[time-nuts] FE-5680A performance
SAIDJACK at aol.com
SAIDJACK at aol.com
Wed Jan 4 22:12:19 UTC 2012
Hi Graham,
the TSC5125A has auto-scaled the plot to 2E-04Hz fractional frequency from
10MHz, or in other words one vertical division is 2E-011 at 10MHz, or 20
parts per trillion, or 0.0002Hz error.
I also don't like the way the TSC shows the frequency, and the fact that
you can only capture about 9 minutes of information for some reason. Why not
show 24 hours or 48 hours of data here?
With this in mind, the FE5680A wanders around about +/-6E-011 max in this
plot.
Hope that helps,
Said
In a message dated 1/4/2012 13:41:07 Pacific Standard Time,
timenut at austin.rr.com writes:
On 1/4/2012 3:18 PM, _SAIDJACK at aol.com_ (mailto:SAIDJACK at aol.com) wrote:
Here is a set of performance plots for the FE5680A that we had measured
before.
Performance has improved significantly, ADEV is now in the xE-012's.
Phase noise and spurs are worse than originally reported, they kind of
suck.
Frequency over time looks quite nice though, definitely quite useful as a
frequency reference.
bye,
Said
Said:
Your vertical units per division for the frequency plot don't make sense.
Please re-check and let us know.
Thanks,
--- Graham
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