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IM AQ6360-02EN
Maintenance
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App
Index
4.3 Inspection of Wavelength Accuracy
Perform a check of the instrument’s wavelength accuracy.
Use a light source such as a gas laser whose wavelength accuracy is known.
Light source
9.5/125 µm SM optical fiber
AQ6360
Procedure
1.
Connect a light source to the instrument as shown in the figure above, then
measure spectrums of the light source.
Check that the center wavelength (3 dB THRESH LEVEL (threshold value)) of the measured
spectrum is matched to the wavelength of the light source (within the wavelength accuracy
specifications).
For details, see section 5.1, “Spectral Width Measurement,” in IM AQ6360-01EN or chapter 5,
“Specifications,” in this manual.
2.
If the wavelength error is large, perform wavelength calibration using the built-in
reference light source (/LFC, /LSC option).
For the calibration procedure, see section 2.1, "Wavelength Calibration," in IM AQ6360-
01EN.
3.
For performing wavelength calibration, check wavelength accuracy again
according to procedure.
Note
If the wavelength error of the instrument is outside of [+/-] 5 nm, you cannot perform
wavelength calibration with the internal reference light source (/LFC, /LSC option). In this case,
readjustment is necessary. Please contact your nearest Yokogawa representative.
Summary of Contents for AQ6360
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