Sure you can. If you have one of the 'scopes with the AWG you have some very limited PWM capability by setting a square wave and controlling the duty cycle. Of course, I wouldn't expect Hantek support to be aware of this
You're restricted to maximum swing of +/-3.5V.
You're restricted to 99 levels
Dear Sir,
This machine does not support PWM signals. We will publish the new version of the machine on the official website. Our products are available on AliExpress and you can buy them.