Measurements
R&S
®
RTP
360User Manual 1337.9952.02 ─ 12
Setup/Hold measurement settings
Setup/Hold measurements analyze the relative timing between two signals: a data sig-
nal and the synchronous clock signal. Setup time is the time that the data signal is
steady before clock edge - the time between a data transition and the next specified
clock edge. Hold time is the time that the data signal is steady after clock edge - the
time between a data transition and the previous specified clock edge.
"Setup/Hold time" measures and displays the setup and hold durations. "Setup/Hold
ratio" measurements return the ratio of the setup time to the sum of hold and setup
time: T
Setup
/
(T
Setup
+
T
Hold
).
The clock edge can be defined, the polarity of the data signal does not matter.
SetupHold Setup
Hold
Clock
Data
Clock slope = Positive Clock slope = Either
If at least one of the setup/hold measurements is selected, more settings appear to
specify the measurement.
"Clock slope"
Sets the edge of the clock from which the setup and hold times are
measured: positive, negative, or either of them. If "Either" is selected,
the clock edges next to the data edge are considered regardless of
the clock slope.
"Clock source"
The "Clock source" is identical to the measurement "Source". It
defines the waveform used as clock in the setup/hold measurement.
"Data source"
The "Data source" is identical to the "2nd Source" of the measure-
ment. It sets the data signal.
"Clock ref
level"
See "Clock ref level" on page 361.
"Data ref level"
See "Data ref level / Reference level" on page 361.
"Threshold"
See "Signal threshold" on page 358.
Remote command:
Clock slope: MEASurement<m>:AMPTime:CSLope on page 1377
Automatic measurements
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