Accu-Sort 10, Operation And Maintenance Manual

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10
Accu-Sort Systems
Non-Read
The absence of data at the scanner output after an attempted scan due to no code, defective code, scanner failure or operator error.
Odd Parity
A data verification method in which each character must have an odd number of on bits.
Omnidirectional
Orientation is unpredictable and can be ladder, picket fence, or any angle in between. A single scan line is not sufficient to scan
bar codes oriented omnidirectionally.
Operating Range
The sum of the scanner’s optical throw and depth-of-field.
Optical Throw
Measured distance from the scanner’s window to the near reading distance of the depth of field. Typically, this is the closest a bar
code can be to the scanner’s window and still be properly decoded.
Optimum Reading Distance
Typically, the center of the depth of field.
OCR
Optical Character Recognition.
Orientation
The alignment of the code’s bars and spaces to the scan head. Often referred to as vertical (picket fence) and horizontal (ladder).
Output counter
A counter that is associated with each output condition. The counter increments by 1 each time the condition
occurs.
Oversquare
Used to describe bar codes that are taller (from top to bottom of the bars) than they are wide (from first to last bar).
Trigger or Cart
The standard abbreviation for a signal indicating that an object is passing by the scanner is called Cart. This signal indicates to
the scanner to start or stop reading.
Trigger or Cart Cycle
The time during which the scanner is attempting to read the bar code.
Hardware Cart
This is an electrical signal from a relay, photoeye, or proximity switch indicating that an object is passing by the scanner.
Start and End of Cart Photoeyes
The cart cycle begins when the start of cart photoeye is blocked and continues until the end of cart photoeye is unblocked. Relay
decisions and data communication take place after the end of cart photoeye is unbroken. The diagram below shows start and end
of cart photoeye placement.
Induct Photoeyes
The cart cycle begins when the start of cart photoeye is blocked and continues until the cart photoeye is unblocked. Blocking the
INDUCT photoeye causes relay decisions and data communication. For this placement the distance between the CART and
INDUCT photoeyes must be less than the minimum box size plus the minimum box spacing.
Software Cart
A serial message from an external device that controls the cart cycle.
Self Cart
This form of cart requires no input signal. The scanner is continuously attempting to decode bar codes. When a scanner is in self
cart, there is no way of determining if there is a package present or a NO-READ.
Flip Lens
A moveable lens inside a scanner that increases Depth of Field.
Package Spacing
This is the spacing between items on a conveyor. Package spacing is measured one of two ways: Leading edge of one box to
leading edge of the next or trailing edge of one box to trailing edge of the next. Package spacing is critical to system operations.