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No. 33/2015 (Oct. 19, 2015)
The breakthrough on the road to replace silicon with graphene nanotubes.
IBM announced that they were able to eliminate one of the major problems standing in the way of the development of graphene transistors. Although high performance of the transistors, there were problems with connections - significantly larger than the transistors themselves. Smaller contacts caused increased resistance and a significant deterioration of parameters of the circuits. Researchers from IBM developed a new process of chemical bonding of the transistors with "wires" of a thickness of 10 nm, without an increase of the resistance.Computer processors are made of silicon transistors. Due to predictions based on physical properties of silicon, the minimum size of the transistors is about 7 nm. The latest Intel processors are manufactured in 14 nm process technology, so they are approaching the limits of size reduction.
Three-dimensional models of the structure of single-layer carbon nanotubes
Nanotubes are supramolecular structures in the form of hollow cylinders. They are built from folded graphene with a thickness of 1 atom. They have a number of properties which can be used in nanotechnology, optics and electronics. The remarkable properties include high thermal conductivity and very high mobility of charge carriers.
The winners:
1st prize - Izabela Laszewska-Mitrega
2nd prize - Tomasz Pol Pytlik
3rd prize:
Because of numerous complaints regarding illegal ways of getting more likes for photos in our competition, we decided to revoke the award. We will hand over the tablet for the auction of the Great Orchestra of Christmas Charity. As a compensation, those who have received more than 100 likes for their photos, will get DIPOL mugs. We apologize to all the participants for the situation. Thank you for your understanding. The DIPOL mugs go to: Pawel Lapinski, Patryk Piwnicki, Michal Zietara, Gabriela Rybicka, Pawel Boszkiewicz and Dariusz Cerajewski.
Distinctions:
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Magdalena Ziegenhagen | Anna Slowinska | Janicki Sebastian |
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Agnieszka Rusinowska | Tomasz Szczyrba | Ryszard Unton |
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Maria Wojdecka | Marek Czeremski | Marek Olszycki |
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Piotr Manczak | Joanna Proborszcz | Maciej Dratwinski |
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Jolanta Ryczewska | Dariusz Mitrega |
Congratulations to the winners! We invite everybody to have fun next year!
Master BNC connectors for CCTV systems.
BNC connectors can be the cause of many problems in the implementation of CCTV systems, already at the installation stage. The reasons of the problems are uncertain connections. The situation is even worse in the case of outdoor installations, where various weather conditions (including temperature changes and water penetration) accelerate the speed of corrosion. It deteriorates the quality of video monitoring or even can stop operation of some channels. This is unacceptable, especially in the case of critical applications, such as bank or city video surveillance systems. |  |  |
BNC Connector BNC 59 MASTER (compressed on CAMSET/RG-59) E8275 | BNC Connector Platinum BNC 6 MASTER (compressed on RG-6) E8276 | BNC Connector Platinum BNC 113 MASTER (compressed on Triset-113) E8277 |
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Angular BNC Connector BNC 59 MASTER (compressed on CAMSET/RG-59) E8278 | Angular BNC Connector BNC 6 MASTER (compressed on RG-6) E8279 |
Appropriate design and excellent accuracy of MASTER connectors eliminates any problems with installing them on cables. They can be easily screwed on sockets, as well. Properly compressed connections are highly resistant to break, due to dual compression rings that also prevent entering of water from the side of the cables and this way protect the connected devices. The indispensable compression tool is either MASTER E80075 or universal MASTER E80078.
- Compliant with standard - in 2003, the IEEE established 802.3af PoE standard, upgraded to 802.3at in 2009. 802.3at distinguishes between the first type (prior 802.3af) and the second type with maximum transmitted power of 30 W, nearly two times higher.
- transmission of power and data via a single cable reduces wiring and installation costs,
- at least 100 m range (with appropriate cabling),
- high security and and reliability - in typical conditions the risk of electric shock is not high (the voltage is below 60 V) and the technology involves auto-testing procedures,
- protection of devices not compliant with the standard,
- ease of installation,
- backward compatibility with older versions.
Main features of the standard:
Wiring diagram for a PoE switch (endspan) and an 802.3af (802.3at type 1) powered device.
Option A - violet color, option B - yellow color.
Option A - violet color, option B - yellow color.
- Passive PoE transmits power through selected conductors of UTP/FTP cable. The supplying voltage can be connected directly to the powered device or injected by a special adapter. There is no communication between the power source and the powered device - the power is provided continuously. The wiring is usually made according to option B of IEEE 802.3af (use of free pairs 4/5 (+) and 7/8 (-) in 10/100 Mbps Ethernet networks). The supplying voltage depends on the requirements of the powered PoE device, e.g. 5 V, 9 V, 12 V, 24 V or even 48 V. It should be noted that passive PoE solutions are not compatible with the 802.3at standard and are not recommended for use in professional networks.
Wiring diagram of a passive PoE injector and powered device - a non-standard solution
Mechanical splices - questions and answers.
Installers beginning their adventure with fiber optics have many questions concerning fiber splicing. As we know, this job not as simple as in the case of copper cables. To dispel doubts about mechanical splices, we decided to answer the most frequently asked questions.![Fiber Optic Mechanical Splice: ULTIMODE FAST-MS1 [5 pcs.]](https://static.dipol.com.pl/images/en/pict/l5550.jpg)
- What is a mechanical splice? Mechanical splice is a component for joining two separate optical fibers, made with high accuracy allowing for precise and permanent positioning of the prepared fiber ends to minimize signal attenuation.
- What tools are needed to make a mechanical splice? The installer needs fiber optic stripper L5905, precision fiber cleaver L5801, IPA solvent cleaner L5915, and dust-free Kim-Wipes L5913. Other very useful tools are visual fault locator L5935, optical power meter L5821, optical laser source L5825, fiber scraps trash can L5918 and scissors for cutting Kevlar(R) L5904.
- What fibers can be to joined using mechanical splices? Mechanical splices can be used for joining single-mode and multimode fibers with buffer or jacket diameter of 250 μm and 900 μm.
- What is the attenuation of mechanical splices? Properly installed mechanical splice has an attenuation of less than 0.15 dB. Practice shows that skilful installers using mechanical splices are able to achieve attenuation level identical with that of fusion splices. The loss of a splice depends on many factors, but mainly on the accuracy of the fiber cutting and the manual skills of the installer.
- Are mechanical splices strong and durable? Mechanical splices are sufficiently strong and durable. However, they should not be exposed to longitudinal forces, therefore they should always be placed in specially designed compartments in installation boxes or distribution frames. Well-protected mechanical splices guarantee durability of the connections.
An example use of line crossing function in Fisheye camera.
Hikvision DS-2CD2942F-IS K1790 Fisheye IP camera mounted on a ceiling has viewing angle of 360°, mounted on a wall - of 180°. Cameras of this type are becoming increasingly popular because of the possibility of replacing several cameras with only one that covers the entire area. An example application can be video monitoring of a small grocery store. Such a camera installed in the right place can monitor the whole room. The Hikvision DS-2CD2942F-IS camera has additional function that can protect a "sensitive" area in the store - line crossing detection. After someone crosses the previously defined virtual line, the cmera triggers alarm signal that can be transmitted to a monitoring center running iVMS 4200 software or can directly turn on an optical and/or acoustic alarm installed in the store. The typical use of the virtual line in a store is protection of the counter/cash desk area. If anyone crosses the line in the absence of the cashier, the system automatically triggers an alarm.
Monitoring of a store using single fisheye camera with the functionality of virtual line
Watermark on recordings from Hikvision DVRs/NVRs.
A watermark is a kind of marker for digital video and audio files. It is usually used to encode copyright, authenticity and integrity information into the main data. The recordings of Hikvision DVRs/NVRs include the information in each frame. The watermark information can be displayed using VSPlayer software, the player dedicated for playing back recordings from Hikvision devices. With the player, the watermark explicitly certifies the authenticity of a recording from a specific DVR/NVR.
A watermark displayed with VSPlayer (within the red frame)
The watermark contains the following information:
- MAC address,
- serial number,
- channel number,
- date and time of the beginning of the recording,
- information on the model and type of the device.
 | Wireless Access Point TP-LINK EAP220 (N, 600 Mbps, PoE 802.3.af) N2566, compliant with Wi-fi 802.11n standard and using 2*2 MIMO technique, provides a flexible, easy-to-install, manageable and secure business-class wireless network solution. It can be easily mounted to a wall or ceiling. WLAN configuration and management are simplified through centralized management software. TP Link EAP devices also provide captive portal and automatic RF management, making them ideal for high-density, demanding business environments, such as campuses, hotels, shopping malls, offices. | |
 | Compact IP Camera Hikvision DS-2CD2042WD-I (4MP, 4mm, 0.01 lx, IR up to 30m, WDR) K1777 comes from a new series (2-line) of low-budget devices, IP cameras and IP NVRS, dedicated for anyone who wants to build low-cost high-resolution IP CCTV system. The compact camera has been equipped with high quality 4 MP (2688x1520) CMOS sensor providing perfect video even in low-light conditions. The camera features intelligent analysis functions such as line crossing and intruder detection in a specific area. In the case of H.264 compression, the user can setup region of interest (ROI) - a part of the image with increased video transmission parameters. | |
 | Smart Gigabit Switch TP-LINK TL-SG2008 N29937 is a desktop device enabling smooth data transmission in 10/100/1000 Mbps Ethernet networks. The switch with eight gigabit ports (RJ45) features advanced security functions, QoS, and multiple second layer management tools. The traffic management functions include: support for LACP protocol and VLAN 802.1Q, access control lists (ACL), QoS for layers 2 to 4, Storm control, and IGMP snooping. These characteristics make the switch a good and economical choice for network solutions in small- and medium-size companies. | |
News
October 9, 2015 - SatKurier Awards given away! The awards for the best products in the field of digital television were given during the gala crowning the digital television exhibition SAT Krak 2015. This year, DIPOL company got statuette for the series of HDMI extenders/converters, in the category "Best accessories". The line of products enables users to transmit HDMI signals over longer distances via various kinds of cables.
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October 7, 2015 - new Hikvision price list. Since that day, many Hikvision products have become cheaper, especially from the "Easy IP" series, and those in the promotion. Wide range of products, excellent quality, competitive prices are the main reasons for the common conviction that the use of Hikvision solutions guaranties cost-effective, high quality and reliable CCTV systems.
Worth reading
Remote power feeding of MV multiswitches in SMATV systems. Power supply over a coaxial cable is limited by the resistance of the cable. The voltage drop is directly proportional to the intensity of the current flowing through the cable. The total resistance (inner plus outer conductor) of the TRISET-113 E1015 cable is about 30 Ω/km. The H (18 V) lines of the SA-51 R70501 and SA-901 R70901 amplifiers can feed multiswitches with currents up to 2 A... >>>more
Power supply through H lines
Master connectors - the perfect choice
