Honeywell Genesis 7580G, Руководство пользователя

Страница: 145 / 202

8 - 11
Below is an example of a signature capture application. In this example, the aimer is centered over the signature capture area
and the trigger is pressed. A single beep is emitted, indicating that the scanner has read a Code 128 bar code and the data has
been transferred to the host. An IMGBOX command may now be sent from the host to specify the coordinates of the signature
capture area below that code, and indicating that only that area containing the signature should be transferred as an image to
the host.
To see this example, align the aimer with the signature area (not with the bar code), then press the trigger.
Send the following IMGBOX command string after the button push:
Example: IMGBOX245w37h55y.
Note: Case is not important in the command string. It is used here only for clarity.
The following image is captured:
The IMGBOX commands have many different modifiers that can be used to change the size and appearance of the signature
image output by the scanner. Modifiers affect the image that is transmitted, but do not affect the image in memory. Any number
of modifiers may be appended to the IMGBOX command.
Note: The IMGBOX command will return a NAK unless a window size (width and height) are specified. See H - Height of
Signature Capture Area (page 8-12) and W - Width of Signature Capture Area (page 8-13).
IMGBOX Modifiers
A - Output Image Width
This option is used to size the image horizontally. If using this option, set the resolution (R) to zero.
Example of Image Width set to 200A:
Example of Image Width set to 600A: