Datalogic PreScan, Руководство по продвинутой настройке

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Getting Started
8 PreScan™ Queue-Busting System
POS System Considerations
Here are some important points to consider with regard to the POS system the PreScan system
is to be connected with. For comprehensive coverage of this topic, see the PreScan Integration
Guide.
Scanner Control Cashier Prompts. In order for the PreScan system to function properly, it is
critical that the POS system has the capability to disable the scanner at cashier prompts,
including:
• Age verification (DVD, Alcohol etc)
• Item Not On File
• Other restricted items
When the scanner has been disabled in this manner, transmission of data from its memory is
paused until the cashier attends to any security prompts, preventing accidental transmission of
items which might not be recorded by the POS. Contact your POS system provider with any
doubts or concerns about this capability.
Item Look-up Response Time. The time delay between sending each bar code is dependent
upon the time the POS takes to respond to an item and, if required, return a prompt. This time
delay will need to be set to the maximum required for this action to complete, since a
subsequent item sent too soon could be lost. Determine the optimal time period for the delay by
testing a full range of item types (normal, sale price, price-embedded, etc.) and all possible
cashier prompts.
The necessary delay can vary depending on the software, processor, size and method of item file
look-up.
Not On File.
Not On File items are not managed by PreScan. Any items not included in the
POS database must be managed manually.
There are two established methods for handling an item which is “not on file” at the POS,
although this process should be defined by the customer’s particular business practices. It will be
useful to learn the scope of “not on file” events and the types of product that fall into this
category for the given installation. It is recommended that these events be considered in advance
and users trained on approved handling procedures.
EAS tagged and Produce Items. At present, the PreScan system has no accommodation for
weighing produce or deactivation of EAS-tagged items. These items will need to remain
unbagged so they can be handled by the cashier in the normal manner, or they can be manually
deactivated using the integrated EAS deactivation capability that is available on many Magellan
scanners.
Typical response time for a current system is less than 200ms. For best
results, THOROUGHLY test to ensure the configured time optimizes sys-
tem speed, but without any loss of data.
The POS software must stop the Magellan by means of flow control such
as OPOS or JPOS when a prompt appears on the screen for age verifica-
tion, “not on file,” etc. in order to control the flow of data from the Pre
-
Scan. If this is not implemented, data could be lost.