Trigger Output; Global Exposure Timing Output; Programmable Timing Output; Trigger Ready Output - Hamamatsu Photonics C11440-22C Insctruction Manual

10-6 TRIGGER OUTPUT

The camera provides a range of trigger output signals to synchronize with an external
instrument and the camera becomes the master and the external instrument the slave.
There are three different trigger output functions as follows. Also, it can output continuous
High output (High output fixed) or continuous Low output (Low output fixed).
These three different trigger output functions can be selected by software command, and
they are output from Timing out connector.
Note Please refer to Figure 10-3 to Figure 10-9 about details of each trigger output functions.
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10-6-1 GLOBAL EXPOSURE TIMING OUTPUT

It shows the global exposure timing where all lines expose at the same time. There is a case that
one event is divided into two frames because the timing of the exposure in each line is different
for the rolling shutter. However, by using the Global exposure timing output the global exposure
becomes possible for the phenomenon that happens for this period. Global exposure timing
output shows the period where all lines expose at the same time.
Note There is no output signal when the exposure time is less than the frame rate.
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10-6-2

PROGRAMMABLE TIMING OUTPUT

By using the programmable timing output, synchronizing external devices is simple. A system
that needs simple timing signal does not require a delay unit nor pulse generator. It is possible to
program and output a pulse that has an optional pulse width and an optional delay time to the
end of readout timing. The setting range for delay time is 0 µs to 10 s, and the setting range for
pulse width is 9.7 µs to 10 s.

10-6-3 TRIGGER READY OUTPUT

The trigger ready output is useful to make the frame intervals as short as possible in external
trigger mode. For example, when the camera is working in the edge trigger mode, the next frame
can start after the previous frame exposure is done. Thus, the camera can't accept a trigger for
the next frame during the exposure period. To reduce useless time to be as short as possible, it
is necessary to know the period when the camera can accept a trigger for the next frame. The
trigger ready output shows the trigger ready period when the camera can accept an external
trigger in the external trigger mode.
C11440-22C Instruction manual_Ver.1.4
Figure 10-10
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