ORCA-Lightning Digital CMOS Camera C14120-20P Instruction manual_Ver.2.5
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10-3 CAMERA OPERATION MODES
This mode is for controlling the timing of readout and exposure.
This mode can use; Free running mode, Edge trigger mode (External trigger mode), and Start trigger
mode.
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Please contact a Hamamatsu subsidiary or your local distributor for the detail of the timing information.
10-3-1 Free running mode
The camera has Free running mode which the exposure and readout timing can be set and controlled
by an internal microprocessor. The exposure time is set by application software.
(1) In Normal Area Mode
This mode has “Normal readout operation” (in which the exposure time is longer than the one
frame readout time) and “electrical shutter operation” (in which the exposure time is shorter than
the one frame readout time). These operations are automatically switched depending on the
exposure time setting.
a. Normal readout operation or action
The operation is suitable for observation, monitoring, field of view and focus adjustment, and
animation because it can operate with full resolution, which is faster than the video rate.
In addition, the exposure time can be extended to collect more signals and increase the signal
to noise ratio if the object is dark. In this operation, the exposure time is the same or longer
than the 1 frame readout time. In this mode, the frame rate depends on the exposure time, and
it becomes frame rate = 1/exposure time. The maximum exposure time is 1 s.
Figure 10-1
