Microscan MS-3 Manual Book page 200

device addresses and the RS485 standard.
Narrow-bar-width. The width of the narrowest bar of a specific bar code symbol,
expressed in thousands of an inch (or mils) as defined by standard symbol types.
Narrow Margins. Allows the scanner to read symbols with quiet zones less than 8
times the width of the narrow bar element.
Non-delimited. A command that is not bracketed by pre-defined characters.
Noread. A non-read. A condition that occurs when the scanner is set up to decode
symbols but no symbol is scanned during the read cycle.
Normally Closed. A discrete output state that is only active when open.
Normally Open. A discrete output state that is only active when closed.
NOVRAM. Non-volatile random access memory. Data that is saved for power-on is
saved to NOVRAM.
Null. Also spelled Nul. A non-printed ASCII character that acts as a space-holder.
Number of Decodes. The number of times a symbol is scanned by the scanner dur-
ing one pass through the laser beam.
Object Detector. A photo electric device used to sense the presence or absence of an
object (also referred to as a package detector).
Output. A channel or communications line. Data or discrete signals that are transmit-
ted or displayed by a device.
Output Format. The modification of data output according to a user-defined index
of Extraction and Insertion commands.
Parity. An error detection routine in which one data bit in each character is set to 1 or
0 (zero) so that the total number of 1 bits in the data field is even or odd.
Picket Fence Symbol Orientation. A bar code symbol in which the bars are perpen-
dicular to the symbol's direction of travel.
Pitch. Symbol (or scanner) rotation around the center of a line perpendicular to the
symbol's bars.
Point-to-Point. A protocol consisting of a single communications event, typically
used to connect a bar code scanner to a terminal or host computer.
Port. Logical circuit for data entry and exit. (One or more ports may be included
within a single connector.)
Protocol. The rules for communication between devices, providing a means to control
the orderly flow of information between linked devices.
Quiet Zones. Specified "clear" (non printed) areas immediately before and after the
bar code symbol. The area is usually white (for black and white symbol) and at least
10 times the width of the narrowest bar, as measured in thousands of an inch. The
zones can be other than white as long as their densities remain consistent and they
have the required contrast relative to the bars.
RAM. (Random Access Memory) Memory that is lost after power is recycled to the unit.
MS-3 Laser Scanner User's Manual
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