I also think that it cannot replace a TimePod. But at this price it
should be good for doing some experiments. The other choice I would take
is the FSA3011 from the chinese oem TURN Dynamic Systems...
It costs four times more but seems to be a little bit more professional...
My interest would be whether these can do phase noise measurements. That
would be fine.
Are there any time-nuts here having done experiments with the FSA3011?
The results would be very interesting.
In the next time I want to do a compare of both and will post the
experience and diagrams here.
But not before the end of october. I unfortunately have to go for a
surgery next week. After that I am in a health resort for some weeks.
Best regards
Chris
Am 02.09.2019 um 22:08 schrieb Mark Sims:
Yes, it should work with Timelab, Stable32, etc. It streams a series of
frequency measurements every second out the USB port (it uses a FTDI chip for
the USB interface). The data is of the format:
" F:0123456789.123456789<cr><lf>" (without the quotes)
Measurements with a PLL unlock error are preceded by an '*'. I've only seen
unlocks when changing the input freq from say 1 MHz to 10 MHz. I get two
flagged measurements each time the freq changed. I don't know how small a
freq change can cause an unlock.
I don't know if Timelab can directly take the output data stream because of the leading
"F:". You may need to capture data to a file and edit off the " F:"
I also don't know how well it would work for phase noise measurements... it
would be no where as good as a TimePod. I am doing some tests to see how well
it compares to a TAPR TICC.
BTW, my FA1 seems to have a frequency measurement bias of around -0.0002 Hz on
a 10 MHz signal. Also, I don't see any temperature related variation in the
measurements... air conditioning was swinging the room temp over a 2 degree C
span and I saw no traces of it in the results.
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