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). The VISA hardware abstraction layer provides an interface-independent communication channel to T&M instruments. Furthermore, the instrument drivers encapsulate the Standard Commands for Programmable Instruments (SCPI) commands, which are an ASCII-based set of commands for reading and writing instrument settings and measurement data. This standard allows an abstract way of using various programming languages to program remote-control applications instead of using SCPI commands. An instrument driver usually has a well-defined API.
Standards[edit]
The correct version of the VISA Shared Components is installed by the IO Libraries Suite, so users don't typically need to worry about installing this package. However, if you need to repair, or install an older version of the VISA Shared Components you can download it here. Truck drivers must meet the general entry requirements as a visitor for business (B-1 classification) set forth in section 101 (a) (15) (B) of the Immigration and Nationality Act of 1952 (INA) and the Department of State regulations. To qualify as a bona fide visitor for business, the driver must. Tektronix USB instruments use and require a generic USB Device Driver, referred to as a USB Test & Measurement Class driver or USBTMC driver. USBTMC is a subclass of the USB specification. This driver is typically included with the Virtual Instrument Software Architecture (VISA). (See block diagram below.). People who drive in the U.S. Must have a valid driver's license. If you're a foreign visitor, some states require you to have an International Driving Permit (IDP) and a valid license from your own country. Contact the motor vehicle department of each state you will be driving to find out its requirements.
VISA and VISA Tools History At the time, where GPIB was the main physical communication interface, remote control applications communicated directly with GPIB hardware drivers.
VXIplug&play instrument driver[edit]
The VXIplug&play Systems Alliance was founded in 1993[2] with the aim of unifying VXI hardware and software to achieve 'plug and play' interoperability for VXI and GPIB instruments. As part of the unifying process, VXIplug&play instrument drivers[3] were also defined.
IVI instrument drivers[edit]
When the IVI Foundation took over the Alliance in 2002, it defined a new generation of instrument drivers to replace the VXIplug&play standard. The IVI instrument driver specification intends to overcome the drawbacks of VXIplug&play. These IVI (Interchangeable Virtual Instrumentation) drivers[4] are currently defined in three different architectures:
- The IVI-COM driver architecture[5] is based on the Microsoft Component Object Model.
- The IVI-C drivers are based on C programming language shared components (shared libraries).
- The IVI.NET driver architecture was specified in 2010.[5][6] The IVI.NET drivers are based on the .NET framework.
Visa Driver Library
Remote control of instrumentation[edit]
Instrument drivers allow quicker development of remote-control applications for instrumentation. The drivers reduce the difficulty of string formatting when using SCPI commands by providing a well-defined API. The IVI and VXIplug&play Instrument Drivers use the VISA as the hardware abstraction layer so that hardware-independent applications can be developed.
I/O hardware abstraction layer VISA[edit]
The VISA library allows test and measurement equipment to be connected through various hardware interfaces. The following interfaces are available:
- GPIB/IEEE-488
- VXI-11[7] (over TCP/IP)
- USB488/USBTMC (USB Test & Measurement), USB Test & Measurement Class Specification[8]
- HiSLIP[9] (over TCP/IP).
LXI[edit]
The LAN eXtensions for Instrumentation (LXI) standard defines the communications protocols for controlling test and measurement systems using Ethernet. The standard requires vendors to offer IVI compliant instrument drivers.
See also[edit]
References[edit]
- ^'IVI Foundation Specifications'. IVI Foundation.
- ^'VXIplug&play Alliance'. IVI Foundation.
- ^'VPP-3.1: Instrument Drivers Architecture an Design Specification'(PDF). IVI Foundation.
- ^'IVI Driver Specifications'. IVI Foundation.
- ^ ab'IVI-3.1: Driver Architecture Specification'(PDF). IVI Foundation.
- ^'IVI-3.18: IVI.NET Utility Classes and Interfaces Specification'(PDF). IVI Foundation.
- ^'VXI-11 Bus Specification'. VXI Bus Consortium.
- ^'USB Test & Measurement Class Specification'. USB Implementers Forum Inc. Archived from the original on 2010-03-26.
- ^'IVI-6.1: High-Speed LAN Instrument Protocol (HiSLIP)'(PDF). IVI Foundation.
External links[edit]
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). The VISA hardware abstraction layer provides an interface-independent communication channel to T&M instruments. Furthermore, the instrument drivers encapsulate the Standard Commands for Programmable Instruments (SCPI) commands, which are an ASCII-based set of commands for reading and writing instrument settings and measurement data. This standard allows an abstract way of using various programming languages to program remote-control applications instead of using SCPI commands. An instrument driver usually has a well-defined API.
Standards[edit]
VXIplug&play instrument driver[edit]
The VXIplug&play Systems Alliance was founded in 1993[2] with the aim of unifying VXI hardware and software to achieve 'plug and play' interoperability for VXI and GPIB instruments. As part of the unifying process, VXIplug&play instrument drivers[3] were also defined.
IVI instrument drivers[edit]
When the IVI Foundation took over the Alliance in 2002, it defined a new generation of instrument drivers to replace the VXIplug&play standard. The IVI instrument driver specification intends to overcome the drawbacks of VXIplug&play. These IVI (Interchangeable Virtual Instrumentation) drivers[4] are currently defined in three different architectures:
- The IVI-COM driver architecture[5] is based on the Microsoft Component Object Model.
- The IVI-C drivers are based on C programming language shared components (shared libraries).
- The IVI.NET driver architecture was specified in 2010.[5][6] The IVI.NET drivers are based on the .NET framework.
Remote control of instrumentation[edit]
Instrument drivers allow quicker development of remote-control applications for instrumentation. The drivers reduce the difficulty of string formatting when using SCPI commands by providing a well-defined API. The IVI and VXIplug&play Instrument Drivers use the VISA as the hardware abstraction layer so that hardware-independent applications can be developed.
Visa Driver Download
I/O hardware abstraction layer VISA[edit]
The VISA library allows test and measurement equipment to be connected through various hardware interfaces. The following interfaces are available:
- GPIB/IEEE-488
- VXI-11[7] (over TCP/IP)
- USB488/USBTMC (USB Test & Measurement), USB Test & Measurement Class Specification[8]
- HiSLIP[9] (over TCP/IP).
LXI[edit]
The LAN eXtensions for Instrumentation (LXI) standard defines the communications protocols for controlling test and measurement systems using Ethernet. The standard requires vendors to offer IVI compliant instrument drivers.
See also[edit]
References[edit]
Visum Driver Online
- ^'IVI Foundation Specifications'. IVI Foundation.
- ^'VXIplug&play Alliance'. IVI Foundation.
- ^'VPP-3.1: Instrument Drivers Architecture an Design Specification'(PDF). IVI Foundation.
- ^'IVI Driver Specifications'. IVI Foundation.
- ^ ab'IVI-3.1: Driver Architecture Specification'(PDF). IVI Foundation.
- ^'IVI-3.18: IVI.NET Utility Classes and Interfaces Specification'(PDF). IVI Foundation.
- ^'VXI-11 Bus Specification'. VXI Bus Consortium.
- ^'USB Test & Measurement Class Specification'. USB Implementers Forum Inc. Archived from the original on 2010-03-26.
- ^'IVI-6.1: High-Speed LAN Instrument Protocol (HiSLIP)'(PDF). IVI Foundation.
Visa Driver Labview
Visa Driver Wizard
External links[edit]
Visa Driver Ni