GRASS VALLEY GV K-FRAME XP, Installation Planning Manual

Page: 64 / 87

System Cabling
64
GV K-Frame XP Video Processor Frame GPI/Relay Tally Interface
ClipStore
(Summit)
ClipStore Connection Using Distribution Amplifiers
GV K-Frame XP Video Processor Frame GPI/Relay Tally Interface
The GPI (General Purpose Interface) and relay tally interface provides a means to transfer
commands to and from the switcher to external devices. A one wire per function parallel
hardware relay mechanism is used. The nominal contact rating specification for each relay
is 1A, 60 V.
GPI and Relay Tally Connections
Each Video Input/Output module has a 37 pin female sub-miniature D connector on the
rear of the chassis, available for GPI and relay tally. Each connector has 4 GPI Inputs, 4 GPI
Outputs, and 16 Relay Tally Outputs. Relays are in groups of four with a common ground.
The output relays are the same hardware but the GPI is being driven by the GPI output
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