DIPOL Weekly Review - TV and SAT TV, CCTV, WLAN

No. 12/2013 (March 18, 2013)

CeBIT 2013 – a crisis year?

This year's CeBIT in Hanover, Germany, was held on March 5-9. The fair is the largest and one of the most important events in the global information and communications technology (ICT), organized by Deutsche Messe AG each year in March, since 1986. This year the guest of honor was Poland.
The fair stands and lectures were divided into four major areas: CeBIT gov (technologies for the public sector), CeBIT lab (presentation of the results of research in IT), CeBIT life (services and solutions for households and businesses), and CeBIT pro (advanced ICT solutions for managers in various industries, trade and services).
Despite the well thought out and neatly prepared marketing background, this year's fair cannot be regarded as a breakthrough in any of these areas. It's hard to point out a dominant technology in the near future that would conquer the market of telecommunications and electronics. Contrary to all expectations, it was difficult to find solutions and the range of products associated with LTE technology entering European market as the best and fastest way to deliver wireless Internet. The main theme of the fair, "Shareconomy", understood as a global sharing of knowledge, resources and experience in the business world, was exploited by IT companies operating in the public sector, offering software solutions for cloud computing. However, there were few applications to be run in the cloud and solving more mundane problems of the average consumer.
CeBIT 2013 saw the largest Polish exhibition that has ever been presented to date. The Polish space covered an area of ​​over 3 thousand m2 and was the central part of the fair. In general, there were exhibitors from 70 countries, presenting their products on 4 thousand stands, and visited by 285 thousand people.
Of course, the biggest electronics trade fair in Europe could not miss some technological innovations, but most of them were rather gadgets. There was an exception - a number of 3D printers (see the photo) that can produce a wide range of objects designed by computer users. It seems that the popularity and potential of this type of equipment will be gradually increased. In addition to printers of the future, the visitors could also notice greeting cards equipped with speakers and displays, mobile phones built into gloves, pens translating written texts into 20 languages, or helicopters controlled via smartphones.
The great popularity of the pavilion with stands of the manufacturers associated with computer games
is the typical phenomenon at each CeBIT event

Optical fibers in a multi-story building.

Fiber optics is the future of all telecommunication installations in buildings. In many countries, optical cabling in new buildings is mandatory. The best choice for multi-dwelling units is easy access cable Ultimode BS-12SM L7712 (12 fibers) and Ultimode BS-24SM L7724 (24 fibers). This unique solution allows for convenient distribution of optical fibers to each floor using one riser cable.
Fiber Optic Distribution Cable: ULTIMODE BS-24SM (24xG.652.D, easy access)
Easy access cable ULTIMODE BS-24SM (24x G.652.D)
The diameter of the ULTIMODE BS-24SM cable containing 24 single-mode fibers (G.652.D) is only 10.5 mm. 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.
Our offer includes multiple installation components for easy organization and distribution of the fibers to each of the apartments or offices.
Breakout Unit VertiCASA VQ-BU

Fiber Optic Distribution Box VC-RB (12 splices)

Optical Fiber Distribution Frame: ULTIMODE TB-48B (wall-mounted)
Breakout Unit
Fiber Optic Distribution Box
VC-RB (12 splices)
Optical Fiber Distribution Frame
ULTIMODE TB-48B (wall-mounted)

Digital headend with 29 channels.

Spring is the time of increased preparations for the holiday season in guest houses and hotels. Many investors would like to equip their facilities with LCD televisions with built-in DVB-T tuners. The most suitable antenna systems for such facilities are those distributing all channels in the form of DVB-T multiplexes.
The owner of a renowned hotel in Poland decided to install a SMATV system distributing the available DVB-T multiplexes (a total of 17 TV channels) and 12 satellite SD channels. Due to the high quality, reasonable price and 4-year warranty, he chose TERRA MMH-3000 headend.
The configuration of the MMH-3000 headend for the reception and distribution of 17 DVB-T
and 12 satellite channels (also converted into DVB-T standard)
More on this subject can be found in the article Hotel TV systems - headends and amplifiers
The base unit UC-380 R81700 incorporates power supply, RF amplifier, and intelligent data bus, and is used to hold up to 8 individual modules for reception and processing of digital satellite or terrestrial broadcasts. In the hotel, three CT-311 R81715 modules (one for one multiplex) receive the terrestrial digital television. The TDX-311C R81711C DVB-S/S2 (8PSK/QPSK) module receives and converts the received satellite channels (up to 7-8 SD or 2-3 HD channels from one transponder) into DVB-T mux (COFDM). The TDX-311C module has CI slot which, in the case of encrypted channels, is used to connect a suitable conditional access module with dedicated smart card. Such card usually allows for the decryption of the whole transponder. The tree RDC-311 R817102 satellite receivers and TRX-360 R81709 DVB-T modulator are used to receive and distribute 7-8 SD channels from three different satellite transponders.
The TERRA MMH-3000 headend can be configured in many different ways, depending on the preferences of the investor. The programming can include terrestrial DVB-T and satellite channels from selected satellites and transponders. The flexibility and reliability of the solution are the main reasons for the growing popularity of the headend in hotels, boardinghouses, housing developments.

Long-distance transmission of surveillance video.

The architecture of the video surveillance system shown in the diagram below involves a number of transmission media - UTP cable, fiber-optic cable, and radio waves.
Outdoor Compact Camera: n-cam 670 (day/night, D-WDR, 650TVL, Sony Effio-E, 0.03 lx, 2.8-12mm, OSD, IR up to 30m) Outdoor Compact Camera: n-cam 670 (day/night, D-WDR, 650TVL, Sony Effio-E, 0.03 lx, 2.8-12mm, OSD, IR up to 30m) Outdoor Compact Camera: n-cam 670 (day/night, D-WDR, 650TVL, Sony Effio-E, 0.03 lx, 2.8-12mm, OSD, IR up to 30m) High Speed Dome Camera: PH-33 (3.5-111.5 mm, 540 TVL, Sony Super Had CCD, 0.7 lx)Wireless A/V Transmission System: TCO5807h 5.8GHz (outdoor, 2km)Wireless A/V Transmission System: TCO5807h 5.8GHz (outdoor, 2km)Fiber Optic Video Converter ULTIMODE V-204D (WDM, 4x video, 1x data)Compact Outdoor Camera: n-cam 270 (day/night, D-WDR, 650TVL, Sony Effio-E, ICR, 0.03 lx, 4-9mm, OSD, IR 25m)Fiber Optic Video Converter ULTIMODE V-204D (WDM, 4x video, 1x data)Outdoor Compact Camera: n-cam 670 (day/night, D-WDR, 650TVL, Sony Effio-E, 0.03 lx, 2.8-12mm, OSD, IR up to 30m) Outdoor Compact Camera: n-cam 670 (day/night, D-WDR, 650TVL, Sony Effio-E, 0.03 lx, 2.8-12mm, OSD, IR up to 30m) Video Balun Set: 1VP-C (2 pcs., BNC lead) Video Balun Set: 1VP-C (2 pcs., BNC lead) Compact Outdoor Camera: n-cam 270 (day/night, D-WDR, 650TVL, Sony Effio-E, ICR, 0.03 lx, 4-9mm, OSD, IR 25m)CCTV Network DVR: TREND 260X08 (H.264, 8 channels)4-channel Active Video Balun: Etrix 4VA-R (receiver)4-channel Active Video Balun: Etrix 4VA-R (receiver)
Multiple ways of transmitting signals from CCTV cameras over longer distances
The signals from the M1196 and M11284 cameras (the left side of the diagram) are transmitted over a distance of 20 km via a single-mode fiber. The transmission through the fiber also eliminates the impact of any electromagnetic fields to the quality of the signals. This is highly recommended method of transmission, also over shorter distances, e.g. in factories using machines that emit strong electromagnetic field, such as electric motors.
The signals from the M11284 and M11287 cameras (at the bottom) are sent to the DVR via active video baluns and UTP cables. Thanks to the active receiver Etrix 4VA-R M16745 and active transmitter e.g. Etrix 1AVDA-T M16742, the maximum transmission distance is 2400 meters (the link from the M11287 camera). If the required distance is shorter (below 1500 meters), the active transmitter can be replaced by passive baluns Etrix 1VP-C M16658 (for the two M11284 cameras). In the case of links below 400 meters, it would be sufficient to use passive devices on both sides of the link (pairs of 1VP-C baluns M16658).
The signal from another M11287 camera is transmitted wirelessly at a frequency of 5.8 GHz, over a distance up to 2000 m, using the M1559 wireless A/V transmission system. Of course, it requires line of sight between the antennas.

Discreet IP camera.

Implementing video surveillance systems, many investors pay a lot of attention to the small size of the cameras. Smaller devices can be more easily integrated into the environment, especially in the case of indoor systems. For IP solutions, we can recommend megapixel IP dome camera Sunell SN-IPC54/14EDN K1698 with diameter of 100 mm and height of 53 mm. Its Sony Exmor image sensor with a resolution of 1920 x 1080 pixels can operate without visible light, providing much more detail than CMOS imagers (the camera features ICR filter and High Power Super Flux IR LED, 850 nm, 60-degree angle). The camera is also equipped with 3.6 lens allowing wide viewing angle suitable for monitoring rooms.
Outdoor IP Camera: ACTi TCM-1232 (1.3 Mpx, H.264, IR)
Sunell SN-IPC54/14EDN 2MP IP camera with Exmor imager, supporting ONVIF protocol, diameter of 10 cm - K1698
The K1698 camera displays the video using Flash technology, making it possible to view it without installing any additional plugins. In addition to the free NVMS software supplied with the camera, more advanced applications can be based on NUUO software and NVRs or Signal K4416 NVR.

Choice of equipment in order to meet EIRP compliance.

The regulations do not provide information on the maximum antenna gain. So, why one obeys regulations having an antenna with 15 dBi gain, while another one breaks them using a 10 dBi antenna?
The answer to the question follows directly from regulations concerning maximum level of Effective Isotropic Radiated Power (EIRP). Without a special license, in many countries the maximum EIRP = 100 mW, i.e. 20 dBm in 2.4 GHz band, and 1 W (30 dBm) in 5.47-5.725 GHz band. The same level of EIRP may be accomplished by many means:
EIRP [dB] =
transmitter output power [dBm] - (loss of connectors [dB] + loss of cable [dB]) + ant. gain [dBi]
<= 20 [dBm] (for 2.4 GHz)
<= 30 [dBm] (for 5 GHz)
In order not to exceed the limits of the EIRP, it is necessary to select the appropriate parameters:
  • Tx output power
  • cable type and length
  • antenna gain
It is worth stressing that it is much more advantageous to use a lower power transmitter and an antenna with higher gain than the other way round. From the link balance we know that the desired radiated power level can be achieved in any way, however, the base station is not only the transmitter, but also the receiver. Then, when it receives the signal from a client station, no matter the output power is in the transmitter mode, the only important parameters in receiver mode are the sensitivity of the receiver and the gain of the antenna.

DIPOL partners Digital Park in Wisla.

On Saturday, March 16, three days before analog TV switch-off in the region, Silesian regional authorities and TVP Katowice - local public TV broadcaster - organized in Wisla, a town in the southern Poland, Miastecko Cyfrowe (translation: Digital Park - the website is available in Polish version only), where visitors could learn all about digital terrestrial television. The partner of the event was DIPOL, whose experts answered the questions of the visitors. At the DIPOL's stand the guests could shake hands with the well known DIPOL Singing Robot and pat the new companion - Digital Dog that was able to smell out the DVB-T signals.
The event was covered by the local television TVP Katowice. We will upload a video next week.
In "Digital Park" in Wisla DIPOL presented concepts and devices for reception of DVB-T broadcasts
New products offered by DIPOL:
FME-female Connector (6GHz, crimped on Tri-Lan 240/H-155)
CCTV Network DVR: SIGNAL DL-8508 (8ch-WD1-25fps)
SIGNAL 19" Rack Cabinet
(18U 600 mm, hanging)
FME-female Connector
(6GHz, crimped on H-155)
CCTV Network DVR
SIGNAL DL-8508, 8ch, WD1
Worth reading:
Optical fiber termination in subscribers' premises. A properly made connection is shown in the figure below. The optical fiber termination box ULTIMODE TB-02H L5302 is used for protection of optical line terminations at subscribers' premises. In the example, one fiber from the Ultimode BS-12SM L7712 easy access cable has been run to the premises of the end user (home, office etc.) inside drop/distribution tube VC-TUB L7211. The box holds spare fiber and secures mechanical splice ULTIMODE MS-1 L5550. The SC connector of the L3551pigtail has been inserted into L4211 adapter, placed in the suitable hole in the box. This way, the termination is fully protected from accidental damage... more
Termination of a single-mode fiber extracted from easy access cable Ultimode BS L7712

How to combine DVB-S and DVB-T signals? Many owners of one-family homes prefer antenna installations that distribute terrestrial and satellite TV signals via a single cable. The best solution is to combine the signals from the receiving antennas at the input of the RF distribution system which usually feeds several outlets located in different rooms. Despite the fact that these signals are transmitted in different bands, they cannot be combined using simple RF splitters/combiners... more
An example of a small antenna system distributing signals to three outlets

Sharing ADSL connection with the use of a TP-LINK router. It is one of the most popular ways to distribute Internet within the home, as most home users are connected to the Internet through ADSL lines (Asymmetric Digital Subscriber Line). The suitable wireless router is e.g. TD-W8960N N2904 with integrated ADSL/ADSL2/ADSL2+ modem, 4-port switch, and IEEE802.11b/g/n access point. Its WAN port (R11) should be connected directly to the phone line.
An example of a computer network based on ADSL connection in a single family home,
with distribution of the Internet connection via TP-LINK TD-W8960N N2904 wireless router
Mobile Sat Dish: Camping 35 (offset)