Honeywell MX9 User Manual page 206

Option
Aim Time
Lights
8 - 30
Action
Duration of the imager aim beam in 0.1 second increments.
Valid:0 – 50 (0 to 5 seconds)
Default:0
Specifies if the imager's lights and aimer should be left on during the entire decode process.
The default is disabled.
If disabled, the lights are turned on only during image capture, then turned off while the imager
attempts to process and decode the bar code.
If enabled, the aimer and lights remain turned on during the entire process.
In Aggressive Linear Decode mode, set this parameter to enabled to improve the aimer visibility.
See "Mode" above.