User manual

Waveform Analysis
R&S
®
Scope Rider RTH
75User Manual 1326.1578.02 ─ 04
3.2.2.1 Time Measurements
Meas. type Symbol Description Graphic / formula Source
Period T
in s
Time of the first period, measured on the
50% level. The measurement requires at
least one complete period of the signal.
T
50%
Analog, math,
reference, digital
Frequency f
in Hz
Frequency of the signal, reciprocal value
of the measured first period.
T
f = 1 / T
50%
Analog, math,
reference, digital
Rise time tR
in s
Rise time of the first rising edge. This is
the time it takes the signal to rise from
the 10% level to the 90% level.
90%
10%
tR
Analog, math,
reference
Fall time tF
in s
Fall time of the first falling edge. This is
the time it takes the signal to fall from the
90% level to the 10% level.
90%
10%
tF
Analog, math,
reference
Positive pulse
width
t+
in s
Duration of the first positive pulse: time
between a rising edge and the following
falling edge measured on the 50% level.
50%
t+
Analog, math,
reference, digital
Negative pulse
width
t-
in s
Duration of the first negative pulse: time
between a falling edge and the following
rising edge measured on the 50% level.
50%
t-
Analog, math,
reference, digital
Positive duty cycle Dty+
in %
Width of the first positive pulse in relation
to the period in %. The measurement
requires at least one complete period of
the signal.
Dty+ = t+ / T * 100%
100%0% T
t+
Analog, math,
reference, digital
Negative duty cycle Dty-
in %
Width of the first negative pulse in rela-
tion to the period in %. The measure-
ment requires at least one complete
period of the signal.
Dty- = t- / T * 100%
100%0% T
t-
Analog, math,
reference, digital
Automatic Measurements