Cognitive Solutions B780 Imaging Commands, Calibrate Scanner, Hexadecimal ID B0 Parameters None

132 Chapter 5: Programming commands

Imaging Commands

In these descriptions, the commands and parameters are given in hexadecimal unless otherwise noted.

Calibrate Scanner

Hexadecimal: ID B0

Parameters: None

Return: 1D 49 B0 s m n pL pH rL rH

Value	Definition
1D	Command return indicator
49	Image Scanner
B0	Imaging function = calibrate
s	Standard imaging status
	Decimal	Meaning
	0	OK
	1	Jam detected
	2	Wait for scan document cancelled
	3	Imager cover open
	7	Unrecoverable hardware error
	8	No stored document
	9	Bottom side only
	10	Top side only
	11	Internal interface timeout error
	12	Internal interface other error
	16	No bottom image
	17	No top image
	18	Unsupported format
	19	Tag block full
m	Active Scanning command entry points: 0 = no outstanding scan; 1 = slip entry; 2= top entry; 3 =
	waiting at both
n	Sensors currently covered / closed: none = all bits off; bit0 = imager rear detect; bit1 = imager front
	detect; bit 2 = imager cover; bit 3 = cassette cover; bit5= upper slip detect; bit6= lower slip detect
pLpH	The File Index to be used by the next scan
rLrH	Remaining space count of typical document scans to fit in image buffer free space

Description: This adjustment will be done originally at kit or factory install and should be done any time after cleaning both the top and bottom scan windows. Using the top entry point, a bright white document (new office paper, not recycled) is inserted, allowing the scanner to set the LED illumination current and individual range compensation

for each pixel. These values will be used to get full-range readings on subsequent scans. A standard imager status structure is returned, with the Status byte indicating if all the imager hardware is OK or if the test document has jammed.

A776 (B780) Programming Guide A776-PG00001 C 12/09