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period (Scanner Time-Out Duration) is expired. Unlike the Auto Off
mode, the scanner will continue to scan and the scanning period is
re-counted each time there is a successful read.
• Alternate Mode: The scanner will start scanning once the switch is
triggered. The scanner will continue scanning until the switch is
triggered again.
• Momentary Mode: The scanner will be scanning as long as the
switch is depressed.
• Repeat Mode: The scanner is always scanning as per Continuous
Mode. But now the switch acts like a “re-transmit button”. If the
switch is triggered within 1 second after a good read, the same data
will be transmitted again without actually reading the barcode. This
“re-transmit button” can be triggered as many times as user desired,
as long as the time between each triggering does not exceed 1
second. This scan mode is most useful when the same barcode is to
be read many times.
• Laser Mode: This is the scan mode most often used on laser
scanners. The scanner will start scanning once the switch is pressed.
The scanning continues until either a barcode is read, the switch is
released or a preset scanning period (Scanner Time-Out Duration) is
expired.
• Test Mode: The scanner is always scanning. The scanner will
decode repeatedly even with the same barcode.
By default, the scan mode is Auto Off mode for scanners with trigger
switch, and is Continuous mode for switch-less scanners.
2.4 Re-read Delay
If the scanner mode is set to Continuous, Auto Power Off, Alternate, or
Momentary mode, the scanner will prevent accidentally reading the same
barcode twice by using a Re-read Delay (Blocking Time). The barcode
must be taken away from the scanning line longer than the Re-read Delay
to allow second reading of the same barcode. The Re-read Delay can be
set by the user.
2.5 Scanner Time-out Duration
This parameter is used to limit the maximum scanning period when the
scan mode is either Auto Off Mode or Auto Power Off Mode. This time-out
duration is specified in units of second. The default time-out duration is ten
seconds.
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2.6 Reading Redundancy
This parameter is used to specify the levels of reading (decoding) security.
If No Redundancy is selected, only one successful decoding can make the
reading valid. If Three Times Redundancy is selected, it will take 3
successful decodes to make the reading valid. It is obvious that the more
redundancy the user selects, the higher the reading security and thus the
slower the reading speed. The user must compromise between decoding
security and decoding speed if the security feature is needed.
2.7 Supported Symbologies
Most of the popular barcode symbologies are supported. Each symbology
can be individually enabled or disabled. The scanner will automatically
discriminate and recognize all the symbologies that are enabled. The
supported barcode symbologies are listed below.
• Code 39 (Standard / Full ASCII)
• Italy Pharmacode
• French Pharmacode
• Industrial 25
• Interleave 25
• Matrix 25
• Codabar (NW-7)
• UPCA (with or without Add-on)
• UPCE (with or without Add-on)
• EAN8 (with or without Add-on)
• EAN13 (with or without Add-on)
• Code 93
• Code 128
• EAN 128
• MSI
• Plessey
2.8 Negative Barcodes
The Pulsar C can be configured to read negative barcodes. Normally,
barcodes are printed with the color of the bars darker than that of the
spaces. But for negative barcodes, they are printed in the opposite sense
just like negative films. The spaces of the negative barcodes are printed
with a color darker than that of the bars.