Motorola MK1200, Руководство по продукции

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Glossary
ACK/NAK. ACK/NAK is the default software handshaking.
AirBeam Manager. AirBeam Manager is a comprehensive wireless network management system that provides
essential functions that are required to configure, monitor, upgrade and troubleshoot the
Spectrum24
®
wireless network and its components (including networked terminals). Some
features include event notification, access point configuration, diagnostics, statistical reports,
auto-discovery, wireless proxy agents and monitoring of access points and mobile devices.
Aperture. The opening in an optical system defined by a lens or baffle that establishes the field of view.
ANSI Terminal. A display terminal that follows commands in the ANSI standard terminal language. For
example, it uses escape sequences to control the cursor, clear the screen and set colors.
Communications programs support the ANSI terminal mode and often default to this terminal
emulation for dial-up connections to online services.
ASCII. American Standard Code for Information Interchange. A 7 bit-plus-parity code representing
128 letters, numerals, punctuation marks and control characters. It is a standard data
transmission code in the U.S.
Autodiscrimination. The ability of an interface controller to determine the code type of a scanned bar code. After
this determination is made, the information content is decoded.
Bar. The dark element in a printed bar code symbol.
Bar Code Density. The number of characters represented per unit of measurement
(e.g., characters per inch).
Bar Height. The dimension of a bar measured perpendicular to the bar width.
Bar Width. Thickness of a bar measured from the edge closest to the symbol start character to the trailing
edge of the same bar.
Baud Rate. A measure of the data flow or number of signaling events occurring per second. When one bit
is the standard "event," this is a measure of bits per second (bps). For example, a baud rate
of 50 means transmission of 50 bits of data per second.
Bit. Binary digit. One bit is the basic unit of binary information. Generally, eight consecutive bits
compose one byte of data. The pattern of 0 and 1 values within the byte determines its
meaning.