This article details the pin configuration for the QuickLink Tally Connector, which provides tally outputs for Program (PGM) and Preview (PRV) signals across 16 SDI channels.
A Tally system is a visual signalling solution used in live video production and broadcast environments to indicate the status of cameras or video sources. It tells camera operators, presenters, or technical staff when a specific video input is live (on-air) or on preview (queued up next).
QuickLink 37-Pin Tally Connector Pinout
- PGM (Program) lines go high (output voltage) when a source is live/on-air.
- PRV (Preview) lines go high when a source is queued for preview.
- These outputs are voltage-driven, not contact closures. Devices connected to these pins must expect a voltage signal of 3.3V.
- Ground connections (Pins 9 and 28) are essential for proper signal referencing.