How to Measure Power Power Measurement
Agilent 8163A/B, 8164A/B, and 8166A/B User’s Guide, Fourth Edition 95
1 Move to the Power Meter channel and press the [Details] softkey.
2 Move to the [AvgTime] parameter and press Enter.
3 Move to <1s>, by using the cursor key, and press Enter.
How to Choose the MinMax Mode
NOTE For a Dual Power Sensor, you cannot set the MinMax Mode of the
slave channel, channel 2, directly. By default, the MinMax Mode of the
slave channel, channel 2, is the same as that for the master channel,
channel 1. See Table 8 on page 101 for more details.
MinMax mode measures the incoming power and displays the
minimum value measured, [Pmin], and the maximum value measured,
[Pmax]. The difference between these values,
∆P, is displayed in place
of P, the power value. This mode is intended principally for
polarization dependent measurements, but can be used for other types
of measurement.
You can choose three modes of operation from the MinMax mode
menu:
•<Continuous> mode, which compares each new measured value
with the maximum and minimum values so far, and replaces them
as necessary.
This mode is useful for measuring the Polarization Dependent Loss
(PDL) of a component. Run the application while sweeping the
polarization of the source applied to the component.
•<Window> mode, which compares each new measured value with
the maximum and minimum values of each of the previous N
samples. When a new measurement is taken it is added to a buffer
containing the previous N samples and the oldest measurement is
deleted.
•<Refresh> mode, which adds each new measurement to a buffer. The
minimum and maximum values, in this buffer, are displayed. After
N samples are added to the buffer, the buffer resets and a new
buffer is created.
You can use Window and Refresh modes, for example, when you are
searching for or setting the position of minimum PDL.
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