If I would like to ask what is the sampling frequency of the D435, and also if I want to synchronize the data acquisition with the D435, Lidar L515, how do I set the synchronization information?

[wenmingxiaohuo]

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Required Info
Camera Model	{ R200 / F200 / SR300 / ZR300 / D400 }
Firmware Version	(Open RealSense Viewer --> Click info)
Operating System & Version	{Win (8.1/10) / Linux (Ubuntu 14/16/17) / MacOS
Kernel Version (Linux Only)	(e.g. 4.14.13)
Platform	PC/Raspberry Pi/ NVIDIA Jetson / etc..
SDK Version	{ legacy / 2.. }
Language	{C/C#/labview/nodejs/opencv/pcl/python/unity }
Segment	{Robot/Smartphone/VR/AR/others }

Issue Description

<Describe your issue / question / feature request / etc..>

[MartyG-RealSense]

Hi @wenmingxiaohuo Sampling Frequency is a phrase usually associated with the speed of the IMU streams. The D435 camera model does not have an IMU component. The speed of non-IMU streams such as depth, infrared and RGB is expressed as FPS (Frames Per Secpnd).

As D435 and L515 are different camera technologies (stereo depth and lidar depth), they cannot be mixed together in a hardware sync arrangement because hardware sync works differently on the L515 model. So you would likely need to instead use camera metadata to sync together the two streams, as described at #2186

[MartyG-RealSense]

Hi @wenmingxiaohuo Do you require further assistance with this case, please? Thanks!

[MartyG-RealSense]

Case closed due to no further comments received.