R&S FSW Series, Руководство пользователя

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Common Measurement Settings
R&S
®
FSW
363 User Manual 1173.9411.02 ─ 43
●
CM-Mode : Common mode input voltage (V
cm
)
Mean voltage between the positive and negative input terminal vs. ground
The R&S FSW supports all probe modes. The mode is configured in the Chap-
ter 8.2.2.2, "Probe Settings" , on page 371.
Offset compensation
The R&S RT-ZM probes feature a comprehensive offset compensation function. The
compensation of DC components directly at the probe tip even in front of the active
probe amplifier is possible with an extremely wide compensation range of ±16
V (±24 V
for P and N modes).
The offset compensation feature is available for every MultiMode setting:
MultiMode
setting Offset compensation Offset compen-
sation range Application
DM-Mode Differential DC voltage ±16 V Probing single-ended signals, e.g. power
rails with high DC component and small AC
signal.
CM-Mode Common mode DC volt-
age ±16 V Measurements of signals with high common
mode levels, e.g. current measurements
with a shunt resistor.
P-Mode DC voltage at positive
input terminal ±24 V Measurement of single-ended AC signals
with high superimposed DC component at
the positive input terminal.
Note : The maximum voltage difference
between the positive and negative input ter-
minals is 16
V.
N-Mode DC voltage at negative
input terminal ±24 V Measurement of single ended AC signals
with high superimposed DC component at
the negative input terminal.
Note : The maximum voltage difference
between the positive and negative input ter-
minals is 16
V.
If the offset for DM-mode or CM-mode is changed, the offsets for the P-mode and N-
mode are adapted accordingly, and vice versa.
8.2.1.2 Receiving and Providing Trigger Signals
Using one of the "TRIGGER INPUT / OUTPUT" connectors of the R&S FSW, the
R&S FSW can use a signal from an external device as a trigger to capture data. Alter-
natively, the internal trigger signal used by the R&S FSW can be output for use by
Data Input and Output