This SAE Standard applies to directional drilling electronics and tracking equipment of the following types: a Tracking Transmitter b Tracking Receiver c Telemetry Device d Remote Display This type of tracking equipment is typically used with Horizontal Earthboring Machines as defined in SAE J2022.
SAE J2520-2007 history
2013SAE J2520-2013 Classification, Nomenclature, and Specification Definitions for Directional Drilling Tracking Equipment
2007SAE J2520-2007 Classification, Nomenclature, and Specification Definitions for Directional Drilling Tracking Equipment