QCD Add-on

4. Historical Data Management

By default, when a letter is created, the time window historical data start with is the current (short term) time window.


. Date value according to the type of time window
Current date Annually Quarterly Weekly
January 1st, 2018 2018 Q1 W1
July 14th, 2019 2019 Q3 W28

These default settings for viewing past data can be changed and they will be automatically saved.

4.1. View of Historical Data

You can access historical data from the utility bar on the left hand side of the screen. By selecting a new time window, all historical data are retrieved and the board elements are automatically updated.


4.2. How to change a time window to view historical data

You can change time window from the utility, by selecting the options shown below according to the frequency set on the board.


Annual frequency

Weekly frequency


Every time you change (short term) time window:

Indicator values ​​over time can be displayed in both graphs and tables in a long-term mode.

4.3. Delete data history


Only room administrators can delete the data history.

  1. From your board, click the QCD utility.

  2. Click View data history.

  3. Click Manage data history.

  4. Select the time windows you want to delete.


    You can select time windows over several years.

  5. Click Delete data history selected (N).