Using the Spectrometer with Spectrum . 51
Look Ahead
Look Ahead can be selected in the Setup Instrument Advanced tab (Figure 18).
What is Look Ahead?
Look Ahead is a novel system where the spectrometer scans continuously and uses the
properties of the measured spectrum to identify changes corresponding to sample removal,
sample insertion, or sample change, automatically.
This information is used to identify the scans that are being collected, and to accumulate
sample scans. This can decrease the overall scanning time required for those samples that
require scan accumulation.
What does Look Ahead do?
If Look Ahead has been enabled, the spectrometer scans continuously. When you request a
sample scan, the scan collected is compared to the scans that have already been collected. If
identical scans are found, the number of scans requested is decreased by the number of
scans found, so decreasing the overall scanning time.
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