Rohde & Schwarz FSWP Series - 7 How to Work with I;Q Data; How to Perform Measurements in the I;Q Analyzer Application

How to Work with I/Q Data
R&S
®
FSWP
72User Manual 1177.5856.02 ─ 07
7 How to Work with I/Q Data
The following step-by-step procedures demonstrate in detail how to perform various
tasks when working with I/Q data.
● How to Perform Measurements in the I/Q Analyzer Application............................. 72
● How to Export and Import I/Q Data.........................................................................73
7.1 How to Perform Measurements in the I/Q Analyzer
Application
The following step-by-step instructions demonstrate how to capture I/Q data on the
R&S FSWP and how to analyze data in the I/Q Analyzer application.
How to perform a measurement in the time or frequency domain on I/Q data (in MSRA
mode only) is described in the R&S FSWP MSRA User Manual.
● How to Capture Baseband (I/Q) Data as RF Input..................................................72
● How to Analyze Data in the I/Q Analyzer................................................................73
7.1.1 How to Capture Baseband (I/Q) Data as RF Input
By default, the I/Q Analyzer assumes the I/Q data is modulated on a carrier frequency
and input via the "RF Input" connector on the R&S FSWP.
1. Select the [MODE] key and select the "I/Q Analyzer" application.
2. Select the "Overview" softkey to display the "Overview" for an I/Q Analyzer mea-
surement.
3. Select the "Input" button to select and configure the "RF Input" signal source.
4. Select the "Amplitude" button to define the attenuation, reference level or other set-
tings that affect the input signal's amplitude and scaling.
5. Select the "Frequency" button to define the input signal's center frequency.
6. Optionally, select the "Trigger" button and define a trigger for data acquisition, for
example an I/Q Power trigger to start capturing data only when a specific power is
exceeded.
7. Select the "Bandwidth" button and define the bandwidth parameters for data acqui-
sition:
● "Sample Rate" or "Analysis Bandwidth" the span of the input signal to be cap-
tured for analysis, or the rate at which samples are captured (both values are
correlated)
How to Perform Measurements in the I/Q Analyzer Application