| Z8-C3 | Three years of depot calibration coverage based on the R&S recommended calibration interval - includes test data. |
| Z8-C5 | Five years of calibration coverage based on the R&S recommended calibration interval - includes test data. |
| Z8-R3 | Three years of depot repair coverage, including recalibration and test data if necessary to complete the repair. |
| Z8-R5 | Five years of depot repair coverage, including recalibration and test data if necessary to complete the repair. |