6 MEASUREMENT DATA ANALYSIS
6.8 Ripple Limit Test
Ripple limit test is an automatic pass/fail check of the measured trace data. The trace is
checked against the maximum ripple value (ripple limit)defined by the user. The ripple
value is the difference between the maximum and minimum response of the trace in the
trace frequency band.
The ripple limit can include one or more segments (See figure 6.18). Each segment
provides the ripple limit for the specific frequency band. A segment is set by the
frequency band and the ripple limit value.
Figure 6.18 Ripple limits
The ripple limit settings are performed in the ripple limit table. Each row of the table
describes the frequency band the ripple limit value. The ripple limit table editing is
described below. The table can be saved into a *.lim file.
The display of the limit lines on the screen can be turned on/off by the user.
The result of the ripple limit test is indicated in the upper right corner of the graph. If
the measurement result passed the limit test, you will see the trace number and the
result: Ripl1: Pass.
If the measurement result failed, the result will be indicated in the following ways (See
§Ripl1: Fail will be displayed in upper right corner of the graph;
§Fail sign will be displayed in red in the center of the window;
§You will hear a beep.
Fail sign and the beep can be disabled by the user. For beep deactivation see section 8.5.