Measurements
R&S
®
RTM3000
151User Manual 1335.9090.02 ─ 09
8.2.2.1 Horizontal measurements (Time)
Meas. type Symbol Description Graphic / formula
Frequency f
in Hz
Frequency of the signal, reciprocal value of the measured
first period.
T
f = 1 / T
ML
Period T
in s
Time of the first period, measured on the middle reference
level. The measurement requires at least one complete
period of the signal.
T
ML
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+
Duty Cycle - Dty-
in %
Width of the first negative 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-
Rise Time tr
in s
Rise time of the first rising edge, the time it takes the signal
to rise from the lower reference level to the upper reference
level.
UL
LL
Rise
Fall Time tf
in s
Fall time of the first falling edge, the time it takes the signal
to fall from the upper reference level to the lower reference
level.
UL
LL
Fall
Pulse Width + PW+
in s
Duration of the first positive pulse: time between a rising
edge and the following falling edge measured on the middle
reference level.
ML
t+
Pulse Width - PW-
in s
Duration of the first negative pulse: time between a falling
edge and the following rising edge measured on the middle
reference level.
ML
t-
Delay to Trigger Dly Trg
in s
Time between the trigger point and a selectable edge, mea-
sured on the middle reference level. If the edge is to the left
of the trigger (before trigger), the result is negative.
t
Automatic measurements
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