[time-nuts] FE-5680A performance

Rob Kimberley robkimberley at btinternet.com
Thu Jan 5 11:30:11 UTC 2012


I've had the pleasure of "playing" with one of these, when I was under
contract to a UK company that was selling Timing Solutions products before
they were bought by Symmetricom. A really nice piece of kit and very easy to
use. Would be a great addition to any timing lab, but outside my personal
reach at present!

Enjoy!

Rob

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of SAIDJACK at aol.com
Sent: 04 January 2012 22:20
To: time-nuts at febo.com
Subject: Re: [time-nuts] FE-5680A performance

Yes, it is the most amazing time nut tool! The older TSC5115A is also
amazing.
 
I consider myself very lucky...
bye,
Said
 
 
In a message dated 1/4/2012 14:17:48 Pacific Standard Time,
azelio.boriani at screen.it writes:

Wow,  have you a TSC5125A? Lucky you...

On Wed, Jan 4, 2012 at 11:12 PM,  <SAIDJACK at aol.com> wrote:

> 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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