Hi Le0b95,
two notes:
1. your USB6003 does not support hardware-timed DIO channels, they are only named "static" in the manual…
2. you create a simulated signal with just one sample: are you sure you will get a nice PWM signal from this? (But on the other hand you will get into trouble trying to output more than one sample at a time to your DO channel due to point 1.)
You need to switch on/off the DO channel in the software - with a frequency less than 100Hz…
I also recommend to learn those DAQmx basics and to get rid of ExpressVIs as soon as possible.
Best regards,
GerdW
using LV2016/2019/2021 on Win10/11+cRIO, TestStand2016/2019