[USRP-users] B200 - Spurs at the frequency domain

Michael West michael.west at ettus.com
Mon Oct 27 15:54:22 EDT 2014


Hi Daniel,

It could be a harmonic of the master clock.  The default master clock rate
is 32 MHz and 5x32=160.  Try setting the master clock rate to a different
value to see if it changes.

Regards,
Michael E. West

On Sat, Oct 25, 2014 at 2:13 PM, Daniel Malafaia via USRP-users <
usrp-users at lists.ettus.com> wrote:

> Hi all,
>
>  I'm analyzing the B200 and I found out that the frequency response have
> some high power spurs.
>  In annex I'm sending an example. In this example the data was gather at a
> Fc=161MHz, Fa=(5+1/3)MHz with a 36.5 gain and with the B200 closed at a
> Faraday cage with no external sources of noise and with the connected
> laptop covered in aluminium.
>  In this situation there's a visible spur at 160MHz, does someone knows
> what the source may be?
>
> Best Regards,
>  Daniel Malafaia
>
>
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>
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