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Chapter 14 PI-MAX4: EM Family 213
14.2.2 Trigger Sources
The trigger source for the Exposure-Shift cycle can be either internally generated by the
camera and controlled by LightField, or supplied from an external source via the
Trigger In
connector on the rear of the PI-MAX4: EM. For example, when each exposure cycle must
be synchronized with an external light source (e.g., a laser,) external triggering is used.
14.2.3 Image/Frame Acquisition
As with standard operation, the PI-MAX4: EM family of cameras supports two trigger
modes for Kinetics:
• In Readout Per Trigger mode, the camera requires only one trigger to initiate an
entire series of Exposure-Shift cycles. In this mode, the camera uses the exposure
time that has been programmed into the software for other triggers.
• In Shift Per Trigger mode, each Exposure-Shift cycle is independently triggered by
a single pulse.
NOTE:
Although gating does not result in the accumulation of light
through the window, ambient light surrounding the experiment
should always be minimized when using
Shift Per Trigger
mode.
Figure 14-10 illustrates and compares the timing diagrams for these Exposure-Shift modes.