Keysight U1271A Guia Del Usuario página 104

2 Making Measurements
Measuring pulse width
The pulse width function measures the amount of time a signal is high or low, as
shown in
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.
104
Figure 2-37. It is the time from the middle threshold of the rising edge to
allowing frequency measurements shown in
until the measurements are shown in the millisecond (ms) unit.
Probe the test points and read the display.
Pulse wid th display
to cycle through the frequency, pulse width, and duty cycle
Figure 2-36.
indicates a negative pulse width. To
.
Dual
E xit
Keysight U1271A/U1272A User's Guide