GPI & Tally Interface for ATEM Production Switchers
• Displays tallies for indicating the on-air status of video signals
• 8 contact closure inputs & 8 contact closure outputs
• Compatible with ATEM switchers and Videohub routers
• Connect to multiple interfaces offering enhance flexibility in operation

The Blackmagic Design GPI & Tally Interface for ATEM Production Switchers is designed to display tallies to indicate the on-air status of video signals. It features 8 contact closure inputs and 8 contact closure outputs for connecting to ATEM switchers and Videohub routers for operation. Additionally, the GPI & Tally Interface can be used with multiple interfaces to increase the number of inputs and outputs.

Technical specifications:
Connections dd
Contact Closure 25 pin D-type connector providing 8 up to isolated inputs and 8 relay contact closure outputs
Inputs Optical isolators triggered by connection to ground (maximum 5 V @ 14 mA)
Outputs Mechanical relay contact closure to ground (maximum 30 V @ 1 A)
Ethernet 10 / 100 BaseT with loop through for connecting to other Ethernet enabled equipment
Computer Interface 1 x USB 2.0 high speed interface for configuration and firmware updates
Extras 
Software Included Configured via ATEM Switcher utility
Firmware Upgrade Firmware built into software driver. Loaded at system startup or via updater software
Operating System Microsoft Windows 7 and Apple Mac OS X
Power Supply  12 V power supply included with international socket adapters for all countries