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Measurements
R&S
®
RTA4000
152
User Manual 1335.7898.02 ─ 08
Meas. type
Symbol
Description
Graphic / formula
Delay
Dly
in s
Time difference between two slopes of the same or different
waveforms, measured on the middle reference level. The
settings of slope selection are described in
A negative result indicates that the slope of the second
source comes before the slope of the first source.
t
S2
S1
Phase
Phs
in °
Phase difference between two waveforms, measured on the
middle reference level.
Phase =
Δ
t / T * 360°
t
2
1
360°
0°
Slew rate+
Steepness of the first rising edge, measured between the
lower and the upper reference levels.
Slewrt =
Δ
V /
Δ
t
Δt
ΔV
UL
LL
Slew rate-
Slewrt-
Steepness of the first falling edge, measured between the
upper and the lower reference levels.
Slewrt =
Δ
V /
Δ
t
UL
LL
Δt
ΔV
Burst Width
Bst
Duration of one burst, measured on the middle reference
level from the first edge to the last edge.
8.2.2.2
Vertical measurements (Amplitude)
The unit of most amplitude measurement results depends on the measured source.
Meas. type
Symbol
Description
Graphic / formula
Amplitude
VAmp
Difference between the top level and the base level of the
signal. The measurement requires at least one complete
period of the signal.
Top
Base
Amplitude
Top Level
Vtop
High level of the displayed waveform - the upper maximum
of the sample distribution, or the mean value of the high
level of a square wave without overshoot. The measure-
ment requires at least one complete period of the signal.
Top
Base Level
Vbase
Low level of the displayed waveform - the lower maximum
of the sample distribution, or the mean value of the low level
of a square wave without overshoot. The measurement
requires at least one complete period of the signal.
Base
Automatic measurements