- N1500A-001 Transmission line and free space method
- N1500A-002 Arch reflectivity method
- N1500A-003 Resonant cavity method (for SPDR, N1501AExx and 85072A)
- N1500A-004 Coaxial probe method
- N1500A-005 Parallel plate/inductance method up to 1 GHz
- N1500A-006 Parallel place/inductance method up to 120 MHz
- N1500A-007 Resonant cavity for split cylinder resonators (SCR, N1501AKEAD-7xx)