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Multiswitch satelit

TERRA dSCR

Single-cable Cascadable dSCR Multiswitch: Terra SRM-524 (class A, active terr. TV path, AGC)
Cod: R80524
Preţ fără TVAPreţ cu TVARabatValiditate  
627,97 Lei747,28 Lei0 %
Garanţie - 48 de luni
Single-cable Cascadable dSCR Multiswitch: Terra SRM-521 (class A, passive Terr. TV path)
The SRM-524 R80524 multiswitch has been equipped with LNB switch for selecting quatro or wideband LNB
Single-cable Cascadable dSCR Multiswitch: Terra SRM-521 (class A, passive Terr. TV path)
The DC IN connector allows for powering the Terra SRM-524 R80524 multiswitch from the R71468 20 VDC power supply. The DC switches enable using the H/V lines for transmitting the 20 VDC supply voltage.
The programmable SRM-524 R80524 multiswitch has one pair of Legacy /dSCR + DTT outputs. The outputs allow 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 in Unicable II standard, after reprogramming with the PC102W R80561 programmer) and through a distribution network based on typical passive satellite taps and splitters operating in the 5-2400 MHz frequency range. In Legacy mode, each of the outputs can be used as typical SAT output (like in Universal LNBs or standard (legacy) multiswitches) for connecting a legacy SAT TV receiver).
Key features
  • Built-in LNB switch for selecting wideband or quatro LNB
  • One pair of dSCR/Legacy tap outputs
  • DISEqC control connector allowing for connecting PC102W R80561 programmer and simultaneous configuration of all outputs
  • Full compatibility with EN50494 standard - Unicable I - 8 UBs (User Bands) from each of the 4 pairs
  • Full compatibility with EN50607 - Unicable II - 32 UBs (User Bands) from each of the 3 pairs
  • AGC system ensures stable 84 dBμV output level in the SAT path and 82 dBμV level in the terrestrial path
  • Possibility of using receivers supporting EN50607 and EN50494 standards in the same subsystem (8 x EN50494 + 24 x EN50607)
  • Power supply diagnostics by means of LEDs located on the device housing.
The single-cable cascadable SRM-524 R80524 multiswitch allows for distribution of DVB-S/S2 signals from one satellite (or, using wideband LNBs, from two satellites) 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 cascadable SRM-524 R80524 multiswitch fully supports receivers operating in two dynamic modes: SCR (Unicable I - 8 User Bans) and dSCR (Unicable II - 32 User Bands).
The SRM-524 multiswitch has 5 inputs (four polarization/band pairs (VL–HL–VH–HH) plus active terrestrial path (DTT)) and two outputs: dSCR (each allowing for independent operation of up to 16 SAT dSCR receivers/STBs fed via one coaxial cable - EN50607 standard) or operating as Legacy (typical SAT output like in Universal LNBs or standard (legacy) multiswitches for connecting a legacy SAT TV receiver).
The built-in Automatic Gain Control (AGC) appropriately adjusts the multiswitch gain to ensure preset, constant output signal levels.
By default, all outputs of the SRM-524 R80524 multiswitch are configured as Legacy (controlled by 14/18 V and 0/22 kHz commands from SAT receivers). Any output switches to Unicable dynamic mode after receiving DiSEqC command compliant with EN50494/EN50607 standard. This means that each individual output can feed via a single coaxial cable and 5-2400 MHz satellite splitters up to 16 receivers (EN50607).
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 practical limit results only from the attenuation of the passive distribution network).
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.
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-524 R80524 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. As an example, a list of popular satellite receivers available in the Polish market and supporting single-cable multiswitches is provided below:
Ferguson:Cyfrowy Polsat:
  • Decoder HD 5000
  • Decoder HD 5500s
  • EVOBOX PVR
nc+:
  • BOX+
  • mediaBOX+
  • turboBOX+
  • wifi Premiumbox+
  • UltraBox NC+
UHF TV Antenna: DIPOL 44/21-60 Tri DigitSatellite Dish TELMOR 120 TT Standard (graphite)Wide Band LNB: GT-SAT GT-WB1DAB / DVB-T Antenna: DIPOL 7/5-12FM Antenna: Dipol 1RUZ PM B (omnidirectional H+V)Antenna Triplexer Terra DC015L (VHFI/II+FM-VHFIII-UHF)Single-cable Cascadable dSCR Multiswitch: Terra SRM-544 (class A, active terr. TV path, AGC)Switching Power Supply Terra PS202F (20V 2A, Digital SCR)4-way SAT/TV/FM Splitter: Signal 1>4FWideband Amplifier: TERRA SA004 (300...2350MHz)Switching Power Supply Terra PS202F (20V 2A, Digital SCR)
The diagram above shows an example installation based on the cascadable single cable dSCR multiswitch with active terrestrial path and AGC function

Specifications
NameSRM-524
CodeR80524
SAT IF band (LNB wideband - LO = 10410 MHz)290-2340 MHz
SAT IF band (LNB wideband - LO = 10400 MHz)300-2350 MHz *
SAT IF band
(LNB quatro - LO = 9750 MHz / LO = 10600 MHz) 
950-2150 MHz 
SAT IF - output950-2150 MHz
Terrestrial path band
47-862 MHz
SAT IF in/out trunk lines4
Terrestrial path in/out line
1
dSCR/Legacy tap outputs
2 (1 pair)
SAT IF trunk line attenuation
< 4 dB
Terrestrial trunk attenuation
< 4 dB
Return loss / impedance> 10 dB / 75 Ω
SAT IF input level (one channel)65-105 dBµV
Terrestrial input level (eight channels)55-85 dBµV
Terrestrial path noise figure
<8 dB
dSCR+DTT user bands (dSCR mode) max 32 (configurable) 
dSCR+DTT user band width (dSCR mode)
20...60 MHz 
(
configurable)
dSCR+DTT user bands (dSCR mode) output level with AGC84 dBµV (configurable)
dSCR+DTT user bands (Legacy mode) output level with AGC (SAT)78 dBµV (typical)
dSCR+DTT user bands (Legacy mode) output level with AGC (DTT) max. 82 dBµV 
(for 8 channels, configurable)
Isolation between SAT IF inputs
> 30 dB
Isolation between SAT IF input and dSCR output
> 30 dB
Isolation between SAT IF and DTT input
> 25 dB
SAT IF trunk DC pass-through current capacity
 max. 3.2 A
1.6 A for one line
DTT line DC pass-through current capacity max. 200 mA
Current consumption by  H linesmax. 290 mA 
Current consumption by  V linesmax. 280 mA
Current consumption from H/V lines (DC IN 20 VDC)  270 mA
Current consumption from H/V lines (DC IN 18 VDC)
 310 mA
Current consumption from H/V lines (DC IN 15 VDC)
 390 mA
Current consumption from a SAT receiver (18 VDC) max. 20 mA
Current pass from DC IN(H) to H trunk line (switch)
 max. 1.6 A
Current pass from DC IN(V) to V trunk line (switch) max.1.6 A
Operating temperature range
-20ºC... +50ºC
Dimensions/weight 227x134x30 mm/0.80 kg

 * By default, the multiswitch in wideband mode operates in the 290 MHz...2340 MHz band, which can be changed with the PC102W programmer.

Preţ fără TVAPreţ cu TVARabatValiditate  
627,97 Lei747,28 Lei0 %
 
Single-cable Cascadable dSCR Multiswitch: Terra SRM-524 (class A, active terr. TV path, AGC)
Cod: R80524
George Popescu
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