Cheetah Python Camera with USB3 Interface
–
User Manual
December 5, 2017
Page
23
of
78
Rev 1.0
There is latency for each command due to command execution and data transmission
over the USB bus. This latency varies from command to command because of resource
location and command response length.
3.3 Camera User Set Description
3.3.1 Startup Procedure
Upon power on or receipt of a
‘
DeviceReset
’
command, the camera performs the
following steps:
1.
Boot loader checks program flash memory for a valid firmware image and loads
it into the field-programmable gate array (FPGA).
2.
The camera reads the “Boot From” register from
the parameter Flash and loads
a workspace from one of the configuration spaces as determined by the User Set
Default Selector. The configuration spaces are: Factory Space, User Space #1,
and User Space #2.
3.
The camera completes startup and accepts user commands.
3.4 GenApi Camera Configuration
The Cheetah XML nodes are listed below with a description of the camera configuration
parameters, the interface type, the range of control values, and the access mode for the
parameter (RW: Read/Write, RO: Read Only, WO: Write Only).
Parameter names underlined in
italic and red color
are changeable only if image
acquisition is turned
off
. These parameters cannot be changed if image acquisition is on.
3.4.1 Device Control
Parameter Name
Type
Value
Access
Description
DeviceSFNCVersionMajor
Integer
RW
Major version of
SFNC used in XML.
DeviceSFNCVersionMinor
Integer
RW
Minor version of
SFNC used in XML.
DeviceSFNCVersionSubMinor Integer
RW
Subminor version
of SFNC used in
XML.
DeviceReset
Command
WO
Resets device to
power-up state.
CameraHeadReset
Command
RW
Resets camera
circuitry. USB3
does not reset.
Note: After camera
reset, issue a
