ASTM_E_1324_-_11.pdf

Designation:E132411Standard Guide forMeasuring Some Electronic Characteristics of UltrasonicTesting Instruments1This standard is issued under the fixed designation E1324;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This guide describes procedures for electronically mea-suring the following performance-related characteristics ofsome sections of ultrasonic instruments:1.1.1 Power Supply Section:line regulation,battery discharge time,andbattery charge time.1.1.2 Pulser Section:pulse shape,pulse amplitude,pulse rise time,pulse length,andpulse frequency spectrum.1.1.3 Receiver Section:vertical linearity,frequency response,noise and sensitivity,anddB controls.1.1.4 Time Base Section:horizontal linearity,andclock(pulse repetition rate).1.1.5 Gate/Alarm Section:delay and width,resolution,alarm level,gain uniformity,analog output,andback echo gate.1.2 This guide complements Practice E317,D2548 and isnot intended for evaluating the performance characteristics ofultrasonic testing instruments on the inspection/productionline.NOTE1No access to internal circuitry is required.1.3 UnitsThe values stated in inch-pound units are to beregarded as standard.The values given in parentheses aremathematical conversions to SI units that are provided forinformation only and are not considered standard.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D2548 Method of Test forAnalysis of Oil Soluble PetroleumSulfonates by Liquid Chromatography;Replaced byD 3712(Withdrawn 1979)3E317 Practice for Evaluating Performance Characteristics ofUltrasonic Pulse-Echo Testing Instruments and Systemswithout the Use of Electronic Measurement InstrumentsE1316 Terminology for Nondestructive Examinations2.2 ISO Standard:ISO 10012MeasurementManagementSystemsRequirements for Measurement Processes and MeasuringEquipment42.3 ANSI Standard:Z540-1 General Requirements for Calibration Laboratoriesand Measurement and Test Equipment52.4 Other Standard:IEEE Std.100,IEEE Standard Dictionary of Electrical andElectronics Terms63.Summary of Guide3.1 The electronic performance of each section is measuredby identifying that portion of the electrical circuit of the1This guide is under the jurisdiction of ASTM Committee E07 on Nondestruc-tive Testing and is the direct responsibility of Subcommittee E07.06 on UltrasonicMethod.Current edition approved Aug.1,2011.Published August 2011.Originallyapproved in 1990.Last previous edition approved in 2005 as E1324-00(2005).DOI:10.1520/E1324-11.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from International Organization for Standardization(ISO),1,ch.dela Voie-Creuse,CP 56,CH-1211 Geneva 20,Switzerland,http:/www.iso.org.5Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.6Available from Institute of Electrical and Electronics Engineers,Inc.(IEEE),445 Hoes Ln.,P.O.Box 1331,Piscataway,NJ 08854-1331*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 instrument which comprises the section,applying the recom-mended stimulus or load,or both,and performing the requiredmeasurements using commercially available electronic testequipment.These data are then summarized in tabular orgraphical form as performance-related values which can becompared with corresponding values of other ultrasonic testinginstruments or of values for the same instrument obtainedearlier(see Section 12 for a suggested reporting format).3.2 The following describes the sections of the ultrasonicinstrument and their interrelations during measurement:3.2.1 Power Supply SectionThe power supply section isthat portion of the total instrument circuitry which supplies theregulated DC voltages required to power all other sections ofthe ultrasonic instrument,including the high voltage(that is,pulser and display voltage)circuitry.3.2.2 Pulser SectionThe pulser section is that portion ofthe total instrument circuitry which generates the electricalpulse used to energize the ultrasonic search unit.The pulsersection may also include the pulse-shape modification controlssuch as pulse length,d