HP 53131A, Operating Manual

Page: 109 / 196

Chapter 2 Operating Your Universal Counter
Using the MATH Menu Keys
Operating Guide 2-33
2
To Use the Stats Menu for Automatic and Continuous
Statistical Analysis
Example Procedure for Computing Stats
For demonstration purposes, let’s say you need to know the mean
(average) and minimum risetime values of a digital signal.
Also, you want the Counter to make 20 measurements before it performs
these statistical computations.
Perform the following procedure to accomplish this task.
1 Connect the digital signal to channel 1 input, and set up the Counter to
measure risetime of the signal, using the Time & Period key. (Refer to
the section in this chapter titled “To Measure Rise/Fall Times” if needed.)
2 Press Stats key until N: is displayed.
N: 100 is displayed (100 is the default value).
3 Set N to 20 (since you want the Counter to make 20 measurements before
computing the mean and minimum values) by pressing the appropriate
arrow keys.
N: 20 is displayed.
4 Press Enter key.
NOTE BE SURE to press the Enter key to complete numeric entry.
The Counter is now set to make 20 measurements before computing
statistics.
5 Press Stats key until SHOW: is displayed.
6 Press any one of the arrow keys until SHOW: MEAN is displayed.