Gpib bus pdf

For a comparison on the NI This content is not available in your preferred language. Environment shows products that are verified to work for the solution described in this article. This solution might also apply to other similar products or applications. Prerequisites Consult the pinout or documentation for your GPIB instrument and make sure you have the correct cables and GPIB instrument control device to connect the instrument to the computer.

Open MAX from the Start menu. Expand Devices and Interfaces. If not specified, the controller number defaults to 0. Figure 1. Scanning for Instruments in MAX. Open a service request. Purchase or renew support services.

Was this information helpful? Not Helpful. Using this the maximum data rate achievable is around 1 Mbyte per second, but this is always governed by the speed of the slowest device.

This provides an ideal physical interface for the standard. This helps the physical setting up of the bus and prevents complications with special connection boxes or star points. Within IEEE , the equipment on the bus falls into three categories, although items can fulfil more than one function:. Many items of test equipment will fulfil more than one function.

For example a voltmeter which is controlled over the bus will act as a listener when it is being set up, and then when it is returning the data, it will act as a talker.

Often GPIB cards can be used in a variety of roles, but these GPIB cards are most often used as controllers as they tend to reside in the controlling computer. Most test instruments that might be intended for use with the GBIP interface would have this fitted as standard and would therefore not require and additional GPIB card. Like any other technology, GPIB has advantages and disadvantages that need to be weighed up when considering its use.

GPIB capability is included on a large number of bench instruments, but when opting to use the facility to build a system, it is necessary to consider all the advantages and disadvantages before committing time and cost to its use. The GPIB has been available since the late s, but despite its age, it is still a valuable tool that is widely used throughout the industry.

Most bench instruments have GPIB fitted as standard or as an option making it easy to use test equipment in a variety of applications apart from being dedicated to use in an ATE test stack. In view of its flexibility and convenience and it is likely to remain in widespread use for some years to come. Within IEEE , the equipment on the bus falls into three categories, although items can fulfil more than one function: Controller: As the name suggests, the controller is the entity that controls the operation of the bus.

It is usually a computer and it signals that instruments are to perform the various functions. The GPIB controller also ensures that no conflicts occur on the bus. If two talkers tried to talk at the same time then data would become corrupted and the operation of the whole system would be seriously impaired. It is possible for multiple controllers to share the same bus; but only one can act as a controller at any particular time.

Listener: A listener is an entity connected to the bus that accepts instructions from the bus. An example of a listener is an item such as a printer that only accepts data from the bus. It could also be a test instrument such as a power supply or switching matrix that does not take measurements. Maximum number of instruments 14 plus controller, i. Data bus width 8 lines.

Handshake lines 3 Bus management lines 5 Connector pin Amphenol typical D-type occasionally used. Possible to connect multiple instruments to a single controller Disadvantages Bulky connectors Cable reliability poor - often as a result of the bulky cables.

Low bandwidth - slow compared to more modern interfaces Basic IEEE does not mandate a command language SCPI used in later implementations but not included on all instruments.