Gentec-EO QE and XLE4 - Manual (Page 35)

QE Series Joulemeter Instruction Manual Version 3.0 April 2014 35
and position on the detector).
Step 5: Repeat the first measurement (Step 3) to make sure that nothing changed during the procedure
to invalidate the calibration. A change larger than the uncertainty of your measurements means that
something in the laser or environment changed. You can add this to your ± uncertainty when you use the
attenuator or try to stabilize the laser and environment and begin again with Step 3.
The correction multiplier for the MAESTRO and an Oscilloscope will be given by:
attenuator with Reading
attenuator without Reading

f
T (No unit)
Now use this calibration factor in the correction menu for the “Attenuator/Diffuser” when using it at the
wavelength established in Step 1.