69
Setting Up the System
Selecting the Wavelength Calibration and Its Function
Selecting the Wavelength Calibration Data
You enter the user wavelength calibration data over the GPIB (see
“User Calibration Commands” on page 123).
Using your own wavelength calibration data, you can use the
attenuator to compensate for the total wavelength dependence of
your hardware configuration.
NOTE If you are using the instrument in an environment where the
temperature changes, you should not use the user wavelength
calibration data, as it lacks correction for temperature changes.
To select the wavelength calibration data to use
1. Press S
YST repeatedly until USERCAL is shown at the bottom of
the display.
2. Select the wavelength calibration data using the Modify keys.
OFF means that the instrument uses the factory-made
wavelength calibration data
ON means that the user wavelength calibration data is used.
While it is ON, USERCAL is shown at the bottom left of the
display (U/L-CAL is shown if the LAMBDCAL is also on).
Figure 5-2 The USERCAL Indicator on the Display
Resetting the Wavelength Calibration Data Set
To reset USERCAL, press and hold SYST until the value resets (this
takes approximately two seconds).
USERCAL resets to OFF.
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