that makes a difference.
> >>
> >> I don't have a book (yet) on PASCAL and I am not a 
> programmer. I have
> >> EZGPIB displaying readings but at
> >> what seems to be a random rate
> >>
> >> Thanks
> >> Bill K7NOM
> >>
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> >>     
> >
> >
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> >   
> 
> 
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