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 Grid density 
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 Draws the fine grid for Y 
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 Permanent autoscale 
       Scales the Y axis at each measurement with the selected scale mode  
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 Scale mode 
  
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 Two modes are available: 
• All curves with same scale 
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 Expand / compress (Y)  
  
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 Expand or compress all curves in Y direction 
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 Move 
  
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 Shift all curves in the desired direction 
  
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 Expand / compress (frequency) 
  
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 Expand or compress all curves in frequency axis direction (only for acoustic measurements) 
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 Autoscale 
  
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 Scale all lines so that they are at least 5 % of the maximum amplitude (only for acoustic measurements)  
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 Decadic grid 
  
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 Label the frequency axis in octave, 1/3, 1/6 or decadic intervals. 
  
Example for 1/3 octave: 
Decadic: 
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 Frequency axis 
  
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 Select the type of frequency bands inn acoustic mode (octave, 1/3, 1/6) 
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