[time-nuts] Use of Austron 2100F "Phase Corrected Output"

Stanley Reynolds stanley_reynolds at yahoo.com
Tue Jul 15 10:30:22 EDT 2008


The strength of the station seems to effect the size of the jumps. I switched from 7980 Master to the Grangeville, LA secondary ( a stronger signal here) and the jumps are much less with the same reference indicating high 8-5 E11 most of the time vs E10 before, same default time constant.



----- Original Message ----
From: Stanley Reynolds <stanley_reynolds at yahoo.com>
To: Discussion of precise time and frequency measurement <time-nuts at febo.com>
Sent: Wednesday, July 9, 2008 9:38:11 AM
Subject: Re: [time-nuts] Use of Austron 2100F "Phase Corrected Output"

As measured with a HP-5334A and GPS DO as reference:
The phase corrected output does jump around a bit most of the time  (+- < 1 Hz but > .2 Hz) and on occasion (< 100 Hz > 50 Hz). A 100 sample average looks much better but still need logic to throw out the big variations and average more samples. 
Stanley



----- Original Message ----
From: Stanley Reynolds <stanley_reynolds at yahoo.com>
To: Discussion of precise time and frequency measurement <time-nuts at febo.com>
Sent: Tuesday, July 1, 2008 3:05:01 PM
Subject: Re: [time-nuts] Use of Austron 2100F "Phase Corrected Output"

I would like to know as well.
My experiment in the thread "Calibrating the Lucent RFG-M-XO Efratom 10MHz OCXO Oscillator w/ EFC" using the phase corrected output has failed twice, not sure of the reason could be a problem with my lack of knowledge abt the Lucent error correcting oscillator or the 2100F.  It takes > 10 hours for it to fail think this could be related to the rate the Austron updates. The chart output is also available to steer the disciplined oscillator but with my unit this output jumps around quite a bit. Either output could be processed / filtered to slow the skew.
Stanley 



----- Original Message ----
From: Jim Robbins <jsrobbins at earthlink.net>
To: time-nuts at febo.com
Sent: Sunday, June 29, 2008 9:16:25 PM
Subject: [time-nuts] Use of Austron 2100F "Phase Corrected Output"

Hi all,

I believe I read that it was a mistake to use the "Phase Corrected Output" 10 MHz signal from the 2100F as the time base source for other equipment?  Something about the corrections being in steps.  Has anyone else had any experience with this?  If so, what is the problem with the output?  Thanks.

Jim Robbins,
N1JR
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