| R&S®FSW-B3 | OCXO precision frequency reference |
R&S®FSW-B8E | Resolution bandwidth up to 40 MHz |
R&S®FSW-B8 | Resolution bandwidth up to 80 MHz |
| R&S®FSW-B10 | External generator control |
| R&S®FSW-B13 | 1 GHz to 1.75 GHz, 1.75 GHz to 3 GHz |
| R&S®FSW-B17 | Digital baseband Interface |
| R&S®FSW-B18 | Spare solid state drive (removable hard drive) |
| R&S®FSW-B21 | LO/IF connections for external mixers |
R&S®FSW-B24 | RF preamplifier, 100 kHz to 13.6 GHz |
R&S®FSW-B25 | Electronic attenuator, 1 dB steps |
| R&S®FSW-B33 | USB mass memory write protection |
| R&S®FSW-B40 | 40 MHz analysis bandwidth |
| R&S®FSW-B80 | 80 MHz analysis bandwidth |
| R&S®FSW-B160 | 160 MHz analysis bandwidth |
| R&S®FSW-B320 | 320 MHz analysis bandwidth |
| R&S®FSW-B512 | 512 MHz analysis bandwidth |
| R&S®FSW-B1200 | 1.2 GHz analysis bandwidth |
| R&S®FSW-B2001 | 2 GHz analysis bandwidth |
| R&S®FSW-B4001 | 4.4 GHz analysis bandwidth |
| R&S®FSW-B6001 | 6.4 GHz analysis bandwidth |
| R&S®FSW-B8001 | 8.312 GHz analysis bandwidth |
| R&S®FSW-B2000 | 2 GHz analysis bandwidth with external digitizer |
| R&S®FSW-B5000 | 5 GHz analysis bandwidth with external digitizer |
R&S®FSW-B71 | Analog baseband inputs, 40 MHz analysis bandwidth |
| R&S®FSW-B71E | 80 MHz analysis bandwidth for analog baseband inputs |
| R&S®FSW-B2071 | Oscilloscope baseband inputs |
| R&S®FSW-B512R | Real-time spectrum analyzer 512 MHz, POI ≤ 15 µs |
| R&S®FSW-B800R | Real-time spectrum analyzer 800 MHz, POI ≤ 15 µs |
| R&S®FSW-B90G | Frequency extension 90 GHz |
| R&S®FSW-B106 | I/Q memory extension 6 GB |
| R&S®FSW-B108 | I/Q memory extension 8 GB |
| R&S®FSW-B124 | I/Q memory extension 24 GB |
| R&S®FSW-B517 | DIG IQ 40G streaming out interface, max. 1 GHz bandwidth |
| R&S®FSW-B512R | Real-time spectrum analyzer |
| R&S®FSW-B1017 | DIG IQ 40G streaming out interface, max. 1 GHz bandwidth |
| R&S®FSW-FL | Floating license smart card, with USB adapter |
| R&S®FSW‑K6 | Pulse measurements |
| R&S®FSW‑K6S | Time sidelobe |
| R&S®FSW‑K7 | Modulation analysis for AM/FM/PM modulated single carriers |
| R&S®FSW‑K15 | VOR/ILS measurements |
| R&S®FSW‑K17 | Multicarrier group delay measurements |
| R&S®FSW‑K17S | Subspan measurement for group delay |
| R&S®FSW‑K18 | Amplifier measurements |
| R&S®FSW‑K18D | Direct DPD measurements |
| R&S®FSW‑K18F | Frequency response measurements |
| R&S®FSW‑K18M | Memory polynomial DPD |
| R&S®FSW‑K70 | Vector signal analysis |
| R&S®FSW‑K70M | Multimodulation analysis |
| R&S®FSW‑K70P | BER PRBS measurements |
| R&S®FSW‑K96 | OFDM signal analysis |
| R&S®FSW‑K575 | I/Q noise cancellation |
| R&S®FSW‑K91 | WLAN IEEE 802.11a/b/g |
| R&S®FSW‑K91P | WLAN IEEE 802.11p |
| R&S®FSW‑K91N | WLAN IEEE 802.11n |
| R&S®FSW‑K91AC | WLAN IEEE 802.11ac |
| R&S®FSW‑K91AX | WLAN IEEE 802.11ax |
| R&S®FSW‑K91BE | WLAN IEEE 802.11be |
| R&S®FSW‑K95 | WLAN IEEE 802.11ad |
| R&S®FSW‑K97 | WLAN IEEE 802.11ay SC (additional results and features to
R&S®FSW‑K95) |
| R&S®FSW‑K100/-K101/-K104/-K105 | EUTRA/LTE TDD and FDD UL and DL |
| R&S®FSW‑K102 | EUTRA/LTE-Advanced and MIMO DL |
| R&S®FSW‑K149 | High rate pulse repetition frequency ultrawideband measurement |
| R&S®FSW‑K201 | OneWeb reverse link measurement application |
