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Multiswitches

TERRA dSCR

Single-cable Cascadable dSCR Multiswitch: Terra SRM-523 (class A, active terr. TV path)
Code: R80523
Price w/o taxPriceDisc.Validity  
92.56 EUR92.56 EUR0 %
4-year warranty
Single-cable Cascadable dSCR Multiswitch: Terra SRM-521 (class A, passive Terr. TV path)
Terra SRM-523 multiswitch
Single-cable Cascadable dSCR Multiswitch: Terra SRM-521 (class A, passive Terr. TV path)
Top view
The programmable SRM-523 multiswitch has two dSCR / Legacy outputs allowing in dSCR mode for independent operation of up to 32 SAT dSCR receivers/STBs, fed in via two coaxial cables (16+16, default configuration) or via one coaxial cable (32 from one output, after reprogramming with the PC102W R80561 programmer). An output can be in Legacy mode used as a typical SAT output (like in Universal LNBs or standard (legacy) multiswitches) for connecting a legacy SAT TV receiver).
Key features
  • Full compatibility with EN50494 standard - Unicable I - 8 UBs (User Bands)
  • Full compatibility with EN50607 - Unicable II - 32 UBs (User Bands)
  • One pair of outputs (2xdSCR/Legacy) and one processor
  • Possibility of using receivers supporting EN50607 and EN50494 standards in the same system (8 x EN50494 + 24 x EN50607)
  • AGC system ensures stable 84 dBμV output level within the whole rated range of the input levels
  • Active terrestrial path (built-in amplifier)
  • Dynamic mode: distribution of signals to up to 32 receivers
  • Static mode: IF/IF converter
The SRM-523 R80523 cascadable single-cable 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 SRM-523 R80523 multiswitch fully supports receivers operating in two dynamic modes: SCR (Unicable I - 8 User Bands) 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-523 R80523 multiswitch has 5 inputs (four polarization/band pairs (VL–HL–VH–HH) plus passive terrestrial TV) and two dSCR / Legacy outputs allowing in dSCR mode for independent operation of up to 32 SAT dSCR receivers/STBs, fed in via two coaxial cables (16+16, default configuration) or via one coaxial cable (32 from one output, after reprogramming with the PC102W R80561 programmer). An output can be in Legacy mode used as a typical SAT output (like in Universal LNBs or standard (legacy) multiswitches) for connecting a legacy SAT TV receiver).
By default, the outputs of the SRM-523 R80523 multiswitch operate in Legacy mode (with 14/18 V, 0/22 kHz control signals). They switch to Unicable dynamic 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 via a single cable (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 SRM523 R80523 multiswitches 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 default settings of the SRM-523 R80523 multiswitch (operating mode, User Bands 16+16, UB bandwidth, output level) can be modified with the use of 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+
UHF TV Antenna: DIPOL 44/21-60 Tri DigitDAB / DVB-T Antenna: DIPOL-4/5-128-way SAT / TV / FM Splitter 1>8 Signal4-way SAT/TV/FM Splitter: Signal 1>4FAntenna Triplexer Terra DC015L (VHFI/II+FM-VHFIII-UHF)Single-cable Cascadable dSCR Multiswitch: Terra SRM-523 (class A, active terr. TV path)Switching Power Supply Terra PS202F (20V 2A, Digital SCR)Single-cable Cascadable dSCR Multiswitch: Terra SRM-523 (class A, active terr. TV path)Universal QUATRO LNB: Inverto Red Extended 0.3dBSatellite Dish INVERTO IDLB-STCF 120cm (light color)
The diagram above shows an example installation based on cascadable single cable dSCR multiswitches SRM-523 R80523

Satellite Dish INVERTO IDLB-STCF 120cm (light color)Universal QUATRO LNB: Inverto Red Extended 0.3dBDVB-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)Single-cable Cascadable dSCR Multiswitch: Terra SRM-522 (950...2150MHz/290...2340MHz, class A, passive terr. TV path)
Example of SMATV system based on TDX-480 R81621 transmodulator and a dSCR multiswitch. The system allows for reception of satellite channels from the whole Ku band, 11.7 to 12.75 GHz.

Specifications:
NameSRM523
CodeR80523

Frequency range
  
SAT IF input950-2150 MHz
SAT IF output950-2150 MHz
DVB-T/Radio  47-862 MHz 
Inputs / cascade  outputs (trunk) SAT IF  4
DVB-T/Radio 1
Number of tap outputs 
 2 (1 pair)
Return loss
> 10 dB
Impedance 75 Ω
Input levels 
SAT  60...95 dBµV
DVB-T/Radio IMD3=60 dB 96 dBµV max
Output (dSCR mode)
Number of UBs max 32 (configurable)
UB bandwidth 
  20...60 MHz (configurable)
Signal level (AGC) 84 dBµV
Terr. DVB-T/Radio level / gain
IMD3=60 dB max 104 dBµV  /
8 dB
Output (legacy mode)Signal level (AGC)
78 dBµV 
Terr. DVB-T/Radio level / gainIMD3=60 dB max 104 dBµV  /
8 dB
Loss of cascade lines (trunk)SAT IF  < 3.0 dB
DVB-T/Radio  < 1.0 dB
Current pass trough cascade lines (trunk)SAT IF   total: max 2 A; any path: max 1 A
DVB-T/Radio   max 250 mA
Current pass to H lines
From 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 / DVB-T/Radio
 > 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
134x135x30.5 mm/0.42 kg
Configuration of DVB-S/S2 (8PSK, QPSK) - DVB-T (COFDM) TERRA transmodulator (example: tdx-480 R81621)
Price w/o taxPriceDisc.Validity  
92.56 EUR92.56 EUR0 %
 
Single-cable Cascadable dSCR Multiswitch: Terra SRM-523 (class A, active terr. TV path)
Code: R80523
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