® 8k/4k CL
28
UM 8k/4k CL – REVA – 01/13
e2v semiconductors SAS 2013
•
Test Image Selector
(
TestImageSelector
) :
Defines if the data comes from the Sensor or the FPGA (test
Pattern). This command is available in the CommCam “Image Format” section :
Read function : “
r srce
”;
Returned by the camera : “0” if Source from the Sensor and “1 to 5” if test pattern active
Write function : “
w srce
” <value> :
“0” : To switch to CCD sensor image
“1” :
Grey Horizontal Ramp (Fixed) :
See AppendixA
“2” :
White Pattern (Uniform white image : 255 in 8Bits or 4095 in 12bits)
“3” : Grey Pattern (Uniform middle Grey : 128 in 8bits or 2048 in 12 bits)
“4” : Black Pattern (Uniform black : 0 in both 8 and 12 bits)
“5” : Grey vertical Ramp (moving)
The test pattern is generated in the FPGA : It’s used to point out any interface problem with the Frame
Grabber.
When any of the Test pattern is enabled, the whole processing chain of the FPGA is disabled.
6.3.3
Acquisition Control
This section deals with all the Exposure, Line period and synchronisation modes
•
Synchronisation Mode
(
TriggerPreset
) : Timed or Triggered, it defines how the grabbing is synchronized
.
This command is available in the CommCam “Acquisition Control” section :
Read function : “
r sync
”;
Returned by the camera :
•
“
0
” : Internal Line Trigger with Exposure time Internally Controlled (Free Run).
Not available when
Sensor mode is set in “4S” (whatever the firmware version)
•
“
1
” : External Trigger with Exposure Time Internally Controlled.
Available also when Sensor mode is
set in “4S”.
•
“
2
” : External Trigger with maximum Exposure time
•
“
3
” : One External with Exposure Time Externally Controlled. The same Trigger signal defines the line
period and its low level defines the exposure time.
Available also when Sensor mode is set in “4S”
•
“
4
” : Two External Triggers with Exposure Time Externally Controlled : CC2 defines the start of the
exposure (and also the start Line) and CC1 defines the Stop of the exposure.
Not available when
Sensor mode is set in “4S”
•
“
5
” : Internal Line Trigger with maximum Exposure Time
Write function : “
w sync
” <value>
The Timing diagrams associated to each Synchronization mode and the Timing values associated
are detailed in the APPENDIX B of this document.
