Symbol Technologies MC50

MC50 User GuideGL-4

Code 128 A high density symbology which allows the controller to encode all

128 ASCII characters without adding extra symbol elements.

Code 3 of 9 (Code 39) A versatile and widely used alphanumeric bar code symbology with

a set of 43 character types, including all uppercase letters,

numerals from 0 to 9 and 7 special characters (- . / + % $and space).

The code name is derived from the fact that 3 of 9 elements

representing a character are wide, while the remaining 6 are

narrow.

Code 93 An industrial symbology compatible with Code 39 but offering a full

character ASCII set and a higher coding density than Code 39.

Code Length Number of data characters in a bar code between the start and stop

characters, not including those characters.

Cold Boot A cold boot restarts the mobile computer and erases all user stored

records and entries.

COM port Communication port; ports are identified by number, e.g., COM1,

COM2.

Continuous Code A bar code or symbol in which all spaces within the symbol are

parts of characters. There are no intercharacter gaps in a

continuous code. The absence of gaps allows for greater

information density.

Cradle A cradle is used for charging the mobile computer battery and for

communicating with a host computer, and provides a storage place

for the mobile computer when not in use.

Data Communications Equipment (DCE) A device (such as a modem) which is designed to attach directly to

a DTE (Data Terminal Equipment) device.

DCE See Data Communications Equipment.

DCP See Device Configuration Package.

Dead Zone An area within a scanner's field of view, in which specular

reflection may prevent a successful decode.

Decode To recognize a bar code symbology (e.g., UPC/EAN) and then

analyze the content of the specific bar code scanned.

Decode Algorithm A decoding scheme that converts pulse widths into data

representation of the letters or numbers encoded within a bar code

symbol.

Decryption Decryption is the decoding and unscrambling of received encrypted

data. Also see, Encryption and Key.

Depth of Field The range between minimum and maximum distances at which a

scanner can read a symbol with a certain minimum element width.

Device Configuration Package The Symbol Device Configuration Package provides the Product

Reference Guide (PRG), flash partitions, Terminal Configuration

Manager (TCM) and the associated TCM scripts. With this package

hex images that represent flash partitions can be created and

downloaded to the mobile computer.