Multifunction DAQ

IEPE microphone + nidaqmx + python

Hello,

I am running a little python script to log the data from a microphone, I would like to sample a sine wave with 500Hz, so I thought I would need a sampling rate of 10000. I can log some data but it seems I am not activating IEPE from python.

This is the code I am using:

###############################################
# import libraries
import time as t
import numpy as np		
import nidaqmx
import csv

fSampling = 10000 #Hz
nSamples = 1 #samples
dtMax = 10 #sec

csvfile ="./data.csv"
###############################################
# DAQ

# config

with open(csvfile, "w") as output, nidaqmx.Task() as task:
  writer = csv.writer(output, delimiter=';')
  task.ai_channels.add_ai_voltage_chan("cDAQ1Mod1/ai0")
  task.timing.cfg_samp_clk_timing(fSampling)
  t1 = t.time()
  dt = 0
  while dt < dtMax:
      data = task.read(number_of_samples_per_channel=nSamples)
      t2 = t.time()
      dt = t2-t1
      writer.writerow(data)

it is mostly copied from different sources but I think I get what it does. I read in the nidaqmx-python documentation that I can set the IEPE sensitivity, but I couldnt find anything about how to enable it at all.

The setup works with labview: