In Sweep mode can we control rising and falling step size in DDS AD9858.
if yes then how ?
If you want to have a sweep up first, then sweep down after certain time, then yes, you will write DFTW twice.
Yes, we can control the rising and falling step size by loading values into the DFTW register value.
To identify whether the sweep is up or down, the DFTW is expressed as 2's complement.
You just set the corresponding sign bit. If your sign bit or MSB is 0, it indicates a sweep up and an MSB of 1 indicates sweep down.
Thanks to your Reply
As you said DFTW is expressed as 2`s complement .its mean we have to define DFTW register two time First rising and second falling ?
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