10 Advanced Parameters and Commands
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and
B
are loaded into the correction data memory as mentioned above. For an optimum image quality
one should take into consideration that the parameters
A
and
B
shall always specify
a pair of two
mating reference images
, even though these parameters are alterable separately. Regarding the use of
command
X=1
Example:
Loading of correction data at low reference temperature into the active correction
memory page of file number 0x20.
>
A=20[CR]
The set values for both reference images
A
und
B
are adjusted with the parameters
J
and
K
. For each
correction data set two registers are available which include the corresponding set value. One always
refers to both set values of the actual correction data set
S
.
In case that various correction sets are obtainable, the set values are factory-bunched in one file, the
number of which is indicated by the parameter
N
.
If
N
is not zero, the values for all correction sets
from this file are loaded, when switching-on the camera and stored back with
X=1
. In case that only
one correction data set is on hand,
N
can remain on the value zero, because
J
and
K
(only the values
of the actual memory page) are stored together with all other parameters of one system file apart from
the file
N
.
Please note that changes to
J
and
K
can not be stored to file
N
.
Example:
All set values of the two point correction have to be loaded from the file 0x60.
>
N=60[CR]
Generally no changes at the set values have to be executed. The factory-determined value
J
(or rather
K
) for a determined correction image, as well as the definition of the conversion of temperatures in
digital values, can be gathered from an optional calibration report.
From the registers
J
and
K
actually only the higher 12 (IRC-320) or 14 (IRC-640) bits are used. The
lower bits are reserved for prospective extensions and should always be set to zero:
Bit
position 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
2
11
2
10
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
-
-
-
-
Value
(12bit)
a 0
2
13
2
12
2
11
2
10
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
-
-
Value
(14bit)
a 0
VDS Vosskühler GmbH
IRC-320
