NI PXI/PCI-5431
DigiSync

DigiSync enables or disables the digital output data lines on the module

When you select enabled in DigiSync, the VI inserts four digital synchronization signals in order vertical sync (Vsync), horizontal sync (Hsync), composite sync (Csync), and field identification (Field ID) into the four least significant bits of the video data. The video data is created and/or saved as 16-bit data, but only 12 of these bits are used to generate the analog video signal. When you create the four digital synchronization signals, it does not affect the analog signal quality.

Note  Refer to NI PXI/PCI-5411/5431 (Video) Digital Pattern Connector for more information about the location of these TTL signals on the digital output connector of the NI 5431.

Note  Select enabled in DigiSync only if the application needs the four TTL video synchronization signals.