Detection Mode; Illumination And Aiming; Reading Led Illumination - Opticon MDI-4000 Series Serial Interface Manual

MDI-4000 Series Serial Interface Manual
8.3.6

Detection Mode

Lets you determine which mode to use to detect a barcode.
•
Green aiming detection: A barcode is detected when it falls within the green aiming light.
Use this mode to scan barcodes indoors. In brighter environments, the scan engine may
have difficulty detecting barcodes using this mode.
•
Warm white illumination detection: A barcode is detected when it falls within the range of
the warm white light. Use this mode to scan barcodes in dark environments.
•
No illumination detection: A barcode is detected without any illumination from the scan
engine. This mode uses the least amount of power, but the effectiveness to detect
barcodes may also be reduced. Use this mode to scan barcodes in well-lit areas.
Detection Mode Commands
Command
[DDG
[DDH
[DDI

8.4 Illumination and Aiming

You can enable or disable warm white illumination and green LED aiming.
8.4.1

Reading LED Illumination

You can enable or disable LED illumination, select an illumination method, and set illumination
brightness. Configuring these settings can be helpful to reduce specular reflection and increase
barcode scanning performance.
LED Illumination Mode Commands
Command Description
[D39 Enable: Improves reading performance, in general.
[D3A Disable: Improves reading performance for barcodes displayed on LCD
screens.
[D3B Automatic switching: Alternates the floodlight between ON and OFF. The
scan engine memorizes the illumination in which a barcode was read
successfully and uses this mode to scan the next barcode. Use this mode
in environments where specular reflection is likely to occur.
[D3Q Prevent specular reflection: Disables illumination only when specular
reflection occurs.
LED Illumination Brightness Commands
Command Description
[DDB Standard brightness
[DDC Low brightness
96
Description
Green aiming detection
Warm white illumination detection
No illumination detection
Default
✓
Default
✓
Default
✓