1-10

From A to B

ABC symbol
American Blood Commission symbol, developed in 1977 by the Committee for the Commonality in Blood Banking Automation (CCBBA) as a bar code standard for automated systems in the blood service community. The symbology used in the ABC symbol is Codabar.

access point
A LAN product that acts as a bridge between an Intermec 2.4 GHz RF network and an Ethernet network.

accumulate
An operating parameter setting that allows the reader to store scanned labels in a buffer until a transmit command is entered.

Accumulate mode
Operating mode in which the terminal or reader stores scanned information in the buffer until it receives a transmit command.

accuracy
The determination of whether an element width or intercharacter gap width (if applicable) differs from its nominal width by more than the printing tolerance.

ACK
Acknowledge character. A handshake character that indicates that a message was received.

acknowledgment delay
Specifies the maximum amount of time that may elapse before the controller determines that a device did not receive the message.

ADC
Automated data collection. Technologies that automate data collection at the source such as bar code, biometrics, machine vision, magnetic stripe, OCR (Optical Card Readers), voice recognition, smart cards, and RFID (Radio Frequency Identification).

ADDR
Used in Multi-Drop protocol. Each device must have a unique number (address) assigned.

address
Characters that are used by a device to locate another device in a network. See also group address.

Advanced Setup
The GUI that runs on the Model 200 Controller and allows you to configure the controller. See also Fast Setup.

AFF
Affirmative acknowledge character. This character enables or disables the handshake event, and also indicates an affirmative acknowledge to a message.

AID
Attention identifier. A character in a data stream indicating that the user has pressed a key, such as Enter, requesting an action by the system.

alignment
In an automatic identification system, the relative position and orientation of a scanner to the symbol.

alphanumeric keypad, TRAKKER Antares terminal
The alphanumeric keypad on the terminal has 56 keys to type alphabetic and numeric characters. Although the keypad is smaller than a desktop terminal keyboard, you use special keys on the terminal's keypad and press key combinations to access all the keys and functions. Compare to large numeric keypad.

alphanumeric
The character set that contains letters, numbers, and usually other characters such as punctuation marks.

alphanumeric keypad, JANUS reader
The alphanumeric keypad on the reader is an all-purpose keypad with 52 keys. Although the keypad is smaller than a regular PC keyboard, you use special keys on the reader's keypad and press key combinations to access all 102 keys that are available on a PC keyboard. The alphanumeric keypad is available in English, French, German, Italian, and Spanish.

ANSI
American National Standards Institute. A non-governmental organization responsible for developing voluntary manufacturing standards.

aperture
The opening in an optical system that establishes the field of view.

API
Application programming interface. A well-defined interface to routines that an application can use to request and perform system-level tasks.

APPC
Advanced program to program communications. APPC is an LU 6.2 protocol in an SNA network. APPC supports client/server and distributed computing between IBM mainframes, and midrange and personal workstations.

application
1. One or more programs that perform functions required by an end user. Compare with utility. 2. A program that DCM interfaces with through its channeling system. An application is a destination where messages are deposited, such as a shop floor management program. 3. A software program that makes calls to the operating system and manipulates data files allowing a user to perform a specific job.

application break bit
A flag in the reader that an application checks when you turn on the JANUS reader. If the bit is not set to 1, the application will resume running. If the bit is set to 1, the application will not resume. You press the application break sequence to set the application break bit.

application break sequence
A series of keys you press to stop an application from resuming after you turn the JANUS reader off and then on again. Usually you use these keys when an application is locked up and you do not want to cold boot the reader to clear the memory.

application channel file
A file used by DCM to store transactions destined for an application that DCM has determined to be nonactive. Also referred to as an application auxiliary file.

Application companion disk
One of the disks that Intermec ships with your JANUS reader. This disk contains applications such as Communications Manager and IRLXDESK.EXE. This disk also contains PC card drivers and utilities that control the reader's operation, prepare the reader to use the different types of PC cards, customize the reader to use the PC card software, and provide you with helpful tools.

ASCII
American Standard Code for Information Interchange. A standard seven bit code almost always transmitted with a parity bit for a total of eight bits per character. The ASCII set consists of both control and printing characters. ASCII was established by the American National Standards Institute to achieve compatibility between various types of data communication equipment. Equivalent to the International ISO 7-bit code. ASCII is the most commonly used code for non-IBM equipment. See also EBCDIC.

ASCII control character
One of the first 32 characters (0 through 31 in decimal representation) in the ASCII character set. Each of these characters has a standard control function, such as backspace or carriage return.

aspect ratio
In a bar code symbol, the ratio of bar height to symbol length.

asynchronous
In a data communication system, an arrangement without an associated clock that ensures that every character is transmitted independently.

ATA flash PC card
A type of memory PC card that provides additional disk storage space, not more executable conventional memory, on a JANUS reader.

audio connector
The audio connector lets you attach a miniature-plug headphone or earphone into the JANUS 2010 so you can monitor the reader's audio signals in a noisy environment. The audio connector is located at the top of the reader near the wand/scanner connector. When you plug in a headphone or earphone into the audio connector, the reader's external beeper is silent.

audio signals
The terminal or reader has a beeper and a clicker that produce audio signals to indicate terminal status. You can change the beep volume and enable or disable the keypad clicker with configuration commands.

audit trail
A means of tracking messages in DCM. When the audit process is on, all DevComm transactions sent to the message handler's channel are also written to the file DCMAUD.DAT. When the audit process is off, only failed and undeliverable transactions are written to the DCMAUD.DAT file.

autodiscrimination
A feature that enables a bar code reader to interpret a scanned bar code label, identifying both the symbology and the data encoded in the label.

Auto-Loader
A DOS utility used to change the contents of drive C. You can also use it to configure the reader to operate in any language supported by DOS NLS (National Language Support). You run Auto-Loader on a host connected to the reader's COM1 port.

Automatic mode
A scanner mode that allows you to activate the scanner once and scan a series of bar codes. When you release the Scan button or trigger on a cabled scanner, the scanner turns off. To scan the same bar code more than once, you must release the button or trigger, or scan a different bar code before attempting a second scan.

automatic shutoff
A terminal or reader configuration feature that defines the maximum time the terminal stays on when there is no activity. At automatic shutoff, the contents of memory are saved and the terminal or reader resumes when it is turned on again.
average background reflectance
Expressed as a percentage; the average of the background reflectance from at least five different points on a sheet.

background
1. A program running in the background cannot be directly controlled by the operator. If it is brought into the foreground, it can be directly controlled by the operator. You can run several background programs at one time, but you can only run one foreground program at a time. 2. The spaces, quiet zones, and area surrounding a printed bar code symbol.

backing
Silicon release liner on media to which labels are attached until ready for use.

backlight
A light built into the terminal or reader display that makes it easier to view the display in dimly lit environments.

BAK
Bad Program Acknowledgment character. This character is sent from the bar code reader to indicate that the IRL program received from the host could not be successfully compiled. The program should be corrected and retransmitted.

bandwidth
The size in Hertz of the frequency range that a signal transmission occupies. Typical narrow band signals occupy a 25 KHz bandwidth. The 2.4 GHz radio frequency signal occupies a 1 MHz bandwidth.

bar
The darker element of a printed bar code symbol.

bar code
An automatic identification technology that encodes information into an array of adjacent parallel rectangular bars and spaces of varying widths.

bar code character
A single group of bars and spaces that represent an individual number, letter, punctuation mark, or other symbol.

bar code density
Number of data characters that can be represented in a linear unit of measure. Bar code density is often expressed in characters per inch. See also density.

bar code label
A label that contains a bar code symbol and that can be affixed to an object.

bar code reader
See reader.

bar code symbol
A printed or photographically reproduced bar code that contains a quiet zone, a start character, one or more data characters, a stop character, and a trailing quiet zone. The data characters may include a check character.

bar code symbology
See symbology.

bar height
The bar dimension perpendicular to the bar width. Same as bar length.

bar length
See bar height.

bar width
The thickness of a bar measured from the edge closest to the symbol start character and to the trailing edge of the same bar.

bar width reduction
The practice of making the nominal bar width dimension on file masters or printing plates more narrow to compensate for systematic errors in some printing processes. Bar width reduction can have positive or negative values.

bar/half-bar code
An automatic identification system, created in the late 1960s, that uses a two-track direct binary symbology. It was adopted by the U.S. Postal Service in the late 1980s as the basis for its Postnet Code.

baseband
A network in which the entire bandwidth of the transmission medium is used by a single digital signal. No modulation techniques are used.

batch takeup
A device that rewinds media; useful for printing batches of labels.

battery pack locks
The two yellow switches that, along with the battery pack release button mechanism, hold the battery pack onto a JANUS 2010.

baud rate
The number of discreet conditions or signal events per second. In RS-232 and RS-422/485 systems, baud rate is the same as bits per second (bps).

BCD
Binary coded decimal. A numbering system that uses base 2 and represents each decimal digit with four binary digits. Reading from left to right, the weighting values are equal to 8, 4, 2, and 1.

beam break
A type of read window that detects the presence of a package.

BEL
A command character that instructs the printer to return an error status code.

BFT
1. Binary file transfer. The process or method of transmitting a binary file (such as an executable file) from one computer to another. 2. Batch file transfer. The process of transferring the contents of a hot standby file to a batch file transfer NetComm. The NetComm transfers the data as efficiently as possible to the remote APPC application.

bidirectional
A bar code label that can be read from one start/stop character to the other; left to right or right to left.

binary
A system that encodes data as zeros and ones.

binary file
A file that contains a sequence of 8-bit data characters or executable code. Binary files require special software for transmission. See also BFT.

bindery emulation
NetWare 4.0 feature that lets you emulate the bindery database system that was available in all previous versions.

BIOS
Basic input-output system. The part of a computer operating system that handles communications between a program and external devices, such as a printer and electronic displays.

bit
An abbreviation for binary digit. A binary digit is a single element (0 or 1) in a binary number. Eight bits equal one byte.

bit rate
The speed at which bits are transmitted, usually expressed in bits per second. See bps.

blank field
A field that is filled with ASCII space (SP) characters. DCM uses SP rather than NULL for its empty fields in the header.

block
A sequence of continuous data characters or bytes transmitted as a unit. A coding procedure is usually applied for synchronization or error control purposes.

bolt-on
A software application that performs specific tasks and interfaces with an Enterprise Resource Planning (ERP) system. Examples of bolt-ons that interface between Intermec solutions and ERP systems include Manufacturing Execution Systems (MES) and Warehouse Management Systems (WMS).

boot (verb)
1. Usually means to invoke a bootstrap process, which involves building up a system from some simple preliminary instructions or information. 2. A boot invokes the BIOS boot sequence, clears all memory, and performs a complete power-on self test (POST) to ensure that the hardware and peripherals are operational. A boot initializes the system hardware for use by the system firmware and loads the default configuration currently stored in flash memory.

Boot companion disk
One of the disks that Intermec ships with your JANUS reader. The Boot Utility companion disk contains INTERSVR.EXE and other files you may need.

Boot Loader menu
The menu on the JANUS reader used to reboot the reader, to dump the reader's RAM, to reload or upgrade the reader's software, or to use Storage mode.

BOOTP server
Bootstrap protocol server. A device that assigns an IP address in response to a query from an IP node. In this query, the IP node supplies its physical address. The BOOTP server then checks its tables to determine the corresponding IP address.

Boot Utilities companion disk
One of the disks that Intermec ships with your JANUS reader. This disk contains the files you need to load or upgrade the reader's system software. This disk also contains the README.DOC, a text file that describes important information about the reader that was unavailable when the manual was published. This disk also contains a batch file, INSTALL.BAT, that you can use to install Auto-Loader onto a host.

bps
Bits per second. The unit of measure used to describe the rate of data transmission. For example, 1200 bits per second means that there are 1200 data bits transmitted per second. See bit rate.

bridge
A LAN product that incorporates the first two layers of the OSI model and allows connection of networks or subnetworks with similar architectures. Intermec's 0100 and 0110 Access Points are bridges.

broadcast
A type of transmission in which a message sent from the host is received by many devices on the system.

BRU
Base radio unit. A device that transmits messages over radio frequency (RF) waves between a controller and data collection devices.

buffer
An area of storage used to hold data being transferred from one device to another.

byte
A combination of eight bits in a predetermined pattern, designed to represent a digit or an alphanumeric character.