Ripple Test; Concept Of Ripple Test - Agilent Technologies ENA Series User Manual

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Ripple Test

Independently of the limit test, you can evaluate the measurement results on a pass/fail

basis by setting a limit for the ripple. This function is called the ripple test.

The ripple test is a function for evaluating the results on a pass/fail basis based on the

ripple limit, which is set using the ripple limit table. You can specify up to 12 frequency

bands, which permits a test for each frequency band.

The ripple test judges the measurement as "Pass" when the ripple value specified with the

ripple limit is not exceeded by any of the measurement points on the trace; otherwise, it

judges the measurement as "Fail." For the measurement points in a stimulus range without

a specified ripple limit, the test judges the measurement as "Pass."

The measurement point alone is the target of evaluation for pass/fail. The interpolated part

between measurement points is not evaluated.

The ripple limit is defined with the start point stimulus value, end point stimulus value,

ripple limit value, and type (on/off.) For detailed information, see "Configuring ripple

limit" on page 385.

While the ripple test function is turned on, the measurement points corresponding to a

"fail" judgment will be indicated in red on the screen, and the trace's test results based on

the results of each measurement point will be displayed (judged as "fail" if one or more red

measurement point exist on the trace). For information on how to display the results, see

"Turning on/off ripple test and displaying results" on page 388. You can also confirm the

channel test results on the screen (judged as "fail" if one or more failed traces appear in the

limit test, ripple test, or bandwidth test within the channel).

E5070b E5071b