How To Set The Calibration Offset - Agilent Technologies 8163A User Manual

How to Measure Power
Agilent 8163A Lightwave Multimeter, Agilent 8164A Lightwave Measurement System, & Agilent 8166A Lightwave
Multichannel System, Fourth Edition
Figure 43 Selecting the Power Unit
2 Move to <dBm>, by using the cursor key, and press Enter.

How to Set the Calibration Offset

This is a calibration offset that you can enter to compensate for external optical
circuitry, for example, the Agilent 81022FF Integrating Sphere or a 3 dB coupler.
The calibration offset, [Cal], is automatically subtracted from the input signal.
P (dBm) = P
measured
Where,
P
measured
P
input
CAL
To set the calibration offset to 40.000 dB:
1 Move to the Power Meter channel and press the [Details] softkey.
2 Move to the [Cal] parameter and press Enter.
3 Enter 40.000 and press Enter.
(dBm) − CAL(dB)
input
is the adjusted value of the signal read in dBm,
is the input signal level in dBm, and
is the calibration offset in decibels (dB).
Power Measurement
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