[time-nuts] SiLabs
Brooke Clarke
brooke at pacific.net
Fri Aug 11 14:29:59 EDT 2006
Hi Randy:
Would you elaborate on how TRAIM works. I thought that it acted like a
switch and either allowed the 1 PPS output or turned it off.
But you seem to be saying that it can remove a bad satellite from the
solution and maintain the 1 PPS output. Is that the case?
Have Fun,
Brooke Clarke
--
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w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml
http://www.precisionclock.com
Randy Warner wrote:
>Glenn,
>
>You're right. I would expect quite a bit of jitter. My comment about
>USB-Serial converters probably should not be on a "timing" news list.
>However, the 1PPS coming in on the DCD line of a standard serial port
>jitters too, but is still plenty accurate for "loose" timing systems
>like NTP servers who are only looking for millisecond type resolution.
>
>I think one of the main reasons we still sell a lot of timing receivers
>to these customers is really because of the TRAIM function. They really
>don't need ns type accuracy, but they DO want the receiver to alert them
>to large anomalies due to sick satellites, and to automatically remove
>the satellites from the solution.
>
>Randy
>
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