ieee 488

1 definition found

ieee 488 - Free On-line Dictionary of Computing (26 May 2007) :

  IEEE 488
  GBIP
  General Purpose Interface Bus
  GPIB
  Hewlett-Packard Interface Bus
  HP-IB
  
     <hardware, standard> (GPIB, General-Purpose Interface Bus,
     HP-IB, Hewlett-Packard Interface Bus) An 8-bit parallel bus
     common on test equipment.
  
     The IEEE-488 standard was proposed by Hewlett-Packard in the
     late 1970s and has undergone a couple of revisions.  HP
     documentation (including data sheets and manuals) calls it
     HP-IB, or Hewlett-Packard Interface Bus.
  
     It allows up to 15 intelligent devices to share a single bus,
     with the slowest device participating in the control and data
     transfer handshakes to drive the speed of the transaction.
     The maximum data rate is about one megabit per second.
  
     Other standards committees have adopted HP-IB (American
     Standards Institute with ANSI Standard MC 1.1 and
     International Electro-technical Commission with IEC
     Publication 625-1).
  
     To paraphrase from the HP 1989 Test & Measurement Catalog (the
     50th Anniversary version): The HP-IB has a party-line
     structure wherein all devices on the bus are connected in
     parallel.  The 16 signal lines within the passive
     interconnecting HP-IB (IEEE-488) cable are grouped into three
     clusters according to their functions (Data Bus, Data Byte
     Transfer Control Bus, General Interface Management Bus).
  
     In June 1987 the IEEE approved a new standard for programmable
     instruments called IEEE Std. 488.2-1987 Codes, Formats,
     Protocols, and Common Commands.  It works with the IEEE
     Standard Digital Interface for Programmable Instrumentation,
     IEEE 488-1978 (now 488.1).  HP-IB is Hewlett-Packard's
     implementation of IEEE 488.1.
  
     (1996-05-10)