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Measurements
R&S
®
MXO 4 Series
211User Manual 1335.5337.02 ─ 05
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User defined: Enter "Upper level", "Middle level", and "Lower level".
For example, for "5/50/95" the levels are set to the following values:
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Lower level = 5% of the signal amplitude
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Middle level = 50% of the signal amplitude
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Upper level = 95% of the signal amplitude
Remote command:
REFLevel<rl>:RELative:MODE on page 544
Upper level, Middle level,Lower level ← Relative Level mode
Define the reference levels in percent, if "Level mode" is set to "User-defined".
Remote command:
REFLevel<rl>:RELative:LOWer on page 543
REFLevel<rl>:RELative:MIDDle on page 543
REFLevel<rl>:RELative:UPPer on page 544
Hysteresis
Defines a hysteresis for the middle reference level. A rise or fall from the middle refer-
ence value that does not exceed the hysteresis is rejected as noise.
Remote command:
REFLevel<rl>:ABSolute:HYSTeresis on page 541
REFLevel<rl>:RELative:HYSTeresis on page 543
9.2.4 Measurement types
The R&S MXO 4 provides many measurement types to measure time and amplitude
characteristics, and to count pulses and edges.
9.2.4.1 Horizontal measurements (time)
Meas. type Symbol Description/result
Rise Time RTime 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.
Fall Time FTime 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.
Pos. pulse PPuls Duration of the first positive pulse: time between a rising edge and the following falling edge
measured on the middle reference level.
Neg. pulse NPuls Duration of the first negative pulse: time between a falling edge and the following rising edge
measured on the middle reference level.
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.
Frequency Freq Frequency of the signal, reciprocal value of the measured first period.
Automatic measurements
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