| 1. | Manual Scale - This option allows you to manually enter the maximum and minimum values for the Y-axis. The Manual Scales window appears when this button is pressed.
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| · | Type in the values you wish to change.
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| · | To make the changes effective, select the OK button.
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| · | To cancel any changes made, select the Cancel button.
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| 2. | Auto scale Once - This option automatically scales the graph when the  button is pressed. The maximum and minimum values for the Y-axis are calculated using the selected data, the higher limit, and the lower limit. Once these values are calculated, they are retained until this button is clicked again or another scale option is chosen.
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| 3. | Auto scale every machine cycle - Each window update forces a rescale when the  button is chosen. The graph is always scaled according to the displayed data. The maximum and minimum values for the Y-axis are calculated using the selected data, the higher limit, and the lower limit.
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