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6.3 ATR Illumination
The standard method of reading barcodes cycles the illumination on and off. This can be controlled
for various different applications using the commands below. For example, it is often beneficial to
turn off the illumination to prevent reflections from shiny surfaces, e.g. mobile phones.
Command
Description
Default
Parameters/Range
AISILL
Adaptive Illumination.
2
0 - Off Phone Only
1 - Off Paper Only
2 - On Paper Optimised
3 - On Phone Optimised
AISONT
Illumination on time - Adaptive mode on.
Applies to AISILL modes 2 and 3 only.
Each unit is equivalent to 100
milliseconds.
8
0 - 200
AISOFT
Illumination off time - Adaptive mode on.
Applies to AISILL modes 2 and 3 only.
Each unit is equivalent to 100
milliseconds.
8
0 - 200
AISONM
Illumination On Mode.
When set to ‘0’, the timing for the
illumination on periods is set to a single
value, AISONT.
When set to ‘1’, the illumination on
periods cycle continuously (while
triggered) through the three AISONx
values below.
0
0 - Normal adaptive
operation - use AISONT
above.
1 - Cycles through
AISON1 to AISON3
timings
AISON1
Illumination on Time 1 - Adaptive mode
on.
Applies to AISILL modes 2 and 3 only.
Each unit is equivalent to 100ms.
1
0 - 200
AISON2
Illumination on Time 2 - Adaptive mode
on.
Applies to AISILL modes 2 and 3 only.
Each unit is equivalent to 100
milliseconds.
2
0 - 200
AISON3
Illumination on Time 3 - Adaptive mode
on.
Applies to AISILL modes 2 and 3 only.
Each unit is equivalent to 100
milliseconds.
5
0 - 200
AISOFM
Illumination Off Mode.
When set to ‘0’, the timing for the
illumination off periods is set to a single
value, AISOFT.
When set to ‘1’, the illumination off
periods cycle continuously (while
triggered) through the three AISOFx
values below.
0
0 - Normal adaptive
operation - use AISOFT
above.
1 - Cycles through
AISOF1 to AISOF3
timings
AISOF1
Illumination off Time 1 - Adaptive mode
on.
Applies to AISILL modes 2 and 3 only.
1
0 - 200
