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Agilent 1260 Infinity DAD and MWD User Manual
87
Using the Detector
4
Special Settings of the Detector
Table 13
Spectrum Settings
Store
Defines at which points on “signal A” spectra will be taken and saved.
Signal A is used to control the “peak controlled spectra acquisition”; the
other signals have no influence on spectra acquisition.
None
No spectra are taken.
Apex + Baselines
Spectra are taken at the apex and baselines of the peak.
Apex +
Baselines
Spectra are taken at the apex, baselines, upslope, and downslope of the
peak.
All in Peak
All spectra within the peak are taken.
The three spectra acquisition types mentioned above are also referred
to as peak-controlled spectra acquisition. The peak detection is done by
the detector firmware based on the threshold and peakwidth
parameters you set for the DAD. If you want to use peak-controlled
spectra storage, make sure that you set these parameters to recognize
all the peaks of interest. The integration algorithm also includes peak
detection based on the threshold and peakwidth parameters set in the
integration events.
Every 2nd spectrum
Spectra are taken continuously as for All, but only every second
spectrum is stored; other spectra are discarded. This reduces the
amount of data storage necessary.
All
Spectra are taken continuously depending on the setting of the
Peakwidth. Eight spectra are acquired per Peakwidth. The acquisition
time for one spectrum is slightly less than the Peakwidth divided by 8,
that is, greater than or equal to 0.01s and less than or equal to 2.55s.
If there are no peaks in Signal A, there are no spectra. You cannot
process spectra present in other signals.
Range
Range defines the wavelength range for spectral storage.
Limits: 190 to 950 nm in steps of 1 nm for both low and high values. The
high value must be greater than the low value by at least 2 nm.
Step
Step defines the wavelength resolution for spectral storage.
Limits: 0.10 to 100.00 nm in steps of 0.1 nm.
Threshold
The threshold is the height in mAU of the smallest expected peak. The
peak detector ignores any peaks which are lower than the threshold
value and does not save spectra.
Limits: 0.001 to 1000.00 mAU in steps of 0.001 mAU. Usable for modes
Apex + Baselines, Apex + Baselines and All in Peak
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Содержание 1260 Infinity G1315C
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Страница 18: ...18 Agilent 1260 Infinity DAD and MWD User Manual 1 Introduction Bio inert Materials ...
Страница 98: ...98 Agilent 1260 Infinity DAD and MWD User Manual 4 Using the Detector Solvent Information ...
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