LD25x
9 Special functions
9.1 Linearisation
This function allows a non-linear input signal to be converted into a linear
representation or vice versa. 16 interpolation points are available, they can be
freely arranged over the whole measuring range at any distance. Between two
points the unit will interpolate automatically straight lines.
It is advisable to set several points into areas with strong bending and to use
only a few points in areas with little bending. “
Linearisation Mode
“ has to be
set to either
1-quA
or
4-quA
(see
LinEAr
item in section “7.1 Basic settings”)
to enable the linearisation function (see subsequent drawing).
Parameters
P01_x
to
P16_x
select 16 x- coordinates, representing the display
values which the unit would normally show in the display. With parameters
P01_
y
to
P16_
y
you can specify which values you would like to display
instead of the corresponding _x values.
This means e.g. that the unit will replace the previous
P02_x
value by the new
P02_
y
value.
NOTE
•
With respect to the consistency of the linearisation, the x- registers have
to use continuously increasing values, e.g. the x- registers must conform
to the constraint
P01_x
<
P02_x
< … <
P15_x
<
P16_x
.
•
Independently of the selected linearisation mode, the possible setting
range of all registers
P01_x
,
P01_
y
,…,
P16_x
,
P16_
y
is always
-199999 … 999999.
•
With measuring values lower than
P01_x
the display will always show
P01_
y
.
•
With measuring values higher than
P16_x
, the display will always show
P16_
y
.
x
y
P1(x)= 0
P1(y)= 0
Linearization Mode = 1_quA
x
y
Linearization Mode = 4_quA
P1(x)= -1000
P1(y)= 900
P8(x)= 0
P8(y)= 750
P16(x)= +1000
P16(y)= - 600
* )
P16(x)= 1000
P16(y)= 800
* Mirror of positive range
MAN LD25x E 1.0.odt
Special functions
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