R&S FSW Series, Руководство пользователя

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Common Measurement Settings
R&S
®
FSW
370 User Manual 1173.9411.02 ─ 43
An internal YIG-preselector at the input of the R&S FSW ensures that image frequen-
cies are rejected. However, this is only possible for a restricted bandwidth. To use the
maximum bandwidth for signal analysis you can disable the YIG-preselector at the
input of the R&S
FSW, which can lead to image-frequency display.
Note that the YIG-preselector is active only on frequencies greater than 8 GHz. There-
fore, switching the YIG-preselector on or off has no effect if the frequency is below that
value.
In order to make use of the optional 90 GHz frequency extension (R&S FSW-B90G),
the YIG-preselector must be disabled.
Note:
For the following measurements, the YIG-Preselector is off by default (if available).
●
I/Q Analyzer
●
All slave applications in MSRA operating mode
●
Real-Time (and thus in all slave applications in MSRT operating mode)
●
Multi-Carrier Group Delay
●
GSM
●
VSA
Remote command:
INPut<ip>:FILTer:YIG[:STATe]
on page 1070
Preselector Adjust
Activates or deactivates the preselector adjustment.
This function is only available for instrument modelsR&S FSW43/50/67/85, for fre-
quency sweeps in the Spectrum application.
Generally, sweeps exceeding a certain span use different signal paths to measure the
required spectrum. In order to minimize the hysteresis impact of the YIG preselector at
the transition frequencies, you can activate this function. It is applied only when the
YIG-preselector is active.
If activated, the R&S FSW automatically performs a short internal adjustment. If you
change the frequency or span settings, the adjustment is repeated.
If activated, "PRADJ" is indicated in the window title bar.
Remote command:
CALibration:PADJust[:STATe]
on page 1067
Input Connector
Determines which connector the input data for the measurement is taken from.
"RF" (Default:) the RF INPUT connector
"RF Probe" The RF INPUT connector with an adapter for a modular probe
This setting is only available if a probe is connected to the RF INPUT
connector.
"Baseband
Input I" The optional Baseband Input I connector
This setting is only available if the optional Analog Baseband Inter-
face is installed and active for input. It is not available for the
R&S
FSW67.
For R&S FSW85 models with two input connectors, this setting is
only available for "Input 1".
Data Input and Output