Spectro Chronoamperometry Setup Parameters

Click on each of the setup parameters for a description of its use and function.

Output File

The pathname of the file in which the output data are written. It can be a simple filename with no path information, where the output file is located in the default data directory. The default data directory is specified in the Gamry.INI file under the [Framework] section with a Key named DataDir. This default pathname can be changed using the Path command under the Options menu. It can also include path information, such as C:\DATA\YOURDATA.DTA. In this example, the data are written to the YOURDATA.DTA file in the DATA directory on drive C.

The default value of the Output Filename parameter is an abbreviation of the technique name with a .DTA filename extension. We recommend that you use a .DTA filename extension for your data filenames. The data-analysis package assumes that all data files have .DTA extensions.

NOTE: The software does not automatically append the .DTA filename extension. You must add it yourself.

If the script is unable to open the file, an error message box, Unable to Open File, appears. Common causes for this type of problem include:

  • An invalid filename.
  • The file is already open under a different Windows® application.
  • The disk is full.

After you click the OK button in the error box, the script returns to the Setup box where you can enter a new filename.

When you perform spectroscopic measurements, in addition to electrochemical experiments, a second file is generated which contains only the spectrum data. This file has the prefix SpectraFor_ followed by the Output File name.

Spectroscopy Type

Choose what type of data should be recorded with the Spectroscopy Type area.

Absorbance When Absorbance is taken as spectroscopy type, an absorption spectrum is recorded. Prior to this, you are asked if a dark spectrum and a blank spectrum should be additionally measured. Both spectra are subtracted from the main spectrum afterwards. If you skip this part only a raw count spectrum is measured. The raw count spectrum can later be converted into an absorbance spectrum in the Echem Analystâ„¢.
Raw Counts Only one raw count spectrum is recorded. No dark or blank spectrum is measured. The raw count spectrum can later be converted into an absorbance spectrum in the Echem Analyst.
Transmittance When Transmittance is taken as spectroscopy type, a transmittance spectrum is recorded. Prior to this, you are asked if a dark spectrum and a blank spectrum should be additionally measured. Both spectra are subtracted from the main spectrum afterwards. If you skip this part, only a raw count spectrum is measured. The raw count spectrum can later be converted into an absorbance spectrum in the Echem Analyst.