ZED X IMU sampling rate stuck at ~195Hz instead of 400Hz

Hardware ZED X
1

Issue:

According to the official datasheet, the ZED X accelerometer should run at 400Hz. However, we are observing a consistent ~195–200Hz fluctuation (when using ZED X S/N: 40200550 & ZED Box) in two separate scenarios:

  1. Real-time monitoring – ZED Sensor Viewer shows the accelerometer running at ~195Hz

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  2. SVO2 playback – After recording with ZED Studio and exporting sensor data via SDK’s export sensor functions, the IMU frequency calculated from timestamps is also ~195–200Hz

Questions:

  1. Is 400Hz achievable on ZED BOX, or is there a platform-level limitation?

  2. Is this a known issue with a workaround or firmware fix?

  3. Are the SVO2 IMU timestamps reliable despite the reduced rate?

2

Hi Terry,

Thanks for your observation. The behavior you’re seeing is expected — the current SDK and ZED X drivers limit the IMU data rate to around 200 Hz.
That said, IMU timestamps remain accurate and consistent, ensuring reliable performance at this rate.
We’re working on aligning the documentation to better reflect this behavior.

Best,

Stereolabs Support