Setting Average, Sweep, and Restart

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:

Step
Notes

1
[Average/Sweep]

2
[Continuous] or [Single]
Each time you press this softkey, the selected option changes.

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).
To set averaging:

Step
Notes

1
Set the number of averages.
a. [Average]
b. Enter the number of averages using the numeric keypad.
c. [Enter]

2
Select the type of averaging you want to apply.
a. [Average/Sweep]
b. [Averaging]
c. [Off], [Running Average], [Max Hold], [Group Average], or [Group Max Average]

NOTE: These two steps can be performed in any order. However, if you turn averaging on and a large number of averages has previously been set, there may be a delay before you can change number of averages.

Setting Restart
When you have averaging turned On and you are in Continuous Sweep mode, you can restart the averaging by pressing the Restart menu key. The Restart key has no effect if you are in Single sweep mode.
To restart averaging:

Step
Notes

1
[Average/Sweep]

2
[Restart]
This key is unavailable or has no effect when Sweep is set to Single. To restart a Single Sweep measurement, press [Single].


	Step	Notes
1	[Average/Sweep]
2	[Continuous] or [Single]	Each time you press this softkey, the selected option changes.


	Step	Notes
1	Set the number of averages. a. [Average] b. Enter the number of averages using the numeric keypad. c. [Enter]
2	Select the type of averaging you want to apply. a. [Average/Sweep] b. [Averaging] c. [Off], [Running Average], [Max Hold], [Group Average], or [Group Max Average]