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Synchronisation problem AD9951

Question asked by Rice on Sep 13, 2011
Latest reply on Feb 6, 2014 by JaqueLeC

Hallo,

 

I am trying to work with two of these DDSs in a synchronised way. In order to do that, I connect the synclk output of the first of these to  the syncin of the second one. I configure the second one of these DDSs (slave) performing an automatic synchronisation.

 

The problem I find is that, when I power down the DAC output, when powering it on again I see that the phase of that signal has changed.

 

How can I maintain the phase relation of the two outputs when I will be switching on and off the DDSs?

 

Thank you in advance

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