Televes dCSS NevoSwitch 5
A 5-input, 4-output multiswitch for 1 satellite (Quattro) or 2 satellites (WideBand).
Product Overview
The Televes dCSS NevoSwitch 5 is a multiswitch equipped with 5 inputs: one passive terrestrial and four satellite inputs. It offers 4 dCSS/dSCR user outputs compliant with SCR I (EN50494) and SCR II (EN50607) standards, as well as Legacy mode for compatibility with existing set-top boxes. The four satellite inputs can be configured for Quattro mode (one satellite) or WideBand mode (two satellites). This multiswitch can be used in a star topology as a terminal or in a cascade configuration. Its exclusive DCFLEX functionality allows flexible powering from various sources within the system, offering installers freedom in choosing the power method.
Key Features:
- 4 user outputs, supporting up to 16 user bands each.
- Compact design.
- High shielding (Class A) due to Zamak construction.
- Multiple powering options (DCFLEX): from the power supply, receiver, or cascade.
- Easy integration into existing systems.
- Enhanced security for connected set-top boxes, allowing full isolation (RECEIVER POWER OFF).
- TERR.DC switch isolates or connects power in the terrestrial branch, useful for mast amplifiers or intelligent antennas.
- Wide voltage range (12V - 18V) for compatibility with most systems.
- ECO mode for reduced power consumption when STBs are disconnected.
- TForce technology for automatic terrestrial output level adjustment.
- Compatible with conventional multiswitches in the NevoSwitch series and other IRS systems.
- Versatile selector switch for cascade and terminal modes.
- Input and output color identification.
- 100% European design, quality, and manufacturing.
dCSS Technology Explained
dCSS (Digital Channel Stacking Switch) technology is an evolution of SCR (Satellite Channel Router) technology. SCR allows the distribution of one or more satellite signals to multiple users over a single coaxial cable by assigning static or dynamic user bands and using DiseQc commands for tuning. The SCR standard (EN50494), defined in 2007, supported up to 8 user bands in the satellite IF band (950-2150 MHz). dCSS, based on the EN50607 standard, significantly improves this by allowing the distribution of more satellites and up to 32 user bands in a single cable, effectively utilizing the entire satellite band. dCSS is backwards compatible with SCR and can be used in individual or communal distribution, with dynamic or static operation modes. It can also be combined with optical fiber for extended reach. dCSS technology facilitates the widespread adoption of new reception devices like Home Gateways and PVRs.
WideBand Technology
WideBand technology, also known as FullBand, utilizes a wide range of frequencies for broadband transmission, making a substantial portion or the entire frequency spectrum available to users. It is suitable for fiber deployments or coaxial scenarios with compatible multiswitches. In WideBand technology, an LNB captures a complete satellite signal and distributes it via two universal outputs (vertical and horizontal), covering both high and low bands in a frequency range of 290 to 2340 MHz. Compared to the widely deployed Quattro technology, WideBand offers advantages such as simpler, faster, and cleaner installations (half the coaxial cables), wider bandwidth for more services (290-2340MHz), and reusable deployment by leveraging existing Quattro installations.
Installation Examples and Powering Options
The document illustrates various dCSS cascade system installation scenarios, including:
- Domestic dCSS installation (2 satellites): Both WideBand LNBs and the multiswitch are powered by a single 1.5A PSU.
- dCSS cascade system installation with distributed satellite powering (2 satellites): WideBand LNBs, terrestrial trunk, cascade load, and the latest dCSS multiswitch are powered by a 3A PSU. SAT lines of other dCSS multiswitches in the cascade are powered by connected dCSS STBs, eliminating the need for additional PSUs.
- dCSS cascade system installation with centralized satellite powering (2 satellites): A single 3A PSU powers all WideBand LNBs, terrestrial and satellite trunk lines, and the entire cascade of multiswitches. STBs are DC isolated from the cascade and protected against overcurrent.
- Full dCSS cascade system installation (2 satellites): The primary PSU powers satellite trunk lines, WideBand LNBs, and the upper terrestrial trunk line. The PSU connected to the latest dCSS MSW powers its satellite trunk lines, cascade MSWs, and the lower terrestrial trunk line. Some dCSS MSWs are locally powered by connected dCSS STBs. Cascade amplifiers are powered by their own PSUs.
- Full dCSS cascade system in a FTTH installation (2 satellites): Cascade of dCSS multiswitches for optical reconversion. Powering can be centralized (3A PSU powers terminal multiswitch, cascade MSWs, optical receiver, and trunk lines) or distributed (1.5A PSU powers terminal multiswitch's satellite trunk lines, terrestrial trunk line, and cascade MSWs; SAT trunk lines of other dCSS multiswitches are powered by STBs; optical receiver has its own PSU).
The document details various switch configurations for powering options:
- Powering from PSU: Configurations for TERR.DC, RECEIVER POWER, and SAT DC LINK switches to control power supply to satellite and terrestrial trunks.
- Powering from the User STB receiver: Switch settings for RECEIVER POWER and SAT DC LINK to enable or disable power supply from STB receivers.
- Powering from the satellite trunk: Switch settings for TERR.DC, RECEIVER POWER, and SAT DC LINK when powering from the satellite trunk.
Technical Specifications (Ref. 719312)
| Specification | Value | Quattro Mode | WideBand Mode |
|---|---|---|---|
| Number of inputs | 5 | ||
| Number of cascadable outputs | 5 | ||
| Number of user outputs | 4 | ||
| Frequency range TERR. | 47 ... 862 MHz | ||
| Satellite mode | Quattro | WideBand | |
| Frequency range SAT. | 950 ... 2150 MHz | 290 ... 2340 MHz | |
| Input level TERR Active | 15 ... 40 dBmV | ||
| Input level TERR Passive | 0 ... 37 dBmV | ||
| Input level SAT. | 5 ... 50 dBmV | ||
| Through losses TERR. | < 2.5 dB | ||
| Through losses SAT. | 1.5 ... 3 dB | ||
| Cross-polarity isolation | > 30 dB | ||
| Output modes dCSS | Legacy / SCR I / SCR II | ||
| dCSS standard | Germany (EN50494/EN50607) | ||
| User Band bandwidth | 46 MHz | ||
| User Bands (UB) per user | 16 | ||
| Output level SAT | 24 dBmV | ||
| Output level 2CH DBV-T | 7 dBmV | ||
| Gain TERR Active | 24 dB | ||
| Attenuation TERR Passive | -23 dB | ||
| Automatic gain range TERR. Active | 25 dB | ||
| Overall DC Power options MSW dCSS | PWR port / dCSS out (Receiver power ON) / Trunk lines VL/VH/HL/HH | ||
| Powering | 11 ... 18 Vdc | ||
| Current consumption | 3 A | ||
| Max current (@12V): dCSS + Terr. Amp. + Auto load | 700 mA | ||
| Max current (@18V): dCSS + Terr. Amp. + Auto load | 500 mA | ||
| User output max current | 400 mA | ||
| Max current per trunk line | 750 mA | ||
| Total max. current SAT trunk lines | 3 A | ||
| Operating temperature | 23 ... 113 °F | ||
| Protection index (IP) | 20 |
For more information, visit www.televes.com.
