Rohde & Schwarz FSW Series - Probe Settings

Configuration
R&S
®
FSW-K7
72User Manual 1173.9240.02 ─ 17
"I + jQ"
The input signal is filtered and resampled to the sample rate of the
application.
Two inputs are required for a complex signal, one for the in-phase
component, and one for the quadrature component.
"I Only / Low IF I"
The input signal at the BASEBAND INPUT I connector is filtered and
resampled to the sample rate of the application.
If the center frequency is set to 0 Hz, the real baseband signal is dis-
played without down-conversion (Real Baseband I).
If a center frequency greater than 0 Hz is set, the input signal is
down-converted with the center frequency (Low IF I).
"Q Only / Low IF Q"
The input signal at the BASEBAND INPUT Q connector is filtered and
resampled to the sample rate of the application.
If the center frequency is set to 0 Hz, the real baseband signal is dis-
played without down-conversion (Real Baseband Q).
If a center frequency greater than 0 Hz is set, the input signal is
down-converted with the center frequency (Low IF Q).
Remote command:
INPut:IQ:TYPE on page 199
Input configuration
Defines whether the input is provided as a differential signal via all 4 Analog Baseband
connectors or as a plain I/Q signal via 2 simple-ended lines.
Note: Both single-ended and differential probes are supported as input; however, since
only one connector is occupied by a probe, the "Single-ended" setting must be used for
all probes.
"Differential"
I, Q and inverse I,Q data
"Single Ended"
I, Q data only
Remote command:
INPut:IQ:BALanced[:STATe] on page 198
Center Frequency
Defines the center frequency for analog baseband input.
For real-type baseband input (I or Q only), the center frequency is always 0 Hz.
Note: If the analysis bandwidth to either side of the defined center frequency exceeds
the minimum frequency (0 Hz) or the maximum frequency (40 MHz/80 MHz), an error
is displayed. In this case, adjust the center frequency or the analysis bandwidth.
Remote command:
[SENSe:]FREQuency:CENTer on page 231
5.4.1.5 Probe Settings
Probes are configured in a separate tab on the "Input" dialog box which is displayed
when you select the INPUT/OUTPUT key and then "Input Source Config".
Input and Frontend Settings