Specifications

20
Power Mode Descriptions
Boot Mode
The engine is booting up.
PWRDWN Pin State: Asserted (HIGH).
All bar code scanning by:
Trigger: Not Working
Remote Activation USB: Not Working
Remote Activation TTL: Not Working
Responsiveness: Not Working
Serial Program Mode: Not Working
Transition to Boot Mode:
• The TTL RS232 engine is turned to Boot Mode from Power Down Mode when the power is applied
AND upon reception of the nTrig or nWake signals.
• The USB engine enters Boot Mode upon completion of USB enumeration.
• The engine can turn itself to Boot Mode from Operating Mode or Idle Mode upon some internal event,
such as at the end of the software upgrade procedure.
At the end of the boot-up cycle the engine turns to the Idle Mode and de-asserts the PWRDWN pin.
Operating Mode
The engine is acquiring and processing images or running other tasks.
PWRDWN Pin State: De-asserted (LOW).
All bar code scanning by:
Trigger: Not Working
Remote Activation USB: Not Working
Remote Activation TTL: Not Working
Responsiveness: Not Working
Serial Program Mode: Not Working
Transition to Operating Mode:
• The engine is turned to Operating Mode from Idle, Sleep, or Presentation Wakeup Modes upon the
reception of the nTrig signal.
• The engine can be turned to Operating Mode from Idle Mode (or Sleep Mode in USB version) upon the
reception of a special single-byte serial command from the host. The byte value is configurable.
• The engine is turned to Operating Mode from the Presentation Wakeup Mode upon the object detection
event.