DAVIS346-Bundle

Package contents

The standard device package you’ve received from us contains:

• 1 x DAVIS346 RED camera
• 1 x USB 3 cable, 1m with screws
• 1 x vari-focal C/CS mount lens
• 1 x small tripod

Installation

First, connect the camera to your computer via a USB cable and ensure your system correctly recognizes and installs the USB device. Please check our USB device installation documentation for more details. Once that is done, you can use one of our supported software packages to interact with the device, more details on our software support can be found in the next section.

Software support

libcaer

This camera is compatible with our libcaer software package. The libcaer header ‘libcaer/devices/davis.h’ contains all configuration options. DAVIS_CONFIG_* options apply to all DAVIS models, DAVIS346CONFIG* options only to this camera. Open the device using the ‘CAER_DEVICE_DAVIS’ device specifier.

DV platform

This camera is compatible with our Dynamic Vision (DV) software platform. Simply choose the camera from the Input Selector (or manually add the ‘dv_davis’ module) and it will automatically recognize the camera and create its default configuration.

jAER

This camera is compatible with SensorsINI’s jAER software package. Please select the following chip classes in jAER and load the appropriate configuration:

biasgenSettings/Davis346b/DAVIS346blue.xml biasgenSettings/Davis346b/DAVIS346red.xml biasgenSettings/Davis346b/DAVIS346red_color.xml

Firmware upgrades

Firmware upgrades should be executed when our software advises you to. To upgrade firmware, please read the reflashing guide, which will instruct you in the usage of our Flashy tool.

Serial number

We may ask you to identify the device by serial number in support queries. The serial number can be found on the case, usually a four digit number printed on a black label located at the top of the camera case, in the form ‘COLOR 0012’.

Optics

The lens mount is designed for CS mount lenses. If you have a C mount lens (the lens type is usually written in fine print on the lens itself), you need to use a C-to-CS adapter ring that moves the lens further from the chip. In case you have received a C mount lens from us, the adapter ring will be included. The chip requires a lens designed for 1/3 inch imagers.

The field of view (FOV) depends on the focal length L of the lens and the size W of the pixel array. It is computed from geometrical optics, not accounting for any lens distortion. The angular FOV (AFOV) is given by:

AFOV=2*atan(W/2/L)

Where W is the array width (number of pixels * pixel pitch) and L is the focal length. The linear FOV (LFOV) at a distance D from the lens is simply given by similar triangles:

LFOV=D*W/L

The pixel array has a resolution of 346 x 260 and measures:

• Width: 346 pixels x 18.5 um/pixel = 6.4 mm
• Height: 260 pixels x 18.5 um/pixel = 4.81 mm

The following table shows the horizontal and vertical field of view in degrees and its size at various distances for different common focal lengths.

Computations of Field of View

dist. 100 cm 305 183 142 107 53.3

Connectors

All connectors on the DAVIS346 RED are located on the back.

A USB 3 microB connector with screws provides robust data connectivity.

Any USB 2 or 3 cables with microB connectors can be used, though we recommend the usage of cables with appropriate screws for a more secure, robust connection. A 1m cable with screws is included with the device.

The multi-camera synchronization connectors are HiRose HR10A-7R-4P (male, SYNC OUTPUT) and HR10A-7R-4S (female, SYNC INPUT) connectors. Cables should use the matching connectors HR10A-7P-4S (female) and HR10A-7P-4P (male). Cables can be ordered from various suppliers, we recommend:

Raymo Connectors

Please note that to keep full electrical isolation between different cameras, the cable should not be shielded, or if it is, the shield should not connect one end of the cable to the other.

Input signals can be 3.3V or 5V, depending on the VDD_IN supplied externally, output signals are 5V, as is VDD_OUT. If you chain cameras together for synchronization, the clock and VDD will be 5V, for example.

Synchronization connectors pinout is shown in the image below. Please note that all the pins in the SYNC IN ports are isolated from the SYNC OUT ports.

Dimensions