Metrohm 746 VA Trace Analyzer - Manual (Page 289)

5.6 Method Specifications
746 VA Trace Analyzer / 747 VA Stand
5-138
Parameter Range; Default value / Meaning
AC2 abs. Linear baseline with absolute evaluation with AC2MODE :
Curves recorded with AC2MODE are always evaluated
with a linear baseline. The base points
dU.front and
dU.rear can be determined automatically or entered
manually, the slopes S.front and S.rear have no
meaning here.
In the absolute evaluation, the total peak height
I.abs is
determined and put out as the result.
In place of
AC2 abs. , linear can be entered under
Type .
I.abs
U / 2
AC2 abs.
dU.front dU.rear
Scope whole, f.half, r.half, f.double, r.double; whole
Baseline range
The following possibilities exist to define the range over which the
baseline should be calculated:
whole Calculation of the baseline for the whole curve.
whole
f.half Calculation of the baseline starting from peak front half
(possible only with
Type = linear ).
r.half Calculation of the baseline starting from peak rear half
(possible only with
Type = linear ).
With f.half and r.half is recommended to set
S.front and S.rear from auto to 0.000 (zero).
linear, f.half linear, r.half
f.double Calculation of the baseline for the first peak of a double
peak (possible only with
Type = linear , Type =
polynom and Type = expon. ). The second peak must be
evaluated with the same Type .
r.double Calculation of the baseline for the second peak of a
double peak (possible only with
Type = linear , Type =
polynom and Type = expon. ). The first peak must be
evaluated with the same Type .