Applications The Stability Application
174 Agilent 8163A Lightwave Multimeter, Agilent 8164A Lightwave Measurement
System, & Agilent 8166A Lightwave Multichannel System, Fourth Edition
The Stability application differs from the “The Logging Application” on
page 164 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 126. 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).
The Stability application differs from “The Logging Application” on page 164
because you may use auto-ranging mode, see step 9 on page 177 for more
information.
All results can be:
• displayed on the screen,
• printed out to hardcopy, or
• saved to disk drive of your Agilent 8164A Lightwave Measurement System.
How to Set Up a Stability Function
To set up a stability function:
1 Press the Appl hardkey. The Applications menu, as shown in Figure 117,
appears.
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