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® 8k/4k CL
27
UM 8k/4k CL – REVA – 01/13
e2v semiconductors SAS 2013
•
Scan Direction
(
ScanDirection
) :
Set the scan direction for the sensor. This value is available in the
CommCam “Image Format Control” section :
Read function : “
r scdi
”;
Return by the Camera : 0, 1 or 2 (Forward/reverse/external)
Write function : “
w scdi
<value>”;
“0” : Forward.
“1” :
Reverse
“2” : Externally controlled (by CC3 of the
CameraLink Sync signals)
Forward/reverse information has to be set correctly as soon as the Mode “2S”, “4S” or 2SB of the sensor
are set : In these modes, the sensor/Camera need to know what is the real order of the lines for the
exposure delays.
The Forward direction is defined as detailed beside :
Note
: The delay for the Camera to take in account a change in
the ScanDirection value is :
-
In 2S mode :
1s
-
In 4S mode :
1,5s
This information can be set dynamically by using the CC3
Trig signal of the CameraLink connector (change the
direction “on the fly”).
In these case, the Trigger signification is :
“0” : Forward.
“1” :
Reverse
This positioning takes also in account that the mode
“Reverse X” is “Off” (Normal readout direction)
Web
Direction
First
Pixel
Readout
Direction