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Programming the Scanner
3-27
Trigger Modes
This section allows the user to select the trigger mode that is
different from the Trigger Mode default. The operations of
each trigger mode are described as below.
Low Power Mode
When this operation mode is selected, the scanner goes into idle state after
scanning the bar code. You must press the trigger to wake up the scanner for
operation. While the scanner is in the idle state, there is only maximum 500uA
standby current for the entire reading device. It is very helpful for mobile data
collection and application, which are concerned with power savings, but
please keep a minimum of 120 milliseconds debounce time to stabilize the
power transition.
Manual Trigger Mode
When this operation mode is selected, you must press the trigger to turn on
the light source of the scanner before scanning the bar code. If you do not
press the trigger, the light source will be turned off immediately. Please note
that the scanner maintains standby current. You can adjust the debounce time
to obtain faster triggering reading.
Level Mode (Auto Power Off)
When this operation mode is selected, the scanner continues to turn on the
light source of the scanner before a good read or pre-defined auto power off
duration. If the scanner decodes a bar code successfully, it turns off the light
source immediately. After the scanner turns off the light source, you must
press the trigger to turn on the light source again. If there is no scanning
operation performed during the pre-defined auto power off time, the scanner
enters the idle state after the pre-defined auto power off duration.
Alternative Mode
When this operation mode is selected, the scanner keeps the light source of
the scanner turned on and disables the infrared sensor before the pre-defined
auto power off duration. Because you do not have to press the trigger
frequently, it is very convenient for multiple scanning. After each good read,
the auto power off timer counter is reset. After the scanner turns off the light
source, you must press the trigger to turn on the light source again. If there is
no scanning operation in pre-defined auto power off duration, the scanner
turns off the light source and enables the infrared sensor after the pre-defined
auto power off duration
Presentation Mode
When this operation mode is selected, the scanner flashes the light source of
the scanner without using the trigger. If the scanner detects an image similar
to a bar code, the scanner forces on the light source automatically and scans.
If the scanner cannot detect a bar code, it resets the light source immediately
to blinking. Adjusting the Pulse Driven Duty Cycle can change the frequency
of the blinking.
Auto Trigger Mode (Continued Power On)
When this operation mode is selected, the light source of the scanner is
forced on for continued operation without pressing the trigger switch. This
mode is convenient for high speed bar code reading.
Toggle Mode (Repeat Reading)
The toggle mode is very similar to the Alternative Mode without the
pre-defined auto power off duration concern. When this operation mode is
selected, you must press the trigger to turn on the light source of the scanner.
The scanner keeps the light source turned on until you press the trigger again.