General

Note

The above table describes the specification of the NVIDIA Jetson Nano Developer Kit.

Additional Settings

Impact Acquire - System Settings

Note

A Request in the Impact Acquire API represents a buffer where an image with the current device configuration is captured into. In order to avoid losing images at a high FPS, it's recommended to increase the number of these request buffers (i.e. ' RequestCount' in ' SystemSettings', by default the value is set to 4 for Balluff USB2.0 cameras), so that the device driver can continue capturing image data even if the host application is sometimes slower at processing an image than the camera at transferring one. As a rule of thumb, the number of capture buffers should be configured roughly within the range of FPS/2 and FPS/5. In the following test, the RequestCount is set to 20 which is roughly FPS/5.

Benchmarks

Camera	Resolution	Pixel Format	Frame Rate [Frames/s]	Bandwidth [MB/s]	CPU Load
mvBlueFOX-ML/IGC200wG	752 x 480	Mono8	93.72	33.88	~31%

Note

Camera models of type BVS CA-UB1* are recommended. The following problems might be observed when using the camera models of type mvBlueFOX-ML/IGC*:

• On ARM platforms, there might be several lost frames at the beginning of acquisition start.
• If the device has already been initialized, between acquisition stop and restart, there will be lost frames registered in the statistics, because the image sensor keeps generating image data also after the acquisition stop as long as it has been initialized.

Remarks

Choose the right power supply

The Jetson Nano has 2 power supply possibilities: via the micro-USB connection or via the Barrel Jack connection.

The power (by default 10W) via the micro-USB connector is not sufficient if peripherals (e.g. keyboard, mouse, cameras, etc...) are connected. To avoid the system from throttling due to over-current, please supply the board with power through the Barrel Jack connector (4A@5V), when powering the USB/USB3 camera through the USB bus.