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LIBRARY NEW TITLES
2014-04-14Universal diagrams of CCTV systems The case studies present basic CCTV systems, analog, hybrid, and IP. These are examples of video surveillance systems for homes, stores, parking lots, towns. more »
2014-04-07Twisted-pair cables - nomenclature, standards, parameters Twisted-pair cables are used to transmit signals in telecommunication systems and computer networks. Currently they are mainly used in analog telephony and Ethernet networks. Twisted-pair cables may consist of one or more pairs. The twisting strongly reduces the influence of external electromagnetic interference and mutual interference between the pairs, called crosstalk. more »
2014-03-12Video surveillance system in a hotel Installing a CCTV system, one has to carefully select the places that should be monitored, deploy appropriate cameras, choose suitable DVRs and hard drives. After the analysis of the facility and potential dangers, the company installed a total of 33 n-cam and v-cam cameras. It is also important to monitor all the entries and exits to/from the hotel building. Properly selected and installed cameras should be able to capture images that allow the identification of any person entering or exiting the building. It helps to protect the guests and the hotel property. more »
Gigabit WiFi!? In early April, Qualcomm announced that after several years of work it developed network systems employing MU-MIMO technology. The chipset manufacturer plans to sell its network systems to producers of tablets, smartphones, routers and access points. The first device should appear in stores in early 2015. This means that in a year we will be able to purchase consumer devices offering significantly higher wireless transmission speeds. more »
Joint box - full protection of optical connections. Installation of fiber optic networks outside buildings is not complicated if the installer has the appropriate equipment and accessories. The key to stability and reliability of the connections and links is the use of appropriate protective measures for the splices, splitters, adapters, connectors. more »
Multiswitch SMATV systems for 300 users in Bierun, Poland. The diagram below (click on to enlarge) shows the design of an independent SMATV system installed in each of five multifamily buildings in the town. Each of the buildings has 60 apartments and the users get access to satellite channels from two satellite positions, Hotbird 13.0E and Astra 19.2E, and to terrestrial broadcasts - DVB-T channels and FM radio signals. Every building SMATV system consists of the master antenna set with satellite dish with a diameter of 110 cm A9658 equipped with two QUATRO LNBs A98266, terrestrial TV antenna DIPOL 44/21-69 TRI-DIGIT A2670, FM antenna A0221, a set of ALCAD channel amplifiers, and RF distribution network based on multiswitches. The multiswitches come from the TERRA MSV series. All the systems have been installed by the E-SBL.NET SP. Z O. O, CHELM SLASKI company. more »