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2-5-6 User Calibration
This function displays values compensated by the arbitrarily
specified user calibration value (CAL). CAL can be set in the
range from -10 dB to 25 dB. The active power range and the
setting range for the relative value measuremtent reference value
is shifted by the value of CAL. The CAL value can be entered
automatically and edited if necessary. The ON status of the
calibration function and the CAL value are saved even when the
power is turned OFF.
The following are two examples of usage.
1) Measurement of high output level light that exceeds the upper
limit of the power range (see 3-6, “High Power Measurement”).
In this case, by storing the amount of attenuation from a
jointly-used fixed optical attenuator as the CAL value on the
instrument, the measured values can be read directly.
2) Minute adjustment for differences in instruments when using
another optical powermeter.
You can cancel out the differences in measured values
between two optical powermeters, which is usefull for loss
measurements.
Measurement of high output light requries a separate fixed
optical attenuator in addition to this instrument.
Use a fixed optical attenuator that supports the optical levels
you will measure.