![]() ![]() The protocol supports both half-duplex and full-duplex communication modes so that two devices can send data while at the same time receiving data from each other simultaneously.The topology used in GPIB is linear or forked type.The bus can support 31 5-bit primary devices which are addressed from 0-to 30 by assigning a unique address for every device.The connector used in GPIB is a 24-pin Amphenol or sometimes a D-type connector is also used.The maximum data rates can be up to 1 Megabyte/second.The bus length can be 20 meters, but the distance between each device can be 2 meters.To a single IEEE 488 bus, approximately 15 devices can be connected at a time.Communication happens in digital format and it transmits only one byte of data at a time.The transaction between the messages is a hardware three-wire-handshake.Because of its flexibility, the data transmission can take place between any instruments present in the bus having a speed appropriate for the slowest active instrument.Īs the main functionality of GPIB is to establish interconnection between various instruments and devices, it is recommended to know the features of the IEEE 488 bus. As the bus became the key interface meeting multiple standards, it was termed as General Purpose Interface Bus. The IEEE 488 (GPIB) bus is an 8-bit parallel multi-master interface bus that is used for short-distance communications. Today, this article helps us in understanding the detailed concept regarding the basics of GPIB, its architecture, working principles, and advantages & disadvantages. From then, GPIB was also termed IEEE 488 or IEEE 488 bus. Finally, the Institute of Electrical and Electronics Engineers has provided a specification number to GPIB which is 488 in the year 1978. HPIB is the original name for GPIB (General Purpose Interface Bus), whereas later it got many other names. In order to achieve smoother interconnection between controllers and measuring instruments, the HP-IB was introduced (HP Interface Bus). During the 1960s, HP developed many different tests and measuring devices like logic analyzers and multimeters. ![]()
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