3-19
IM AQ6370D-01EN
Preparing for Measurement
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3
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9
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11
App
Index
Wavelength Calibration Using an External Light Source
Instead of using the internal reference light source, it is also possible to calibrate the
instrument using an external light source. However, the following light sources cannot be
used for wavelength calibration.
• If the set wavelength is not the same as that of the calibration light source.
• If the wavelength error of the instrument is outside of ±0.5 nm.
(Readjustment required. Please contact your nearest Yokogawa representative.)
• If you are using a reference light source with multiple absorption lines, and the
instrument’s wavelength shift is greater than the wavelength interval of the absorption
lines (with the result that an adjacent absorption line is used as the reference
wavelength).
Connecting the External Light Source
1.
Turn the power to the instrument ON.
Press the MAIN POWER
switch and press the
POWER
switch.
For instructions on turning the power ON and OFF, see section 3.4.
2.
Use a 9.5/125 µm SM optical fiber to connect the external light source’s optical
output connector with the optical input connector.
Light source
Optical fiber
AQ6370D
Setting the Type of External Light Source and Calibration Wavelength Value
3.
Press
SYSTEM
. The soft key menu is displayed.
4.
Press the
WL CALIBRATION
soft key.
Select the type of external light source (laser-type external light source or gas cell
absorption line type external light source) and set the calibration wavelength value.
There are three different ways to set the wavelength value.
3.7 Wavelength Calibration