Appendices
MS-860 Industrial Raster Reader User’s Manual
A-31
Appendix M — Glossary of Terms
Analog Gain Adjustment (AGC). Adjustment to signal strength that seeks to maintain
a constant level regardless of the range of the symbol.
Application Record. A variation of UCC/EAN-128 which adds an application identifier
to symbol data, including user-definable separators, brackets, and padding.
Autodiscriminate. The ability to decode several different symbologies without chang-
ing configuration.
Auxiliary Port. Provides RS-232 connections to an auxiliary terminal or device for
remote viewing, for the transfer of data to and from the host, and under certain condi-
tions as a configuration port.
Bar Code. The medium or label on which a symbol is printed or etched.
Bar Code Data. The information that is transmitted from a decoded bar code symbol.
Baud Rate. The number of discrete signal events per second. Bits per second.
Calibration. A routine that cycles through various optical settings and selects the com-
bination that produce the best read rate.
Check Digit. A Modulus 43 or Modulus 10 digit that is added to the symbol message for
additional data integrity.
Configuration. A setup or process of changing a reader’s settings to conform to a spe-
cific application. A physical arrangement of components.
Concentrator. Intermediary device that relays data from readers to a host and com-
mands from the host to the reader or other devices.
Connector. Physical device (plug or socket) on a device or cable to provide in/out con-
nectivity for various circuits and pins.
Counter. Memory space provided to keep track of reader events.
Daisy Chain. Linkage of master and secondary readers to allow data to be relayed up
to the host via auxiliary port connections.
Decode. A good read. The successful scanning and decoding of the information
encoded in symbol.
Default. (verb) Restore Microscan or customer default settings, initialize serial com-
mands and reset all counters.
Defaults. (noun) The settings that are restored whenever a default takes place.
Delimited. A command or field that is bracketed by pre-defined characters.
Decode Rate (DR) The number of decodes per second that a given reader is capable of
receiving.
Depth of Field. The distance between the minimum and maximum range in which
symbols have been read.
Discrete I/O. Inputs and outputs characterized by discrete signal transitions from one
voltage level to another so that digital switching can occur.
Dynamic Setup. Testing and configuration done with symbols in motion.
EPROM. Erasable, programmable, read only memory.
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