Charles P. Steinmetz wrote:
For schematics, see http://www.ko4bb.com/manuals/. Search for prs10.
Aha, I don't know why I didn't see that when I searched around. Bookmarked! The
response from this list, to a newbie with a probably-obvious problem, is
incredibly helpful and welcoming. Thank
jim...@earthlink.net said:
When designing the system to do coherent two way ranging to the Juno
spacecraft orbiting Jupiter, we found that the rotating magnetic field
(because the spacecraft spins at 2RPM in Jupiter's magnetic field) was
enough to modulate the circuits that track the received
Hello, in the last day of this ugly year
I received a pair of FE5682A.
The two have visibly different tags,
probably are from differen age, and
one has the word FAIL written on
it. The pinut is similar to LPRO-101
see:
http://www.febo.com/pipermail/time-nuts/2012-November/071937.html
but the
By the way, about the psu the unit contains this module:
http://www.farnell.com/datasheets/14431.pdf
so probably internally it works at 12V.
Fabio.
Il 2012-12-31 14:44 Fabio Eboli ha scritto:
Hello, in the last day of this ugly year
I received a pair of FE5682A.
...
Are any of the Time Nut members also watch ( wrist and pocket) nuts like
I am?
Pete WA2ODO
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If
Are any of the Time Nut members also watch ( wrist and pocket) nuts like
I am?
Pete WA2ODO
Hello Pete,
It's about time you joined time-nuts. How are all those HP 5334B frequency
counter's working? To answer your question -- yes, there may be some cross-over
between the
On 12/30/12 8:28 PM, Bob Camp wrote:
Hi
Indeed, there will always be some EMF into the EFC from some field. You can
never really get rid of a loop with some cross section in the EFC circuit. Most
of us don't get to worry about 1x10^-16 at 1,000 seconds on our OCXO's….
Yes. I think it's not
Positive update, in the broken unit
the pin 10 goes to power module input,
while the pin 8 goes to power module
ground, and there is grounded.
I powered the good unit and
it locked in few minutes, wothout driving
the EFC, the frequency seem very near
the FE5680 I set against the GPS.
The output
Hi
I suspect that your ion standard will have some issues from magnetic field.
Quartz it's self has no magnetic sensitivity. Most atomic gizmos have
sensitivity as part of their basic physics.
Bob
On Dec 31, 2012, at 10:41 AM, Jim Lux jim...@earthlink.net wrote:
On 12/30/12 8:28 PM, Bob
On 12/31/12 12:55 AM, Hal Murray wrote:
jim...@earthlink.net said:
When designing the system to do coherent two way ranging to the Juno
spacecraft orbiting Jupiter, we found that the rotating magnetic field
(because the spacecraft spins at 2RPM in Jupiter's magnetic field) was
enough to
On 12/31/12 7:56 AM, Bob Camp wrote:
Hi
I suspect that your ion standard will have some issues from magnetic field.
Quartz it's self has no magnetic sensitivity. Most atomic gizmos have
sensitivity as part of their basic physics.
yes.. shielding of the physics package is part of the
On 31/12/12 16:56, Bob Camp wrote:
Hi
I suspect that your ion standard will have some issues from magnetic field.
Quartz it's self has no magnetic sensitivity. Most atomic gizmos have
sensitivity as part of their basic physics.
All atomic clocks that I know of have this sensitivity.
One
Hi Fabio,
A few years ago I got one of the programmable FE5680 units. It included
the same small, square board that I can see in your pictures. Only 3
wires: red, black, and orange. My unit didn't have any EFC control.
On a hunch, I checked the orange wire and found that it was the EFC
On 12/31/12 8:13 AM, Magnus Danielson wrote:
On 31/12/12 16:56, Bob Camp wrote:
Hi
I suspect that your ion standard will have some issues from magnetic
field. Quartz it's self has no magnetic sensitivity. Most atomic
gizmos have sensitivity as part of their basic physics.
All atomic clocks
On 12/28/2012 12:34 PM, Chris Albertson wrote:
One idea that I like is to first get a large FPGA. Then you load in a
soft CPU and then you run an OS and NTP on the soft CPU. Inside
the softCPU the counter is implemented like it is in a real CPU but
you can add the ability for a PPS to latch
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