320 CONTENTS
Name Value
InternalLineLength 1041
VerticalBlankLines 34
SensorInClock 74.25 (@50 MHz Pixel clock)
NumberOfLVDS 8
21.11.3.1 Free running mode
In free running mode, the sensor reaches its maximum frame rate. This is done by overlapping erase, exposure and
readout phase. The sensor timing in free running mode is fixed, so there is no control when to start an acquisition.
This mode is used with trigger mode Continuous.
To calculate the maximum frames per second (FPS
max
) in free running mode you will need following formula:
InternalLineLength
*
8 ImageHeight + VerticalBlankLines
FrameTime = ------------------------------
*
----------------------------------
SensorInClock
*
NumberOfLVDS 1000
If exposure time is lower than frame time:
1
FPS_max = ------------
FrameTime
If exposure time is greater than frame time:
1
FPS_max = --------------
ExposureTime
21.11.3.2 Frame rate calculator
Note
The calculator returns the max. frame rate supported by the sensor. Please keep in mind that it will depend
on the interface and the used image format if this frame rate can be transferred.
Note
The exposure time step width is limited to the sensor's row time of 14.05 us and therefore
- auto exposure with very low exposure times will perform with relatively large increments and
- exposure mode = TriggerWidth (if available) will perform with a jitter corresponding to the row time
The following trigger modes are available:
MATRIX VISION GmbH
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