Standard Guide for Measuring Some Electronic Characteristics of Ultrasonic Examination Instruments
|Publication Date:||10 September 1995|
|ICS Code (Non-destructive testing):||19.100|
1.1 This guide describes procedures for electronically measuring the following performance-related characteristics of some sections of ultrasonic instruments:
1.1.1 Power Supply Section: line regulation, battery discharge time, and battery charge time.
1.1.2 Pulser Section: pulse shape, pulse amplitude, pulse rise time, pulse length, and pulse frequency spectrum.
1.1.3 Receiver Section: vertical linearity, frequency response, noise and sensitivity, and dB controls.
1.1.4 Time Base Section: horizontal linearity, and clock (pulse repetition rate).
1.1.5 Gate/Alarm Section: delay and width, resolution, alarm level, gain uniformity, analog output, and back echo gate.
1.2 This guide complements Practice E 317, and is not intended for evaluating the performance characteristics of ultrasonic examination instruments on the inspection/productio
NOTE 1--No access to internal circuity is required.