Metrohm 757 VA Computrace - Manual (Page 146)

7 How to ...?
757 VA Computrace – Software
136
7. Set pretreatment parameters for electrodes (see Pretreatment,
section 3.4).
8. Set
Sweep
parameters of the selected VA measurement mode
(see VA measurement modes, section 3.2).
9. If desired, set Stand-by potential to be applied after measure-
ment (see Stand-by potential, section 3.4).
10. If the recorded signal file should be automatically saved at the
end of the measurement, click on MAIN WINDOW / Settings /
General settings and enable the Auto save determination and sig-
nal option in the General tab.
11. Start the measurement by clicking the icon or the
button (see Performing measurements, section 4.2).
Evaluate signal peaks automatically
1. Select the desired signal file in the Signal field of the EX-
PLORATORY SPECIFICATION window. The selected signal
curve is shown with the Selected signal properties .
2. Click on EXPLORATORY SPECIFICATION / Signal / Peak search .
The PEAK SEARCH window is opened.
3. Set the parameters Reverse peak , Reverse sweep (for CV only),
Minimum peak width , Smooth factor , Minimum peak height , and
Scope for peak evaluation (see Peak search, section 4.2).
4. Click the button. The calculated baselines and
peak maximum positions are displayed in the EXPLORATORY
CURVES window. The evaluation results are displayed in the
table of results in the EXPLORATORY SPECIFICATION window.
5. If no peaks are found, try to modify the peak search parame-
ters Minimum peak width , Smooth factor , and Minimum peak
height for the automatic signal peak evaluation or switch to
the manual signal peak evaluation.
Evaluate signal peaks manually
1. Select the desired signal file in the Signal field of the EX-
PLORATORY SPECIFICATION window. The selected signal
curve is shown with the Selected signal properties .
2. Click on EXPLORATORY SPECIFICATION / Signal / Peak search .
The PEAK SEARCH window is opened.
3. Check the
Manual
option.
4. Set the parameters Reverse peak , Reverse sweep (for CV only),
Minimum peak width , Smooth factor , and Minimum peak height
for peak evaluation (see Peak search, section 4.2).