1、 INTERNATIONAL STANDARD IEC60488-1First edition2004-07IEEE 488.1 Higher performance protocol for the standard digital interface for programmable instrumentation Part 1: General Reference number IEC 60488-1(E):2004 IEEE Std. 488.1(E):2003 Publication numbering As from 1 January 1997 all IEC publicati
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8、ance protocol for the standard digital interface for programmable instrumentation Part 1: General INTERNATIONAL STANDARD IEC60488-1First edition2004-07IEEE 488.1 Commission Electrotechnique InternationaleInternational Electrotechnical CommissionF_mgZjhgZy We_dljhl_ogbq_kdZy DhfbkkbyCopyright IEEE 20
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15、 International Standard IEC/IEEE 60488-1 has been processed through subcommittee 65C: Digital communications, of IEC technical committee 65: Industrial-process measurement and control. This standard cancels and replaces the second edition of IEC 60625-1 (1993). At times in this standard, specific re
16、ference is made to IEEE Std 488.1-1987, which constituted an earlier version of IEEE Std 488.1-2003, the IEEE edition upon which this standard is based. Where specific dated references were made to the 1987 edition, these references have been maintained. Furthermore, it is to be noted that full comp
17、atibility of this standard with IEC/IEEE 60488-2:2004 requires implementation of all revisions indicated previously in the IEEE Introduction. Therefore, readers of this standard are encouraged to read also the companion standard IEEE Std 488.2-1987, which constitutes an earlier edition of IEC 60488-
18、2:2004. The text of this standard is based on the following documents: IEEE Std FDIS Report on voting 488.1 (2003) 65C/319A/FDIS 65C/343/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. IEC 60488-1:2004(E)IEEE 488
19、.1-2003(E) 4 Published by IEC under licence from IEEE. 2003 IEEE. All rights reserved. This publication has been drafted in accordance with the ISO/IEC Directives. The committee has decided that the contents of this publication will remain unchanged until 2009. IEC/IEEE 60488 consists of the followi
20、ng publications: Higher performance protocol for the standard digital interface for programmable instrumentation Part 1: General (60488-1). Standard digital interface for programmable instrumentation Part 2: Codes, formats, protocols and common commands (60488-2). IEC 60488-1:2004(E)IEEE 488.1-2003(
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40、that are brought to its attention. IEC 60488-1:2004(E)IEEE 488.1-2003(E) 6 Published by IEC under licence from IEEE. 2003 IEEE. All rights reserved. SponsorTechnical Committee on Automated Test Systems and Instrumentation (TC-8)of theIEEE Instrumentation and Measurement SocietyApproved 10 October 20
41、03American National Standard InstituteApproved 12 June 2003IEEE-SA Standards BoardProgrammable InstrumentationIEEE Standard for HigherPerformance Protocol for theStandard Digital Interface forAbstract: This standard applies to interface systems used to interconnect both programmable andnonprogrammab
42、le electronic measuring apparatus with other apparatus and accessories neces-sary to assemble instrumentation systems. It applies to the interface of instrumentation systems, orportions of them, in which thea) Data exchanged among the interconnected apparatus is digital (as distinct from analog)b) N
43、umber of devices that may be interconnected by one contiguous bus does not exceed 15c) Total transmission path lengths over the interconnecting cables does not exceed 20 md) Data rate among devices does not exceed 8 000 000 B/sThe basic functional specifications of this standard may be used in digit
44、al interface applicationsthat require longer distances, more devices, increased noise immunity, or combinations of these.Different electrical and mechanical specifications may be required (for example, symmetrical cir-cuit configurations, high threshold logic, special connectors, or cable configurat
45、ions) for theseextended applications.Keywords: GPIB, HPIB, HS488, non-interlocked handshake, three-wire handshake IEC 60488-1:2004(E)IEEE 488.1-2003(E) 7 Published by IEC under licence from IEEE. 2003 IEEE. All rights reserved. IEEE Std 488 has enjoyed continuous and widespread use since its initial
46、 publication in 1975. The firstrevision occurred in 1978 as a result of practical experience and recognition that certain clauses neededclarification to improve compatibility among independently designed products. No major changes weremade in 1978; many changes were pure editorial; however, 20 claus
47、es had textual changes with technicalimplications, although none contradicted the concepts as defined in the original publication. Supplement Awas introduced in 1980 to correct one minor deficiency in the controller function related to “take controlsynchronously.”In 1987, a systematic review was und
48、ertaken as a result of both the normal 5-year review cycle and relatedwork on IEEE 488 device-dependent message syntax structures. In addition, there was a strong desire on thepart of both IEEE participants and our IEC colleagues to bring equivalent standards (IEC 625-1) into closeralignment. IEEE S
49、td 488.1-1987 represents the culmination of this review cycle. Again, no major technicalchanges were made, and care was exercised to preserve compatibility with earlier versions of IEEE Std 488.The IEEE Std 488.1-2003 specification adds new interface functions to allow designers the option ofimplementing noninterlocked handshake transfers.In preparing this specification, several stylistic changes to IEEE Std 488.1-1987 were necessary to bring thedocument up to IEEE standards. The following chang
