Measuring Signals 
Step 
2: 
Push the left bezel button to place the selection box around 
"l/AT." Push the 
DISPLAY 
button again to return to the storage acquisi- 
tion display. 
Step 3: 
Position a cursor on the rising edge of the waveform where it 
crosses a 
graticule line. 
Step 
4: 
Push the 
CURSORS 
knob in to select the other cursor and 
position it at the 
same 
transition point on the 
next 
cycle of the signal 
(Figure 3-37). 
Step 
5: 
Note the l/AT (frequency) readout in the upper right corner of 
the display. 
Figure 3-37:  Cursor Frequency Measurement 
Measuring Rise Time and 
Fall 
Time 
Rise time is a measure of the time between the 10% and 90% points on the 
leading edge of a waveform (Figure 3-38). Fall time is a measure of time 
between the 
90% 
and 10% points on the trailing edge of a waveform (Fig- 
ure 3-39). 
In 
Detail 
iG