Allied Vision BONITO, Technical Manual

Page: 42 / 83

Bonito Technical Manual V2.4.0
42
Parameters and commands
The diagram illustrates the use of ROI parameters
A
,
B
,
I
, and
N
, from the sen-
sor’s point of view. The sensor’s first (topmost) line has the address
0
, the last
(lowermost) line has the address
6BD
.
Range
0
(=off)or
1
(=on)
Default
0
Related Parameters
A
,
B
,
D
,
N
and
I
Example
A=0
start first AOI at the first line
B=5BD
(0x5BD = 1469), starts second AOI at the 1470
th
line
D=1
enable double ROI mode
N=FF
(0xFF = 255), reads 256 lines from each ROI, 512 lines in the output
image
I=1
read every line
Result: lines no 0 to 255 and no 1469 to 1724 of each image are read.
Exposure time (E)
The exposure time is a 32-bit value. Its time resolution depends on the prescaler
value
K
. For detailed information see chapter Timer prescaler value (K) on page
46.
Technically, the value range is 32 bit, whereas the useful exposure times should
be up to approx. 1 second.
Range Useful from
1
to approx.
50000
at
K=A7
, but not limited to that maximum.
Default
6BE
(=1726)
Figure 23: Parameters relevant in double ROI mode