Technical data

150 Chapter 5
Adjacent Channel Power
Using the Adjacent Channel Power Measurement
Adjacent Channel Power
Setting Average, Sweep, and Restart
Setting the Sweep
You can select either continuous or single sweep. Continuous sweep provides
repeated, ongoing measurements. Single sweep performs a single measurement that
is repeated only when you push the Single button.
To set sweep:
Setting Averaging
You can choose to have averaging on or off and set the number of averages you want
to take. Averaging only applies to the data, not the trace. You can select from the
following types of averaging:
• Off: Disables averaging.
• Running: Computes the new result as the weighted sum of the last result and the
new measurement. The last result is weighted by (n – 1)/n. The new result is
weighted by 1/n. Each new measurement produces a new result.
• Max Hold: Is not an average, but on a point by point basis, displays the
maximum amplitude for the given frequency or channel since Max Hold was
turned on. It is updated when a new maximum occurs.
• Group Average: Makes the requested number of measurements, averages the
measurement data, and displays the average as a single result trace.
Measurement time will vary based on the requested number of averages and can
take minutes for very large number of averages.
• Group Max Average: Makes the requested number of measurements before
returning a single trace result. This trace is the maximum value seen at each
trace point over the requested number of averages (measurements).
NOTE When measuring Korean PCS signals, the only averaging types available to you are
Step Notes
1 [Average/Sweep]
2 [Continuous] or [Single] Each time you press this softkey, the
selected option changes.