Period; Frequency - Keysight Technologies InfiniiVision 2000 X Series User Manual

14
Measurements

Period

Period is the time period of the complete waveform cycle. The time is measured
between the middle threshold points of two consecutive, like-polarity edges. A
middle threshold crossing must also travel through the lower and upper 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.

Frequency

Frequency is defined as 1/Period. Period is defined as the time between the
middle threshold crossings of two consecutive, like-polarity edges. A middle
threshold crossing must also travel through the lower and upper 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.
See Also •
To isolate an event for frequency measurement
The following figure shows how to use Zoom mode to isolate an event for a
frequency measurement.
You may need to change the measurement window setting so that the
measurement is made in the lower, Zoom window. See
with Zoom Display"
If the waveform is clipped, it may not be possible to make the measurement.
216
"To isolate an event for frequency measurement"
on page 225.
Keysight InfiniiVision 2000 X-Series Oscilloscopes User's Guide
on page 216
"Measurement Window