Glossary - Honeywell HDVR Reference Manual

Glossary

A
B
C
D
E
Document 900.0261 Rev 1.00
ASCII American Standard Code for Information Interchange. A code for representing
alphanumeric information.
ATM Automated Teller Machine. The street corner banking machine that is usually
hooked up to a central computer through leased local lines and a multiplexed data
network.
Bandwidth The "width" of a communication channel between the highest and lowest
frequencies carried. Bandwidth is a measure of information-carrying capacity. In analog
communications, bandwidth is typically measured in Hertz—cycles per second In digital
communications, bandwidth is typically measured in bits per second.
Baud rate The data transmission speed.
BNC Bayonet Neill-Concelman connector. A bayonet-locking connector for slim coaxial
cables, like those used with Ethernet.
CCTV Closed-circuit Television.
Compression Reducing the representation of the information but not the information
itself. Compression saves transmission time or capacity. It also saves storage space on
storage devices such as hard disks, tape drives, and removable disks.
Data bit The smallest unit of information (data) a computer can process. A bit can have
a value of zero (a space) or one (a mark).
Duplex A data communications term meaning simultaneous two-way transmission in
both directions.
Ethernet A local area network used for connecting computers, printers, workstations,
terminals, servers, and so on within the same building or campus. Ethernet operates over
twisted wire and over coaxial cable at speeds up to 10 Mbps.
HRDV Reference Guide
211