MagTek Excella STX99875340 - Manual (Page 75)

Section 5. Keys Sent to Device
65
JPEGQC
This key can be used to set the JPEG compression quality number for color images. The default value for
this key is 50. Changing the default value of this key affects the image quality and size of a JPEG file. For
higher quality images, set the value of this key to a higher number. The file size also increases when the
quality number increases. The valid range for this key is 1-100. This key is supported by Excella and
Excella STX.
Values Value Description
numeric string Quality number for color image
JPEGQG
This key can be used to set the JPEG compression quality number for grayscale images. The default value
for this key is 50. Changing the default value of this key affects the image quality and size of a JPEG file.
For higher quality images, set the value of this key to a higher number. The file size also increases when
the quality number increases. The valid range for this key is 1-100. This key is supported by Excella and
Excella STX.
Values Value Description
numeric string Quality number for grayscale images
CalculateSHA1
This key determines if SHA1 calculation is required for captured images. This key is supported by
Excella and Excella STX.
Values Value Description
YES SHA1 calculation is required
NO SHA1 calculation is NOT required
ScanLED1, ScanLED2
These keys select the illumination color used to scan the front (ScanLED1) and back (ScanLED2) of the
check. The default illumination color is white and it provides the best image quality results. Other colors,
such as Red, may be used to drop out a specific target color on specially designed checks. These keys are
supported on Excella only (Firmware version 1.80J or above). The values for the available illumination
colors are listed in the table below:
Table 5-1. Values for Scan Bar Illumination Colors
Value Value Description
1 Green
2 Red
3 Green+Red
4 Blue
5 Blue+Green
6 Blue+Red
7 White