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General Purpose Interface Bus (GPIB) or Hewlett-Packard Interface Bus (HP-IB) is a short-range digital communications 8-bit parallel multi-master interface bus specification originally developed by Hewlett-Packard and standardized in IEEE 488.1-2003. It subsequently became the subject of several standards.
The VISA standard [1] includes specifications for communication with resources (usually, but not always, instruments) over T&M-specific I/O interfaces such as GPIB and VXI. There are also some specifications for T&M-specific protocols over PC-standard I/O, such as HiSLIP [2] or VXI-11 [3] (over TCP/IP) and USBTMC [4] (over USB).
Users interface to hardware by either writing direct bus commands (USB, GPIB, Serial) or using high-level, device-specific drivers that provide native "G" function nodes for controlling the device. National Instruments makes thousands of device drivers available for download on their Instrument Driver Network (IDNet). [10]
It has drivers and abstraction layers for many different types of instruments and buses are included or are available for inclusion. Measurement Studio includes a suite of analysis functions, including curve fitting, spectral analysis, fast Fourier transforms (FFT) and digital filters, and visualization.
An instrument driver, in the context of test and measurement (T&M) application development, is a set of software routines that simplifies remote instrument control. Instrument drivers are specified by the IVI Foundation [ 1 ] and define an I/O abstraction layer using the virtual instrument software architecture (VISA).
Open Host Controller Interface (OHCI) [1] is an open standard.. Die shot of a VIA VT6307 Integrated Host Controller used for IEEE 1394A communication. When applied to an IEEE 1394 (also known as FireWire; i.LINK or Lynx) card, OHCI means that the card supports a standard interface to the PC and can be used by the OHCI IEEE 1394 drivers that come with all modern operating systems.
There is also a slower “synchronized mode”, in which a client is required to read the result of each query before it can send another. It is intended for backwards compatibility with the capabilities of GPIB, VXI-11, and USB-TMC instruments. HiSLIP clients (VISA libraries) have to support both modes.
The USRP hardware driver (UHD) is the device driver provided by Ettus Research for use with the USRP product family. [3] It supports Linux, MacOS, and Windows platforms. Several frameworks including GNU Radio, LabVIEW, MATLAB and Simulink use UHD. The functionality provided by UHD can also be accessed directly with the UHD API, which provides ...