6 - 4 MT2070/MT2090 User Guide

Imaging Preferences
The parameters in this chapter control image capture characteristics. Image capture occurs in all modes of
operation, including decode and snapshot.

Operational Modes

The device has two modes of operation:
•
Decode Mode
•
Snapshot Mode.
Decode Mode
By default, when you pull the trigger the device attempts to locate and decode enabled bar code s within its field of
view. The device remains in this mode until it decodes a bar code or you release the trigge r.
Snapshot Mode
Use Snapshot Mode to capture a high-quality image and transmit it to the host. W hile in this mode the device blinks
the green LED at 1-second intervals to indicate it is not in standard operating ( decode) mode.
In Snapshot Mode, the device turns on its laser aiming pattern to highlight the area to ca pture in the image. The
next trigger pull instructs the device to capture a high quality image and trans mit it to the host. A short time may
pass (less than 2 seconds) between when the trigger is pulled and the image is ca ptured as the device adjusts to
the lighting conditions. Hold the device steady until the image is captu red, denoted by a single beep.
If you do not press the trigger within the Snapshot Mode Timeout period, the device returns to De code Mode. Use
Snapshot Mode Timeout on page 6-6 to adjust this timeout period. The default timeout period i s 30 seconds.
To disable the laser aiming pattern during Snapshot Mode, see Snapshot Aiming Pattern on page 6-6.
IMPORTANT Before scanning Snapshot Mode, scan the Symbol Native API (SNAPI) with Imaging Interface on
page 9-6. The SNAPI with Imaging USB interface supports picture taking. Non-imaging USB
interfaces are invalid in snapshot mode.
NOTE Refer to the Motorola EMDK for the Snapshot Mode API.