Chinese researchers at Nanjing University have developed a communication system using light to provide communication in air, water and space. The project involves the use of different wavelengths: 275 nm, 452 nm, 519 nm and 585 nm depending on the environment. It will form the node of a two-way network called ALCN (All-Light Communication Network). Blue-light communication (BLC) is used for underwater communication, while white-light communication (WLC) facilitates communication on the surface....
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The AS07STCA-4K ALPSAT meter for RF measurements – one connector for different signal sources.
In addition to the measurement of individual parameters of digital TV signals, which have a significant impact on the correct implementation and operation of RF/SAT systems, one of the main criteria in selecting a meter is the ease of use and functionality. Certainly, a much more convenient device will be a meter that has one input common for DVB-T2 and DVB-S/S2 signals. This solution eliminates the cumbersome switching or rearranging of the cable when measuring directly from the multiswitch. A...
Quickly configure a monitoring system using a multifunctional CCTV tester.
The process of installing a camera involves positioning it so that all details of interest are in the field of view – for this a preview of the image is required. In addition, in the case of IP cameras, the equipment must be activated, check the correctness of data transmission and power supply, and set the operating parameters. This is often done when power is not yet supplied to the camera point. In such a situation, it is optimal for the installer to use the ALPSAT AS33-IPCX M3214 multifunct...
Building a house? Think of fiber optics.
When designing or building a house, a lot is said about proper planning of cabling for low-current systems. However, laying the right cables outside the house at an early stage is often forgotten. Usually, apart from power cables, these include twisted-pair cables (e.g. for video intercom, surveillance cameras, intelligent house system elements etc.)....
Power outputs in Hikvision modular IP video door stations.
Following an upgrade of the hardware version of the Hikvision DS-KD8003-IME1(B) G73652 and 2-Wire DS-KD8003Y-IME2 G73646 modular IP video door stations, a 12 VDC power output with a load capacity of up to 0.5 A has been introduced. The solution enables direct powering of the electric door strike from the door station using built-in relays, provided that the electric door strike is powered with DC voltage and current...
Library new titles
- 2023-10-03
- Measurements
A short presentation of the new series of ULTIMODE devices for testing and measuring fiber optic installations.
- 2023-10-02
- SUNELL
Sunell is a global supplier of high-quality CCTV equipment. The company has for many years focused on modern and reliable products.
- 2023-10-02
- SUNELL
Tools for configuring, managing and using video surveillance systems based on Sunell cameras
- 2023-05-05
- CATV/SMATV Distribution
Fiber optic systems play an increasingly important role in the transmission of TV/SAT signals. They guarantee low signal loss and very high immunity to interference. DIPOL offers new TERRA solution for SMATV systems based on optical fibers.
- 2022-10-19
- CCTV Video Transm.
The main problem faced by installers implementing a fiber-optic video surveillance system in open areas is to choose the right way to install and connect IP cameras.
- 2022-09-13
- Measurements
This article presents the actual measurement results and how to configure the channel amplifier in the implementation of a SMATV system of DVB-T2 terrestrial television for about 70 terminal outlets.
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