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Multiswitches

For 1 LNB

Single-cable Cascadable dSCR Multiswitch: Terra SRM-543 (class A, active terr. TV path)

Code: R80543

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Availability: In stock

Including VAT 221.17 EUR Disc. 0 %

Details

Array
View of the multiswitch
View of the multiswitch
Top view
Top view
The programmable SRM-543 multiswitch has four outputs (two pairs). In dSCR mode, each of the four Legacy / dSCR +Terr.TV outputs allows for independent operation of up to 16 SAT dSCR receivers/STBs fed via one coaxial cable, or, in the Legacy mode, can be used for connecting a legacy SAT TV receiver, in exactly the same way as an output of a Universal LNB or of a standard (legacy) multiswitch.
Key features
  • Compliance with EN50494 - Unicable I, 8 UBs (User Bands) from each pair of outputs
  • Compliance with EN50607 - Unicable II, 32 UBs from each pair of outputs
  • Two pairs of outputs ((4xdSCR/Legacy), two independent processors
  • Possibility of using receivers compliant with EN50607 and EN50494 in the same distribution network (8 x EN50494 + 24 x EN50607)
  • AGC system ensures stable 84 dBμV output level 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-543 R80543 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-543 R80543 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-543 multiswitch has 5 inputs (four polarization/band pairs (VL–HL–VH–HH) plus passive terrestrial TV) and 4 outputs (two pairs). In dSCR mode, each of the four Legacy / dSCR +Terr.TV outputs allows for independent operation of up to 16 SAT dSCR receivers/STBs fed via one coaxial cable, or, in the Legacy mode, can be used for connecting a legacy SAT TV receiver, in exactly the same way as an output of a Universal LNB or of a standard (legacy) multiswitch.
By default, the outputs of the SRM-543 R80543 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 four 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).
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The default settings of the SRM-543 R80543 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+
The diagram above shows an example installation based on cascadable single cable dSCR multiswitches.
The diagram above shows an example installation based on cascadable single cable dSCR multiswitches.
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.
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:
NameSRM543
CodeR80543

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 
 4 (2 pairs)
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  /
4 dB
Output (legacy mode)Signal level (AGC)
78 dBµV 
Terr. DVB-T/Radio level / gainIMD3=60 dB max 104 dBµV  /
4 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 consumption
From DC IN  20 V, max 510 mA
From H trunk lines
20 V, max 510 mA;
15 V/18 V, max 700/580 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 from receiver/STB
 13 V, max 410 mA; 18 V, max 310 mA
Operating temperature range 
 -20ºC... +50ºC
Dimensions / Weight
134x135x30.5 mm/0.44 kg
Configuration of DVB-S/S2 (8PSK, QPSK) - DVB-T (COFDM) TERRA transmodulator (example: tdx-480 R81621)

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