Rohde & Schwarz Preselector (software license)
The Rohde & Schwarz FSW-K54 Preselector (software license), part number 1329.9128.02, is an optional software feature for the R&S FSW signal and spectrum analyzer series. This preselector software enables the use of an external preselector to improve measurement performance by reducing out-of-band signals and image responses, particularly in challenging RF environments. The FSW-K54 option is designed to enhance dynamic range and measurement accuracy for demanding applications such as EMI compliance testing and spectrum monitoring. It integrates seamlessly with the FSW analyzer's user interface, allowing for straightforward configuration and control of the preselector parameters. The license is delivered electronically and requires activation on a compatible FSW instrument.