Motorola SE4750 Integration Manual page 73

Auto-AIM Mode Procedure
The system is initialized as follows:
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The host sends the Illumination Off command.
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The host sends the Aim On command.
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The host sends the Motion Detect mode command.
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The host sends the Acquisition Start command (and never sends the Stop command).
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The host sends the Aim Off command.
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The SE4750 optimizes the image output for motion detection.
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The SE4750 continuously outputs images
Upon the host detecting motion:
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The host sends the Barcode Decode mode command.
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The host sends the Aim On command.
Upon a trigger pull:
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The host sends the Illumination On command.
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The SE4750 optimizes the image output for bar code decoding.
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The host attempts to decode the images.
Upon a good decode or trigger release:
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The host sends the Aim Off command.
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The host sends the Illumination Off command.
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The host sends the Motion Detect mode command.
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The SE4750 optimizes the image output for motion detection.
During this mode:
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The SE4750 does not automatically enter low power mode.
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The host uses the Power Mode command to put the SE4750 into a low power mode (for support of Bus
Powered USB).
Application Notes 6 - 7