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How to Measure Power
Power Measurement
Agilent 8163A Lightwave Multimeter, Agilent 8164A Lightwave Measurement System, & Agilent 8166A Lightwave
Multichannel System, Fourth Edition
73
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
measured
(dBm) = P
input
(dBm)
−
CAL(dB)
Where,
P
measured
is the adjusted value of the signal read in dBm,
P
input
is the input signal level in dBm, and
CAL
is the calibration offset in decibels (dB).
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
.
Figure 43
Selecting the Power Unit