1
I
NTRODUCTION
Honeywell’s IS4125 ScanQuest
®
Engines are compact laser bar code scanners
designed to be integrated with OEM devices. The ScanQuest series provides
fast, accurate, reliable scanning in a compact, lightweight package.
The IS4125 has built-in decoding for versatile OEM operations. The IS4125 has
flash upgradeable firmware. The IS4110 non-decode engine is also available to
be integrated with decode equipped OEM devices.
Note: The manufacturer of the end equipment must register with agencies
such as the Food and Drug Administration (FDA). The specifications
required for registration are not obtainable until the OEM manufacturer
uses the ScanQuest Engine in its final configuration. Therefore, it
becomes the responsibility of the manufacturer who incorporates the
scan engine into their product to comply with all federal laser safety
regulations. The manufacturer must submit a Laser Product Report for
the FDA in the US or similar forms as required by other countries.
Honeywell will assist its customers in complying with the necessary
procedures.
Theory of Operation
An object detection device is located behind the scanner window initiates the
scanning process. The detection device is active as long as the unit is being
powered. When the laser decodes a bar code, the scan engine transmits the
data to the host system.
If the same bar code stays in the field after successfully scanning
, the laser stays
on for approximately four seconds and then turns off. This prevents unintentional
reads of the same bar code. To read the same symbol more than once, remove
the object from the scan field for approximately one second and then present the
symbol again.
If the bar code and object is removed
from the field during the scanning process,
the laser turns off. In this stage, the scan engine’s computer remains on
“standby”.
However,
if the object stays in the field
, the laser remains on for up to
2.5 seconds trying to detect the bar code. To reactivate the scanning sequence,
remove the object.
The RS232 interface unit can be activated to scan by a command from the host.
When the unit is configured this way, the object detection is disabled
automatically.
