Variable Centerline Analysis

This ASA report graphically displays information about each variable on the selected display. When you configure the report, you can:

  • Specify the start and end times

  • Select the display that has the variables you want to analyze

  • Filter by product

  • Filter by event

  • Include or exclude non-productive time

For each variable on the selected display, the report graphically indicates the upper and lower bounds, the mean, and the minimum and maximum values for the specified time period. The upper bound is the average plus three standard deviations. The lower bound is the average minus three standard deviations. The inverted triangle indicates the last value, which is also displayed next to the thumbnail trend.

Each bar represents the range of data. The color of the bar shows whether the average value was within specification. To change the color scheme, see the topic, Color Schemes.

  • Red: Average is within the reject limits

  • Blue: Average is within warning limits

  • Green: Average is within target limits

Only variables with specifications for the most recent production run (product) are displayed. If your selected time period overlaps the start and end time of two production runs, then only the values for the variables associated with the most recent production run will be displayed.

You can select a different display from the drop-down list. You can click a thumbnail to view an interactive Trend Display.

Variable Centerline Analysis Web Report

 

The variable name

Click a thumbnail to view an interactive Trend analysis. The background color indicates whether the last value was within specifications.

  • Green: The last value was within target limits

  • Blue: The last value was within the warning limits

  • Red: The last value was within reject limits

The line color indicates whether the values were within specification at each specific time.

The last value. The inverted green triangle also indicates the last value.

Lower bound = Average – 3 std. dev.

Upper bound = Average + 3 std. dev.

Minimum value

Maximum value

Mean

Displays the name of the Autolog display. Click the arrow to view  a list of available displays.

Use the arrows or click the Clock icon to change the time period. Click the View History icon to view a history of visited pages. Click the Properties icon to adjust the report time range, select a different display, or filter by product.

Click the Alarm icon to view the Alarm List by Unit report.

 

See Also