[time-nuts] Timing Health Monitoring

[Bob Camp]

Hi

A dual input counter is probably your best tool. Something like a 5335 or
5334 would be reasonably cheap. Maybe compare edge crossing time to a pps.
Mux all of your outputs and compare them one at a time. You will have data
resolution at 1x10^-12 in under a day.  

For time slips (as in dropped cycles) you likely would want to divide them
all down to 1 pps (or less) and compare there. 

Of course that all makes a lot of assumptions about what you need to do.

Bob

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Chris Hoffman, KG6O
Sent: Tuesday, July 17, 2012 12:10 PM
To: time-nuts at febo.com
Subject: [time-nuts] Timing Health Monitoring

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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