Microscan MS-890 User Manual page 307

Appendices
Symbol Length — Regardless of orientation, the measurement taken across the symbol's
bars from one end to the other, including the quiet zone.
Symbology — A set of symbols, such as Code 39 or Code 128, that have special rules to
define the widths and positions of bars and spaces to represent specific numeric or
alphanumeric information.
Symbology ID — An AIM standard prefix character that identifies the symbol type.
Symbol Speed — The distance per second that a symbol moves as it travels through the
scan lines.
Symbol Transitions — The transition of bars and spaces on a symbol, used to detect
the presence of a symbol on an object.
Tilt — Symbol (or scanner) rotation around the center line of the scan beam.
Timeout — A user-selected period of time that ends a scanner's read cycle.
Tracking — Adjustment of the precision of analog-to-digital conversion.
Transparent — Data is passed between the auxiliary port and the host with keyed data
echoed to the auxiliary port
Trigger — A signal, transition, or character string that initiates a read cycle.
TTY — Abbreviation for TeleTYpewriter. This is a device that sends information character
by character over an analog line.
Watchdog Timer — A security device that detects system crashes and attempts to reset
the scanner.
Watchdog Reset — A reset that is forced whenever the software locks up.
Wildcard — User-defined character entered into a master symbol to permit matches with
variable characters.
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MS-890 Industrial Automation Scanner User Manual