R&S RT-ZM, Руководство пользователя

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Features and characteristics of modular probes
R&S
®
RT
‑
ZM
37 User Manual 1419.3128.02 ─ 05
MultiMode
setting
Offset compensation Offset com-
pensation
range
Application
P-Mode DC voltage at positive
input terminal
±24 V Measurement of single-ended AC sig-
nals with high superimposed DC com-
ponent at the positive input terminal.
Note : The maximum voltage difference
between the positive and negative input
terminals is 16 V.
N-Mode DC voltage at nega-
tive input terminal
±24 V Measurement of single ended AC sig-
nals with high superimposed DC com-
ponent at the negative input terminal.
Note : The maximum voltage difference
between the positive and negative input
terminals is 16 V.
You can set the offset compensation at the oscilloscope in various ways:
●
Use the vertical [Position] knob. Before adjusting the offset, make sure that
the function of the knob is set to "Offset".
●
Use the probe settings menu of the channel to which the probe is connected.
●
Use the micro button to compensate the DC component of the measurement
signal, which is helpful during measurements of input signals with different DC
offsets. Therefore, assign "Set offset to mean" to the micro button function.
Setting an offset compensation voltage and then switching the probe measure-
ment mode does not affect the offset settings.
For example, you can measure a differential signal superimposed with a high DC
common mode component. First switch to CM-mode and compensate the com-
mon mode offset using the vertical [Position] knob until the measurement trace is
in the center of the oscilloscope screen. Then switch back to DM-mode to mea-
sure the differential signal.
For more details on setting the offset compensation voltage, refer to the user
manual of your Rohde
& Schwarz oscilloscope.
4.3.1 Differential offset
The differential offset function can compensate a DC voltage applied between the
positive (V
p
) and the negative (V
n
) input terminal at the probe tip. Setting a differ-
ential offset compensation in DM measurement mode is directly visible on the
oscilloscope screen as a voltage offset of the measured waveform.
Offset compensation