User's Manual

Glossary - 6 MC18 Product Reference Guide

Quiet Zone. A clear space, containing no dark marks, which precedes the start character of a bar code symbol and

follows the stop character.

RAM. Random Access Memory. Data in RAM can be accessed in random order, and quickly written and read.

RF. Radio Frequency.

ROM. Read-Only Memory. Data stored in ROM cannot be changed or removed.

Router. A device that connects networks and supports the required protocols for packet filtering. Routers are typically

used to extend the range of cabling and to organize the topology of a network into subnets. See Subnet.

Scanning Mode. The scanner is energized, programmed and ready to read a bar code.

Scanning Sequence. A method of programming or configuring parameters for a bar code reading system by scanning

bar code menus.

SDK. Software Development Kit

Shared Key. Shared Key authentication is an algorithm where both the AP and the MU share an authentication key.

Soft Reset. See Warm Boot.

Specular Reflection. The mirror-like direct reflection of light from a surface, which can cause difficulty decoding a bar

code.

Subnet. A subset of nodes on a network that are serviced by the same router. See Router.

Substrate. A foundation material on which a substance or image is placed.

Symbol. A scannable unit that encodes data within the conventions of a certain symbology, usually including start/stop

characters, quiet zones, data characters and check characters.

Symbology. The structural rules and conventions for representing data within a particular bar code type (e.g. UPC/EAN,

Code 39, PDF417, etc.).

TCP/IP. (Transmission Control Protocol/Internet Protocol) A communications protocol used to internetwork dissimilar

systems. This standard is the protocol of the Internet and has become the global standard for communications. TCP