6 - 2 3800g/3800gHD/3800gPDF User’s Guide
RS-232 programmable selections are used by both the primary and secondary 
interfaces.  Changing an RS-232 parameter (e.g., baud rate or parity), while in 
primary 
or
 secondary mode will affect both interfaces.  If you want to change the 
RS-232 settings, refer to the Connecting the Imager with RS-232 Serial Port 
section on page 1-6.
Secondary Trigger Mode
Manual Trigger:
You must press the imager trigger to scan.  When not scan-
ning, idle power is maintained. 
 Default = Manual Trigger
.
Automatic Trigger:
The imager scans continuously at full power.
Presentation Mode:
The LEDs are off until a bar code is presented to the 
imager.  Then the LEDs turn on automatically to read the code.  Presentation 
Mode uses ambient light to detect the bar codes.
Hands Free Time-Out
The Automatic Trigger and Presentation Modes are referred to as “hands free” 
modes.  If the imager’s trigger is pulled when using a hands free mode, the 
imager changes to manual trigger mode.  You can set the time the imager 
should remain in manual trigger mode by setting the Hands Free Time-Out.  
Once the time-out value is reached, (if there have been no further trigger pulls) 
the imager reverts to the original hands free mode.
Note: If you change the time-out duration for the secondary interface, the 
duration of the primary interface will also be changed.