I/Q software interface (Option R&S RTP-K11)
R&S
®
RTP
1003User Manual 1337.9952.02 ─ 12
17 I/Q software interface (Option R&S RTP-
K11)
The option R&S RTP-K11 "I/Q software interface" acquires modulated signals and out-
puts I/Q data for further analysis using other software, for example, MATLAB. Rohde &
Schwarz provides the R&S®VSE vector signal explorer for analysis of I/Q data on
external computer.
In I/Q mode, the input signal is captured with a sample rate of 20 Gsample/s. On
R&S RTP134 and R&S RTP164 instruments with more than 8 GHz bandwidth, a sam-
ple rate of 40 Gsample/s is supported.
For specifications, see the R&S RTP data sheet.
● I/Q mode............................................................................................................. 1003
● I/Q sampling setup.............................................................................................. 1003
● I/Q data output.................................................................................................... 1009
● Deembedding in I/Q mode.................................................................................. 1010
17.1 I/Q mode
The I/Q mode is a special operating mode of R&S RTP. In this mode, the usual analyz-
ing tools (cursor, zoom, measurements, FFT and so on) of the oscilloscope are deacti-
vated. The instrument displays the magnitude of the I/Q vector to get an impression of
the data before it is exported.
Triggering is performed on the input data before conversion to I/Q data, using the usual
R&S RTP trigger functionality. In case of complex input signals, the instrument triggers
on one component of the complex signal (I or Q) depending on the selected trigger
source.
To activate the IQ mode
1. Press the [App Cockpit ] key on the front panel.
2. In the "RF" tab, select "IQ".
3. In the "IQ Sampling" dialog, tap "Enable".
The instrument switches to I/Q mode, and the setup dialog for I/Q data recording is
shown.
17.2 I/Q sampling setup
Access: [App Cockpit] menu > "RF" tab > "IQ" > "IQ Sampling Setup"
In the "IQ Sampling" dialog box, you configure the complete I/Q sampling for real and
complex input signals.
I/Q sampling setup
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