Hi
A few possible complications:
I suspect you would run into bits and pieces of “stuff” that had
slowly been magnetized inside the C field ( think of things like
component leads). Just how they would impact things depends a
bit on how fast they respond to the change. ( = you have both external
In physical terms, the direction the C-field does not matter in a
atomic frequency standard, it just has to be of constant magnitude.
The ambient magnetic fields adds to the C-field, most notably the
geomagnetic field, and any (strong) nearby DC currents.
Some of the "telecom" rubidiums reverses
In message <4d24832f-8127-411a-8566-973ac6f5d...@n1k.org>, Bob kb8tq writes:
>In general the way you go from 1 to 10 to 100 seconds is to decimate
>( = throw away) the data to get a phase record at the tau you are after.
The problem with that, is that decimation may _also_ throw away noi
Hi
In general the way you go from 1 to 10 to 100 seconds is to decimate
( = throw away) the data to get a phase record at the tau you are after.
Any averaging that you do will filter out some noise. Since ADEV is a
measure of noise, getting rid of it is not a real good idea. You can indeed
make y
Good question and the answer is, I don't know. The photo shows June 2018, but
who know whether that's representative. Being antsy, I opted to buy from a
seller in the US with quick shipping, rather than waiting six weeks for one from
Asia.
On 5/1/2020 8:37 PM, Bill Notfaded wrote:
Did you
Hi all,
I have a fairly newbie question on averaging of phase data, prior to ADEV.
In a paper by Sherman and Jordens (https://arxiv.org/pdf/1605.03505.pdf) on
oscillator metrology using SDR (Ettus N210), for long term measurements (1
tau up) the group estimates an average phase to reduce the data
Hi
Like pretty much all electronics GPSDO’s have been a “designed in
the USA / built across the ocean” sort of thing for a long time. The
current crop of Trimble and Symmetrical salvage parts on eBay
are simply the latest wave. They are the “next generation” of the parts
we all bought 10 or 15
Tantalum capacitors are known to occasionally short for no good reason.
Give them a reason and they'll be happy to oblige.
Things that can damage a tantalum cap in a hurry include excessive voltage,
reverse polarity, overheating (likely with hand soldering) and current
spikes.
If it were me, and as
On Freitag, 1. Mai 2020 23:42:46 CEST John Bievenour wrote:
> I'm an amateur electronics hobbyist who's still a newbie (especially to
> SMD), so please forgive the basic question.
>
> I recently acquired a FE-5680A that was failing to lock on frequency (pin 3
> never went low). It will power up, s
