1-10

From E to F

EAN
European article numbering; now also called IAN (international article numbering). International standard bar code for retail food packages corresponding to the universal product code (UPC) in the United States. UPC is a subset of EAN, and a reader equipped to read EAN can also read UPC. A reader equipped to read UPC may not decode EAN. The EAN and UPC symbols were developed by IBM and introduced into the market in 1971. The U.S. adopted UPC in 1973; EAN was adopted in 1976.

EBCDIC
Extended binary coded decimal interchange code. Standard eight bit code developed by IBM. See also ASCII.

echoplex
Communication environment in which full duplex terminals work. Any data sent to the host is echoed back to the device that sent the data.

Edge Trigger mode
The laser only turns on or off when you pull the trigger-it completely ignores the trigger release. Thus, if you pull the trigger, it will go on and stay on when you release the trigger. Pulling the trigger a second time will cause the laser to go off. If the laser is on, the timeout and number of decodes per trigger event operate normally and will turn the laser off. Edge Trigger mode is most often used in remote triggering applications. See also Level Trigger mode.

edge triggering
A scanner trigger configuration that makes the laser turn on after you pull the trigger and stay on until you pull it a second time. Simply releasing the trigger does not turn the laser off. If the laser is left on, the scanner timeout turns the laser off. Contrast with level triggering.

EEPROM
Electrically erasable programmable read only memory.

element
A single binary position in a character; dimensionally the narrowest width in a character bar or space. A generic term used to refer to either a bar or a space.

EMM
Expanded Memory Manager. Software that makes expanded memory available to EMS-compatible DOS programs.

EmComm
Emulator communications. EmComms allow transaction data from a data collection device to be mapped to host applications running in a 3270 or 5250 terminal emulator.

emulation
An operating mode in which the printer has the operating characteristics of another printer.

encoded area
The total lineal dimension occupied by all characters of a code pattern, including the start/stop characters and data.

END
End of IRL program/compile character. Sent by the host to tell the reader that the program has been downloaded and to wait for the RUN command.

end device
See data collection device.

environment variable
A specification in a program that defines an operating parameter, such as the command path.

EOF
End of file character. Attached to the last record transmitted in a block of records and after the EOR, if the EOF character field is enabled.

EOM
End of message character. Sent at the end of reader messages and at the end of host messages. The transmitted and received EOM characters can be defined separately.

EOP
End of program block/continue character. Sent by the host after a block of IRL program statements to tell the reader that another block of IRL statements is coming.

EOR
End of record character. Attached to the end of every record transmitted by the polled device if the EOR character field is enabled.

EPROM
Erasable programmable read only memory. A special type of ROM that can be erased by exposing the chip to ultraviolet light. It can be reprogrammed after it is erased.

ERP
Enterprise resource planning. The current evolution of manufacturing resources planning (MRP and MRPII) systems. ERP provides the foundation for integrating enterprise-wide information systems. These systems will link all aspects of a company's operations including human resources, financial planning, manufacturing, and distribution, as well as connect the organization to its customers and suppliers.

error message
A message from a device or program advising the user of an error that requires intervention to solve. For example, if you receive the error message "Unable to establish connection to host. Session ended." when you turn on the terminal, you may need to configure the terminal.

ESD
Electrostatic discharge. Transient, rapid transfer of charge between bodies at different electrostatic potentials, either: caused by direct contact, by arc-over of near proximity, or induced by an electrostatic field.

ESD mat
A flexible work surface composed of vinyl or rubber with an added component to allow static to drain from its surface to the ground through a connected grounding cord.

Ethernet
A type of LAN that allows the transmission of computer data, audio data, and video data. Ethernet uses the access method known as CSMA/CD (carrier sense multiple access with collision detection). Refer to the IEEE 802.3 standard for the specifications.

ETSI
European Telecommunications Standards Institute. European agency responsible for setting and enforcing regulations associated with telecommunications.

execute
To perform an instruction or a computer program.

expanded memory
Memory above 1MB that requires an expanded memory board and expanded memory manager.

extended memory
System memory above 1MB. The reader is initially configured with 64K of extended memory available, which is allocated for use by Intermec applications (IC.EXE and IRL). The reader provides extended memory for control and access to RAM above 1MB. The extended memory conforms to XMS specification 2.0. Extended memory is initialized and managed by the HIMEM.SYS driver.

extended memory manager
Software that makes extended memory available to DOS programs. For example, you must run an extended memory manager such as HIMEM.SYS on the reader to create and use a physical RAM drive.

Fast Setup
A quick configuration program that runs on the controller GUI. Generally, Fast Setup is used to demonstrate the controller, but you can also use it to configure your network if it is a simple one. See also Advanced Setup.

FCC
Federal Communications Commission. U.S. federal government agency responsible for setting and enforcing regulations associated with telecommunications.

FDC
1. Factory data collection system. 2. Floppy disk controller, which regulates the floppy disk.

feed
A printer control panel button that advances the media.

feed/pause
A printer control panel button that advances the media and causes the printer to pause printing.

field
1. A graphic element that is the basic unit of a format. The four basic types of fields are bar code, graphic, line, and text. 2. An area of a host window to which data can be written.

field-formatted screen
A window on a host such as an AS/400 in which input is restricted to specific areas.

FIFO control register (FCR)
First in/first out control register. The FCR contains a hex value that controls how the UART buffer operates. You may need to configure the JANUS reader/device to restore a hex value for the FCR in case you turn off the reader while running a communications application that uses UART 16x550 mode.

file
A collection of related records. DCM recognizes and routes files that have the extensions: .IRL, .CMD, .DAT, and .PF.

film master
A photographic film of a specific bar code or optical character recognition (OCR) symbol that is used to produce a printing plate.

firmware
Software routines stored in read only memory (ROM). Unlike random access memory (RAM), ROM stays intact even without electrical power. See also software.

first read rate (FRR)
The ratio of the number of successful reads on the first scanning attempt to the number of attempts. Commonly expressed as a percentage.

fixed data field
Bar code and text fields that never vary from one label to the next; the data in a fixed field is a permanent part of the format.

fixed format
A format in which the data never varies from one label to the next, such as with a return address label. A fixed format needs no additional data to print a label.

fixed length
Characteristic of a bar code symbology in which the number of characters per symbol is predetermined. Opposite of variable length.

flag character
A character with a data format of fixed position, with contents that vary over a specified range of values; each value representing significant information that is presented to a data processing system.

flash memory
A type of nonvolatile memory. Flash memory must be erased in blocks and is commonly used as a supplement to or replacement for hard disks in portable computers and data collection devices.

flash PC card
A type of memory PC card that provides additional disk storage space, not more executable conventional memory, on the reader. Flash cards retain their data without the use of a backup battery.

flash ROM drive
Drives C and D on the reader are ROM drives that are implemented in flash memory. Drive C is upgradeable, but has limited write capability. Drive D cannot be modified. Both drives use a file allocation table (FAT) type format.

flow control
A method for controlling the flow of data between the reader and the serial port. It stops the transmitting device from sending data when the receiving device buffer fills up and starts it again when the buffer empties. This can be done through software (XON/XOFF) or hardware (CTS/RTS).

font
A character set of a given type size and style.

font-independent OCR
Optical character recognition by generalized algorithms, allowing for wide ranges of character fonts. In the most general case, font-independent OCR extends to bar code patterns as well.

foreground
Programs running in the foreground can be directly controlled (with the keyboard) by the operator. Several background programs may be running simultaneously, but only one foreground program can run at a time.

form feed
A printer control panel button that advances the media.

format
The geometric construction rules that define a particular bar code or symbol.

format file
A collection of printer commands and data that determines the arrangement of fields on a label.

frequency hopping
A spread spectrum technique by which the band is divided into a number of channels and the transmissions hop from channel to channel in a prespecified sequence.

FRR
First read rate. Percentage representing the number of successful reads per 100 attempts for a particular symbol; used as an approximation of "human friendliness" of the bar code reader and symbol to the operational environment.

full ASCII
An operating mode that sets the reader to properly decode Code 39 or Code 93 labels containing data that may include any of the 128 ASCII characters.

full duplex
A data communication term pertaining to a simultaneous two-way independent transmission. See also half duplex.

Function Left key
The Function Left key is a special key on the keypad. You use the ) key to type characters or perform functions that are printed on the left side above the key. When you press )w, the key is held in a buffer and the Function Left key icon appears on the terminal's display. Once you press a key other than )w, the key combination is entered into the terminal and the icon disappears from the display.

function library
A collection of ready-made code that can be used for specific programming tasks. The code can be implemented in an ERP program or called by external applications.

Function Right key
The Function Right key is a special key on the keypad. You use the (key to type characters or perform functions that are printed on the right side above the key. When you press (w, the key is held in a buffer and the Function Right key icon appears on the terminal's display. Once you press a key other than (w, the key combination is entered into the terminal and the icon disappears from the display.