GPIB(General-Purpose Interface Bus)-通用接口总线
大多数打印机便是经过GPIB线以及GPIB接口与电脑相连。
GPIB 简介
1975年 HP-IB变成IEEE-488规范
1987年 IEEE488.2被采用, IEEE 488-1978变成IEEE488.1-1987
1990年 SCPI规范被引进IEEE 488仪器
1992年 修订IEEE 488.2
1993年 NI公司提出HS488
1965年, 惠普公司(Hewlett-Packard)规划了惠普接口总线(HP-IB, 用于衔接惠普的计算机和可编程仪器.因为其高转化速率(一般可达1Mbytes/s), 这种接口总线得到遍及认可, 并被接纳为IEEE规范488-1975和ANSI/IEEE规范488.1-1987. 后来, GPIB比HP-IB的称号用得更广泛. ANSI /IEEE 488.2 -1987加强了本来的规范, 准确界说了操控器和仪器的通讯方法. 可编程仪器的规范指令(Standard Commands for Programmable Instruments, SCPI)采用了IEEE488.2界说的指令结构,创建了一整套编程指令.
多仪器的星型组合和线型组合
咱们运用一台计算机，经过GPIB操控卡能够完成和一台或多台仪器的听、讲、控功用，并组成仪器体系，使咱们的测验和丈量作业变得方便, 简洁, 准确和高效。经过GPIB电缆的衔接，能够方便地完成星型组合、线型组合或许二者的组合。
是一种工程操控用的协议。开始由HP公司提出，现在成为一种国际规范，恪守的协议为IEEE488。一般被用来运用任何编程言语如VB、Vc、C++完成电脑对仪器的操控。当然也有某些仪器制造商自己开发的言语支撑GPIB。如keithley公司运用的testpoint，NI公司的labview等。完成这种操控首先要被控仪器支撑GPIB，其次，工控机装置IEEE488卡，并经过gpib线衔接两个设备。
GPIB比串口操控提高了传输速率和一起支撑的设备总数。可是现在现已被传输速率更快支撑设备总数更多的lan接口代替。
GPIB interfaces are commonly found on most test instruments today and Agilent has a wide range of GPIB products to help you connect and control your instruments easily, and affordably..
Save TIme, money, and increase producTIvity today by selecTIng the right product for you in the list below
Plug and play interface
USB 2.0 interface (USB 1.1 compaTIble) and IEEE 488 interface (connect up to 14 GPIB instruments)
Standard – industry libraries mean you don´t rewrite software. IO Libraries Suite 15.0 now shipping
High-speed – transfer over 1.15MB/sec
Added feature – Parallel Polling (check response of up to 8 devices at one single poll)
The Agilent 82357B USB/GPIB Interface provides a direct connection from a USB port on your laptop or desktop PC to GPIB instruments. There are no switches to set, no PC cards to install, and no external power supplies required. Getting connected has never been easier.
Currently Supported Interface’s Matrix
This 12-page application note provides a variety of tips and tricks that will help you create flexible test systems that can easily incorporate USB, LAN, GPIB and RS-232C.
