4.2.3
4 - 9
4.2.3 Bandpass
[Summary]
To determine the spectral width of monochromatic light emitted
from the exit slit of the monochromator in terms of the wavelength
width (bandpass).
[Procedure]
1. Set the measurement conditions as follows:
‹Measurement menu›
Measurement mode
Wavelength scan
‹Measuring condition›
Data mode
E(R)
Start wavelength (nm)
660
End wavelength (nm)
650
Upper scale-end
500
Lower scale-end
0
Scan speed (nm/min)
100
‹System condition›
Response
Fast
Light source switching
D
2
lamp only
Light source switching
wavelength (nm)
340.0
D
2
lamp
ON
WI lamp
ON
2. After setting up the above conditions, press the
Measurement Screen key. The measurement screen will then
appear on the display.
3. Make sure that no sample is placed in the sample
compartment; then, press the Start key. (Measurement
starts.)
4. On completion of the measurement, press Print key. If
necessary, print out the spectrum after adjusting the scale.
5. Determine the bandpass at 1/2 of the maximum peak height of
the spectrum attained.
Wavelength width (Bandpass)
Ener
gy
Wavelength
A
0
A
2
