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Standard Guide for Measuring Some Electronic Characteristics of Ultrasonic Examination Instruments
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 Sectionline regulation,battery discharge time, andbattery charge time.
1.1.2 Pulser Sectionpulse shape,pulse amplitude,pulse rise time, pulse length, andpulse frequency spectrum.
1.1.3 Receiver Sectionvertical linearity, frequency response,noise and sensitivity, and dB controls.
1.1.4 Time Base Sectionhorizontal linearity, andclock (pulse repetition rate).
1.1.5 Gate/Alarm Sectiondelay 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/production line.
Note 1No access to internal circuity is required.
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