Metrohm 797 VA Computrace - Manual (Page 109)

5.2 Working method specifications
797 VA Computrace – Software
97
libration curve or RC Record response curve is se-
lected for Calibration .
Linear Interpolation
The regression is calculated with a linear interpola-
tion through 2 points. This option is only available
if
Record calibration curve , DT Record calibration
curve or RC Record response curve is selected for
Calibration .
Quadratic Interpolation
The regression is calculated with a nonlinear
curve. This option is only available if
Record cali-
bration curve , DT Record calibration curve , DT Sup-
pressors with Calibration Curve or RC Record re-
sponse curve is selected for Calibration .
Peak evaluation [ Height, Area, Derivative, Coulometric ; Height ]
Selection of peak evaluation quantity:
Height
Peak height from baseline to peak maximum.
Area
Peak area between peak curve and calculated
baseline.
Derivative
Difference between positive an negative maximum
of the first derivative of the voltammogram.
Coulometric
Charge transmitted during the peak.
Smooth factor [ 1...6 ; 4 ]
Smoothing power of the Savitzky/Golay smooth-
ing of the baseline (
1 = minimum smoothing, 6 =
maximum smoothing). See Smoothing and differ-
entiation, section 5.8)
Minimum peak width (V.step) [ ≥ 5 ; 5 ]
Minimum peak width for peak recognition by
number of
Voltage steps (= number of measure-
ment points).
Minimum peak height (A) [ > 1 pA ; 100 pA ]
Minimum peak height for peak recognition.
Eliminate spikes
Eliminates spikes to smooth the signal.
Reverse sweep [ on, off ; off ]
Enable peak evaluation of the reverse sweep of
cyclic sweeps (only available with CV and CVS).
Reverse peaks [ on, off ; off ]
Enable peak evaluation of reverse peaks (peaks
with opposite direction compared to the sweep or
pulse direction).