The parameters for the available source configurations are stored in batch command sets in flash. To configure a source, the desired batch command set index should be executed. Once the batch command set is executed, the Prepare for Source Change command will disable illumination and the software will hold the configuration parameters until the Source Select command is sent. This two-command process provides time to prepare the external video source signals without displaying corrupted video data and causing the software to throw video source detection errors. During normal operation, an external video source should be adjusted between these two commands.
An image may only be displayed in Display Mode or Calibration mode.
The source change steps are summarized as follows:
- Execute Batch Command Set command - Configures the desired display source parameters. This configuration will be held by software and will not be applied until the Source Select command is sent.
- Prepare For Source Change command - Disables illumination and external source error-checking to transition without displaying corrupted video data.
- Configure external video signals as needed if external source is being displayed. For example, adjust video resolution to match the new batch command set configuration.
- Source Select command - Applies the source configuration. Illumination will then be re-enabled and the desired source will be visible on the display.
If multiple external video inputs are used, the following steps must be used to switch between them. This assumes source 1 is being displayed:
- Operating Mode command - Transition to Standby Mode.
- Execute Batch Command Set command - Configures the desired display source parameters for source 2.
- Configure external video signals.
- Source Select command - Holds the source configuration until operating mode select.
- Operating Mode command - Transition to Display Mode or Calibration mode. Illumination will then be re-enabled and the desired source will be visible on the display.