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General
The LL8023 is a Dual Data Transmitter and Video Receiver.
The Data Transmitter is used in Video Systems for low speed data communication interfaces over Fibre. It is compatible with LL232, which is a RS232 to fibre interface and the LL422 or LL8422, which is a RS422 or RS485 to fibre interface.
The Video Receiver converts an optical signal received from the fibre into a composite video signal that is transmitted into a BNC connector. When the optic signal is present a led indicator will light up.
This unit is designed to fit into a LL800 19? sub rack system. The card is a standard eurocard size.
This unit operates autonomously.
Features - Slots into existing LL800 Rack.
- Interface directly to the LL8021 Single channel RS422 Receiver and Video Transmitter.
- Compatible with standard composite video.
- Economical.
Uses - Ideally suited for Pan Tilt Zoom systems in video applications.
- Multi-point Access Control Systems.
- Other Security & Control Systems.
Basic System Description The Data Transmitter is used to control the camera. It converts the RS422, one directional data signal into an optical signal and transmits it into the fibre. The Video Receiver converts the optical signal into a composite video signal. The AGC circuit then checks the amplitude and corrects the signal before transmitting it into the 75 BNC connector
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