Hitachi ZA3000 Series Instruction Manual page 45

3.1 Generation of Measurement Conditions
The analytical wavelengths can be checked via [Tools]-
[Analytical Information] on the Method window.
Input range for wavelength is from 190.0 to 900.0 nm.
NOTES: 1. The Sensitivity Ratio is the rough value (Literature
value) when the highest sensitivity wavelength is
assumed to be "1". There is a difference of
several tens percent depending on the condition,
and use it only as a guide.
2. In same cases, it is necessary to change the slit
width according to wavelength for the separation
of the neighboring line.
Change the slit width referring to the
recommended slit width described in "ANALYSIS
GUIDE (Chapter 7 ELEMENTAL DATA)".
 Wavelength Setting
Normally set at Automatic, and need not be changed.
Automatic :
Direct
 Slit Width
Specify a slit width for the monochromator. Normally
an optimum value for the set element (default value) is
set, and need not be changed.
Change the slit width if necessary when the wavelength
or other item has been changed. When there is no
neighboring line, light quantity can be increased and
noise can be reduced by widening the slit. In cases
where there is a neighboring line emitted by the hollow
cathode lamp, it should be excluded from the
monochromator by narrowing the slit.
Available settings: 0.2, 0.4, 1.3, 2.6 nm
3 - 6
A peak of lamp energy near the
measuring wavelength is searched for
and set automatically.
: Wavelength is driven directly to the set
wavelength. This mode is dependent
on the accuracy of the wavelength drive
mechanism, and will not necessarily
move to the peak position of lamp
energy.