[time-nuts] Timing Health Monitoring

[Chris Hoffman]

Richard,

This paper is fascinating to me. I finally understand how the TMDE/Metrology lab to which I continually sent my measurement equipment for calibration was so important. 

Looking back, I recall something that looked exactly like an FMS rack shown in the paper! It was accompanied by a make-shift cubicle with walls of HP and Marconi gear in various states... and a sweet, aged, bearded geek with trifocals... 

It's telling, I think, that the first FMS was built on an Apple II.

 
-CH

Chris Hoffman
cq.kg6o at gmail.com
http://ar.ctur.us




On Jul 18, 2012, at 7:00 PM, Richard H McCorkle wrote:

> Chris,
> If you have multiple standards to monitor (or may have in the future)
> you might consider building a small version of the NIST FMAS board
> described in http://tf.nist.gov/general/pdf/1950.pdf to keep track
> of them.
> 
> Richard
> 
> 
>> What advice does anyone have on building/finding cheap [visual?] comparison devices
>> to display or detect a timing [lesajo?] from my 10MHz sine wave ports?
>> 
>> Further, what timing/health metrics could/should I be aware of and/or looking for?
>> 
>> I do not want to spend good money on another oscillicope if I can help it, but I do
>> want to see, or at least be remotely  aware of clock slips/walks and other
>> anomalies. I am thinking about building an embedded system to automate monitoring,
>> configuration, and alerts... perhaps using an Arduino.
>> 
>> -CH
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> 
> 
> 
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