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Agilent InfinityLab LC Series 1260 Infinity II FLD User Manual
3
Using the Fluorescence Detector
Acquire Spectra (G7121B Only)
Acquire Spectra (G7121B Only)
Acquire Spectra
(G7121B ONLY)
If you choose multiple excitation or emission wavelengths, you can
also choose to acquire spectra.
None
: No spectra are taken.
Apex
: A spectrum is acquired at the apex of the peak.
All in Peak
: All spectra within the peak are acquired.
All
w/o signal: All flashes are used for spectra acquisition. The
mean value of all measured wavelengths is shown on channel A.
This setting is useful for unknown spectra. Spectra are acquired
continuously depending on the settings of the range and Step.
NOTE
: If there are no peaks in Signal A, there are no spectra.
Scan Range
: These two fields define the wavelength range for
spectral storage.
Limits (Ex and Em): 200 – 1200 nm in steps of 1 nm.
Step
: Step defines the wavelength resolution for spectral storage.
Limits: 1 – 20 nm in steps of 1 nm.
Threshold
: The Threshold is the height in LU (Luminescence Units)
of the smallest expected peak. The peak detector ignores any peaks
that are lower than the threshold value and does not save spectra.
Limits: 0.001 – 1000 LU.
Acquisition time/rate
The
acquisition time
(in ms) for a single spectrum under the
specified conditions is calculated and displayed.
The
acquisition rate
depends on:
•
the number of additional signals specified
•
the scan range of spectral acquisition
•
the step size (wavelength resolution)
Fit Spectral Range
Select Fit Spectral Range to adjust the spectral range so that there is
always a difference of at least 25 nm between the excitation
wavelength and emission wavelength. This ensures that no first
order stray light is measured due to the excitation and emission
wavelengths being too close. If the range of the emission spectra
overlaps with the excitation wavelength, first order stray light adds
spectral bands in the emission spectra.
Multi Emission
The lower emission wavelength of the resulting spectra is set to be
at least 25 nm higher than the excitation wavelength. The upper
wavelength is adjusted according to the chosen step width.
Example: Ex: 280 nm, Em: 300 – 400 LU step 10 — Resulting spectra
will have 300 – 395 nm
Multi Excitation
The upper excitation wavelength of the resulting spectra is set to be
at least 25 nm lower than the emission wavelength. The upper
wavelength is adjusted according to the chosen step width.
Example: Em: 350 nm, Ex: 300 – 400 nm step 10 — Resulting spectra
will have 300 – 320 nm
Data rate
The data rate is calculated according to the specified scan
conditions.
Содержание G7121A
Страница 86: ...86 Agilent InfinityLab LC Series 1260 Infinity II FLD User Manual 4 Preparing the Module Solvent Information ...
Страница 230: ...230 Agilent InfinityLab LC Series 1260 Infinity II FLD User Manual 10 Parts for Maintenance and Repair Kits ...
Страница 264: ...264 Agilent InfinityLab LC Series 1260 Infinity II FLD User Manual 12 Hardware Information Early Maintenance Feedback ...
Страница 281: ...Agilent InfinityLab LC Series 1260 Infinity II FLD User Manual 281 Index ...