This manual is used for all models of digital optical terminal. This manual introduces the technical features, working environment, installation, connection, debugging, use and daily maintenance of digital optical terminal in detail.
This manual provides an overview of the digital video optical transceiver series, describing its technical features, supported video/audio/data formats, and typical applications such as surveillance, traffic monitoring and video conferencing.
It details the front‑panel indicators, rear‑panel connectors, power requirements, environmental limits, installation steps, wiring diagrams, and troubleshooting procedures for common faults. This manual is written in Chinese.
| Signal standard | PAL/NTSC/SECAM |
|---|---|
| Video channel bandwidth | 6.5 MHz |
| Audio channel bandwidth | 20Hz~20kHz |
| Audio sampling rate | 96 kHz |
| Asynchronous data rate | ≥128 Kbps |
| Power consumption | 10 W (single‑ended) |
| Operating temperature | -20 °C to +70 °C |
| Transmission distance (single‑mode, standard) | 0–30 km |
| Transmission distance (single‑mode, long) | 0–60 km |
| Transmission distance (multimode, standard) | 0–2 km |
Use a 75 Ω coaxial cable with BNC connectors to link the video input/output BNC ports on the transmitter and receiver.
When the Video LED is green, a video signal is present at the corresponding input or output port; if it is off, no video is detected.
For full‑duplex mode, connect the external device’s differential TX+ and TX‑ to the transceiver’s RX+ and RX‑ pins, and the external device’s RX+ and RX‑ to the transceiver’s TX+ and TX‑ pins; also connect grounds.
The unit operates from 220 VAC ±20 % at 50 Hz, consuming about 10 W, and includes a 250 V/2 A fuse.