Qualcomm tests 802.11ax.

Qualcomm Technologies, Inc. has begun testing two new SoC integrated circuits, IPQ8074 and QAC6290. They are the first complete commercial Wi-Fi solutions for IEEE 802.11ax amendment of the IEEE 802.11 set of WLAN types. This version of wireless standard, which is at an early stage of development, will focus not only on the speed of transmission, but also on the improvement of overall spectral efficiency in crowded Wi-Fi networks. The new standard should allow a fourfold increase of the user throughput compared to the current 802.11ac version. Thanks to the ability to deal with the diversity and density of the traffic generated by overlapping networks, 802.11ax routers will also be able to improve the performance of older Wi-Fi devices. Just like 802.11ac, the new 802.11ax standard will be backwards compatible with the previous 802.11 generations.

The IPQ8074 SoC is a highly integrated all-in-one platform designed for access points, gateways and routers. It is based on four Cortex A53 cores made in 14 nm technology and provides support for up to 12 data streams. The configurations include 8 streams in 5 GHz band (8x8 MU-MIMO) and four streams in 2.4 GHz band (4x4 MU-MIMO) with channels up to 80 MHz. The SoC IC is capable of handling total stream of 4.8 Gbps covering a larger area than any 802.11ac chip. The second SoC chip, QCA6290, dedicated for client devices, supports 2x2 MU-MIMO configuration. By implementing DBS (Simultaneous Dual Band), it can operate in two separate WI-Fi networks at the same time, using two frequency bands, 2.4 and 5 GHz. This way it will be possible to achieve bit rates up to 1.8 Gbps, and all this with the energy consumption at the level of only one third of that needed by 802.11ac chips. The first devices built on the new platform are likely to be available even before the official approval of the 802.11ax amendment planned for the year 2019.

Video from IP camera distributed in a TV antenna system.

The injection of video signal from an analog camera into TV antenna system is quite simple - it requires only the use of an RF modulator (e.g. MT-32 R871734). In the case of an IP camera, the output signal has a form of a data stream, and this method of providing the video to multiple TVs cannot work.

The problem can be solved by the application of DVB-T modulator SIGNAL-400 R86700, connected to HDMI output of an NVR, in this example K22041. The HDMI signal can carry Full HD surveillance video that modulates selected RF channel in compliance with DVB-T COFDM standard.

The method of introduction of surveillance video from IP camera into TV antenna system
with the use Signal-400 R86700 DVB-T modulator

Of course, the source signal may also come from a multimedia player, DVR, Blu-ray player, PC, STB etc. The modulator can distribute high quality content in the form of DVB-T multiplex via typical RF coaxial cables used in antenna and CCTV systems.

Types of HDMI converters/extenders - part 3.

The H3608 Signal-HD HDMI to fiber optic converter allows for long-range (up to 20 km) transmission of HDMI signal via a single-mode fiber. Simultaneously, it ensures remote control of the HDMI source device by converting and transmitting commands from its IR remote control. The kit includes components for the both ends of the link - transmitter, receiver, power supplies, IR receiver and retransmitter.

Distinguishing features of the H3608 Signal-HD HDMI to fiber optic converter with IR control extender:

• Transmission via via a single-mode fiber, max. 20 km, SC connectors
• FullHD 1080p mode
• Built-in IR RC extender
• The received HDMI signal can be distributed to a number of monitors using HDMI splitter
• The kit includes components for the both ends of the link

Transmission of HDMI signal using an optical link

EasySplicer - calibration of the position of fiber ends.

The toolkit provided together with EasySplicer L5810 contains the dedicated fiber cleaver. We recommend to use the cleaver due to the construction compatible with the holders of the splicer.

The fiber cleaver and stripper for 250 μm fibers are a part of the toolkit provided with the EasySplicer L5810

However, some installers may prefer to use a different cleaver, e.g. with an integrated trash can.

In such a case, the first issue is to verify the lengths of fiber sections after cleaving. The lengths have to be adjusted so that the ends are visible on the screen of the splicer (not necessarily symmetrically). Then, in the Setup menu the installer has to select FIBER POSITION. This procedure will precisely position the fiber ends for the splicing process. This position can be saved in the memory of the splicer. Since then, all identically cleft fibers will be ideally positioned before splicing.

The same function is also useful in the case of using the dedicated cleaver near the end of life of the blade or after its exchange.

Playing back recordings from HDDs.

Surveillance video recordings from HDDs istalled in Hikvisoion DVRs/NVRs cannot be directly played back by PCs running Widows systems. The reason is a proprietary format of the recorded data files. In order to play the recordings on a PC, the user has to employ Local playback application.

A screenshot from the Local Playback app

The program allows playback from up to 16 channels/cameras in two modes, synchronous and asynchronous. The recordings can be searched by date and time and filtered in terms of the type of recording, activation of an alarm input or VCA results. It is also possible to export any recordings to the HDD of the computer.

Images from Hikvision Fisheye camera.

Hikvision DS-2CD2942F-IS K1790 is a modern IP camera equipped with fisheye lens allowing 360°/180° monitoring (with ceiling/wall mounting, respectively). Thanks to a very high video resolution (4 MP: 2560 x 1440 pixels) and ability to cover a large area, the camera ideal for video surveillance in departure lounges, shopping malls, superstores, supermarkets, offices, hotel venues, restaurants, etc. The built-in IR illuminator with range up to 10 m allows for effective monitoring even in complete darkness. With multiple displaying modes, e.g. fisheye, panorama, PTZ, and alarm options such as motion detection, line crossing detection, intrusion detection, the camera can fully protect the whole room. The user, after logging to the camera via web browser or iVMS 4200 application, has access to all display modes. Virtual PTZ can be used for creation of any panoramic view of the scene.

View of the Hikvision DS-2CD2942F-IS K1790 fisheye IP camera

The camera has the following image displaying modes:

The fisheye + 8 PTZ mode in a browser window

February 21, 2017 - high attendance at our training courses.

A course on modern cabling systems in buildings
Krakow, February 2017

February 15, 2017 - DIPOL is again the leader of sales of Hikvision products. For the second time in a row, DIPOL company has become the leader of sales among Regional Distributors. We thank all our customers that helped us to achieve such high sales.
HIKVISION is one of the pioneers of IP CCTV systems. The market capitalization of HIKVISION is over US$ 20 billion and the company employs over 10,000 people, among them 720 engineers in the R&D department. The company has 40 subsidiaries in the world and regional offices in USA, Netherlands, Dubai, Australia, Singapore, Spain, France, Italy, Poland, Great Britain, RSA, Brazil, and also joint ventures in India and Russia. According to independent surveys, the market share of HIKVISION in 2015 was 19.5% and the company became the world leader in the CCTV industry.

Video monitoring of an apartment building based on Sunell IP cameras and Hikvision NVR. The diagram of the IP CCTV system protecting an apartment building, based on 16 Sunell K1676 IP cameras and Hikvision NVR, is presented below. The camera model is really cost-effective, providing high quality video with 2 MP resolution. Its varifocal lens with adjustable focal length within 2.8-12 mm range allows for setting viewing angle from 89° to 35°. The built-in IR illuminator with maximum range of 35 m ensures good visibility at night without additional lighting. A number of functions such as digital image stabilization (DIS), image defogging (DeFog), high light compensation (HLC) improve image clarity in various situations... >>>more

Video monitoring of an apartment house based on K1676 Sunell IP cameras and K22161 Hikvision NVR

Remote control and video monitoring