Common Measurement Settings
R&S
®
FSW
315User Manual 1173.9411.02 ─ 19
source to this connector in the RF input configuration (see "Input Connector"
on page 320).
The probe's attenuation is compensated automatically by the R&S FSW using a trans-
ducer named "Probe on Baseband Input I". (The probe can only be connected on I, as
only input at the I connector can be redirected to the RF path). A comment is assigned
that includes the type, name and serial number of the detected probe. The transducer
is deleted as soon as the probe is disconnected.
For details on transducers see chapter 9.2, "Basics on Transducer Factors",
on page 566.
For information on using probes for input see chapter 6.2.1.3, "Using Probes",
on page 315.
6.2.1.3 Using Probes
As an alternative means of input to the R&S FSW, active probes from Rohde&Schwarz
can be connected to the optional BASEBAND INPUT connectors, if the Analog Base-
band Interface (option R&S FSW-B71) is installed. These probes allow you to perform
voltage measurements very flexibly and precisely on all sorts of devices to be tested,
without interfering with the signal.
Connecting probes
Probes are automatically detected when you plug them into the upper BASEBAND
INPUT connectors on the front panel of the R&S FSW. The detected information on the
probe is displayed in the "Probes" tab of the "Input" dialog box, individually for each
connector.
Availability of probe input
Analog baseband input from connected probes can only be analyzed in applications
that support I/Q data processing and the Analog Baseband Interface (R&S FSW-B71),
such as the I/Q Analyzer, the Analog Demodulation application, or one of the optional
applications.
Frequency sweep measurements with probes
Probes can also be used as an alternative method of providing RF input to the
R&S FSW. In this case, the probe must be connected to the BASEBAND INPUT I con-
nector, and the input is redirected to the RF input path (see chapter 6.2.1.2, "RF Input
from the Analog Baseband Connector", on page 314). As opposed to common RF
input processing, a transducer is activated before the common process to compensate
for the additional path of the redirected signal. Probe signals that are redirected to the
RF input path can also be analyzed in the Spectrum application of the R&S FSW
base unit. Then you can perform RF measurements (measurements in the time or fre-
quency domain) on the input from a probe.
Data Input and Output
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