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Flare 12M CXP User's Manual
The inter-frame time between exposures is equal to the Frame Overhead Time (FOT) minus
the Exposure Overhead Time (EOT). See Table 10 for the minimum inter-frame times for the
12M180. The minimum inter-frame time for the fastest 12M180 configuration is 15 µs.
3.4 Frame Period and Exposure
The frame period in free-run exposure mode is controlled with the
Frame Period
register,
address 0x40000001C. The frame period is specified in microseconds. The minimum frame
period of the camera (maximum frame rate) is determined by the output format and the
resolution. Assuming free-run operation and that the exposure time is less than the readout
time the frame period is calculated as follows:
➢
Frame Period = Frame Overhead Time + Readout Time
The Frame Overhead Time (FOT) depends on the output format and the horizontal resolution.
The Exposure Overhead Time (EOT) is included in the programmable exposure times, and
must be considered in the level-controlled exposure. The readout time of a frame is equal to
the number of lines in the output image divided by two then multiplied by the dual line time.
FOT, EOT and line times are also shown in Table 10.
IO Industries Inc.
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Revision 2.0
Figure 11. Edge-triggered double exposure timing
Trigger
(rising)
Programmed
Exposure Time,
Frame N
FOT
Readout Time, Frame N
Automatic Exposure Time,
Frame N+1
Readout Time, Frame N+1
EOT
FOT
EOT
Programmed
Exposure Time,
Frame N
EOT
FOT
Inter-frame Time