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Measuring pulse width
The pulse wid th function measures the amount of time a signal is high or low, as
NOTE
shown in
to the middle threshold of the next falling edge. The measured waveform must
be periodic; its pattern must repeat at equal time intervals.
1 To measure pulse width, position the rotary switch to one of the functions
2 Press
Figure 2-39
The pulse width of the input signal is shown in the primary display. The voltage or
ampere value of the signal is shown in the secondary display. The bar graph does
not indicate duty cycle but indicates the voltage or ampere value of the input
signal.
The pulse width polarity is displayed to the left of the duty cycle value.
indicates a positive pulse width and
change the polarity being measured, press
Press
measurements.
Press
Keysight U1273A/U1273AX User's Guide
Figure
2-37. It is the time from the middle threshold of the rising edge
allowing frequency measurements shown in
until the measurements are shown in the millisecond (ms) unit.
Probe the test points, and read the display.
Pulse width display
to cycle through the frequency, pulse width, and duty cycle
for more than 1 second to exit the pulse width measurement function.
Dual
Exit
Making Measurements
Table
2-20.
indicates a negative pulse width. To
.
Dual
Exit
2
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