Power Measurement How to Measure Power
76 Agilent 8163A Lightwave Multimeter, Agilent 8164A Lightwave Measurement
System, & Agilent 8166A Lightwave Multichannel System, Fourth Edition
Refer to “Slot and Channel Numbers” on page 36 for information on channel
numbers.
To return to setting a constant reference level:
1 Move to the Power Meter channel and press the [Details] softkey.
2 Move to the [Ref Mode] parameter and press Enter.
3 Move to the <Va l ue> menu option and press Enter.
How to Set the Wavelength
This is the wavelength value. The responsivity of the Power Meter varies with
wavelength. For accurate power measurement, you need to input the wavelength
of the optical input. To set the wavelength to 1545.000 nm:
1 Move to the Power Meter channel and press the [Details] softkey.
2 Move to the [λ] parameter and press Enter.
3 Enter 1545.000 and press Enter.
How to Remove Electrical Offsets
Optical Power Meters measure optical power by converting optical power to
electrical power, and then measuring electrical power. An electrical offset is
electrical power that is always present, even if there no optical power is input. If
electrical offsets are not removed, they affect the accuracy of power
measurement.
Figure 44 Referencing Another Channel
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