Rohde & Schwarz Spectrum Analyzer Preamplifier (software license)
The Rohde & Schwarz FSV-K30 (part number 1328.6690.02) is a software license option that enables the preamplifier function on the R&S FSV and FSVA spectrum analyzers. This option improves the analyzer's sensitivity by activating the internal preamplifier, allowing for the measurement of very low-level signals. The preamplifier is particularly useful for applications requiring high dynamic range and low noise floor, such as EMI measurements and weak signal detection. The license is installed via a key code and does not require additional hardware.