X64 Xcelera-CL PX4 User's Manual Glossary of Terms • 119
Glossary of Terms
Bandwidth
Describes the measure of data transfer capacity. PCI devices must share the maximum PCI bus bandwidth
when transferring data to and from system memory or other devices.
CAM
Sapera camera file that uses the file extension CCA by default. Files using the CCA extension, also called
CAM files (CAMERA files), contain all parameters which describe the camera video signal
characteristics and operation modes (i.e. what the camera outputs).
Channel
Camera data path that includes all parts of a video line.
Checksum
A value used to ensure data is stored without error. It is created by calculating the binary values in a
block of data using some algorithm and storing the results with the data.
CMI
Client Modification Instruction. A client requested engineering change applied to a DALSA board
product to support either a non-standard function or custom camera.
Contiguous memory
A block of physical memory, occupying consecutive addresses.
CRC
Proprietary Sapera raw image data file format that supports any Sapera buffer type and utilizes an
informative file header. Refer to the Sapera Basic Modules Reference Manual “Buffer File Formats”
section.
Firmware
Software such as a board driver that is stored in nonvolatile memory mounted on that board.
Frame buffer
An area of memory used to hold a frame of image data. A frame buffer may exist on the acquisition
hardware or be allocated by the acquisition hardware device driver in host system memory.
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