LabVIEW AI AO Parallel data export to spreadsheet

[VikashKumar23]

Hi,

I have created an application where the DAQmx AI and AO continuously read the values from the Duty Cycle.CSV file.

I would like to log the frequency from the AI to an excel sheet. 

since the  write to spreadsheet.vi is located inside the loop the data is written as long as the loop runs

Any way i can get an average value  of the AI and write that one value to the spread sheet ?

[VikashKumar23]

What I am trying to do in that Vi is generating a PWM of 1KHz and feed different duty cycle using the CSV file. The values are fed to a fan.

The tacho out of the fan is red using AI1 and analyse the frequency. 

Task is to record , for this duty cycle this frequency is obtained. Analyse the tacho signal.