Hand Held Products 7200/UG - Manual (Page 84)

C H A P T E R 6 D O L P H I N 7 2 0 0 2 D H A N D H E L D C O M P U T E R
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Capturing Images
The image-capture process is a split-second operation for experienced users. By
following the basic guidelines, new users can easily develop their own technique and,
with practice, quickly learn to adapt it to different circumstances. The basic steps for
acquiring images using the Dolphin 7200 2D terminal are:
1.
To aim, hold the Dolphin terminal horizontally at a 45° angle approximately 2 to 9
inches (5 to 20 cm) away from the target. You may have to adjust the angle at
which you hold the Dolphin if there is glare on the screen.
2.
Press the ON/SCAN button to take an image. Use the live video image on the
terminal screen as a guide for positioning and aiming the terminal at the target.
You may find it helpful to start by moving the terminal further away and then in
closer to the target. The active screen image will have a slightly degraded
appearance compared to the captured image. This is normal.
3.
Release the ON/SCAN button to capture the image when the desired image is
displayed on the terminal screen. Hold the Dolphin terminal as still as possible
when capturing the image.
The image quality and related file size is determined by the data compression method
used by your software application. For highest quality, take grayscale images. When
saved, the image will be saved in JPEG file format. The size of the file depends on the
information content of the image and will be approximately 4-8 K.
Lighting Conditions
The Dolphin 7200 2D terminal is designed to read bar codes and take images in dim
light conditions. It is suggested that you turn on the unit’s electroluminescent display
backlight when taking images in extreme low light conditions to help with aiming.