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<< Click to Display Table of Contents >> Navigation: Experiments > F - Pulse Voltammetry > Techniques > Generic Pulse Experiments > Galvanostatic Generic Pulse > Galvanostatic Generic Pulse - Experimental Sequence |
Run the Galvanostatic Generic Pulse standard technique by selecting Experiment > Pulse Voltammetry > Galvanostatic Generic Pulse from the Framework™ menu bar. This initiates the following sequence of events:
1.Framework™ creates a Runner window, and the Galvanostatic Generic Pulse.exp script is run in this window.
2.The script creates the Setup dialog box which becomes the active window and accepts changes in the experimental parameters. This Setup window remembers the experimental settings from the last time this script was run. To restore the parameters to the values defined in the script, click the Default button. If the Advanced Pstat Setup is in the On position, a second Setup dialog box containing hardware configuration details becomes the active window, allowing you to modify the hardware configuration used during the experiment.
3.Using the experimental parameters, the script calculates the approximate number of data points to be collected during the experiment. If the number of data points exceeds the maximum, an error message is displayed.
4.The script now obtains the use of the potentiostat specified during Setup and opens the data file using the Output name. If the potentiostat is in use or the file cannot be opened, the script returns you to the Setup dialog box. The file header information is written to the data file. This information is written to the file prior to data acquisition. If the experiment is aborted, the file contains only this information. This header information includes:
•Tags identifying possible analyses.
•The current time and date.
•A list of the Setup parameters.
5.If the electrode is an HDME, a new drop is formed by momentarily activating the potentiostat's New Drop control bit.
6.The script delays for a time set by the Quiet Time parameter.
7.The potentiostat is initialized. The current range is set to a value which can be used to apply the requested current.
8.If the Equilibration Time parameter is greater than zero, the script delays for set value.
9.The actual scan occurs.
10.The current of the sample is set to the DC Offset. The potential measurement is made as specified in the Setup.
11.The pulse is applied and the potential measurement is made as specified in the Setup.
12.Steps 12 and 13 are continued until the Experiment Time has elapsed.
13.The cell is turned off. The acquired data are written to the output file. The script pauses to allow you to view the curve you have just collected. Close the curve by clicking the F2-Skip button before attempting to open the data file in the Echem Analyst 2™.