| B1 | Spectrum Analyzer |
| B18 | Spare Solid State Drive |
| B21 | LO/IF Ports for External Mixers |
| B24 | RF Preamplifier, 30 dB 100kHz to 50GHz for R&S®FSWP50 option R&S®FSWP-B1 required (hardware option |
| B320 | Extension to 320 MHz signal analysis bandwidth Note: I believe that Resolution BW >10 Mhz would work also. |
| B4 | High stability OCXO |
| B60 | Cross correlation for phase noise analyzer |
| B61 | Cross correlation |
| B61 | Cross correlation for phase noise analyzer R&S®FSWP50 from 1MHz to 50GHz Low phase noise, includes R&S®FSWP-B4, excludes option R&S®FSWP-B60 (hardware option) |
| B64 | Signal source for additive phase noise measurement, model dependent 10 MHz to max. 18 GHz, 0.1 dB steps requires R&S®FSWP-B60 or R&S®FSWP-B61 (hardware option |
| B8 | Resolution bandwidth up to 80 MHz, 20 MHz and 50 MHz additionally option R&S®FSWP-B1 required, for R&S®FSWP50 |
| K33 | Security write protection for solid state drive |
| K4 | Pulsed Phase Noise Measurements |
| K7 | Modulation analysis application |