![]() Looking at it as physical SDI I/O, this actually means SDI 1+2, 3+4, 5+6 and 7+8 due to the interleaved layout of the devices.Įach of the devices 1, 2, 3, 4 can be set as "Dual-Connnector". The 8 devices actually consist of 4 pairs of 2 devices. The illustration below shows how SDI 1 appears as device 1 to the software, but SDI 2 appears as device 5. As the software will read the devices in their order, please observe how the physical SDI ordering is interleaved: SDI 1, 2, 3, 4, 5, 6, 7, 8 appears as devices 1, 5, 2, 6, 3, 7, 4, 8. The software addresses the device, and it is important to understand how the devices map to the physical SDI I/O. ![]() Each of the 8 single-connector devices can be used by the software as either an input, or an output. The Quad 2 card has 8 devices, but only if they all are configured as "Single connector". The software interfaces with the card through an abstraction named a Device. Configuring the card through the Desktop Video Software (found in the Windows Control Panel) decides how many devices it exposes, how they work, and if they are used as inputs or not. Start by considering that all SDI I/O can be switched from inputs to outputs, which makes it a challenge to draw wire diagrams without having a plan for how the card will be used in a specific setup. The confusion comes from the card's flexibility to operate in multiple modes. The biggest source of confusion comes from the relation between the physical SDI I/O ports and the inputs and outputs exposed to the software that will be using it. In most PC tower cabinets that means that the card itself is mounted upside-down, which also means that you can locate the SDI ports left-to-right, starting with Ref, or bottom-up for rack-mounted cabinets (without PCI raisers). Tip: The Ref input connector (used for Genlock or Tri-level) will always be located closest to the motherboard. However, the device-mapping will work similarly with software like vMix and OBS. Our examples shows usage together with CasparCG. In this document we will be using the Decklink Quad 2 as an example, meaning we will describe having 8 configurable devices. ![]() ![]() Some other card models (newer than Duo 2/ Quad 2) might have the same architecture, but anything older than Duo 2/ Quad 2 will not work as described below. Important: Applies to Duo 2 and Quad 2 card. ![]() Decklink card configuration for use in CasparCG (or similar software) ![]()
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