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Menu Command: Import

Menu Command: Import

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Menu Command: Import

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This command opens a Windows File dialog box. The current curve(s) involved in the selected ASCII-file(s) will be merged to the existing ones when setting the Option: Import Data in the Property-Window correspondingly. Otherwise, all simulation objects will be removed from the active document before importing the selected file(s).


<%EXTOGGLE%>Import DigiElch use-File

Full use-format

the full use-format contains the current curve and a full description of the experimental parameters. The latter must be written to the file in exactly the same form as on the Property Page: Simulation Parameters:


experimental parameters:

key_word_1: Value_1

key_word_2: Value_2



filter settings:

fmin_1: fmin_value_1  ,  fmax_1: fmax_value_1

fmin_2: fmin_value_2  ,  fmax_2: fmax_value_2

fmin_3: fmin_value_3  ,  fmax_3: fmax_value_3

fmin_4: fmin_value_4  ,  fmax_4: fmax_value_4

fmin_5: fmin_value_5  ,  fmax_5: fmax_value_5  

fmin_6: fmin_value_6  ,  fmax_6: fmax_value_6

fmin_7: fmin_value_7  ,  fmax_7: fmax_value_7


species parameters:

[name of species_1] (M/l): Canal_1

[name of species_2] (M/l): Canal_2



experimental FT-data:

number of S (V), E (V), I (A) triples: N

S_1, E_1 , I_1

S_2, E_2 , I_2



S_N, E_N , I_N

source program: DigiElch for Windows
program version: 3.0
file type: FT

key_word_i and Value_i
key word and value referring to the i-th parameter. The value must be in point-format and separated from the key word by a colon. The keywords and parameter values are identical to those shown on the Property Page: Simulation Parameters. For example,
experimental parameters:

Pre-Equilibrium: enabled

Diffusion: Semi-Infinite 1D

Geometry: Spherical (Hg)

Mass (mg): 4.95

Ru (Ohm): 0

Cdl (F): 0

Temp. (K): 298.2

C1 (F/V): 0

C2 (F/V²): 0

C3 (F/V³): 0

C4 (F/V²V²): 0

dEac (V): 0.03

f (Hz): 71.4286

AC-Cycles): 100

Phase Angle: 0

dEdc (V): 8.54492e-005

log2(Data Points): 14

simulated background correction (1 = true, 0 = false): 0

Estart (V):-0.7

Segment: 1

Eend (V): -1.4

v (V/s): 1

Segment: 2

Eend (V): -0.7

v (V/s): 1

name of species_i and Canal_i
the name of the i-th species in brackets and the analytical concentration in point-format. For example
[NiL] (M/l): 0.001
[NiL-] (M/l): 0
[DP] (M/l): 0.1
[NiLDP] (M/l): 0
[NiLDP-] (M/l): 0

fmin_value_i,  fmax_value_i
i=1: fmin_value_1 = fmax_value_1 = factor in DC LP
i=2: fmin_value_2 = fmax_value_2 = factor in AC HP
i=3: fmin-factor and fmax-factor in Fundamental Harmonic BP
i=4: fmin-factor and fmax-factor in Second Harmonic BP
i=5: fmin-factor and fmax-factor in Third Harmonic BP
i=6: fmin-factor and fmax-factor in Fourth Harmonic BP
i=7: fmin-factor and fmax-factor in User Definedc BP

the number of data couples

S_i, E_i and I_i
numbers (separated by comma) representing the i-th Signal-Voltage-Current-triple
S: applied signal (AC + DC component)
E: DC component only
I: total FT-CV current (DC+AC components)


Minimum use-format

Data measured with third-party electrochemical instruments are usually exported in file formats which differ from instrument to instrument. The minimum use-format enables the user to produce an importable use-file with a minimum of effort provided the experimental data files satisfy the following prerequisites:

The experimental current curve is available in ASCII-format.

The current points refer to equal time steps. Only small deviations from equally spaced time intervals do not matter.


The minimum use-format is as follows:


number of E (V), I1 (A) | I2 (A) couples : N

E1_1 , I1_1

E2_1 , I2_1

E1_2 , I1_2

E2_2 , I2_2



E1_N , I1_N

E2_N , I2_N


E1_i and I1_i
numbers  (separated by comma) representing the Voltage-Current-couple associated with the i-th forward step (see above picture) .

E2_i and I2_i
numbers  (separated by comma) representing the Voltage-Current-couple associated with the i-th backward step(see above picture) .


tipbulbFiles in minimum use-format do not contain any information about experimental parameters such as scan rate, electrode surface, electrode geometry or species concentrations. It is therefore not possible for the fitting procedure to recognize to which parameter combination a particular experimental curve refers. Consequently, such files are useful only for viewing experimental current curves. Apply the Edit/Modify command  to add the experimental parameters to each file.