Baseline Correction; Auto Calibration And Self-Diagnosis Functions - Hitachi U-2910 Instruction Manual

2.4 Measuring Functions

2.4.6 Baseline Correction

2.4.7 Auto Calibration and Self-Diagnosis Functions

● Smoothing
Smoothing the measured spectrum is available. This is useful to
eliminate noise on the spectrum.
● Differentiation
Spectrum can be differentiated. Derivative order, smoothing
order, number of data can be specified as desired.
● Arithmetic Operation between Spectra
Applying the four arithmetic operations between spectra is
available; or multiplying operation using a coefficient over the
displayed spectrum is available.
● File Conversion
Converting files into ASCII text file and JCAMP-DX file is
available
● Font for Displaying and Printing
Font, style, and size of characters for displaying and printing are
changeable as desired.
The baseline is stored in the backup RAM in the spectrophotometer
main unit. Data is retained even if the power is turned OFF.
● System baseline
● User baseline
Model U-2910 is equipped with the following auto calibration and
self-diagnosis functions.
(1) Memory (ROM/RAM) check
(2) Wavelength drive system check
(3) WI lamp lighting status check
(4) D lamp lighting status check
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(5) 656.1 nm wavelength check
(6) Auto wavelength calibration; auto calibration taking emission
lines of D lamp as reference wavelength
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(7) Baseline correction
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