[GPS_Standard] Montrol Clear Current Stats button bug or feature ?

[Dimitri.p]

I disabled the FLL following Bert's suggestion from another thread
"You should try something else. Turn off the FLL. Do manual computing 
of the average offset and see whether it correlates with the 
described behavior. This will isolate it to the counter behavior."
Which is what I did.
The manual calculation is different from what Montrol displays (the 7 
sample example)
So here we are.

Sometimes rabbit holes are connected!


Dimitri


At 11:54 AM 11/8/2015, you wrote:
>Dimitri
>
>The problem is the FLL is UNLOCKED!  The
>readings from Montrol are meaningless
>until the Frequency Locked loop is
>Locked up.  You must wait until that
>happens.  In fact you have it "disabled"
>in the Parameters (Grey) Panel.
>Attached is a screenshot of mine.....
>
>Pete
>ZL2iK
>
>
>-----Original Message-----
>From: Dimitri.p
>[mailto:dimitri at dotp.com]
>Sent: Monday, November 9, 2015 02:59
>To: gps_standard at mailman.qth.net
>Cc: Peter Mulhare
>Subject: RE: [GPS_Standard] Montrol
>Clear Current Stats button bug or
>feature ?
>
>All I am talking about is the Current
>stats- the yellow section and whether or
>not it "resets" when hitting the "Clear
>Current Stats"
>button. It appears that it doesn't,
>unless Montrol is restarted.
>
>Here is a screenshot of the incorrect
>calculation on 7 samples
>
>Looking at  7 samples in the e-08 and
>e-09 range,  an average in the
>e-04 looks wrong without even working
>the numbers :)
>
>
>and here is the manual version with the
>worked numbers:
>9999999.87500000000000000
>-1.25000000000000E-8
>9999999.62500000000000000
>-3.75000000000000E-8
>10000000.31250000000000000
>3.12500000000001E-8
>10000000.06250000000000000
>6.25000000000001E-9
>9999999.81250000000000000
>-1.87500000000000E-8
>9999999.87500000000000000
>-1.25000000000000E-8
>10000000.12500000000000000
>1.25000000000000E-8
>Number of Samples:          7
>Avg Freq Offset: -4.46428563445807E-9
>Min:             -3.75000000000000E-8
>Max:              3.12500000000001E-8
>
>
>Dimitri
>
>
>At 01:10 AM 11/8/2015, you wrote:
> >Dimitri
> >
> >I just tried it on my Montrol to
> >recheck, and No it does not clear All
> >Stats (as a restart would) but the
> >current cycle only, as I have always
> >understood..  Mine was sitting on
> >1.83e-10, and after clearing it came
> >back 1.87e-08, however in the 16 cycles
> >since I cleared it, now it shows
> >3.29-10.  On one of the earlier cycles
> >it actually said 0 offset, I have only
> >ever seen that a few times.
> >
> >To reset, sort of like a restart, you
> >can clear the Accumulated Stats, but
> >that does not clear the previous cycle
> >or the Current cycle, but you would
>lose
> >all the historical data/Stats.  It
>would
> >also clear the Number of Samples
> >counter, but in MONTROL ONLY.  The
>GPSDO
> >starts a fresh Sample Count ever time
>it
> >starts another Sample series.  The
> >actual total number comes from the (S)
> >parameter in the Grey Parameter Panel.
> >
> >Neither Clear buttons have an effect on
> >the state of what is going on in the
> >GPSDO itself, the setup in the grey
> >Parameter panel of Montrol controls how
> >the GPSDO works.
> >
> >Pete
> >ZL2iK
>