Electrostatic discharge can damage the electronic components of the product and the device under test (DUT).
Considerations for test setup
Electromagnetic interference (EMI) can affect the measurement results.
To suppress electromagnetic radiation during operation:
Only use the combined differential IQ/USB cable set delivered with the R&S SZU, as the product has been calibrated with these cables.
Optionally, the combined differential IQ -Trigger-USB cable set R&S SZU-Z1 is available under order number 1425.4851.02. See also Recommended Extras in the data sheet.
Use high-quality shielded cables, for example, double-shielded RF cables.
Always terminate open cable ends.
Terminate the waveguide output with 50 Ohm. If it is not possible to terminate the output, leave it open.
Alternatively, you can connect a wideband power sensor of the R&S NRP power senor series, which also provides sufficient termination.
Ensure that connected external devices comply with EMC regulations.
Frequently connecting and disconnecting the RF output can wear and tear the waveguide port of the R&S SZU.
We recommend that you use a test port adapter, as shown in "Waveguide test port adapters".
Protect the waveguide flanges of the I/Q upconverter against mechanical damage. Always use the torque wrench to tighten the screws of the waveguide flanges. See "To mount a test port adapter".
Shield the waveguide port from dust and moisture, and avoid scratching the contact surfaces.
See "Cleaning" for information on how to clean the waveguide port, if necessary.
When the I/Q upconverter is not in use, leave the test port adapter mounted and attach one of the included protective caps to the adapter.
Information on signal levels is provided in the data sheet. Keep the signal levels within the specified ranges to avoid damage to the product and connected devices.
The R&S SZU works only with the R&S SMW / R&S SMM vector signal generators, which adjust the signal level for the LO input at any time to the optimum value for the R&S SZU.
Electrostatic discharge is most likely to occur when you connect or disconnect a DUT.
NOTICE!
Ground yourself to prevent electrostatic discharge damage:
Use a wrist strap and cord to connect yourself to ground.
Use a conductive floor mat and heel strap combination.