cq.k...@gmail.com said:
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
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
On 07/19/2012 05:48 PM, Chris Hoffman wrote:
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
Ah! The very height of elegance in a good design [imho] : no upgrade needed.
-CH
On Jul 19, 2012, at 12:40, Magnus Danielson mag...@rubidium.dyndns.org wrote:
On 07/19/2012 05:48 PM, Chris Hoffman wrote:
Richard,
This paper is fascinating to me. I finally understand how the TMDE/Metrology
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?]
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
The first step is: use any dual trace oscilloscope and put on channel 1 the
first 10MHz source and on channel 2 the other. Trigger from channel 1 and
see if and at what speed (cycles/second) the other channel walks.
On Tue, Jul 17, 2012 at 6:09 PM, Chris Hoffman, KG6O cq.k...@gmail.comwrote:
Of course the dual trace scope will do this. But the OP asks for
something cheaper. I think you can do the same thing as the scope
with a mixer. Mix the reference and unknown 10Mhz signals then
use a low pass filter. The output is the beat which if everything
is perfect is a DC voltage. But
, KG6O
Sent: Tuesday, July 17, 2012 12:10 PM
To: time-nuts@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
Mr. Sproul: I really like your solution! Do you mind emailing me code and
schematics?
Bob, you right: I should be watching slips with a PPS-actuated buffer. For now,
I don't have the resources for a ready-made dual-input counter, but the
strangest/best things seem to show up at the flea market
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