PX4-Autopilot: Can’t use pwm command to test AUX Pwm pins

operating system: windows 7 board: pixhawk4

I need to test the IOpins and auxpins,I follow https://dev.px4.io/en/middleware/modules_command.html

Question1: new start,I use pwm test -c 12 -p 1200 I got this，sawtooth wave

It seems some program press pwm value in channel 1&2 from 1200 to 900, I don’t know why I use mc_att_control stop fw_att_control stop same result too but After when I use

motor_ramp sine 1100 0.5 and use pwm test -c 12 -p 1200 again the result changed

seems works well, why this happened?

Question2: I test auxpwm as I do in testing IOpwm use pwm test -c 12 -p 1200 -d /dev/pwm_output1 It does not work at all

who can tell me why？ many thanks！！！

@julianoes Could you can give me some advise？？