[time-nuts] Low noise frequency multiplication
Stephan Sandenbergh
stephan at rrsg.ee.uct.ac.za
Tue Mar 6 11:13:59 UTC 2007
Hi Bruce,
Thanks for correcting me. It's so easy to ignorantly carry along a mistake
as simple as this one.
Thanks again,
Stephan.
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf Of Dr Bruce Griffiths
> Sent: 02 March 2007 02:12 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] Low noise frequency multiplication
>
> Stephan Sandenbergh wrote:
> > Darn, the table is a mess. Here is the corrected one:
> >
> > LVPECL Outputs
> > Hz dBc/Hz
> > 1 ?
> > 10 -127
> > 100 -145
> > 1k -153
> > 10k -158
> > 100k -158
> > 1M -158
> >
> > 10MHz OCXO
> > Hz dBc/Hz
> > 1 -100
> > 10 -130
> > 100 -152
> > 1k -160
> > 10k -165
> > 100k -165
> > 1M -165
> >
> > 10x Multiplied
> > Hz dBc/Hz
> > 1 -80
> > 10 -110
> > 100 -132
> > 1k -140
> > 10k -145
> > 100k -145
> > 1M -145
> >
> >
> Stephan
> The last table above should read:
>
> 10x Multiplied
> Hz dBc/Hz
> 10 -80
> 100 -110
> 1k -132
> 10k -140
> 100k -145
> 1M -145
> 10M -145
>
> Bruce
>
> > Diverence between 10MHz x10 Multiplied and AD9512
> > Hz dBc/Hz
> > 1 17
> > 10 13
> > 100 13
> > 1k 13
> > 10k 13
> > 100k 13
> > 1M 13
> >
> >
> > Regards,
> >
> > Stephan.
> >
> >
>
>
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