Definition

TErrestrial Trunked RAdio (TETRA) standard was designed to meet some common requirements and objectives of the PMR and PAMR market alike. One of the last strong holds of analog technology in a digital world has been the area of trunked mobile radio. Although digital cellular technology has made great strides with broad support from a relatively large number of manufactures, digital trunked mobile radio systems for the Private Mobile Radio (PMR) and Public Access Mobile Radio (PAMR) market have lagged behind. Few manufacture curren ....etc

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Terrestrial trunked radio (TETRA) is the modern digital private mobile radio (PMR) and public access mobile radio (PAMR) technology for police, ambulance, fire, transport and security services. It is use by utilities, the military, public access, fleet management, closed user groups, factory site services, mining, etc. In short, TETRA is digital radio.TETRA uses Time Division Multiple Access (TDMA) technology with four-user channels one radio carrier and 25 KHz spacing between carriers. A TETRA trunking facility provides a pooling of all radio ....etc

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Definition

TErrestrial Trunked RAdio (TETRA) standard was designed to meet some common requirements and objectives of the PMR and PAMR market alike. One of the last strong holds of analog technology in a digital world has been the area of trunked mobile radio. Although digital cellular technology has made great strides with broad support from a relatively large number of manufactures, digital trunked mobile radio systems for the Private Mobile Radio (PMR) and Public Access Mobile Radio (PAMR) market have lagged behind. Few manufacture curren ....etc

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Television systems that have a resolution that meets standards but not considered high definition, this is what Standard-definition television or SDTV refers to. This usually refers to digital television, especially while broadcasting at the same (or similar) resolution as analog systems. In ATSC, SDTV can be broadcast in 704 pixels ? 480 lines with 16:9 aspect ratio (40:33 rectangular pixel), 704 pixels ? 480 lines with 4:3 aspect ratio (10:11 rectangular pixel) or 640 pixels ? 480 lines with 4:3 ratio (and square pixels). The refresh rate can ....etc

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Definition

Compact peripheral component interconnect (CPCI) is an adaptation of the peripheral component interconnect (PCI) specification for industrial computer applications requiring a smaller, more robust mechanical form factor than the one defined for the desktop. CompactPCI is an open standard supported by the PCI Industrial Computer Manufacturer's Group (PICMG). CompactPCI is best suited for small, high-speed industrial computing applications where transfers occur between a number of high-speed cards.

It is a high-performance indust ....etc

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