SignalNET - telecommunications and RF distribution systems in multi-dwelling units

Modern concepts of implementing integrated telecommunications and RF distribution systems in multifamily buildings
The latest regulations in Poland concerning signal distribution systems in multi-dwelling units and public buildings specify more precisely requirements for cabling systems being deployed in new buildings. The purpose of the requirements is to unify the provision of services for every user by allowing access to broadband Internet, terrestrial and satellite television, telephony etc. - not restricted to one operator or technology.
Similar requirements are or will be compulsory in many countries, so that the investors must take them into consideration. Even if such regulations have not been passed yet, the fulfillment of the recommendations will make the buildings more attractive for the customers/residents.
The main requirements include:
1) installation of fiber-optic system consisting of optical distribution frame located in a technical room and cabling (at least two fibers provided to each apartment)
FTTH (Fiber-To-The-Home) technology greatly improves the quality of broadband services, in particular allows the users faster data transmission rates, especially important for streaming HD video; the medium is also much safer for the users' equipment - no surge voltages.
2) installation of RF system for reception and distribution of digital terrestrial television and radio (DVB-T, DAB), as well as digital satellite television from two satellite positions; the system should include coaxial cabling and installation components: master antennas and dishes, splitters, taps, amplifiers, multiswitches.
The optimal solution is to combine both installations into one multiswitch system that, using one coaxial cable, provides all the signals to each apartment. Thanks to this solution, the residents are not forced to pay for services of cable TV operator - they can receive free DVB-T broadcasts, FTA and pay TV satellite channels.
A very important fact is that residents of buildings without multiswitch systems had to mount their own satellite dishes (in Poland about 50% TV viewers have been using satellite receivers) on balconies and facades of buildings, which spoiled the overall aesthetics of the buildings. People having apartments only on north and west sides of the buildings were deprived of access to satellite signals from Polish operators. Multiswitch systems eliminate such problems.
3) additional coaxial cable that can provide signals/services from a cable TV operator, or independent SAT TV and DVB-T signals.
4) structural cabling based on two UTP cables led to each apartment providing access to the Internet, intercom connectivity etc.
5) installation box located in each apartment near the entrance door, with terminations of all cables and additional equipment such as RF splitter, Ethernet switch etc. The services are then provided to outlets in the apartment.
6) separated technical room containing distribution frame and cross connection box allowing for connecting any subscriber to the infrastructure of any service provider operating in the area.
Table with lists of devices and compliance declarations
Codes Names Declaration PL Declaration EN
R70858, R70862, R70866,
R70874, R70882
Multiswitches of MV-9XXL series
R70901, R70911 Amplifiers of SA-91L series
R70524R70525R70526 Taps of SD-9XX series
R70526R70529 Splitters of SD-9XX series
R48602R48606 Signal protectors

 

SMATV system
Master antennas
Terrestrial
  • antenna set: FM 87.5 – 108 MHz, VHF/DAB 174 – 230 MHz, UHF 470 – 862 MHz (min. gain 14 dBi)
A0221 A0140 A2670
FM VHF/DAB UHF
Dipol 1RUZ PMB Dipol-4/DAB Dipol Tri-Digit
A0221 A0140 A2670
Satellite
  • parabolic or offset dish with at least 1.20 m diameter
A9670 A9648 A9649
Sat dish
Sat dish Sat dish
Laminas OFC-1200P IDLB-STCF 120 cm INVERTO [light color] IDLB-STCF 120 cm INVERTO [dark color]
A9670 A9648 A9649
Devices

SMATV system should receive channels at least from two satellite positions, all components must be compliant with class A screening efficiency.

For applications in multi-dwelling units, DIPOL recommends renowned TERRA multiswitch solutions. They are widely used in Great Britain, Germany, Australia, Poland. There are thousands of implementations worldwide, with many, many thousands of satisfied users.
Multiswitches
Multiswitches are the flagship products of TERRA company. Due to excellent scalability, they can be used both for implementations of small and very large systems, up to 2,000 outlets. Systems with hundreds of outlets can be powered from only one AC power outlet. The concept of the large systems is based on signal bus and division into subnetworks with MV-9XXL multiswitches.
Active of terrestrial TV path. Possibility to adjust the gain of the terrestrial TV path and the SAT path for two satellite positions (separately for each of the 8 pairs of IF polarization-band signals).
Below the technical data for MV-908L R70858, MV-912L R70862 and MV-916L R70866 multiswitches is presented.
   R70858 R70862  R70866
Name  MV-908L  MV-912L  MV-916L
Code R70858 R70862 R70866
Number of inputs 9 9 9
No. of outputs 8 12 16
Frequency band [MHz] SAT 950 – 2400
DVB-T/Radio 47 – 790
Gain (pre-correction
cable attenuation curves) [dB]
SAT out 1-16 3...8
DVB-T/Radio wyj.1-8 4...7
out 9-12   3...5
out 13-16   2...3
Gain control [dB] SAT 12, 4 dB step
DVB-T/Radio 15, 1 dB step
Max. SAT signal level (IMD3=35 dB)* [dBμV] 93
Max. signal level of terrestrial TV (IMD3=60 dB)*[dBμV] out 1-8 85
out 9-12   83
out 13-16   83
Input separation SAT [dB] > 30
Output separation [dB]  SAT > 30
 DVB-T > 30
Receiver current consumption [mA] < 60
Maximum current consumption from H line and external power source 12 V ... 18 V < 160 mA at 18 V
Control signals 14/18 V, 0/22 kHz, tone burst
lub DiSEqC 1.0, DiSEqC 2.0 or compatible versions
DC pass through the connector "AUX18 V" 18 V 1 A max.
Operating ambient temperature range [°C] -20...+50
Dimensions [mm] 187x135x30 227x135x30 267x135x30
Weight [kg] 1.26 1.26 1.26
TERRA's MV series of multiswitches models offered include also: MV-924L R70874 and MV-932L R70882
  R70874 https://static.dipol.com.pl/images/pict/r70882l_.gif
Name MV-924L MV-932L
Code R70874 R70882
Number of inputs 9 9
No. of outputs 24 32
Frequency band [MHz] SAT 950 – 2400
DVB-T/Radio 47 – 790
Gain (pre-correction
cable attenuation curves) [dB]
SAT out 1-16 2...7
out 17-32 1...5
DVB-T/Radio wyj.1-8 4...7
out 9-16 3...5
out 17-24 2...3
out 25-32 - 1...1
Gain control [dB] SAT 12, 4 dB step
DVB-T/Radio 15, 1 dB step
Max. SAT signal level (IMD3=35 dB)* [dBμV] 93
Max. signal level of terrestrial TV (IMD3=60 dB)*[dBμV] out 1-8 85
out 9-16 83
out 17-24 81
out 25-32 - 79
Input separation SAT [dB] > 30
Output separation [dB] SAT band > 30
DVB-T band > 30
Receiver current consumption [mA] < 60
Maksymalny pobór prądu z linii H
oraz zewnętrznego źródła zasilania
12 V ... 18 V < 160 mA at 18 V
DC pass through the connector "AUX18 V" 18 V 1 A max.
Control signals 14/18 V, 0/22 kHz, tone burst lub DiSEqC 1.0, DiSEqC 2.0 lub kompatybilne wersje
Operating ambient temperature range [°C] -20...+50
Dimensions [mm] 227x135x30 267x135x50
Weight [kg] 1.42 1.86
Amplifiers
The use of amplifiers SA-91L/91DL allows you to build extensive multiswitch systems with up to several hundred outlets. Signal level control with switches ensures stability of parameters over time. The die-cast housing provides high screening efficiency preventing the penetration of interfering signals inside the device.
  R70901 R70911
Name SA-91L SA-91LD
Code R70901 R70911
Frequency band [MHz] SAT 950 – 2400
DVB-T/Radio 47 – 790
Gain [dB] SAT 22
DVB-T/Radio 22
Gain control [dB] SAT 0. -15, 1 dB step
DVB-T/Radio 0. -15, 1 dB step
Correction for cable attenuation pattern [db] SAT 0/3/5/7
DVB-T/Radio 0/6/12/18
Separation [dB] SAT/SAT 30
SAT/DVB-T 30
Inner noise [dB] < 9
Max. signal level of terrestrial TV (IMD3=60 dB)****[dBμV] 109
Max. SAT signal level (IMD3=35 dB)**** [dBμV] 114
Power supply for other devices signal path V 14 V 0.5 A max. (switch) -
signal path H 18 V 1.8 A* max. (switch) -
terrestrial TV path 12 V 0.1 A* max. (switch) -
DC transition in sig. path. H 2 A* max.
Power consumption 230 VAC 50/ 60 Hz 7 W** 9-18 VDC 5 W***
Operating ambient temperature range [°C] -20...+50
Dimensions [mm]  335x135x52 255x135x32
Weight [kg] 1.18 0.9
Taps
Taps are used in multiswitch systems, to separate signals from the multiswitch bus (2x4 SAT +1 TV cable) for the multiswitch subnetwork. The molded housing provides excellent screening over the entire range of transmitted frequencies.
  https://static.dipol.com.pl/images/pict/r70524l_.gif R70525 R70526
Name SD-910 SD-915 SD-920
Code R70524 R70525 R70526
Frequency band [MHz] SAT 950 – 2400
DVB-T/Radio 5 – 862
Pass loss [dB] SAT 1.7 1.2 0.9
DVB-T/Radio 1.6 1.2 1.0
Tap loss [dB] SAT 8...12 13...17 18...22
DVB-T/Radio 10 15 20
Input separation [dB] SAT/SAT 30
DVB-T/SAT 30
DC pass-through 2 A max. 
Operating ambient temperature range [°C] -20...50
Dimensions [mm] 120x120x51
Weight [kg] 0.9
Splitters
Splitters are used in multiswitch systems, to split the signal from the multiswitch bus. The bus with the signal from two Quatro LNBs consists of eight cables. In addition, the splitter divides, also the terrestrial TV signal. The molded housing provides excellent screening over the entire range of transmitted frequencies.
   https://static.dipol.com.pl/images/pict/r70523l_.gif  R70529
Name SD-904 SDQ-908
Code R70523 R70529
Inputs/outputs 9/18 9/36
Frequency band [MHz] SAT 950 – 2400
DVB-T/Radio 5 – 862
Pass loss [dB] SAT 4 8
DVB-T/Radio 4 8
Tap loss [dB] SAT 4 8
DVB-T/Radio 4 8
Input separation [dB] SAT/SAT 30
DVB-T/SAT 30
DC pass-through 2 A max. 
Operating ambient temperature range [°C] -20...50
Dimensions [mm] 120x120x51  254x120x51
Weight [kg] 0.9 1.4
Surge protection
Regulation of the Ministry of the Interior and Administration of November 6, 2012 specifies the following requirements against surges in telecom systems of residential buildings:
  • Telecommunication systems shall be equipped with surge protection devices, and, when the system may be exposed to overcurrent, also with overcurrent protection devices, while the elements of the system extending above the roof shall be placed in the zone protected by the lightning protection system referred to in § 184 (3), or directly grounded in the absence of a lightning protection system. Antenna systems extending above the roof and longer runs of antenna systems in buildings (exceeding 10 m) should be protected by surge protectors from direct and indirect discharges.
Signal surge protection box R48606 has been designed for comprehensive protection of SMATV systems based on multiswitches. The device protects the system against voltage surges induced in signal lines by lightning strokes.
TV-Sat Surge Protector: SIGNAL (F-plug/F-socket)
The box has been equipped with 12 Signal TV-Sat surge protectors R48602 that can protect:
  • 2 multiswitch satellite paths (8 cables in total - 4 polarization-band pairs for each satellite),
  • 2 radio paths (FM, DAB),
  • 2 DVB-T terrestrial TV paths (UHF1, UHF2).
Cabling
Regulation of the Ministry of the Interior and Administration of November 6, 2012 specifies the following requirements for coaxial cables in telecommunications systems of residential buildings:
  • cable of category RG-6 or higher, class A, containing double screening – aluminum foil and braid with a density of at least 77%, and copper inner conductor with a diameter of not less than 1 millimeter. One cable from the multiswitch (FM+DVB-T+SAT signal) and another from the multiswitch or cable network equipment is to be routed to each subscriber box.
Coaxial Cable (75 ohm, class A): TRISET-113 1.13/4.8/6.8 [100m]
TRISET-113 1.13/4.8/6.8 class A 75 ohm coaxial cable E1015_100.
Requirements Triset-113 specifications
Category RG-6 or higher Triset-113 cables are RG-6
category products with improved performance
Double shield:
aluminium foil + ≥ 77% density braid
Double shield:
aluminium foil + ≥ 81% density braid
Cooper inner conductor
with at least 1 mm diameter
 Cooper conductor with a diameter of 1.13 mm
Class A Screening efficiency
0.03...1 GHz ≥ 85 dB
1...2 GHz ≥ 75 dB
2...3 GHz ≥ 65 dB
Screening efficiency
0.03...1 GHz ≥ 90 dB
1...2 GHz ≥ 90 dB
2...3 GHz ≥ 85 dB
 Transfer impedance < 5 mΩ/m  Transfer impedance < 4.6 mΩ/m
Coaxial Cable (75 ohm, class A): DIPOLNET Tri-Shield RG-6 Cu Eca Class A+ 1.02/4.8/7.0 [300m]
Coaxial cable Tri-Shield DIPOLNET class A 1.02/4.8/7.0 75 Om RG-6 Cu E1220_500.
Requirements DIPOLNET specification
Category RG-6 or higher The DIPOLNET family cable is the
RG-6 category cable
Double shield:
- Al foil
- ≥ 77% density braid
Triple shield:
- AI foil
- 77% braid
- Al foil
Cooper inner conductor
with at least 1 mm diameter
 Cooper conductor with a diameter of 1.02 mm
Class A Screening efficiency
0.03...1 GHz ≥ 85 dB
1...2 GHz ≥ 75 dB
2...3 GHz ≥ 65 dB
Screening efficiency
0.03...1 GHz ≥ 89 dB
1...2 GHz ≥ 90 dB
2...3 GHz ≥ 89 dB
 Transfer impedance < 5 mΩ/m  Transfer impedance 2.5 mΩ/m
One of the coaxial cables brought to the telecom subscriber box can be used for the provision of services by cable TV operators. Due to the fact that cable networks also use coaxial cables for the transmission of Internet services using the band of the so-called return channel (frequencies of 5...65 MHz), we recommend the use of cables with increased screening efficiency in the return channel band, such as Triset-PROFI E1010 (screening in the bands 30-1000MHz >110dB - class A++).
Coaxial Cable (75 ohm): TRISET PROFI Eca Class A++ 1,13/4,80/6,90 120dB [100m]
75 ohm coaxial cable TRISET PROFI 120 dB class A++ E1010. The tinned cooper braid is resistant to oxidation/corrosion, which increases the durability of the cable compared with aluminum solutions. The average screening efficiency of 120 dB and transfer impedance below 0.9 mΩ/m make it ideal for applications in digital CATV networks.
Requirements Triset PROFI specifications
Category RG-6 or higher Triset cables are RG-6
category products with improved performance
Double shield:
aluminium foil + ≥ 77% density braid
Triple shield:
Al/PET/SY foil (first) bonded to the dielectric + 83% density, braid + Al/PET foil (second) bonded to the sheath
Cooper inner conductor
with at least 1 mm diameter
 Cooper conductor with a diameter of 1.13 mm
Class A Screening efficiency
0.03...1 GHz ≥ 85 dB
1...2 GHz ≥ 75 dB
2...3 GHz ≥ 65 dB
Class A++ Min. screening efficiency
0.03...1 GHz > 105 dB
1...2 GHz > 105 dB
2...3 GHz > 105 dB
Average screening efficiency
0.03...2.4 GHz 120 dB
Transfer impedance < 5 mΩ/m Transfer impedance < 0.9 mΩ/m
Recommended article from the Library:
Fiber-optic system
Requirements for the system:
  • the core of the system in any building is technical room containing distribution frame and cross connection box allowing for connecting any subscriber to the infrastructure of any service provider operating in the area
Cabling
  • the fiber distribution frame connected with the service providers is linked to each subscriber outlet or fiber terminations via at least two single-mode fibers with minimum parameters given in the table:
attenuation at λ =1310..1625 nm ≤ 0.4 dB/km
attenuation at λ =1550 nm ≤ 0.25 dB/km
chromatic dispersion coefficient D ≤ 0.092 ps/nm2*km
nominal mode field diameter 8.6 to 9.5 μm
cut-off wavelength ≤  1260 nm
loss of 100 turns of fiber (60 mm in diameter, at 1625 nm) ≤ 0.1dB
These parameters are met by single-mode G.652.D fibers. Of course, they are also fulfilled by the G.657.A1/A2 fibers with reduced minimum bending radius.
The requirements are met by the cables below:
 
Code L7812 L76004 L7102
Name Ultimode-BS Ultimode-UNI Ultimode-LB
Number of fibers 12, 24, 48 4, 8, 12 2, 4
Applications ideal for multi-storey buildings indoor/
outdoor
indoor
The main criterion in selecting fiber optic cabling for a building system is the topology of the system on which the network will be built. There are two dominant trends - systems based on the so-called. easy access cable and star systems, in which the L7102 2-fiber flat cable, ideal for FTTH technology, is most often used. The choice of the type of topology is usually determined by the number of apartments in each block and on each floor.
Distribution frames/boxes
The basic criterion for the selection of a distribution frame/box is the way mounting, on a wall or inside a rack cabinet. Of course, the enclosure must have suitable capacity depending on the number of terminated fibers and other network components. For use in apartment buildings, the most popular models of distribution frames/boxes can accommodate from 12 to 72 fibers.
 
Code L5124 L5224 L5448
Name ULTIMODE MT-5xx ULTIMODE MT-6xx Ultimode-LB
Number of fibers
12, 24, 48 24, 48, 72 48
Mounting RACK RACK Wall
  • the system uses single-mode SC/APC connectors
All distribution frames/boxes should be equipped with SC/APC adapters for connecting pigtails. A good practice is to use the same type of fibers throughout the whole network.
L3552 L5712 L4222
PG-52S ULTIMODE FAST-05SC/APC A-522S
pigtail (thermal splicing) SC/APC (mechanical splicing) adapter for installation boxes etc.
  • the attenuation of the optical link from the distribution frame to any outlet or fiber termination cannot exceed 1.2 dB (at 1310 nm and 1550 nm)
  • any places with cable terminations should have appropriate warning signs about hazards of invisible optical radiation
Splitters
When the designer plans services provided via xPON technology, the distribution frames should have place for optical splitters. Optical splitters, similarly to RF splitters, divide the transmission paths to several sub-paths. Commercially available splitters enable the division into up to 32 branches.
The view of the SO-4-7A L36041 splitter (1:4)
Other Ultimode splitters:
Installation boxes
In the case of termination/subscriber boxes, the very important issue is the security of the installers and users - the connectors have to be covered or directed downward.
Termination Box ULTIMODE TB-05W (complementary to TB-01W, TB-02W plates)
Front Plate ULTIMODE TB-02W (1xSC duplex)
Termination Box ULTIMODE TB-05W L53005 and complementary TB-02W plate L53002
Optical Fiber Termination Box ULTIMODE TB-02H-2 (indoor, wall-mounted)
Optical Fiber Termination Box ULTIMODE TB-02H-2 L53022
LAN cabling
Requirements for the system:
  • telecommunications box in each apartment has to be connected with the technical room at least with two UTP cables, Cat 5e or higher
   
Name NETSET UTP cat. 5e
Code E1408
Standards IEC 61156-6 (2000)
ISO/IEC 11801 (2000) TIA/EIA-568-A (1995)
PN/EN 50173 (1999)
yd/t1019-2001
Certificate Download
  • the transmission paths have to be compliant with class D (IP multicast)
  • one of the links is to be used by a provider of telecommunications services, the second for the implementation of intercom system, doorbell etc.
Telecommunication junction boxes
  • Telecommunication boxes are usually located near the entrances to apartments and contain terminations of cables, active and passive components, and, if needed, AC power outlet. The signals provided to the boxes are further distributed in the apartments.

Examples of modern telecommunications systems
An example of practical implementation of fiber-optic system in a multistory building
Multistory residential building equipped with fiber-optic installation
Click on to download pdf version (1.08 MB)
In the example, the building has 5 floors with 3 apartments on each floor. According to the requirements specified above, the installation contains 30 fibers, with two terminations in each apartment.
The technical room houses RACK cabinet R912012 with two fiber optic boxes ULTIMODE MT-524 L5124 with front panels L5541. The boxes can accommodate up to 48 SC/APC adapters L4222. The optical cables to the subscribers are distributed from the rear of the cabinet - they are welded with SC/APC L3552 pigtails placed inside the boxes.
The apartments are connected with the technical room via fibers of ULTIMODE BS easy access cables. The apartments on the first (ground) floor are connected by the fibers of the BS-12SM L7812 cable composed of 12 fibers, on the higher floors - of the BS-24SM L7824 cable composed of 24 fibers. On each floor, 6 fibers are extracted from the cable after cutting suitable window with special stripping tool L5911. The windows are protected by breakout units VC-CPC L5350, specially designed for easy access cables. Each pair of the fibers going to an apartment is protected by drop/distribution tube VC-TUB L7211.
In each apartment the fibers can be terminated in several ways, either in the case of using termination box or outlet. The best solution seems to be a small termination box housing the fibers terminated in a way that will not require the user to engage a professional service to splice them for the future use. It may be termination box ULTIMODE TB-02H L5302 containing spare lengths of the fibers, spliced with SC/APC L3552 pigtails terminated with L4222 adapters.
An example of practical implementation of SMATV system in a multistory building
Considering the number of outlets and their layout in a building, we can distinguish two main cases. In the case where the total number of outlets within a single subnet (usually encompassing apartments in one staircase) is relatively large (above 32), a good solution is to install multiswitches in boxes on each floor to provide the signals to the apartments on the floor.
The main advantages of this solution are limited number of the cables in shafts and division of the distributing network into small, independent subnetworks. This segmentation allows for virtually complete elimination of a massive breakdown of the system.
The photo above shows an example of the box with equipment for signal distribution on one floor. The SS-920 R70526 tap takes signals from the 9-cable "bus" going vertically from the bottom to the top of the building. The MV-908L R70858 multiswitch is connected with the tap through F-F E8242 adapters. Identical layout of the outputs of the tap and inputs of the multiswitch allows for these quick end elegant connections that take minimum amount of space in the installation box. This is a key issue when the boxes are located in limited space designed for such installations. Additionally, MV multiswitches are powered via signal lines from SA-91L R70901 amplifier located on another floor - there is no need to provide a separate power cable to each box. The box in the photo is the TPR-21 R90562 (450x350x120 mm).
SMATV system in a multistory building
Click on to download pdf version (2.2 MB)
The solution presented in the figure above, based on Terra MSV multiswitches and tap-off line concept (cable bus) is the most optimal one in terms of the number of components. Due to a small size of the subnetwork in the example (encompassing 15 apartments located in a single staircase of a 5-story building), all the apartments can be served by one multiswitch. The SMATV system distributes signals from two satellites (e.g. Hotbird and Astra) received by two dishes equipped with QUATRO Inverto Black Ultra A98266 LNBs, and a range of terrestrial signals, received by DVB-T antenna Dipol Tri-Digit A2670, VHF antenna Dipol-4/DAB A0140, and FM antenna Dipol 1RUZ PMB A0221.
The cabling consists of 11 coaxial cables Triset-113 E1015 going from the roof to the technical room containing all active devices. In the case of a higher building or when the distance from the antenna set to the technical room is longer than 25-30 meters, it is recommended to install additional installation box with amplifiers, located close to the antennas (in the attic or on the highest floor). In the presented solution, all the cables to the subscribers run from the room. Because of large number of cables going in parallel, they should have very good screening efficiency, like TRISET-113 E1015.
More on topologies and solutions of multiswitch systems can be found in the excerpt of another article, Example diagrams of multiswitch systems
The technical room contains:
  • set of amplifiers for terrestrial signals: DVB-T, FM, DAB (two channel amplifiers Terra at420 R82510 and broadband amplifier Terra ma400 R82520). The combined output signal is distributed via the multiswitch system.
  • amplifier for 9-input multiswitches SA-91L Terra R70901, amplifying TV SAT and terrestrial TV signals and powering via signal lines all MV multiswitches;
  • TV/SAT tap Terra SD-920 R70526 extending 9-cable systems (2x4 SAT + Terr. TV) into two subnetworks;
  • 9/16 multiswitch TERRA MV-916 R70866 with 9 inputs with signal level adjustment and 16 outputs with diversification of signal levels to compensate the differences in attenuation of various lengths of cables that have to be used in the installation.
The highly reliable Terra MV devices are covered by a 4-year warranty.
Designing of SMATV systems - Terra SatNet software
Selecting the equipment for a multiswitch system, the designer has to take into account the attenuation in all paths, to ensure proper signal levels in every subscriber outlet. The figure below shows a part of the project of the previously introduced system, made ​​with the use of free Terra SatNet utility.
A part of a multiswitch system designed with Terra SatNet utility
Click on to enlarge
Key features of Terra SatNet utility:
  • designing complete systems for reception of terrestrial and satellite broadcasts
  • taking into account individual parameters of all devices and cables
  • taking cable parameters from provided table or entering specific values
  • taking into account cable lengths
  • declaring the signal levels at the input of the system (from LNB and DVB-T antenna)
  • calculating loss of DVB-T and SAT signals at various frequencies in the whole frequency range
  • possibility of manual adjustment of automatically preselected gain levels of multiswitches
  • automatic choice of passive components (splitters, taps)
  • signaling the correct signal levels in all devices and outlets
  • printing the final designs
The diagrams that we have prepared with SatNet software (.dwg files), everyone can use for practical implementations of systems based on Terra devices. The .dwg files can be found in the catalog pages of the devices (Available downloads), e.g.
Implementation of LAN in a multistory building
An example of LAN in a multistory building
Click on to download pdf version
Telecommunications box in each apartment is connected via two UTP cables NETSET E1408 with the technical room that is the connection point with telecommunications networks. One of the cables can be used, for example, by door entry system. The cables in the apartment boxes can be terminated e.g. with two-port patch panels, for easy connection with the cabling installed inside the apartments.
The cables from the apartments go down through the shaft and enter the technical room with 24-port (CAT5 RJ45) patch panels R9120316. This way the service providers can easily connect their switches installed in the room to the building network.
Implementation of CATV network in a multistory building
An example of CATV distribution in a multistory building
Click on to download pdf version
Some examples of modern telecommunications
and RF distribution systems in multifamily buildings
Multistory residential building equipped with fiber-optic and multiswitch installations plus structural cabling
Click on to download pdf version (2.5 MB)
Installations in a multistory residential building with 3 staircases. The technical room is located in the middle staircase, there are additional cabinets in the other staircases. Click on to download pdf version.