DIPOL Weekly Review - TV and SAT TV, CCTV, WLAN
No. 14/2015 (April 6, 2015)
Samsung brings people together by creating virtual reality. The Samsung's Gear VR headset transferring the user into virtual reality, is not just a toy for gamers. The manufacturer has proven that this technology can affect people's lives by creating a virtual connection between people in distant locations. An example is the married couple of Jason and Alison Larke from Perth in Australia. When their third child Steele was expected to be born, they were more than 2,500 miles away from each other because of the job of Jace. Samsung broke the barrier of distance and allowed Jace to participate in this important event. The father, residing in the mining town of Chinchilla, Queensland, witnessed the birth of his child live, captured by multiple cameras creating a virtual reality effect. The Samsung's team installed the video cameras, audio and streaming equipment in hospital room of Alison in Perth. This equipment was paired with the Samsung's Gear VR in Chinchilla, where stayed the father. This way he had the opportunity not only to watch everything that was hap penning in the delivery room, but he also could communicate with Alison in this special moment.
View of the Samsung's Gear VR headset. The gear gains full functionality only in conjunction with Samsung Galaxy Note 4 smartphone. The glasses keep the smartphone on the user's head and transfer the image displayed on its screen to the user's eyes, through special lenses. So, the heart of the entire set is the smartphone providing suitable computing power for running Oculus software processing the image with 3D effect. Aside from delving into the world of movies and games, such system can break the barriers caused by long distances, as shown in the case of Alison and Jason.
The company’s Australian chief marketing officer Arno Lenior said: "Being a father myself I know how incredible the birth of a child is. Alison and Jason’s story is familiar to millions of Australians and the reality of being away from family and friends is a heart-wrenching experience that most of us understand. But through the power of the Gear VR technology we could help Jason welcome his third son into the world in an exciting, unique way. This is what technology is all about: enabling human experiences."
Why to use smart switches? TP-LINK smart and managed switches provide optimal solutions for environments requiring Gigabit Ethernet. Powerful processors and large memory of these devices ensure stable flow of data. The VTC function allows for verification of the condition of the wiring, and dynamic MAC address management makes it easy to control access to individual switch ports. In addition, it is possible to restore the system and create backups of configuration files at any time. All functions of the switches can be managed with an easy Web browser interface.
The main features of the group include:
- Quality of Service (QoS)
- Port bandwidth control
- Support for VLANs
- Virtual Cable Test (VCT)
- 5-year warranty
QoS enables administrators to prioritize network traffic based on IEEE 802.1p standard. This process ensures smooth and free from interference video streaming, VoIP and video conferencing.
Port bandwidth control allows network administrators to define the bandwidth allocated to a port, which ensures reliable transmission of video, audio and network gaming.
The switches support IEE 802.1Q tag VLAN, Port-based VLAN and MTU VLAN.
Smart TP-LINK switches support the cable test function to solve potential problems with network cabling. At the request of users, the system can perform testing of cables connected to the Ethernet ports. The test detects open and short circuit conditions in both directions of transmission, calculates the length of the cable, as well as the distance between the port and the place of the fault.
All the smart and managed switches are covered by a 5-year warranty.
Web Smart Switch TP-LINK TL-SG2424 24xGE 4xSFP N29948
Building amplifiers in shared antenna systems. Building amplifiers are used in shared antenna systems to distribute antenna signals within passive networks. They compensate the attenuation of the distribution networks caused by splitters, taps, cables and antenna outlets. The amplifiers have one input and one output, and often a test output (the level of the test signal is usually decreased by 20 or 30 dB). They also have built-in power supplies and circuits compensating the differences in cable attenuation at various frequencies (slope adjustment). The maximum output level is usually at least 100 dBμV.
High power RF amplifier HA-210 R82305, with gain up to 36 dB and output level up to 107 dBμV
Depending on actual needs, the installer can choose between models with different levels of maximum gain, output signal, frequency range (including the option of the return channel).
It is worth mentioning that the first stage of a large MATV system should be based on channel amplifiers that filter out unwanted signals and equalize levels of the received channels. A building amplifier is to be used as the second stage.
Fiber optic transmission of HD video from HDMI. In the case of extensive video monitoring systems, the monitoring centers are often located at a distance from the recording equipment. In the example illustrated below, a factory hall has been equipped with IP CCTV system with eight IP cameras and NVR placed in a secure server room ensuring data storage security.
Conversion of HDMI to IP signal transmitted via multimode fiber
The control room is located in other building, 400 meters away. It is equipped with large-screen monitor that simultaneously displays images from all the cameras. The images are transmitted to the room independently from LAN, using optical link, optical media converters Ultimode M-023M L10021, HDMI to IP converter Signal H3604 (the H3604 set includes transmitter and receiver units).
This solution has several advantages: the images are transmitted to the surveillance room regardless of the LAN conditions, there is no risk of video data loss in the event of a server failure, the video stream does not affect the network traffic. Additionally, the surveillance staff do not have to log into the system and cannot make any configuration changes.
An alternative to the presented solution is the application of the Signal-HD HDMI to fiber optic converters H3608. This solution is more expensive, but it uses a smaller number of devices (lower power consumption, increased reliability).
Changing parameters of Signal IP cameras using IPCSearcher. The IPCSearcher application is used for searching Signal cameras in the IP network, firmware updating, and changing parameters of the cameras. The application is particularly useful during the initial configuration of any video monitoring system with multiple cameras. The installer does not need to connect individually with each camera in order to change its default IP address. The program detects all devices, even with the same IP addresses, and allows for quick change of their parameters.
In the 188.8.131.52 and 184.108.40.206 versions, it is necessary to change the IP address of the computer running the software, to match the subnet of the target camera. Otherwise, the installer gets information on wrong password (or, in the latter version any changes of the camera parameters simply will not be accepted). To change the network adapter settings or add another subnet, the user of the computer should:
- enter Control Panel ->Network Connections
- right click on network adapter, and then Properties
- select Internet Protocol Version 4 (TCP/IPv4) -> Properties
- a) change of IP address:
- click the Use the following IP address: and manually enter the IP address matching the subnet of the target camera
- b) adding the subnet:
- select Advanced TCP/IP Settings -> IP Settings, enter the IP address and Subnet mask of the subnet, click Add... and then OK buttons
The Internet Protocol Version 4 (TCP/IPv4)
-> Properties window (IP address, DNS)
View of the Advanced TCP/IP Settings
-> IP Settings window
Definitely better solution is the second option (b), because thanks to the addition of another subnet, the IPCSearcher app allows for changing the network settings of the camera maintaining the existing network settings of the PC.
Control of HD-TVI camera settings. The OSD menu of a HD-TVI camera can be directly displayed on the monitor connected to the HD-TVI DVR. The control is possible after selecting PTZ option in the DVR menu and then pressing the "Menu" button. In the HD-TVI system, the coaxial cable between the camera and the DVR transmits not only the HD video, but also bi-directional data used for control of the camera.
The navigation within the OSD menu is possible using the PTZ control buttons, ie. up/down and left/right. The SET button approves the changes. By pressing the ENTER field, the user can enter the sub-menu of the camera function.
In the menu the user can change the settings for a number of functions, such as:
- operation mode
- exposure (shutter, AGC, sense-up,brightness, D-WDR, defog)
- white balance
- noise reduction
- privacy masks
F-connector Platinum F 6 MASTER E80332 is made of brass plated with nickel and is specially prepared for RG-6 cables. Special construction and high precision of the product enable easy installation on the cables. The compression method of installation is very simple and guarantees good and stable connection for a long time.
Fiber optic distribution cable ULTIMODE BS-12SM L7812 belongs to an innovative system of fiber optic cabling with easy fiber access, especially useful in high-rise and multi-dwelling buildings. The fibers can be branched directly to individual subscribers without the need for splicing within the riser of the building. They are easily extracted from breaking windows in the gel-free tube. The cable contains 12 single-mode G652D fibers.
HD-TVI TURBO HD Camera Hikvision DS-2CE56C2T-IRM M7501 has been designed for use in CCTV systems based on HD-TVI DVRs. The camera provides 720p video. With high sensitivity (0.01 lx) and built-in IR illuminator with range up to 20 m, the camera ensures high quality image in low light or even no-light conditions.
March 26, 2015 - change of the Hikvision DDNS server. The Hikvision DDNS server - www.hikvisioneurope.net - will be turned off on April 5, 2015. The addresses of devices in this domain (www.hikvisioneurope.net/device_name) will stop working. The devices that use the server will require new accounts at the new server: www.hik-online.com
Powering of IP cameras - part 1: 48 VDC. Transmission of DC power over long distances is connected with noticeable voltage drop and decrease of efficiency due to power loss in the cable. In the case of a given length and parameters of the line, the voltage drop depends on the current flowing through the cable. The same power can be provided with different parameters, so the current can be lowered with the increase of the voltage. This method has been adopted in the case of PoE technology, where the rated value of the supplying voltage is 48 VDC, instead of 12 VDC used by many CCTV cameras. The PoE technology also employs the unused pairs of UTP/FTP cables that transmit data in 10/100 Mbps Ethernet networks. IP cameras complaint with IEEE 802.3af type B standard can be powered with 48 VDC transmitted via UTP/FTP cables of minimum cat. 3, via the wires 4/5 (+) and 7/8 (-)... more
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No. 13/2015 (March 30, 2015)
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