Whether the analog output can generate PWM waves

[renfeix]

Whether the analog output can generate PWM waves by generate  a square wave

[altenbach · Accepted solution]

An analog output can have any shape but an ideal square wave has a fixed duty cycle (exactly 50%). Once you do PWM, it's no longer a square wave.

What kind of instrument do you have?

[renfeix]

Thank you sir，I have NI 9269 and cDAQ-9178.

Compared with digital output or Counter Output which method is more accurate?