Solution
The DIAdem with Data Acquisition Bundle includes both DIAdem software and the DIAdem Data Acquisition and Control Module software add-on. The DIAdem Data Acquisition and Control Module, sometimes called DIAdem DAC, features two extra panels: DAC and VISUAL.
In newer versions of DIAdem, the Data Acquisition and Control Module is included with the original DIAdem download. DAC and VISUAL will be available in DIAdem if you have activated with a serial number that includes the Data Acquisition and Control Module.
You can verify that the DIAdem with Data Acquisition Bundle was activated properly by checking NI License Manager. Make sure you acquired the right license since there are options for DIAdem Base, Advanced, and Professional with and without the DAC Bundle. See purchasing options in the related links section.