Make a 40kHz square wave on analog output with Python

[Abbadon]

Hi, I am trying to make a simple sqaure wave 40kHz (+1v) with my NI-6215 on AO1. I am able to do this in C#, but when I try the Python nidaqmx I am not able to.

I can write a pulse, but when I add timing, I get no output.

This is what I try:

import nidaqmx

rate = 40000 # Sample rate in Hz
duration = 1000 # Duration in seconds

samples = int(rate * duration)

list = []
for x in range(samples):
    list.append(x % 2)

with nidaqmx.Task() as task:
    task.ao_channels.add_ao_voltage_chan("Dev1/ao1")
    task.timing.cfg_samp_clk_timing(rate)
    task.write(list, auto_start=False)
    task.start()

[MRicefield]

Did you get any errors when running the program?

[VA.KI]

Hello Abbadon,

Have you seen the following document?