Ocean Optics External Triggering Options - Manual (Page 3)

External Triggering Instructions
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Trigger Input Pin Information for Ocean Optics
Spectrometers
Trigger Mode
Trigger Input Pin
Description
S2000
S1024DW
QE65000
USB2000
USB2000+
USB4000
HR2000
Jaz
HR4000
HR2000+
NIR Series
NIRQuest
Series
External
Software
8
10
7
10 10
Asynchronous Mode -
Integration time specified in
software
External
Synchronization
5
Not
Available Not
Available Not
Available Not
Available Synchronous Mode - User
provides integration clock
External
Hardware
4
Not
Available
7 10
Not
Available Synchronous Mode -
Integration fixed by jumpers
External Triggering vs. Triggering an External
Event
There could be some confusion between the concepts of External Triggering and triggering an external
event. The following sections explain each of these concepts.
External Triggering
In External Triggering, an event outside the sampling system (such as a push button, lever activation, or
laser pulse) triggers the voltage level on the spectrometer’s trigger pin and instructs the spectrometer to
begin spectra acquisition.
Triggering an External Event
When triggering an external event, the spectrometer instructs an external device (typically a lamp such as
the PX-2 or the LS-450) to illuminate immediately prior to spectral acquisition.