Definition(s)
Signal
Response of electronic NDT equipment to an imperfection or defect.
Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards
Signal
Audible indication giving information about the condition of a system or equipment.
Source: IMO resolution A.1021(26), Code on Alarms and Indicators, 2009, 18 January 2010, International Maritime Organization. Regulatory Guidance