Metrohm 797 VA Computrace - Manual (Page 190)

6 Electroplating Bath VA
797 VA Computrace – Software
178
this case, var is entered into the field instead of a
fixed value. This field only appears once for soluti-
ons with the same number (mixed standards) and
it is not displayed if
0 is entered as solution num-
ber.
Regression technique [ see below ; Linear Regression ]
Selection of regression technique:
Linear Regression
The regression is calculated with a straight line.
Nonlinear Regression
The regression is calculated with a nonlinear
curve.
Linear Interpolation
The regression is calculated with a linear interpola-
tion through 2 points.
Quadratic Regression
The regression is calculated with a nonlinear
curve.
Peak evaluation [ Height, Area, Derivative, Coulometric ; Coulomet-
ric ]
Selection of peak evaluation quantity:
Height
Peak height from baseline to peak maximum.
Area
Peak area between peak curve and calculated ba-
seline.
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) (s
ee Smoothing and differ-
entiation , section 5.8 ).
Eliminate spikes
Eliminates spikes to smooth the signal.
Reverse sweep [ on, off ; off ]
Enable peak evaluation of the reverse sweep of
cyclic sweeps (not available with CPVS).
Endpoint and evaluation criteria:
Addition ratio Q/Q(0) [ 0…1 ; 0.3]
The „Addition ratio“ defines the endpoint criteri-
on. After reaching this point, the standard additi-