Microscan MS-3000 User Manual page 120

Appendices
End of Read Cycle. The time at which the decoder stops expecting label
information to decode. This can be caused by a timeout, a trigger event, or
a good read.
Focal Length. The distance measured from the scan head to the center of
the depth of field, or focal point.
Good/Bad Pulses. TTL signals sent by the decoder to indicate to a control-
ling device that a good or bad read has occurred.
Good Match. The event occurring when a scanned bar code label matches the
master label information that is stored in the memory of the decoder.
Good Read. The event occurring when a label's data is accurately scanned
and decoded.
Intercharacter Gap. The extra space between the last element of one
character and the first element of the adjacent character of a discrete bar
code symbol.
Label Height. Regardless of orientation, the measurement taken along the
length of a label's individual bars.
Label Length. Regardless of orientation, the measurement taken across
the label's bars from one end to the other, including the quiet zone.
Label Speed. The rate in inches or centimeters per second that a label
moves through the scan beam.
Ladder Label Orientation. A bar code label in which the bars are parallel
to the direction of travel.
Match Code. The ability to compare bar code labels being scanned against
a master label that is stored in the memory of the decoder.
Menu Configuration. The process of changing factory default settings via
a sequence of menus displayed on a terminal monitor.
Mil. One thousandths of an inch or 0.0254 mm. In bar-coding, a measure-
ment that identifies a bar code label by the width of its narrowest element.
Mismatch. An event that occurs when the scanned bar code label does not
match the master label that is stored in the memory of the decoder.
Multidrop. A communications protocol for networking two or more decoders
or other devices with a concentrator (or controller) and characterized by the
use of individual device addresses and the RS-485 standard.
Narrow Bar Width. The width of the narrowest bar of a given label,
expressed in thousands of an inch (or mils).
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MS-3000 Single Head Decoder User's Manual