Symbol-technologies MC50 User Manual download pdf (Page 91)

Glossary GL-11

Scanner An electronic device used to scan bar code symbols and produce a

digitized pattern that corresponds to the bars and spaces of the

symbol. Its three main components are:

1. Light source (laser or photoelectric cell) - illuminates a bar code.

2. Photodetector - registers the difference in reflected light (more

light reflected from spaces).

3. Signal conditioning circuit - transforms optical detector output

into a digitized bar pattern.

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

Self-Checking Code A symbology that uses a checking algorithm to detect encoding

errors within the characters of a bar code symbol.

Shared Key Shared Key authentication is an algorithm where both the AP and

the MU share an authentication key.

SHIP Symbol Host Interface Program.

SID System Identification code. An identifier issued by the FCC for each

market. It is also broadcast by the cellular carriers to allow cellular

devices to distinguish between the home and roaming service.

SMDK Symbol Mobility Developer’s Kit.

Soft Reset See Warm Boot.

Space The lighter element of a bar code formed by the background

between bars.

Spectrum24 Symbol’s frequency-hopping, spread spectrum cellular network.

Specular Reflection The mirror-like direct reflection of light from a surface, which can

cause difficulty decoding a bar code.

Spread Spectrum A technique for uniformly distributing the information content of a

radio signal over a frequency range larger than normally required

for robust transmission of data. Spreading the signal without

adding additional information adds significant redundancy, which

allows the data to be recovered in the presence of strong

interfering signals such as noise and jamming signals. The primary

advantage of spread spectrum technology is its ability to provide

robust communications in the presence of interfering signals.

Spring Radio Protocol A radio protocol that may be used by the Symbol Spectrum24 radio

card. Symbol Radio cards that use the Spring protocol also have an

Net ID.

Start/Stop Character A pattern of bars and spaces that provides the scanner with start

and stop reading instructions and scanning direction. The start and

stop characters are normally to the left and right margins of a

horizontal code.

STEP Symbol Terminal Enabler Program.

Subnet A subset of nodes on a network that are serviced by the same

router. See Router.

1 2 ... 86 87 88 89 90 91 92 93 94 95 96 ... 101 102

Comments to this Manuals

No comments

Symbol-technologies MC50 User Manual Page 91

Comments to this Manuals

Related products and manuals for PDAs Symbol-technologies MC50