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capabilities, it is called an IVI-COM custom driver. If the driver includes the class capabilities, it is called an IVI-COM Class Compliant driver. IVI-COM Class Compliant drivers may or may not include custom capabilities.

Instrument I/O

All IVI drivers communicate to the instrument hardware through an I/O Library. The VISA library is typically used because it provides uniform access to GPIB, RS-232, USB-TMC and LAN instrument. Drivers that communicate with insruments that only use RS-232 or LAN occasionally include their own I/O that does not require VISA.

Shared Components

IVI Foundation members have cooperated to provide common software components, called IVI Shared Components, that ensure compatibility among drivers from various manufacturers. These components provide services to drivers and driver clients that need to be common to all drivers.

IVI Configuration Server: This component is the run-time module responsible for providing configuration data to IVI drivers. The Configuration Server specifically provides system initialization and configuration information.

COM Session Factory: This component can dynamically load an IVI-COM software module without requiring the application program to identify the IVI software module when it is compiled. This allows the test program source code to have all references to a specific instrument removed. This capability is provided in IVI-C using an IVI-C Class driver.

Interchangeability

One aspect of the IVI standard is instrument interchangeability, which allows you to write and compile your program for an instrument from one manufacturer and then swap it out for the same type of instrument from another manufacturer. After making changes to a configuration file on your computer to identify the new instrument (and driver) and the hardware address (if that changes), you can run your program without modifying or recompiling it. That’s in an ideal world, of course.

The minimum necessary requirements for interchangeability include the following:

•Drivers for both instruments must be of the same type (IVI-C or IVI-COM);

•Both drivers must implement the same instrument class. For example, both must conform to the requirements for IviDmm or IviScope;

•For IVI-C, your program must use a Class Driver, which in turn instantiates the Class Compliant Specific Driver and calls class compliant functions in it.

•Your program calls only those Class Extension functions supported by both drivers.

•Your program never calls Instrument Specific functions.

Chapter 11

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HP Drive manual Instrument I/O, Interchangeability
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Drive specifications

HP Drive is a sophisticated storage solution designed to meet the demands of modern computing environments. It integrates cutting-edge technologies and features to ensure reliable performance, high capacity, and enhanced data security.

One of the main features of HP Drive is its versatility. It is compatible with a variety of systems, both for personal and enterprise use. This flexibility allows users to integrate HP Drives into their existing hardware setups without compatibility issues. Whether for desktops, laptops, or servers, HP Drive offers multiple form factors, including 2.5-inch and 3.5-inch drives, to cater to different requirements.

Another essential characteristic of HP Drive is its high storage capacity. With options often reaching up to several terabytes, users can store vast amounts of data, including high-definition videos, large databases, and extensive software libraries. The increased capacity is particularly beneficial for businesses requiring extensive data storage and retrieval.

Speed is a critical factor in data storage, and HP Drive employs the latest technologies to enhance performance. Many HP Drives utilize Solid State Drive (SSD) technology, which provides significantly faster data access and read/write speeds compared to traditional Hard Disk Drives (HDD). This results in quicker boot times, reduced application loading times, and overall improved system responsiveness. Moreover, some models integrate NVMe technology, elevating the performance even further with faster data transfer rates.

Data security is a paramount concern for users, and HP Drive addresses this with several features. Many models come equipped with built-in encryption technology, safeguarding sensitive data against unauthorized access. Additionally, HP offers robust support options including data recovery services and software solutions to ensure that users can recover their information in the event of a drive failure.

In terms of durability and reliability, HP Drive products undergo extensive testing to ensure they can withstand harsh operating conditions. They are designed to operate under various environmental factors, making them suitable for both office and industrial settings.

Overall, HP Drive stands out as a premier choice for those seeking a reliable, high-capacity, and high-performance storage solution. Its combination of advanced technologies, extensive compatibility, and robust security features make it a top contender in the competitive storage market. Whether for personal use or enterprise needs, HP Drive has proven itself as a dependable option for today's data-driven world.
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