DVST Installation Guide

Glossary

15Glossary

DVST

Digital Video Storage and Transmission

ISDN

Integrated Services Digital Network - A digital telephone system capable of

 

transmitting data, speech, images and text.

PSTN

Public Subscriber Trunk Network - The standard telephone system used for

 

speech and fax communication.

Speed of Update

The time taken to refresh a single picture.

Software

Video data compression achieved by computer program processing.

Compression

 

Hardware

Video data compression taking place in specialised purpose built microchips.

Compression

 

k bytes

Measurement expressing the size of digital computer memory

k bits per

Measurement expressing the speed at which data can be transmitted.

second

 

Compression

Taking standard video signals and reducing these into compact digital data.

Decompression

Taking digitally compressed DVST information and restoring this to normal

 

video images.

Complete

Each time the picture is transmitted, or stored to memory, the entire picture is

compression

compressed.

Conditional

Update only the parts of the picture that have changed. The first time the

Updating

picture is transmitted the entire picture is compressed. Thereafter only the

 

parts of the picture that change are transmitted.

DAT

Digital Audio Tape, the new technology for recording digital information on a

 

special tape cassette. Massive storage can be achieved in a very small

 

package.

MODEM

MOdulator/DEModulator used to connect the DVST unit to a standard

 

telephone line.

Terminal

Used to connect the DVST to an ISDN digital telephone line.

Adapter

 

Dedicated Micros Ltd.

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Guardian Technologies DFT 150/175, DVST manual 15Glossary, Isdn

DVST, DFT 150/175 specifications

Guardian Technologies has made significant strides in the air purification industry with its innovative DFT 150 and DFT 175 models, designed to enhance indoor air quality for both residential and commercial spaces. These advanced devices leverage cutting-edge technology to deliver clean, fresh air, addressing the increasing need for effective air purification solutions.

One of the standout features of the DFT series is its multi-stage filtration system. Both the DFT 150 and DFT 175 are equipped with a pre-filter that captures large particles, such as dust and hair, followed by a true HEPA filter. This HEPA filter is capable of capturing 99.97% of airborne pollutants as small as 0.3 microns, including allergens, mold spores, and pet dander. This is an essential feature for individuals suffering from allergies or respiratory issues, ensuring that the air they breathe is significantly cleaner.

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The sleek, modern design of the DFT series ensures they blend seamlessly into any decor. With portable options, users can easily move these units from one room to another, providing flexibility in air purification.

Moreover, the DFT models come equipped with easy-to-replace filter indicators, notifying users when it’s time to replace the filters. This convenience promotes consistent air quality management without the hassle of manual reminders.

In conclusion, Guardian Technologies' DFT 150 and DFT 175 models represent an excellent investment for anyone looking to improve indoor air quality. Their sophisticated filtration technology, additional UV-C features, energy efficiency, and user-friendly design make them a top choice for air purifiers in the market today.