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Multiswitches

Single-cable dSCR Multiswitch: Terra SRM-521 (class A, passive Terr. TV path)
Code: R80521
Price w/o taxPriceDisc.Validity  
75.43 EUR75.43 EUR0 %
4-year warranty
Single-cable dSCR Multiswitch: Terra SRM-521 (class A, passive Terr. TV path)
Terra SRM-521 multiswitch
Single-cable dSCR Multiswitch: Terra SRM-521 (class A, passive Terr. TV path)
Top view
The programmable SRM-521 multiswitch has 2 outputs, dSCR OUT (the satellite signals transmitted via one coaxial cable can be split among up to 32 dSCR/Unicable receivers) and Legacy OUT (for connecting a standard SAT receiver).
Key features
  • Full compatibility with EN50494 standard - Unicable I - 8 UBs (User Bands)
  • Full compatibility with EN50607 - Unicable II - 32 UBs (User Bands)
  • Possibility of using receivers supporting EN50607 and EN50494 standards in the same system (8 x EN50494 + 24 x EN50607)
  • Static mode: IF/IF converter
  • Dynamic mode: distribution of signals to up to 32 receivers
Single-cable SRM521 R80521 multiswitch allows for distribution of DVB-S/S2 signals from one satellite and terrestrial signals (DVB-T, DAB/FM radio). The satellite signals can be distributed by means of dSCR technology (digital Satellite Cable Router), requiring only one coaxial line and satellite splitters to provide the signals to compatible SAT receivers, along with terrestrial signals that can be received by standard televisions and radios. The SRM521 R80521 multiswitch fully supports receivers operating in two dynamic modes: SCR (Unicable I - 8 User Bans) and dSCR (Unicable II - 32 User Bands). The digital signals should be split among the receivers with the use of satellite splitters operating in 5-2400 MHz band.
The SRM-521 multiswitch has 5 inputs (four polarization/band pairs (VL–HL–VH–HH) plus passive terrestrial TV) and 2 outputs: dSCR OUT (allowing for independent operation of up to 32 SAT dSCR receivers/STBs fed via one coaxial cable) and Legacy OUT (typical SAT output like in Universal LNBs or standard (legacy) multiswitches for connecting a legacy SAT TV receiver).
By default, the SRM521 R80521 multiswitch is configured in dynamic mode, with dSCR OUT operating as Unicable port and Legacy OUT as universal (legacy) port that switches into Unicable mode after receiving DiSEqC command from a receiver/STB (compliant with EN50494 or EN50607 standard). It means that each of the two outputs of the multiswitch can independently feed up to 16 receivers (in the EN50607 standard).
The device can operate in two modes;
  • DYNAMIC - fixed output frequencies (User Bands) allocated for individual dSCR/Unicable receivers (distribution via single coaxial cable to up to 8 (EN50494 - UNICABLE I) or 32 (EN50607 - UNICABLE II) receivers);
  • STATIC - fixed input and output frequencies, IF/IF conversion allowing for distribution of signals from 32 satellite transponders to an unlimited number of receivers.
The programming of dSCR multiswitches is performed by the dedicated PC102W R80561 programmer.
The die-cast housing provides high screening efficiency by preventing the penetration of interfering signals to the unit.
Similarly to other multiswitches, the signals to the SRM521 R80521 multiswitch should be fed from QUATRO LNBs.
The multiswitch should be powered from an external power supply, e.g. PS202F R71468 (20 VDC, 2 A).
The table shows the default settings of the SRM-521 multiswitch (operation mode - DYNAMIC, 16+16 User Bands, Bandwidth, Level), which can be modified by the dedicated PC102W R80561 programmer.
There are many models of satellite receivers available on the market today. Not all of them support SCR/UNICABLE system compliant with EN50494 and/or EN50607 standard. In the case of implementing solutions based on the standards, all receivers that will be used by subscribers must support SCR/UNICABLE technology. A list of popular satellite receivers available on the Polish market and supporting single-cable multiswitches is provided below:
Ferguson:Cyfrowy Polsat:
  • Decoder HD 5000
  • Decoder
  • EVOBOX PVR
nc+:
  • BOX+
  • mediaBOX+
  • turboBOX+
  • wifi Premiumbox+
Satellite Dish INVERTO IDLB-STCF 120cm (light color)Universal QUATRO LNB: Inverto Red Extended 0.3dBSingle-cable dSCR Multiswitch: Terra SRM-521 (class A, passive Terr. TV path)Single-cable dSCR Multiswitch: Terra SRM-521 (class A, passive Terr. TV path)Antenna Amplifier TERRA AB007 (10-17dB, DC pass, Digital SCR)Switching Power Supply Terra PS202F (20V 2A, Digital SCR)Switching Power Supply Terra PS202F (20V 2A, Digital SCR)8-way SAT / TV / FM Splitter 1>8 SignalUHF TV Antenna: DIPOL 44/21-60 Tri DigitDAB / DVB-T Antenna: DIPOL-4/5-12Outdoor Antenna Amplifier TERRA MX-062 (FM+VHF & 2xUHF, 30/34dB)
The diagram above shows an example installation based on cascadable single cable dSCR multiswitches SRM-521 R80521

Satellite Dish INVERTO IDLB-STCF 120cm (light color)Universal QUATRO LNB: Inverto Red Extended 0.3dBSingle-cable dSCR Multiswitch: Terra SRM-521 (class A, passive Terr. TV path)DVB-S/S2 (8PSK, QPSK) to 8xDVB-T (COFDM) Transmodulator: TERRA TDX-480 (FTA)Power Supply TERRA UP413 (12V/4.5A, for Terra modules)Switching Power Supply Terra PS202F (20V 2A, Digital SCR)4-way Tap: FAC-4-18dB (5-1000MHz)4-way Tap: FAC-4-18dB (5-1000MHz)4-way Tap: FAC-4-18dB (5-1000MHz)4-way Tap: FAC-4-18dB (5-1000MHz)
Example of SMATV system based on TDX-480 R81621 transmodulator and SRM-521 R80521 multiswitch (allowing for reception of satellite channels from the whole Ku band, 11.7 to 12.75 GHz)

Specifications:
NameSRM521
CodeR80521  

Operating frequency range
  
SAT IF inputs950-2150 MHz 
SAT IF outputs950-2150 MHz
DVB-T/Radio  5-862 MHz 
Inputs / cascade  outputs (trunk)SAT IF  4
DVB-T/Radio 1
Distribution outputs 
 2
Return loss
> 10 dB
Input/output impedance
 75 Ω
Input levels 
SAT  60...95 dBµV
DVB-T/Radio  not defined (passive path)
dSCR outputNumber of UBs
 max 32 (configurable)
UB bandwith
  20...60 MHz (configurable)
Signal level (AGC)
 84 dBµV
Terr. TV path loss
 11 dB (typical)
Legacy outputSignal level (AGC) 
78 dBµV 
Terr. TV path loss 
 12 dB (typical)
Loss of cascade lines (trunk)
SAT IF  < 2.0 dB
Terr. TV path
 < 4.0 dB
Current pass trough cascade lines (trunk)
SAT IF  Total: max 2 A; any path: max 1 A
Terr. TV path
 max 250 mA
Current pass to H linesFrom DC IN
 20 V, max 1.7 A
From tap outputs
 20 V, max 500 mA;
13/18 V, max 300 mA
Isolation 
SAT IF input / SAT IF input
 > 30 dB
SAT IF input / tap output 
 > 30 dB
SAT IF / Terr.TV
 > 25 dB
Current consumption (without feeding external devices)  20 V, max 300 mA; 
13/18 V, max  450 mA
Operating temperature range
 -20ºC... +50ºC
Dimensions / Weight
116x91x25.5 mm / 0.28 kg 
Price w/o taxPriceDisc.Validity  
75.43 EUR75.43 EUR0 %
 
Single-cable dSCR Multiswitch: Terra SRM-521 (class A, passive Terr. TV path)
Code: R80521
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