R&S FSW-K7 User Manual page 32

®
R&S FSW-K7
probe is displayed in the "Probes" tab of the "Input" dialog box, individually for each
connector.
Single-ended and differential probes
Both single-ended and differential probes are supported as input; however, since only
one connector is occupied by a probe, the "Input Configuration" setting for the "Analog
Baseband" input source must be set to "Single-ended" for all probes (see
figuration"
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
from the Analog Baseband
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 frequency
domain) on the input from a probe.
Microbutton action
You can define an action to be performed by the R&S FSW when the probe's microbut-
ton (if available) is pressed. Currently, a single data acquisition via the probe can be
performed simply by pressing the microbutton.
Impedance and attenuation
The measured signal from the probe is attenuated internally by the probe's specific
attenuation. For probe signals that are redirected to the RF path, the attenuation is
compensated using a transducer (see
input"
For analog baseband input, the attenuation is compensated without a transducer. In
this case, higher levels are available for the full scale level.
A fixed impedance of 50 Ω is used for all probes to convert voltage values to power
levels.
User Manual 1173.9240.02 ─ 23
on page 69).
Connector",
on page 31). The reference level is adjusted automatically.
Receiving Data Input and Providing Data Output
Chapter 4.7.2, "RF Input
on page 31). As opposed to common RF input
"Frequency sweep measurements on probe
Measurement Basics
"Input Con-
32