CipherLab 1562 Guide de l'utilisateur télécharger pdf (Page 43)

Chapter 1

Changing Scanner Settings

This is used to control the illumination banks on the scan engine. Options are –

 Full: Enables the full illumination system.

 Auto: Switches the illumination from left to right bank.

 Left: Enables the left bank, which is on the left when facing the scan window.

 Right: Enables the right bank, which is on the right when facing the scan window.

Note: When the ambient light is too dim on the left (or right), you may enable the left

(or right) illumination bank to add lighting.

Image Capture Illumination

Decide whether to cause the decoder to flash illumination on every image capture to aid decoding.

 Enabling illumination usually results in superior images. The effectiveness of the illumination

decreases as the distance to the target increases.

Image Capture Autoexposure

Decide whether to manually specify the gain and exposure time (only recommended for advanced

users with difficult image capture situations). By default, exposure value is set to 10 ms and gain

value is set to 50 when autoexposure is disabled.

Bits per Pixel

Select the number of significant bits per pixel (BPP) to use when capturing an image. Select 1 BPP

for a black and white image, 4 BPP to assign 1 of 16 levels of grey to each pixel, or 8 BPP to

assign 1 of 256 levels of grey to each pixel. By default, it is set to 8 BPP. The decoder ignores

these settings for JPEG files, which always use 8 BPP.

Resolution

This feature alters image resolution before compression. Multiple pixels are combined to one pixel,

resulting in a smaller image containing the original content with reduced resolution.

Options for 1704:

 Full: 1280 x 1024 (uncropped image size)

 1/2: 640 x 512 (uncropped image size)

 1/4: 320 x 160 (uncropped image size)

Enhancement

This feature uses a combination of edge sharpening and contrast enhancement to produce an

image that is visually pleasing.

File Format

Select an image format for storing captured images. By default, it is set to JPEG.

Brightness (Target White)

Decide whether to set the Target White value (1~240) when using autoexposure. White and black

are defined as 255 decimal and 0, respectively. If the value is 180, which is the factory default,

the white level of the image is ~180.

Aiming Pattern

Decide whether to allow the decoder to project the aiming pattern in Image Mode.

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CipherLab 1562 Guide de l'utilisateur Page 43