When purchasing SD cards, always buy a quality brand such as SanDisk, Kingston or Lexar.
USB memory sticks
If data is to be logged to a USB memory device, the optional RLCAB073 cable, or accessory RLACS164M is required.
USB sticks must also be of a high quality to handle the amount of data sent from the VBOX HD.
VBOX HD will log either to an SD card or a USB drive.
Two files will be created, an ‘.mp4’ video file) and a synchronised ‘.vbo’ data file which contains all of the GPS (and CAN, if applicable) data in ASCII format, recorded at 10 times a second. The files are stored within the ‘media’ folder.
The maximum size of files for SD cards in FAT32 format is 4 GB. If video file larger than this is recorded (time to reach this file size depends on video settings), a new ‘.mp4’ file will be created. Therefore a single ‘.vbo’ file can be associated with multiple ‘.mp4’ files.
The high definition camera format is 720p30. The number of horizontal lines in the image is 720, and the image is progressive (not interlaced), and has a 30 Hz frame rate. The aspect ratio is 16:9 which means there are 16/9*720 pixels on each horizontal line, so the images have a resolution of 1280 x 720 pixels.
VBOX HD units can log up to 32 channels from a connected CAN bus system. Note that the unit must be set up to read set parameters using VBOX HD Setup software (see software manual for more details).