Hand Held Products 3900 - Manual (Page 48)

3 - 6 3800/3900 User’s Guide
Presentation Mode: The LEDs are off until a bar code is presented to the
scanner. Then the LEDs turn on automatically to read the code. Presentation
Mode uses normal office or store ambient light to detect the bar codes.
Note: Do not use Presentation Mode with a 3800/3900PDF. Normal office or
store ambient light does not provide enough illumination for the 3800/
3900PDF to work properly in Presentation Mode.
Presentation Mode