Metrologic Instruments MS2421 - Manual (Page 40)

36
S CANNER O PERATION
S TARTUP
When the scanner first receives power, the blue LED will turn on and the scanner will beep once. The scanner is now ready to
scan.
P OWER -U P T EST M ODE
When a MS2421/MS2422 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.
C ONFIGURATION M ODE
All MS2421/MS2422 bar code 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 ( MLPN 00-02407 x), the MS2xxx Stratos
Series Configuration Addendum ( MLPN 00-02034 x) and MetroSet.
For a complete list of the factory default settings, refer to the Default Settings section of this guide.