ORCA-Lightning Digital CMOS Camera C14120-20P Instruction manual_Ver.2.5
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10-3-2 External trigger mode
The camera has various external trigger functions to synchronize the camera with the external
equipment. In this mode, the external equipment becomes a master and the camera becomes a slave.
The mode has the following kinds.
(
: enabled,
−
: disabled)
Functions
Normal
Area Mode
Lightsheet
Readout Mode
External trigger mode
Edge trigger mode
Global reset Edge trigger mode
−
Level trigger mode
−
Global reset Level trigger mode
−
Synchronous readout trigger mode
−
Incidentally, External trigger mode has “External trigger delay function”.
In most cases when a delay between the laser pulse emission and the exposure start is needed, a
delay unit is set between the laser and camera to control trigger timing. In each external trigger mode of
the camera, the delay can be set to the trigger signal input to the camera by command. With this setting,
a range of trigger can be arranged without a delay unit. The range for delay time is 0 µs to 10 s (1 µs
steps).
•
Please contact a Hamamatsu subsidiary or your local distributor for the detail of the timing information.
(1) Edge trigger mode
Edge trigger mode is used so that the exposure starts according to an external signal. The
exposure time is set by application software. In this mode, the exposure of the first four lines (the
following figure: 0H to 3H) are begun on the rising edge timing or falling edge timing of the input
trigger signal into the camera. After the readout time of four lines passes, the exposure of the
second lines (the following figure: 4H to 7H) are begun, and subsequent lines are exposed
similarly.
Figure 10-4 (Example for rising edge in Normal Area Mode)
