8163A/B, 8164A/B, 8166A/B User’s Guide 171
Tunable Lasers 5
The Auto Calibration mode is NOT stored in the Instrument Settings.
After reboot or preset the Auto Calibration is always on.
When Auto Cal Off is selected the digital signal modulation feature is not
available.
See the table below for the wavelength accuracies of ACC1, ACC2, and
ACC3.
Wavelength accuracy (typ.)
Class Max Temperature
Deviation
Absolute Relative
ACC1 ± 4.4K refer to specification
ACC2 ± 10K ± 8 pm ± 3 pm
ACC3 ± 25K ± 10 pm ± 5 pm
To get the specified performance ensure the warm-up time has passed
and execute then a Lambda Zero before switching Auto Cal off.
If Lambda Zero is recommended (Accuracy Class is not ACC1) the 10th
bit of the “questionable condition register” is set (See the 8163A/B
Lightwave Multimeter, 8164A/B Lightwave Measurement System,
8166A/B Lightwave Multichannel System Programming Guide). This is
done in both Auto Cal On and Off.
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