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FRA log sweep showing zero at startup

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Hello

 

I made a vi for the FRA data logging and it is already posted. There is one mistake is showing that, when I am sweeping in log(10steps/decade), in the starting of sweep two three steps it is showing all zero values. like as below

 

eg:

 

freq,mag,phase

0.10,12.31,-179.8

0.00,0.00,0.00

0.12,7.31,-179.3

0.00,0.00,0.00

0.15,6.35,-178.23  

after that it is running correctly  

 

In the plotter which I made is showing this zero values but in the data which is saved the zero values are not there.

In the LIN sweep, there is no problem.

I cannot probe the problem.

 

Please help it is very important in frequency response analysis 

 

thank you 

 

"Thanks with regards "
by
..........Gireesh..........
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