Můj košík je prázdný



DIPOL Weekly Review – TV and SAT TV, CCTV, WLAN
No. 32/2020 (12.10.2020)
Graphene supercapacitors in electric vehicles. Skeleton Technololgies, an Estonian manufacturer of graphene supercapacitors, is working with the German Institute of Technology in Karlsruhe (KIT) to develop advanced graphene capacitors which can be charged in 15 seconds. The company plans to use them as an addition to drivetrains of electric, hybrid and fuel cell powered vehicles.
The combination of Li-Ion batteries and supercapacitors in electric vehicles will draw from the benefits of both energy storage methods. Supercapacitors withstand a huge number of charge and discharge cycles and can quickly absorb and deliver high power. The lithium-ion batteries, however, offer a better energy storage capacity, expressed as energy density, i.e. the amount of Wh generated per kg of battery weight, which is an order of magnitude better. Batteries must therefore remain the primary energy storage, and graphene capacitors will be used to generate high power during acceleration and to recuperate energy from braking. As a result, the batteries can be smaller and their service life will be significantly improved due to fewer charging cycles and reduced power output. According to the research, the batteries supported with capacitors are estimated to last up to 50% longer, and their cooling system can be significantly reduced.
The company already uses graphene supercapacitors in goods transport, where they play the role of the KERS (Kinetic Energy Recovery System), i.e. they recuperate the kinetic energy of the vehicle lost during braking, and reuse it for acceleration. In real use, the installation of a 400 Wh supercapacitor in a 10-ton truck reduced its fuel consumption by approximately 30%.
Skeleton supercapacitors are made in a patented process, with the electrodes based on a proprietary, inorganic graphene structure. The use of this material increases a cell capacity by 40% compared to the competitive products. This solution has gained great recognition among vehicle manufacturers. The manufacturer has already signed a letter of intent with leading automotive concerns who have supported the idea financially. We are hoping for a further successful evolution of the capacitors to replace the "slow" batteries.
Winners of the 19th edition of DIPOL photo contest!! We thank all the participants for almost 400 photos they have sent us. We received a lot of photographs representing the highest level of art, thus making the award decision particularly difficult. Congratulations to the winners and honored participants – you have once again proved that such inconspicuous and seemingly common objects as antennas can be inspirations for creating truly artistic works.
All works received can be seen here.
1st prize - Samotność (loneliness) – Sebastian Szostek
2nd prize - Step by step – Ferenc Mészáros
3rd prize - A teraz dobrze? (Is it good now?) – Róża Szerement
Zbliżająca się burza
Kondrad Kiryła
Maciej Wiśniewski
Ptasie radio
Jerzy Zborucki
Mocny punkt obrazu, dobry punkt odbioru
Krzysztof Kucharski
Po sąsiedzku
Patryk Kos
Aleksandra Wilczyńska
Karolina Jędrasik
Wybierz kształt
niepasujący do reszty
Karolina Jędrasik
Wschód słońca
Piotr Piznal
Wśród błękitu
Pod żaglami
Elżbieta Bąkowska
W cieniu
Anteny w krzywym zwierciadle
Leszek Grygorczuk
Rafał Korban
Marek Jóźków
New software version for the WS-6980 Signal meter. A dedicated TV signal meter is required to measure the parameters of the satellite, terrestrial and cable TV signals. Without such a meter, it would not be possible to quickly and accurately position a satellite dish or find the proper orientation of a terrestrial TV antenna, making it very hard to set up the whole TV/SAT system properly. The WS-6980 R10837 measures satellite DVB-S/DVB-S2 (HD), terrestrial DVB-T/DVB-T2 (HD) and cable DVB-C signals. Thanks to a built-in receiver, the user can monitor the currently tested channel. The monitoring of the tested channels and intuitive operation accelerate installation work. The device measures such parameters as signal level expressed in dBμV, C/N and MER parameters, so accurate setting of individual system components (dish, LNB) and, in the case of more complex systems, multiswitches and amplifiers, poses no problem at all.
Professional digital TV & SAT analyzer Rover Scout ST2+
A new release of the software for the WS-6980 R10837 meter is now available on the DIPOL server, in the "Downloads" tab of the product data sheet. Download the file from the server, unpack it and save on a USB memory stick. Plug the USB stick in to the meter. In the device menu, select: System settings -> Update. Then, select: Restore to factory defaults (absolutely necessary!). The latest software can be uploaded to WS-6980 meters which currently run a version that is not older than the S/W Version: S2+T2+C 2201XXX. The new software has been modified and adapted to the needs of installers in response to a number of requests. After the update, if you select a satellite and a transponder (the DVB-S/S2 signal) or terrestrial TV channel (the DVB-T/T2 signal), the meter will remember the last parameters measured by the user. This is quite useful because, if you turn the meter off and then back on, or perform another operation in the menu, there is no need to repeat the last configuration.
Calibration of optical power meters – certificates. The optical power meter, like most measuring devices, performs measurements with certain uncertainty. Its value is usually given in the meter data sheet and confirmed with the attached certificate.
In the case of most cheaper optical meters, the certificate has no formal power and represents a mere declaration concerning the final quality of the product. The document is issued by the manufacturer, who is also the party responsible for the process of measurement and calibration. The latter is not required to conform to any specific standards and the calibration instruments used do not need to have the status of reference devices. In many cases, however, such a basic certificate is sufficient to confirm that the measurements will be reliable.
A basic calibration certificate issued by an optical power meter producer
Installers who require a higher-level certificate should choose products compliant with the ISO9001 and IEC17025 standards. In this case, relevant certificates can only be issued by producers who follow procedures specified in the ISO9001 quality management standard, or, better yet, by an external lab that has implemented the IEC 17025 guidelines.
The highest level of certification is offered by an accredited lab. Several dozen IEC 17025 accredited labs around the world perform calibration based on rigorous procedures defined in the European IEC 61365 standard or an American equivalent, i.e. TIA-455-221/FOTP-231. Meters with such certificates are top-quality devices, which, provided that full compliance with relevant standards is ensured, can serve as a reference device for the calibration of other instruments.
The two best known labs used by renowned measuring equipment producers are the American N.I.S.T (National Institute of Standard and Technology) and the Australian NMI (National Measurement Institute). In Poland, calibration can be performed at the LMEEiO (Laboratory of Electrical, Electronic, and Optoelectronic Metrology) in Warsaw. The institution is accredited by the Polish Center for Accreditation (PCA) and can calibrate any optical power meter.
It is worth noting that even if the device purchased does not have a certificate issued by an accredited laboratory, the user can request such an institution for calibration. This is a paid service (you pay for each wavelength for which the procedure is performed). Note, however, that the laboratory performs only the calibration, not the adjustment. The user will receive a confirmation that the device is capable of measuring with a certain deviation from the standard. This deviation must be taken into account in the measurements, unless the meter has a manual calibration function. Then the errors indicated by the laboratory can be corrected. A meter calibrated that way can be used to perform any measurements and create any measurement documentation.
Optical Power Meter: TM503N
The TM503N L5816 meter can be calibrated manually, which, together with calibration at an accredited lab, ensures the highest measurement accuracy (the lowest uncertainty).
Sample image from the bispectral Hikvision camera. DS-2TD2617-3/V1 is a bispectral IP camera manufactured by Hikvision, which combines the advantages of traditional and thermal imaging monitoring. It has with two image sensors, the first CMOS for visible light with a resolution of 1920 x 1080 px, the second, thermal imaging sensor with a resolution of 160 x 120 px. The camera can create image fusion, i.e. combine a visible image with an infrared image to achieve a quality thermal presentation. The snapshots shown below are taken with the Picture-in-Picture function turned on, with "Image Fusion Ratio" set to 80 and "Border Fusion Ratio" to 73 for the image overlay details. Moreover, the "Hot white" and "Fusion 1" color ranges have been selected in the "Display settings" tab.
Image in the "White Hot" palette
Image in the "Fusion 1" palette
A bispectral camera is a perfect complement to visual monitoring operating in the range of visible light and reflected infrared. Analog or IP CCTV cameras enable the correct identification and recognition of people during the day and at night when using an infrared illuminator. The thermal imaging camera does not need any illumination to work properly. Its operating principle is completely different from traditional cameras. Any object with a temperature above absolute zero (0 K = −273.15°C) emits infrared rays. Due to the relationship between the temperature and the intensity of radiation, the thermal imaging camera, which receives infrared waves, calculates the temperature value based on their length. The combination of the vision and thermal imaging modules in one camera enables creating the image fusion and obtaining the resulting thermal image of a better quality.
Basics of IP addressing – part 3. In the previous issue, the subnet mask was discussed. In the third part, details on the calculation of the network and host address (IPv4) based on the network mask will be discussed. The mask determines how many subsequent bits in the IP address form the network address. The remaining bits, however, specify the addresses of a particular host in the network (end device address). Where the bit in the mask is set to 1, the corresponding bit of the IP address belongs to the network address, and when it equals 0, the corresponding bit of the IP address belongs to the host address.
The subnet mask bits are always set to 1, starting with the most significant bit (commonly the oldest), for example:
IPv4 address: = 11000000.10101000.00001010.01101111
subnet mask: = 11111111.11111111.11111111.00000000
As seen in this case, the network address is:
network address = 11000000.10101000.00001010.00000000

Example of calculating the network and broadcast addresses.
While calculating a network address, and when the device IP address and mask, are available, the AND function should be applied (the result contains one when there is one in both strings):
IP address: in binary notation: 11000000.10101000.00001011.10111101
Mask: in binary notation: 11111111.11111111.11111111.10000000
Result of AND operation in binary notation: 11000000.10101000.00001011.10000000
The result of the AND function is the network address which, after conversion to decimal, has the form:
Knowing the subnet address, the broadcast address can be easily calculated. To this end, the mask bit negation is used, and the resulting number is added to the network address:
 Binary Decimal
NOT operation000000000000000000000000011111110.0.0.127

Every octet has to be added to its corresponding octet of the network address. Since the first 3 octets are 0, just the last one is added: 128+127=255. The broadcast address sought in this network is therefore:

The ability to calculate addresses is useful, for example, when the provider assigns a pool of IP addresses to the user. The provider rarely provides a list with the specified host, network or broadcast addresses. Only the network address and mask is specified in the provider documentation. For example, a user is notified of being given the addressing (the /29 means the mask The user has to calculate that the network address is, the host addresses are from to and the broadcast address is
The network gateway will discussed in detail in the following issue of this Weekly Review.
Deep learning in Hikvision monitoring systems. The DeepinView (cameras) and DeepinMind (DVRs) systems represent the top level of image analysis based on deep learning algorithms. They reflect the structure and principles of the human brain. As in the brain, learning creates connections between artificial neurons (programs) and creates a multi-layer artificial neural network. The algorithm individually analyzes model photos and recordings, looking for common features, and then creates appropriate connections. The so-called layers, responsible for detecting a specific feature, are built this way. The more layers an algorithm has, the more accurate the analysis is. Therefore, teaching with large amounts of data is crucial.
Only multi-layer networks can collect information and perform appropriate actions, in particular automatic extraction and representation of features (patterns) present in the data, teaching the network for example to recognize faces, vehicle brands, animal species or incident, e.g. a fall.
A trained algorithm is used for video analysis. The supported functions include detection and recognition of faces, animal species, vehicle brands, number plate recognition (ANPR), line crossing, intrusion, region entry and exit (perimeter protection based on target detection and classification), people counting, detection of human fall, fight, fire, etc.
Compact IP Camera: Hikvision DS-2CD7A46G0-IZS (4MP, 2.8–12mm Motozoom, 0.002 lx, IR up to 50m, WDR, IK10, H.265, DeepinView)
4K IP NVR: Hikvision DS-7632NI-I2 (32ch, 256Mbps, 2xSATA, Alarm IN/OUT, VGA, HDMI)
Hikvision DS-2CD7A46G0-IZS
K05912 IP camera
Hikvision iDS-9632NXI-I8/4F
K22359 DVR
New products offered by DIPOL
Multiband Amplifier: WWK ALPHA TELMOR
WWK ALPHA TELMOR multiband amplifier+ R89863 is dedicated to difficult reception conditions with signals of various levels, transmitted from several directions. It has 4 programmable signal inputs for the VHF (174-240 MHz)/UHF (470-862 MHz) band, 1 for the FM band (88-108 MHz) and 1 AUX input (broadband), supporting 32 channels paths. The amplifier enables the reception, equalization and amplification of those signals.
Access point: TP-LINK TL-WA1201ND 1200MBps
TP-LINK TL-WA1201 1200Mbps access point N2943 is a device operating in the 802.11 ac/n/b/g standard, with a large number of functions and modes: AP, AP Client, Repeater, Bridge (Point to Point, Point to Multipoint). The Access Point has useful functions suitable for application in small cells of WLAN. Thanks to WPA/WPA2, WPA-PSK/WPA2-PSK, TKIP/AES encryption and filtering of MAC addresses, the device ensures high security levels.

IP Intercom Station: Hikvision DS-KV8413-WME1/Flush Villa 2 gen (4-subscriber, RFID, WiFi, flush mounted)
DS-KV8413-WME1 Vila 2 gen. (4-subscriber, RFID, WiFi, flush mounted) Hikvision G73645 IP door/gate station dedicated for second generation Hikvision IP video intercom systems. Attractive design and great functionality make this station ideally suited to the construction of single-family houses. Built-in color camera with a resolution of 2 MP with wide viewing angles (129° (H)/75° (V)) and an IR illuminator with the range of 3 m, ensures proper area observation round the clock. Built-in Mifare (13.56 MHz) transponder reader allows for door opening with cards or key rings.

Worth reading
Hik-ProConnect – cloud service for installers and integrators of Hikvision systems. Hik-ProConnect is a state-of-the-art cloud-based platform intended for installers and integrators of Hikvision systems. It is used for remote management and supervision of security systems connected to the Hik-Connect service. CCTV and alarm systems, video intercoms, access control and other IoT devices (e.g. wireless bells) are compatible with Hik-ProConnect...>>>more
Hik-ProConnect system structure
Hotel TV – SMATV, CATV signal headend
TV SAT solutions for hotels
Osoby mající zájem o zasílání týdenního Newsletter elektronickou poštou, prosímme, uveďte svůj e-mail: