Cognitive Solutions A776 Manual De Usuario

A776 (B780) Programming Guide 

A776-PG00001 C 12/09

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

Hexadecimal: ID B0 

Parameters: None

Return: 1D 49 B0  s m n pL pH rL rH 

1D

Command return indicator

49

Image Scanner

B0

Imaging function = calibrate

s

Standard imaging status
Decimal

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.