Microscan MS-820 User Manual page 216

Appendix P
Daisy Chain. Linkage of master and slave scanners 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. Restores ROM or Flash settings, initializes serial commands and resets all
counters.
Delimited. A command or field that is bracketed by pre-defined characters.
Decode Rate. The number of reads decoded per second by a scanner or 2D reader
expressed in percentages.
Depth of Field. The distance between the minimum and maximum range in which a
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.
Embedded Memory. Onboard memory device such as EPROM or flash.
End of Read Cycle. The time or condition at which the scanner stops expecting label
information to decode.
Edge. Allows a read cycle to be initiated by a trigger signal from an object detector
when it detects the appearance of an object (rising edge). The read cycle ends with a
good read, a timeout, or a new trigger.
ESP. Easy Setup Program. A portable proprietary Windows/NT based program devel-
oped by Microscan Systems, Inc.
Falling Edge. A change of state (to inactive) associated with a level trigger in which
the scanner stops searching for symbols. (See Rising Edge.)
Fixed Code Length. Increases data integrity by ensuring that only one label length
will be accepted.
Flash Memory. Memory that can be changed by downloading new code and recalled
on power up.
Focal Length. The distance measured from the scanner to the center of the depth of
field, or focal point.
Focus. The point at which the tip of the scan beam is at its narrowest.
Full Duplex. Auxiliary port data is sent directly to the host but not displayed on the
auxiliary port screen.
Gain. Optimal signal strength.
Good Match. The event occurring when a scanned label matches the master label
information that is stored in the memory of the device.
Good Read. A decode. The successful scanning and decoding of the information
encoded in a symbol.
Half Duplex. Auxiliary port data is sent directly to the host and displayed on the aux-
iliary port screen.
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MS-820 Industrial Bar Code Scanner User's Manual