Setting up the measurement
This section describes the setup of a basic application with the R&S SZU I/Q Upconverter.
Required equipment
To operate an R&S SZU I/Q upconverter, you need:
An Rohde & Schwarz vector signal generator, e.g., an R&S SMW, which is used as an example in the following description.
The R&S SMW must be equipped with the corresponding options to meet the frequency range and the level of the R&S SZU. See the data sheet for the specification of the local oscillator signal.
A test port adapter, recommended if applicable.
Standard cabling, included:
Note: Only use the cables delivered with the R&S SZU,
as the product has been calibrated with these cables.
Four I/Q cables
USB cable
RF cable
Trigger cable, optionally
Test setup
Signal source is the R&S SMW that supplies the analog I/Q signal, and optionally a trigger signal to the R&S SZU. For control, the R&S SMW uses the USB connection. The R&S SZU transmits the upconverted RF signal to the RF shield box (DUT).
Note:Connect the instruments in the order as described in the following section.
In particular, consider these topics:
Switch off the RF of the R&S SMW before connecting the R&S SZU, to prevent damage of the R&S SZU due to high input power.
Make sure that the input power level is always less than the maximum level specified in the data sheet.
Connect the baseband signals before starting up.
To set up the measurement
Connecting the measurement setup and configuring the measurement includes the following steps:
NOTICE!Risk of instrument damage
High input power can damage the R&S SZU.
Switch off the RF output of the R&S SMW before connecting to LO In of the R&S SZU.
Connect the USB cable plug B to the R&S SZU, and the USB cable plug A to the R&S SMW (rear panel).
See "Connecting to USB"
With connecting USB, the R&S SMW recognizes the R&S SZU automatically. The R&S SMW reads all parameters for identification and the calibration table of the R&S SZU, and sets the optimum LO level.
At a reboot of the R&S SMW with a connected R&S SZU, RF can remain active. The base unit starts with the recently used settings.