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No. 7/2025 (February 17, 2025)
Linear TV is following the Internet – Addressable TV.
Innovative technologies have the potential to replace traditional TV commercials and could become standard in every second TV set worldwide within a few years. Industry experts predict that addressable advertising could completely replace classic commercials in the future. Despite the technology challenges, addressable TV is developing rapidly and can have a significant global reach. Dynamic ad insertion (DAI) allows broadcasters to customize advertising content for specific target groups. This allows companies to target their campaigns to precisely defined segments, e.g. local customers, individuals with a higher purchasing power, travel enthusiasts or console gamers. This technology has been conquering the market for several years now – one example is TVN Warner Bros. Discovery, which introduced Addressable TV in October 2022. Initially, it covered terrestrial viewers with HbbTV functionality, and then expanded its reach to streaming services. In the first several months of operation, almost 300 campaigns were completed using this model.
In linear television, all viewers watching a given channel see the same commercials. Dynamic Ad Insertion will allow for dynamic ad switching depending on, for example, the place of residence of the TV user. However, there will probably be many more criteria, as is the case with the profiling of ads shown to Internet users.
Currently, digital terrestrial television reaches every third viewer, and streaming in Poland has not yet achieved the same popularity as in the United States. For DAI technology to reach satellite and cable TV viewers, a large number of set-top boxes need to be replaced. The greatest challenge is building up the scale which depends, among other things, on the number of Smart TV devices and the technological readiness of cable and satellite operators. Nevertheless, it is predicted that within 3–4 years Addressable TV will be used on about half of the devices in Poland. This will enable advertisers to achieve their goals more effectively and viewers to receive content tailored to their interests and needs, which increases the acceptance of advertising messages.
Transmission of DVB-T2/C signal via optical fiber.
Providers of DVB-T2/C transmission services via optical fiber mostly use traditional optical transmitters and receivers, e.g. the mo418 R82522 transmitter and the OD-005P R81760 receiver. Such connections use only separated cables with single-mode fibers, and the division of the signal to deliver it to different locations is carried out using passive optical splitters.An alternative solution is to convert the DVB-T2/C signal (coming, for example, from a headend) into an IP stream, transmit it over a traditional fiber-optic network (so-called active Ethernet), and then convert it back into DVB-T form. For such signal conversion, you can use:
- IPTV streamer sti441C TERRA R81592 which enables the conversion of 4 DVB-T2/C digital multiplexes to an IP stream
- IP transmodulator mix-440 TERRA R81611 which converts the IP stream to the DVB-T COFDM standard or IP transmodulator miq-440 TERRA R81631 which converts the IP stream to the DVB-C QAM standard
The IP stream itself can be transmitted via a fiber optic cable connecting any Ethernet devices - media converters, switches with SFP modules, etc. The advantage of such a solution is the possibility of transmission in both single-mode and multimode networks. Signal splitting is done on traditional switches, so in most cases there is no need to modify the existing network.
Transmission of the DVB-T2 digital terrestrial television signal from four digital multiplexes over a distance of 20 km using single-mode optical fiber
Controlling of the second relay with a card in Hikvision modular IP video door station.
If a card reader is connected to the door stations of the modular IP video door intercom system (DS-KD8003-IME1(B) G73652) or 2-Wire (DS-KD8003Y-IME2 G73646), e.g. DS-KD-M G73662, it will be possible to control the first or second relay using a tag. The configuration can be done, for example, using the iVMS-4200 application or a web browser. After logging into the main module of the door station via a browser, first activate the second relay in the Configuration -> Intercom → I/O Settings tab, then select Output2 in the Output No. tab and check the Electric lock option in the Output tab. After that, the second relay will be available to the user. Then add a user, assign a card to them and specify whether the relay Door1 or Door2 should be controlled when the card is presented.
View of the user addition window with the assignment of a card to Door2
Multimode fiber optic standards in Ethernet applications.
The development of multimode fiber standards is mainly geared towards their use in data centers. The possibility of fast transmission over short distances and the use of spectral wave division multiplexing (SWDM) combined with the relatively low price of VCSEL lasers are the main reasons for the huge popularity of multimode fibers in this market segment.Nevertheless, investors building their LANs or IP monitoring systems often decide on multimode fibers. These decisions may be based on economic grounds or result, for example, from the designer's habits. The following table summarizes the ranges of multimode fiber standards (from OM1 to OM5) in the context of their use in popular Ethernet applications (1 Gbps, 10 Gbps and 40/100 Gbps).
| 1000BASE-SX | 10GBASE-SR | 40/100GBASE-SR4 | SWDM | |
| OM1 | 275 m | 33 m | ||
| OM2 | 550 m | 82 m | ||
| OM3 | 300 m | 100 m | ||
| OM4 | 400 m | 150 m | ||
| OM5 | 400 m | 150 m | YES |
Having analyzed the table above, it is easy to understand why the main area of application for multimode fibers are the aforementioned data centers. The transmission capabilities (distance) of this type of fiber are relatively small, but sufficient for use, for example, when connecting cabinets within a server room. Note that only the OM3 standard surpasses the capabilities of copper twisted-pair cables even of the highest categories. OM5 and OM4 do not differ in terms of transmission range, but OM5 allows the number of fibers used to be reduced through the use of wave division multiplexing (SWDM) techniques.
SWDM technology involves multiplexing four signals at four light wavelengths: 850, 880, 910 and 940 nm and transmitting them in a single transmission medium. Implementation of SWDM technology into an optical network is possible only if the network infrastructure is based on OM5 broadband fiber. Then it is possible to quadruple the bandwidth of the network or significantly simplify its architecture and reduce cabling density.
Application of PoE switches.
A PoE switch is an advanced network device that allows simultaneous data transfer and power supply to connected devices via a single Ethernet cable (e.g. Cat5e, Cat6). Power over Ethernet technology eliminates the need for separate power supplies and electrical cables, which significantly simplifies installation and reduces infrastructure cost.Main applications of PoE switches:
- IP monitoring: PoE switches are commonly used in video surveillance systems. IP cameras can be installed anywhere, even where there is no access to traditional power sockets. Thanks to PoE, cameras receive both, power and a network connection which makes their deployment and configuration easier.
- Wi-Fi networks and access points: large facilities such as offices, warehouses, hotels and shopping centers require an extensive Wi-Fi infrastructure. With PoE switches, access points (APs) can be conveniently connected and powered, eliminating the need for additional power adapters and extension cords.
- VoIP (Voice over IP) telephones: PoE switches are often used in companies and call centers to operate VoIP telephones. This allows the telephones to be powered via the Ethernet network simplifying installation and allowing for more flexibility in office space organization.
- Building automation and IoT systems: modern buildings use more and more intelligent devices, such as access control systems, motion sensors, thermostats and lighting controllers. PoE allows for easy connection and management of these devices, making it a key solution in building automation.
- Multimedia systems: PoE switches are used to power information screens, advertising displays and interactive control panels in offices, shopping malls, airports and conference centers. Thanks to PoE, screens can be easily set up without the need for additional power cabling.
PoE switch is an ideal solution for modern networks that require reliable power supply and data transmission in one cable, ensuring convenience and time savings during installation and daily use.
An example of a PoE switch from DIPOL. ULTIPOWER PoE switch 0098af 9xFE(8xPoE) 802.3af 124 W N29982.
How to connect Sunell cameras to a Dahua recorder?
The ONVIF protocol enables the cooperation of IP cameras and recorders from different manufacturers. It allows the recorder to detect the camera, manage its settings, receive video and audio streams, and control PTZ (pan-tilt-zoom) functions in the case of cameras with such functionality. For the camera and the recorder to be able to work together via ONVIF, both devices must support this protocol and it must be activated (on Sunell cameras it is activated by default).In practice, this means that the NVR can detect the camera on the network, connect to it and then receive and save the video stream. With Dahua NVRs, cameras with an active ONVIF protocol are automatically searched for. The process of adding a camera only requires entering the device password. On rare occasions, it may be necessary to add other cameras manually by entering the IP address, ONVIF port (default 80, 8000, 8080 or 8899), username and password.
Camera management panel in the Dahua recorder, accessible via web browser
 | ULTIMODE OR-30-S3S5S62B-iSMV OTDR/fibre optic and copper network tester L5835 is a device designed to perform measurements and diagnostics of fiber optic connections. It combines the functions of: an OTDR, optical power meter, light source and visual fault locator. In addition, it has the function of copper cable locator (operating in analog or digital mode) and the function of connection map for twisted-pair cables. Thus, it provides a universal installation diagnostic tool for telecom network contractors and others. | |
 | LNB cover for a satellite dish arm A9840 is made of durable and UV-resistant materials. It protects the LNB from rain, snow, ice, dust and other contaminants. It prevents the accumulation of ice and snow on the LNB, which can interfere with signal reception. | |
 | TandemVu IP PTZ Camera Hikvision DS-2SE4C425MWG-E(14F0) (4 MP, AcuSense, ColorVu) The K17962 is a hybrid camera from Hikvision's TandemVu series, which combines the advantages of a fixed wide-angle panoramic camera and a PTZ camera. The fixed module allows you to observe a wide area, while the PTZ module allows you to zoom in precisely to observe details. The PTZ camera allows you to watch the area outside the field of view of the fixed camera. The model described here is equipped with AcuSense technology, based on a deep learning algorithm that allows human and vehicle objects to be filtered out, resulting in greater operational efficiency and reduced false alarms. The fixed module is equipped with ColorVu technology and has a 4 MP sensor with a focal length of 2.8 mm. The PTZ module has a 4 Mpix sensor with a focal length of 55°–2.4°. | |
Worth reading
DVB-T2 – regeneration of digital terrestrial TV signal. For large facilities and in situations where the facility (hotel, guesthouse) is located in an area with weaker signal availability or the signal is interfered with, for example, by other transmitters, it is recommended to use a professional system based on TTX420 R81616 transmodulators from TERRA. The TTX-420 transmodulator, acting as a DVB-T/T2/C signal regenerator, improves signal quality. It is used when the error rate (high bit error rate BER and low modulation error rate MER) in the signal directly downstream of the antenna is high and the use of channel amplifiers or frequency converters proves ineffective and does not allow for distribution of the signal in a SMATV system...>>>more
Triset 302 coaxial cables – class A+, triple shielding
