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[time-freq] RefLock II behavior

Owen, Michael Michael.Owen at Sensis.com
Wed Jun 21 14:45:43 UTC 2006


John -

Were you able to fix it?

MRO

------
Michael R. Owen, Ph.D.
Senior System Engineer
Sensis Corporation
(315) 634-3066 



|-----Original Message-----
|From: time-freq-bounces at lists.tapr.org 
|[mailto:time-freq-bounces at lists.tapr.org] On Behalf Of John 
|Ackermann N8UR
|Sent: Tuesday, June 20, 2006 8:25 PM
|To: TAPR time and frequency projects
|Subject: Re: [time-freq] RefLock II behavior
|
|
|This looks similar to, but is orders of magnitude larger than, what I 
|saw when using the Reflock II to control a 10MHz TCXO from GPS.
|
|We concluded what was happening there was that the Reflock D/A was 
|dithering between two discrete steps, causing the noisy state for a 
|while, then the loop would move for a while to a stable state 
|where the 
|voltage wasn't dithering, then it would drift off again.  Not sure if 
|you're seeing a magnified version of the same thing.
|
|John
|




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