Configuring the RF Signal
R&S
®
SMW200A
464User Manual 1175.6632.02 ─ 30
Example: Functionality of the converter mode
As the R&S SMW is a 2 path signal generator, it optimally supports external frequency
converters. For convenient operation, this functionality calculates the resulting system
frequency.
The converter mixes an I/Q modulated RF signal of the first path with an unmodulated,
multiplied signal generated in the second path of the R&S SMW.
To configure the converter frequency:
●
Set the frequency of the modulation carrier and the multiplication factor in the first
path.
●
Select the mixing frequency in the second path.
According to the selected converter mode, the R&S SMW shows the resulting fre-
quency in the status bar.
The modes selectable show the basis of the calculation. Due to the interaction of the
two paths, active converter modes are mutually exclusive. Depending on the band to
be used, select the appropriate mode:
"OFF"
No converter considered.
"Multiplier * RFB + RFA" /"Multiplier * RFA + RFB"
Uses the upper sideband.
"Multiplier * RFB - RFA"/"Multiplier * RFA - RFB"
Uses the lower sideband.
Remote command:
n.a.
Frequency Overrange
This section applies to an R&S SZU100A IQ Upconverter connected to the corre-
sponding path.
An R&S SZU can support a wider frequency range than the range given in the data
sheet due to component and manufacturing tolerances. To benefit from the extended
range, the R&S SMW provides accessing this overrange, e.g. if required for certain test
setups.
The R&S SMW obtains the calibration data of the R&S SZU when you establish the
connection, see "To connect and configure an R&S SZU" on page 200. If the calibra-
tion data confirm an extended range, the R&S SMW displays the expanded frequency
range, and you can enable the overrange for use.
The remote cmmands required to define these settings are decribed in Chap-
ter 14.19.7, "SOURce:FREQuency:CONVerter Subsystem", on page 1133.
Frequency Overrange Active ← Frequency Overrange
Activates the overrange operation.
Configuring RF Frequency and Level
To Next Page
Loading...