The Stability Application Applications
Agilent 8163A/B, 8164A/B, and 8166A/B User’s Guide, Fourth Edition 237
The Stability Application
The Stability data acquisition application logs a series of power
measurements for a number of Power Meter channels, plots the results
as a graph, and generates a statistical analysis of the results.
The Stability application differs from the “The Logging Application”
on page 225 because you set the averaging time, the total time, and the
maximum number of measurements and all power measurements and
the instrument calculates a period time, a new measurement is started
after the completion of every period time. Period time may be greater
than or equal to the averaging time you set and is always greater than
or equal to 100 ms.
This leaves the following two possibilities:
• The averaging time is less than the period time, there is a dwell time
between the commencement of each power measurement, as shown
in Figure 153. This can happen because:
– the maximum number of power measurements multiplied by the
averaging time is less than the total time or
– the averaging time is less than 100 ms.
• The averaging time is equal to the period time, all power
measuremant are performed without any dwell time.
NOTE The total time concludes after the last dwell time period, not after the
last averaging time period.
The Stability application enables you to make periodic power
measurements over a relatively long time period (23 hours, 59 minutes
and, 59 seconds).
Figure 153 Example Stability Application
Averaging Time
Period Time
t
12345
Dwell Time
Total Time
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