Terra Cascadable 8 Port dSCR Multiswitch

The programmable SRM-584 multiswitch has four pairs of Legacy /dSCR DTT outputs. In dSCR mode, the outputs allow 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 programmer).

• Multiswitch compatible with Unicable I/II tuners

• Number of outputs: 8xdSCR/Legacy

• Built-in AGC circuit

• Active terrestial path

• Built-in LNB-type switch: Quatro and WideBand

• 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

• Possibility of using receivers supporting EN50607 and EN50494 standards in the same subsystem (8 x EN50494 24 x EN50607)

The single-cable cascadable SRM-584 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-584 multiswitch fully supports receivers operating in two dynamic modes: SCR (Unicable I - 8 User Bans) and dSCR (Unicable II - 32 User Bands).

The SRM-584 multiswitch has 5 inputs (four polarization/band pairs (VL–HL–VH–HH) plus active terrestrial path (DTT)) and eight 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-584 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 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 (20 VDC, 2 A).