Ocean Optics External Triggering Options - Manual (Page 6)

External Triggering Options Instructions
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Product Supported Not Supported
OOISensors External Software
External Synchronization and External
Hardware
OOIIrrad External Software and External Hardware External Synchronization
Palm Spec External Software External Sync and External Hardware
Configuring External Triggering
External Software Trigger Mode
In this level-triggered mode, the spectrometer is “free running,” just as it is in the Normal mode. The
spectrometer is continually scanning and collecting data. With each trigger, the data collected up to the
trigger event is transferred to the software. If you continuously apply triggers (for example, by holding
down the button on via an external switch), this mode is equivalent to operating in the Normal mode.
In the External Software Trigger mode, you set the integration time (as well as all other acquisition
parameters) in the software. The source for the integration clock comes from the A/D converter.
If the software trigger is asserted during integration cycle n, the photons from this integration period will be read out and digitized at the start of
integration cycle n+1
External Software Triggering – Trigger Timing
When to Use the External Software Trigger Mode
Use the External Software Trigger mode if you:
• Are using a continuous illumination source, and the light intensity is constant before, during, and
after the trigger.
• Need to set the integration time in the software.