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Standard Guide for Measuring Some Electronic Characteristics of Ultrasonic Testing Instruments
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Available format(s): Hardcopy, PDF
Superseded date: 01-07-2021
Language(s): English
Published date: 04-07-2016
Publisher: American Society for Testing and Materials
1.1This guide describes procedures for electronically measuring the following performance-related characteristics of some sections of ultrasonic instruments:
1.1.1Power Supply Section:
line regulation, battery discharge time, and battery charge time.
1.1.2Pulser Section: pulse shape, pulse amplitude, pulse rise time, pulse length, and pulse frequency spectrum.
1.1.3Receiver Section: vertical linearity, frequency response, noise and sensitivity, and dB controls.
1.1.4Time Base Section: horizontal linearity, and clock (pulse repetition rate).
1.1.5Gate/Alarm Section: delay and width, resolution, alarm level, gain uniformity, analog output, and back echo gate.
1.2This guide complements Practice E317, D2548 and is not intended for evaluating the performance characteristics of ultrasonic testing instruments on the inspection/production line.
Note 1:No access to internal circuitry is required.
1.3Units—The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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