About PWM value of Fan Control

Robotics & Edge Computing Jetson & Embedded Systems Jetson Orin NX
1

Hi
I would like to confirm pwm value of fan cotrol.

In Orin NX, the minimum pwm value of “quiet” mode is 187/255 according to the Fan Profile Control section of software development documentation (r35.2.1)
https://docs.nvidia.com/jetson/archives/r35.2.1/DeveloperGuide/text/SD/PlatformPowerAndPerformance/JetsonOrinNxSeriesAndJetsonAgxOrinSeries.html?highlight=fan#fan-profile-control

On the other hand, referring to Jetson_Orin_NX_Series_Orin_Nano_Series_Thermal_Design_Guide_TDG-11127-001_v1.1.pdf document, the minimum pwm value of “quiet” mode is 130/255.
In addition, the PWM value is changing on STEP

which is the correct value during actual operation?
I plan to use Jetpack 5.1 or later.

Since software development documentation (r35.2.1) is new, I’m guessing that the minimum value of pwm value is 187/255

Best regards.

2

Hi
Could you answer my question?

3

Nvidia doesn’t provide support for NVML. This isn’t even NVML related to begin with. You aren’t going to get an answer here.

5

Your topic was posted in the wrong category. I am moving this to the Jetson Orin NX category for visibility.

9

Hi, please follow above sw doc. The TDG will be corrected in new release in future, thanks.

10

Thank you for your reply.
I Understand.

12

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