Princeton Instruments PI-MAX4 - External Trigger Source; Figure 9-7: Trigger Expander: External Trigger Source

Chapter 9 LightField and Dual Image Feature 161
9.3.2.2 External Trigger Source
When
Trigger Source is configured to External, additional configuration parameters are
required in order to allow the PI-MAX4 to be triggered from an external source. See
Figure 9-7.
Figure 9-7: Trigger Expander: External Trigger Source
The additional configuration parameters required for an External source are:
• Threshold;
Specifies the minimum threshold voltage, in V, for an external trigger source. Any
incoming pulses with a voltage level less than this threshold value will be ignored.
• Coupling;
Defines the coupling between the external trigger and the camera.
Valid values are:
— AC;
— DC.
• Termination;
Specifies the impedance load of the external trigger source.
Valid values are:
— 50 ;
— High Impedance.
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