| B41 | HW-Option for CBT (4HU,with Display): Audio Generator and Analyzer |
| B42 | HW-Option for CBT/CBT32: Digital audio interface (S/P DIF) (CBT-B41 required) |
| B55 | HW option for CBT/CBT32: EDR extension (ex factory only) CBT-K55 required |
| C3 | Three years of depot calibration coverage based on the R&S recommended calibration interval - includes test data. The first calibration is included with product delivery with 1 additional depot calibration(s). |
| C5 | Five years of calibration coverage based on the R&S recommended calibration interval - includes test data. The first calibration is included with product delivery with 2 additional depot calibration(s). |
| CTS-DKD | CTS/CBT DKD (ISO17025) calibration incl. ISO 9000 calibration (order only with device) |
| DCV-1 | Documentation of calibration values |
| DCV-ZP | Printout of DCV (additional, in combination with DCV-Option only) |
| K52 | SW Option for CBT/CBT32 : A2DP Profile and SBC Codec (CBT-B41 and CBT-B55 required) |
| K54 | SW-Option for CBT/CBT32: Audio Profile Support Handsfree and Headset Profiles |
| K55 | SW option for CBT/CBT32: Enhanced Data Rate (EDR) CBT-B55/-U55 required |
| K57 | SW option for CBT/CBT32: Low Energy non-signaling measurements (CBT-B55 required) |
| R3 | Three years of depot repair coverage, including re-calibration if necessary to complete the repair. First year of repair coverage is provided by the 12-month new product warranty. |
| R5 | Five years of depot repair coverage, including re-calibration if necessary to complete the repair. First year of repair coverage is provided by the 12-month new product warranty. |
| U55 | Upgrade kit for CBT/CBT32: EDR HW extension CBT-K55 required |