AWG wrong frequency

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Leonid
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Joined: Fri Apr 11, 2014 4:34 pm

AWG wrong frequency

Post by Leonid » Fri Apr 11, 2014 4:43 pm

Picosys 5444B & PycoScope 6
see attachment for details
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Karunen
Advanced User
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Posts: 194
Joined: Thu Nov 21, 2013 9:22 am

Re: AWG wrong frequency

Post by Karunen » Thu Apr 17, 2014 1:47 pm

Hi Leonid,

Thank you bring this to our attention,
I have notified development and they will look into it.

At the moment if you increase the number of sample to something like 24576 you will get closer to 10Hz.

Thanks,
Karunen

Technical Specialist
Pico Technology

Karunen
Advanced User
Advanced User
Posts: 194
Joined: Thu Nov 21, 2013 9:22 am

Re: AWG wrong frequency

Post by Karunen » Wed Apr 23, 2014 2:58 pm

Hi,

Update this is expected behaviour.

This is limited by the phase resolution of the DDS. In order to achieve the optimum frequency resolution you must use the whole buffer, if you use less the frequency resolution will be worsened proportionally.

Thanks,
Karunen

Technical Specialist
Pico Technology

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