25
(3)
The baseline flatness is normal if the measurement result is within the following
criterion.
<V-530 criterion>
Within
±
0.001 Abs (1000 200 nm)
<V-550/560/570 criterion> Within
±
0.001 Abs (850 200 nm)
4.4.2 Wavelength Repeatability
Measure the spectrum of the deuterium(D
2
) lamp with an emission line at 656.1 nm
three times repeatedly to check its repeatability.
(1)
Select [Envir] from the main menu to display the [Environment] menu.
(2)
From the [Environment] menu, select [Other] to display the [Other] screen.
(3)
Set the light source to [D2] (to light only the Deuterium lamp). (Refer to Section 9-7
of the Operations manual.)
(4)
Select [Single Beam] from the [Environment] menu to display the [Single Beam]
screen.
(5)
Display the [Parameter] screen and set the following parameters.
V-530 measurement parameters
V-550/560/570
measurement
parameters
Phtmtrc mode
Sam
Phtmtrc mode
Sam
Response
Fast
Response
Fast
Start WL
658 nm
Band width
0.5 nm
End WL
654 nm
Start WL
658 nm
Data interval
0.1 nm
End WL
654 nm
Scan. speed
40 nm/min
Data interval
0.025 nm
No. of Cycles
3
Scan. speed
10 nm/min
Lower scale
0
No. of Cycles
3
Upper scale
100
Lower scale
0
Upper scale
100
HT Voltage
300 V
Note: PMT voltage
varies
with instrument. Set accordingly.
(6)
Measure the single beam spectrum with the sample chamber empty three times to
obtain three D
2
lamp spectra with an emission line at 656.1 nm. A measurement
example is shown in Fig 4.4.
(7)
The wavelength repeatability is normal if it is within the following criterion.
Criterion:
Within
±
0.1 nm of the average value of the peak of the emission line
spectrum at 656.1 nm
(8)
Display the [Others] screen again and return to the original settings (WI and D2).
Содержание V-530
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