Making Measurements 5
6000 Series Oscilloscope User’s Guide 239
threshold levels which eliminates runt pulses. The X cursors
show what portion of the waveform is being measured. The
Y cursor shows the middle threshold point.
Fall Time
The fall time of a signal is the time difference between the
crossing of the upper threshold and the crossing of the
lower threshold for a negative-going edge. The X cursor
shows the edge being measured. For maximum measurement
accuracy, set the sweep speed as fast as possible while
leaving the complete falling edge of the waveform on the
display. The Y cursors show the lower and upper threshold
points.
Rise Time
The rise time of a signal is the time difference between the
crossing of the lower threshold and the crossing of the
upper threshold for a positive-going edge. The X cursor
shows the edge being measured. For maximum measurement
accuracy, set the sweep speed as fast as possible while
leaving the complete rising edge of the waveform on the
display. The Y cursors show the lower and upper
threshold points.
+ Width
+ Width is the time from the middle threshold of the rising
edge to the middle threshold of the next falling edge. The X
cursors show the pulse being measured. The Y cursor shows
the middle threshold point.
– Width
– Width is the time from the middle threshold of the falling
edge to the middle threshold of the next rising edge. The X
cursors show the pulse being measured. The Y cursor shows
the middle threshold point.
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