SPRAC03 July 2024 IWR6843
IEC 61496-5:4.2.12.2
As defined in Section 3.507, the tolerance zone is the zone outside of and adjacent to the supplier specified detection zone. The limited position accuracy zone is the area where a test target is still detected, but with a probability of detection lower than the required probability. As defined in Section 4.2.12.2, the test target shall be detected with a minimum probability of detection of 1 × 10-7 to 2.9 × 10-7 throughout the detection zones. The mathematics behind calculating probability of detection is out of scope of this document, but can be found in Annex BB in the standard.