Blackmagic Design Videohub Master Control Pro Installations- Und Bedienungsanleitung Seite 40

GPI and Tally Interface
GPI and Tally Interface is a low cost alternative for multi camera productions where a camera
control unit CCU operator needs to switch video from one of several cameras being controlled
to a single monitor. It features 8 configurable GPIs and GPOs.
The GPIs send commands to your Videohub by Ethernet to switch the selected camera to the
operator's monitor under certain crosspoint conditions. The GPOs send a tally signal to your
cameras or other devices under certain crosspoint conditions.
Refer to the pinout diagram on the back of the unit when fabricating your custom cable.
Setting up the GPI and Tally Interface
The GPI and Tally Interface is configured using the Videohub Hardware Panel Setup. Before you
can use the GPI and Tally Interface, you may need to install the latest version of the software.
1 Connect the power adapter to the GPI and Tally Interface.
2 Connect the GPI and Tally Interface to your computer with a USB Type A to B cable.
3 Open the software and it will detect whether your GPI and Tally Interface has been configured
for a Videohub before. If it has the software will open without any need for changes. Otherwise
a message will tell you your GPI and Tally Interface has been configured for use with an
ATEM Switcher and will need to be reconfigured for use with Videohub. Click Yes. After a few
moments the GPI and Tally Interface will be reconfigured as a Videohub client.
GPI and Tally Interface
Pinout diagram of the DB25 connector
Videohub Hardware Panel Setup 40