Laser Power - Microscan MS-3 User Manual

Scanner Setup

Laser Power

Usage: Used to optimize read performance at different distances. Typically higher
power is used at greater distances.
Definition: Allows the user or calibration routine to select laser power setting.
Serial Cmd: <K700,laser on/off status,laser framing status,laser on position,laser off
position,laser
Default: High
Medium
Options: 0 = Low
Automatic Gain Control (AGC)
AGC Sampling Mode
Usage: AGC Sampling allows you to specify how automatic gain control sam-
pling will be done.
Definition: AGC is the acronym for Automatic Gain Control. AGC increases the depth
of field by attempting to maintain signal strength at a constant level
regardless of the range of the bar code symbol.
Serial Cmd: <K504,gain
Default: Continuous
Options: 0 = Disabled
Disabled
Usage: Disabled is not recommended, but can be useful in certain applications
in which symbols do not require a large depth of field.
Definition: When AGC Sampling is set to Disabled, gain levels can only be manually
controlled by the Gain command.
Leading Edge
Usage: Leading Edge is rarely used, but in some cases can improve scan rates
when symbols are skewed and the leading edge of a symbol is difficult to
locate.
Definition: Finds the leading edge of a symbol by looking for a 40 µS quiet zone fol-
lowed by the number of transitions set in
page
accordingly at the end of the scan.
MS-3 Laser Scanner User's Manual
4-18
power>
Power (Low density scanner)
Power (High density scanner)
1 = Medium
level,AGC sampling
1 = Leading Edge
4-20, stores the highest value of the samples, and adjusts the AGC
2 = High
mode,AGC min,AGC max>
2 = Continuous
"Transition Counter" on