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pna-x,what is the if frequency dependent on?

Question asked by mindhen on May 27, 2017
Latest reply on Jun 8, 2017 by jvall

In IF access part of pna series network analyzer help, with dsp version 4, the if frequency is 9*(60e6/71)when rf is equal or above 53mhz.  In the equation, I guess 60e6 is the sampling frequency of the ADC. What are the  9 and 71 stand for? Someone can help me ,thanks.