Rohde & Schwarz FSV3000, User Manual

Page: 424 / 1489

Common measurement settings
R&S
®
FSVA3000/ R&S
®
FSV3000
424 User Manual 1178.8520.02 ─ 08
To activate and configure the external mixer
1. Select "INPUT" > "Input Source Config" >" External Mixer":" ON" to activate the
external mixer for the current application.
2. Import the conversion loss table for the RPG FS-Z75 mixer, which is provided with
the device.
a) Select the "Conversion Loss Table" tab.
b) Select "Import Table".
c) From the
C:\R_S\INSTR\USER\cvl
directory, select the
100112_MAG_4_B5000_3G5.B5G
file.
d) Select [ENTER].
3. Switch to the "Mixer Settings" tab.
4. Select the "Mixer Type": "3-port".
5. Select "Mixer Settings > Band" to define the required frequency range.
6. From the "Band" selection list, select the band "V".
7. A span is automatically set which covers the whole V band (50 GHz to 75 GHz).
8. In the "Mixer Settings", select "Conversion Loss: Table" for Range 1 to define fre-
quency-dependent level correction.
9. From the selection list, select the
100112_MAG_4_B5000_3G5.B5G
conversion
loss table which you imported previously. No further settings are necessary since
the selected file contains all required parameters.
Now you can analyze the broadband signal with an analysis bandwidth of 5 GHz.
6.2.6 External frontend control (R&S FSV3-K553)
If the External Frontend Control option (R&S FSV3-K553) is installed, you can control
measurements with the R&S FSV/A using a connected external frontend.
● External frontend basics ........................................................................................424
● External frontend settings ..................................................................................... 429
● How to use an external frontend ........................................................................... 436
● Troubleshooting external frontend control .............................................................437
6.2.6.1 External frontend basics
Due to the physical dimensions of modern spectrum analyzers, long RF cables
between the DUT and the analyzer are often necessary in complex setups. When mea-
suring high frequency signals, the long RF cable can lead to unwanted loss.
An external frontend with smaller physical dimensions allows for measurements closer
to the DUT. The measurement signal is transferred from the DUT to the analyzer on a
lower intermediate frequency (IF), for which loss does not have a major effect.
Data input and output