User's Manual

GPI and Tally Interface
GPI and Tally Interface is a low cost alternative for multi-camera productions where a camera
control unit, or CCU, operator needs to switch video from one of several cameras being
controlled to a single monitor. It features 8 configurable GPIs and 8 configurable 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.
GPI IN 1
GPI IN 2
GPI IN 3
GPI IN 4
GPI IN 5
GPI IN 6
GPI IN 7
GPI IN 8
GPI OUT
GPI OUT
GPI OUT
GPI OUT
GPI OUT
GPI OUT
GPI OUT
GPI OUT
GPI and Tally Interface
GPI IN 1
GPI IN 2
GPI IN 3
GPI IN 4
GPI IN 5
GPI IN 6
GPI IN 7
GPI IN 8
GPI OUT
GPI OUT
GPI OUT
GPI OUT
GPI OUT
GPI OUT
GPI OUT
GPI OUT
Pinout diagram of the DB25 connector
Refer to the pinout diagram on the back of the unit when fabricating your custom cable.
For information on how to configure your GPI and Tally Interface using Blackmagic Videohub
Setup, refer to the ‘Blackmagic Videohub Software’ section of this manual.
Connecting USB to Configure the Control Panel
A USB connection to a computer is used to configure the network settings of the
VideohubController.
Rear view of Videohub Smart Control showing the USB port.
14Videohub Hardware Control Panels