Metrohm viva 1.0 (process analysis) - Manual (Page 420)

5.5 Method run subwindow
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viva 1.0 (for Process analysis)
1st vertex potential
First inflection point for the sweep.
Condition:1st vertex potential ≠ Start potential
Input range -5.000 - 5.000 V (Increment: 0.001)
Default value -0.175 V
2nd vertex potential
Second inflection point for the sweep.
Condition 1: 2nd vertex potential ≠ 1st vertex potential
Condition 2 (for anodic sweeps): 1st vertex potential > Start poten-
tial
≥ 2nd vertex potential
Condition 2 (for cathodic sweeps): 1st vertex potential < Start poten-
tial
≤ 2nd vertex potential
Input range -5.000 - 5.000 V (Increment: 0.001)
Default value 1.625 V
Potential step
Potential step for the DC potential ramp.
Condition 1: Potential step ≤ (|2nd vertex potential − 1st vertex
potential |) / n
min
n
min
(minimum number of measuring points for the evaluation) depends
on the Potential step itself as follows:
￭ Potential step ≥ 0.0095 V: n
min
= 16
￭ Potential step < 0.0095 V and ≥ 0.0075 V: n
min
= 20
￭ Potential step < 0.0075 V and ≥ 0.0055 V: n
min
= 24
￭ Potential step < 0.0055 V and ≥ 0.0035 V: n
min
= 32
￭ Potential step < 0.035 V : n
min
= 52
Condition 2: Potential step ≥ (|2nd vertex potential − 1st vertex
potential |) / 65,535
Input range 0.00015 - 5.00000 V (Increment: 0.00001)
Default value 0.006 V
Potential step time
Shows the time that has to expire before the potential is changed by the
amount of Potential step.
Calculation: Potential step / Sweep rate
Sweep rate
Potential sweep rate for the sweep.