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12. Trigger and Read Options
12.1. Trigger Switch
The trigger switch of the NLB-1000 and the RLB-1000 is on the back side of the scanner.
It is written "SCAN" on the switch as shown in the figure below. You can start the scanning
operation by pressing this switch as far as the read options of the scanner is not configured
otherwise. (In the default settings, manual scanning is enabled.)
12.2. Trigger Mode
Disabled
Enabled
The trigger signal can be initiated in the following ways:
Manual mode
Serial mode
Hardware mode
12.3. Read Mode
Single read mode:
When a symbol has been decoded, the reader will be turned off. The reader must be
triggered again to read another symbol.
Multiple read mode:
When a symbol has been decoded, the reader will stay on for a time (set by 'Read time
options') or indefinitely, if the trigger switch has been disabled. The same symbol can only
be decoded again after the symbol has not been detected for a set number of scans
(multiple read reset time).
Continuous read mode:
The reader will produce as much data as it can decode even if it is reading the same
symbol. This mode is mainly used for demonstration and diagnosis.
Figure 21: Trigger Switch
When this option is selected, the reader will stay on all the time.
After receiving a trigger signal, the bar code reader will turn on
and the read cycle starts. The reader will stay on for a time as set
in 'Read time options'.
When the trigger key is pressed, the read cycle starts.
The read cycle starts at the time set in 'Read time options' after a
serial command (<ESC>Z<CR>) is received.
For no RS232C connector specification, the read cycle starts at
the time set in 'Read time options' after an electrical pulse (low).
29
NLB / RLB-1000
Specifications Manual
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