Tom,
On 02/27/2015 01:18 PM, Tom Van Baak wrote:
2) Does any one have the test data of 12 digit/s counter when DUT=REF?
I want to know the gap between mine and a commercial counter.
Thanks
Li Ang
I did a lot of testing of 53132A counters a while back to research how well the
Daniel wrote:
I designed a board with an OCXO, pic microcontroller, power supply,
mains interface with optocoupler, and SD card for data
collection..* * * The boards also have a small Li-Ion
battery and battery charger for short power outages. Boards are
manufatured and the most
When I first came across that article on theregister.com, I thought that it
was a rather cute idea and decided to give it a try. I set up a couple of
data recorders that logged AC zero crossings to an SD card (with 64 Mhz clock
resolution). They were set up around 8 miles apart. I also
Hi Daniel,
That will be an interesting experiment. I'm happy you are doing it. You may
want to run all five boards within the same house first -- to establish your
noise floor and to check your post-processing (non-aligned log files, glitches,
power fails, oscillator drift, etc.).
Here's one
Like this?
http://fnetpublic.utk.edu/gradientmap.html
I am the dot just below the Canadian border in WA State.
Dave
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf
Of Philip Gladstone
Sent: Friday, February 27, 2015 07:47
To: Discussion of
A good paper to read about the trouble when DUT is close (or equal to REF)
is:
http://literature.cdn.keysight.com/litweb/pdf/5990-9189EN.pdf
Isolating Frequency Measurement Error and Sourcing Frequency Error near the
Reference Frequency Harmonics
Nice reading and illustration of the
I´m planning an experiment like that... I designed a board with an OCXO,
pic microcontroller, power supply, mains interface with optocoupler, and
SD card for data collection.. I plan to sincronize a counter running at
10MHz between them and log events at 5 different points in my city. The
Is there a handy one pager kind of explanation of noise spectra after
some forms of signal processing..
For instance, if you have a oscillator which has a 1/f characteristic,
and you mix it with itself, what is the spectra of the output of the mixer.
Or if you have a 1/f^3 characteristic
Hi Bob,
On 02/27/2015 08:24 PM, Bob Camp wrote:
HI
On Feb 27, 2015, at 10:46 AM, Philip Gladstone
pjsg-timen...@nospam.gladstonefamily.net wrote:
On 2/26/15 20:39, Charles Steinmetz wrote:
ben wrote:
I'm going to have to build one of these. Assume you have some sort of
circuit that
