[time-nuts] LPRO-101 BITE (~lock) Signal Always Low

iovane at inwind.it iovane at inwind.it
Tue Mar 22 17:45:34 EDT 2016


>From: Hal Murray <hmurray at megapathdsl.net>
>
>iovane wrote:
>> are you sure your LPRO actually locks? You say you have measured 10.000 MHz
>> but you don't mention the other decimals. Some years ago I characterized
>> some  LPROs of mine, and from my notebook I take that, on one sample for
>> instance,  prior to lock the frequency swept up and down between (about)
>> 9.999860 and  10.000230.

>How long does it take to do a sweep cycle?
>
>If your gear is averaging over a longer time to get a more accurate 
frequency 
>value, will it give you the average frequency?

A sweep cycle lasts in the order of the minute. Typically the LPRO locks in 
about 3.5 minutes. I used gate time of 0.1 and 1 second on a 9 digit counter.

Antonio I8IOV



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