GPI Transmission System
Evertz offers a system to encode and decode General Purpose Inputs (GPI's or Contact Closures) via VITC. The generator will generate time code in VITC and will encode the status 5 GPI's in the user bits. This system can be utilized for remote control and remote signaling applications where time code transmission may or may not also be necessary. The full complement of analog and serial digital generators and decoders are available. This system can be used for internal plant as well as remote transmission applications. Integrated with the plant automation system, master control can now extend it's control to remote affiliate sites. Recent applications have been for providing signaling affiliates/remote broadcast centers on imminent commercial slots and simple machine control. The encoder allows the insertion of VITC optionally into the first few lines of active video for specific applications requiring signal over a compressed transmission path (MPEG).
The 8010TM SDI Time Code Master is a full function time code reader/generator system for serial digital video. The 8010TM generates vertical interval timecode and characters directly into the digital video bitstream. GPI Remote Control mode allows the user to pass remote control contact closure information in VITC user bits.
The 7721DD4-HD+GPI allows the user to decode remote control contact closure information from VITC (SD) or SMPTE 12M-2 ATC (HD) user bits. This feature allows the user to use remote control user bit patterns to control the six GPO relay outputs. At the encoder end the 7721DE4-HD+GPI GPI Encoder module encodes the remote control user bits in VITC or SMPTE 12M-2 ATC.