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Chapter 5: Programming commands132
A776 (B780) Programming Guide A776-PG00001 C 12/09
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 Denition
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 o; 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 t in image buer 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 oce 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.