A team of scientists led by Prof. Ming Tang and Dr. Hao Wu from Huazhong University of Science and Technology in China, in collaboration with doctoral students Zheng Gao and Ting Jiang, has developed an innovative optical semantic communication system using multimode fiber (MMF). The new method significantly improves both, the bandwidth and the transmission resistance to interference. The researchers emphasized that they applied multidimensional semantic coding and decoding in the frequency dom...
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Innovative approach to optical semantic communication.
Mobile camera mounted on the windshield.
Modular headend as a signal source in a coaxial system.
Changing the call forwarding time in Hikvision IP video intercom monitors.
In the Hikvision IP video door entry system, it is possible to forward the call of the caller from the external door station, directly to the application installed on the smartphone. To do this, you need to create a Hik-Connect account, add a video door station to your account, install the Hik-Connect app on your smartphone and log in to your account. Add the video intercom monitor to the account, through which the connection with the door station will be made (if you have a Villa-type single-s...
Measurements of the attenuation of splices made with the Sendun SD-9+.
The Sendun SD-9+ L5877 fiber optic splicer is a model the production of which began in the second half of 2023. After nearly two years on the market, the model has gained recognition among a wide range of installers working in various areas of FTTH networks and low-current systems using fiber optic cabling....
Industrial switches.
Industrial switches are designed for installation in demanding industrial environments, where they may be exposed to factors such as high levels of dust, extreme temperatures or high humidity. It is also recommended to install them in systems placed on poles or in telecommunications manholes, using sealed enclosures....
Library new titles
- 2025-01-02
- About TV & SAT Antennas
Choosing the right antenna is a key issue in any TV system. When looking for a suitable model, the following factors should be taken into account – gain, directivity, mounting location, built-in signal amplifier and the band for which the antenna is tuned.
- 2024-08-25
- Installation Components
One of the criteria for classification of TV systems in hotels is the programming to be distributed. The simplest systems may provide only free-to-air terrestrial TV broadcasts, whereas more advanced solutions will include satellite channels, also some premium ones (pay-TV). The content required by the owner/investor will depend on the categories of prospective hotel guests (foreign and thematic channels etc).
- 2024-07-17
- Some Theory
PoE (Power over Ethernet) is the name of a number of methods that allow for powering network devices through UTP/FTP cables. This way it is possible to power devices such as cameras, phones, switches, access points, etc.
- 2024-06-19
- Measurements
Measurement of DVB-T2 terrestrial television signals and DVB-S/S2 satellite television signals. The technique of measuring DVB-T2 terrestrial digital TV signals is not very different from DVB-T signal measurement.
- 2024-06-12
- HIKVISION
Archive library. The information contained therein may be outdated. HikCentral Professional is a complete platform designed to manage Hikvision-branded security systems.
- 2024-05-08
- Measurements
This article summarizes the knowledge for the installer who faces the task of verifying the correctness of a fiber optic system. The article describes in detail all aspects related to the idea and procedures of measurement by the transmission method.
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