Cleaving optical fibers without secrets – blade adjustment.

Proper preparation of the ends of optical fibers is the basis for successful fiber splicing. Even the best and most expensive splicing machine will not be able to properly connect dirty or improperly cleft fibers. For this reason, care for the cleanliness of fiber optic tools is extremely important.

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How to secure monitoring systems against cyber attacks?

Video monitoring devices can be easily classified into a wider range of products that can form the Internet of Things (IoT). Many devices used in everyday life, such as TV sets, refrigerators or washing machines with embedded electronic systems and equipped with network interfaces can process and transfer data via network connections.

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RACK board - vertical mounting system in RACK cabinets

The RACK board system allows for use both of the front and side surfaces of a RACK cabinet, available after dismantling side walls. The solution enables the installer to achieve unprecedented volume filling factor of the cabinet, while maintaining good access to all signal distribution devices, with proper ventilation, connection transparency, application of patch panels to connect all inbound and outbound cables. All the features make it easy for technicians to diagnose the network during operation.

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Designing FM/TV and SAT TV distribution systems in multi-dwelling units

The article introduces concepts of implementing distribution systems of terrestrial and satellite radio and TV signals in multifamily buildings. Any subscriber is able to receive terrestrial FM/DAB/TV signals broadcast in the area, and satellite radio/TV signals from two satellite positions. All the signals come from one master antenna set... (in translation)

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Twisted-pair cables - categories, shielding, applications

Twisted-pair cables are used to transmit signals in telecommunication systems and computer networks. The most popular twisted-pair cables are composed of four pairs of twisted insulated copper wires. The twisting strongly reduces the influence of external electromagnetic interference and mutual interference between the pairs, called crosstalk. Currently, the cables are mainly used in telephony and Ethernet networks.

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Wireless access to the Internet in schools based on TP-Link devices

Wireless network in a school should provide access to the Internet throughout the school building and offer bandwidth sufficient for comfortable use of network services by students, teachers and administrative staff. The key factors in choosing the devices is their bandwidth and the maximum number of supported users.

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Single-cable multiswitches -TERRA dSCR (Unicable system)

Legacy multiswitches operate in the 950 to 2150 MHz range and together with a Quatro LNB allow for distribution of DVB-S/S2 satellite programming, DVB-T terrestrial broadcasts, analog FM/ radio broadcasts from one master antenna set to many DVB-S/S2 receivers, TVs, stereos. The job of a multiswitch is to enable any satellite receiver in the system to tune to any satellite channel (polarization/band pair) across the whole range of satellite reception. For this purpose, such a receiver sends via its input and coaxial cable suitable commands (14/18 V supply voltage, 0/22 kHz switching tone, and, in the case of 9-input multiswitches, DiSEqC control signal). The result of the commands is the selection of the adequate input of the multiswitch connected to its output (connected with the input of the receiver).

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SADP application - LAN tool for organizing CCTV systems based on Hikvision devices

SADP (Search Active Device Protocol) is a free and simple to use utility for searching Hikvision IP cameras and Hikvision DVRs/NVRs in the local network. The online device search tool can also be used for modification of network parameters of the Hikvision devices, including the change of passwords or recovery of default passwords (when the user lost/forgot a password). It can eliminate problems with duplicated IP addresses (occurring after connecting a number of devices), even in the same network class. The software is available for Microsoft Windows 10, Windows 8.1, Windows 8, Windows 7, Windows 2008 - 32/64-bit, Windows XP, Windows 2003 - 32-bit.

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How to solve the problem with CCTV video viewing in Firefox browser?

Firefox version 52 has changed the default settings for NPAPI plugins. This involves problems with displaying images (continuous prompts for installing plugins that have been already installed) from Ultimax and ***Hikvision***www.dipol.com.pl/hikvision--producer,search*** cameras and DVRs/NVRs. It is possible to restore support for the plugins by setting the appropriate variable in Firefox options.

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Fiber-optic technology in CCTV systems - practical issues

The main problem faced by the installer implementing video monitoring system is the choice of the appropriate type of fiber optic cable and wiring topology for the particular installation. Because the most common questions relate to installations where cameras are deployed on poles or lampposts, all the examples refer to this type of implementations, however the information is relevant to other types of installations, as well.

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