C13440-20CU / C13440-20CU01 Instruction manual_Ver.1.3
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11-1-6 CAMERA OPERATION MODES
11-1-6-1 Free running mode
The camera has Free running mode which the exposure and readout timing can be set and controlled
by an internal microprocessor. Free running mode has normal readout mode (in which the exposure
time is longer than the 1 frame readout time) and electrical shutter mode (in which the exposure time is
shorter than the 1 frame readout time). These readout modes are automatically switched depending on
the exposure time setting.
Note
•
Please contact a Hamamatsu subsidiary or your local distributor for the detail of the timing information.
(1) Normal readout
The normal readout mode 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*. (* 100 fps with standard scan with Camera Link, 40 fps with USB 3.0 (16 bit digital
output) and 30 fps with slow scan)
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 the normal readout mode, 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 10 s.
Figure 11-2
