An impedance sweep of the input might give a clue about the LPF. When I get
mine I'll measure it.
On 9/27/2019 11:43 AM, Mark Sims wrote:
A list member did some experimenting with the unit and came up with this very
useful information:
"press and hold RST button, then MODE toggles LPF (low pass filter), GATE
toggles input
impedance"
I wonder what the LPF cutoff freq is?
I am currently doing a noise floor test (connect ref out to input) on my FA2.
The initial (12 hour) results are REALLY good... ADEVs at long (10000+) tau
are in the high E-15 range. I'll post results after I get 24 hours of data.
That annoying freq offset of the FA1 is gone. A 12 hour average of the FA2
freq readings is 10,000,000.000 001 Hz (FA2 clocked by a 5071A).
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