Theory & Operation; Scanner Operation - Metrologic MS2020 Stratos series Service Manual

THEORY & OPERATION

SCANNER OPERATION

Startup
When the scanner first receives power the white LED will flash, the blue LED will turn on and
the scanner will beep once (the white LED will remain on for the duration of the beep). The
scanner is now ready to scan.
Power-Up Test Mode
When a Stratos scanner is first powered up, it cycles through a number of self-tests before
starting normal operation. If there are any initial failures during this sequence of tests the
scanner will beep or razz to indicate the error and an error code will appear in the diagnostic
indicator display.
The following are examples of the types of tests performed at power-up.
1. Memory tests
2. Hardware setup tests
3. Motor tests
4. Laser tests
5. Configuration tests
6. Interface tests
These tests are also performed on a periodic basis with the operator alerted to any failures.
Programming Mode
All MS2020 series scanners have been configured at the factory with a set of default
communication protocols. Since many host systems have unique formats and protocol
requirements, Metrologic provides a wide range of configurable features that may be selected
®
with the use of the MetroSelect Configuration Guide ( 00-02407) or MetroSet.
MLPN
For a complete list of the factory default settings, refer to the Default Settings section of the
™
MS2020 Stratos Series Installation and User's Guide.
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©2004 Metrologic Instruments, Inc. All rights reserved MS2020 Stratos Service Manual