The script creates the Setup dialog box, which becomes the active window and accepts changes in the experimental parameters. This Setup box 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 on, a second Setup dialog box containing hardware-configuration details becomes the active window, so you can modify the hardware configuration.
The potentiostat is initialized. The current range is set to a range that allows the measurement of currents as big as the value of the Max I Setup parameter.
The actual scan occurs.
The potential of the sample is set to the Initial E. At the end of this time, a current measurement is made. If the electrode in use is a SMDE or DME, the mercury drop is dislodged.
The Initial E is applied to the cell during the initial stages of the second (and subsequent) current measurement. After a time equal to (Sampling Period – Pulse Width), a pulse of magnitude (Step Size) is applied to the electrode. The voltage step sign is controlled so that the pulse is always in the direction of the final potential. This voltage pulse is held for one Pulse Width. At the end of this time, a current measurement is made. If the electrode in use is an SMDE or DEM, the mercury drop is dislodged.
If Autoranging was selected in Setup, after each point the current range is automatically switched to the optimal range for the measured cell currents.
The cell is turned off. 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™.