Televes dCSS NevoSwitch 5 Inputs - 2 Outputs

Product Overview

The Televes dCSS NevoSwitch is an advanced multiswitch designed for efficient satellite signal distribution. It features 5 inputs, including one passive terrestrial input and four satellite polarity inputs, and provides 2 dCSS/dSCR user outputs. This device is compliant with SCR I (EN50494) and SCR II (EN50607) standards, ensuring compatibility with both new and existing set-top boxes (STBs). The multiswitch can be configured as a terminal in a star topology or cascaded using a simple switch.

A key feature is the exclusive DCFLEX functionality, which offers flexible powering options. The multiswitch can be powered from an external power supply, the connected receiver, or through the cascade via satellite inputs or outputs. This flexibility allows installers to adapt the powering method to specific system requirements. The device also includes several control switches that enhance its versatility, notably the ability to isolate the multiswitch from the cascade in terms of current.

Key Features and Highlights

2 User Outputs: Supports up to 16 user bands per output.
DCFLEX Functionality: Provides multiple powering options (power supply, receiver, or cascade).
Easy Integration: The SAT DC LINK switch allows local powering of the multiswitch without affecting the cascade power.
Enhanced Security: Set-top boxes can be fully isolated from the cascade power supply using the RECEIVER POWER switch.
Terrestrial DC Control: The TERR.DC ON switch manages power supply to the terrestrial branch, useful for mast amplifiers or BOSS antennas.
Wide Voltage Range: Compatible with most systems, operating between 10 V and 20 V.
Eco Mode: Reduces power consumption to zero when STBs are disconnected and the terrestrial input is passive.
TForce Technology: Automatically adjusts the terrestrial output level (TERR. AMP. ACTIVE) to the optimal level.
European Design: High quality design, manufacturing, and materials (zamak).
Color Identification: Input and output ports are color-coded for easy identification.
Versatile Configuration: Supports cascade and independent configurations.

What is dCSS Technology?

dCSS (Digital Channel Stacking Switch) technology is an evolution of SCR (Satellite Channel Router) technology. SCR allows the distribution of one or several satellite signals to multiple users over a single coaxial cable by assigning user bands and using DiSEqC commands for tuning. The original SCR standard (EN50494), defined in 2007, supported up to 8 user bands.

The dCSS standard (EN50607) significantly improves upon SCR by allowing the distribution of more satellites and supporting up to 32 user bands in a single cable, effectively utilizing the entire satellite band. dCSS is backwards compatible with SCR.

dCSS technology is suitable for both individual and communal distribution and can operate in dynamic or static modes. It can also be combined with optical fiber to extend distribution reach. This technology is key for the mass adoption of new reception devices like Home Gateways and PVRs.

Technical Specifications

Parameter	Value
Number of inputs	5
Number of cascadable outputs	5
Number of user outputs	2
Frequency range TERR.	47 ... 862 MHz
Frequency range SAT.	950 ... 2150 MHz
Input level TERR Active	15 ... 40 dBmV
Input level TERR Passive	5 ... 50 dBmV
Input level SAT.	0 ... 37 dBmV
Through losses TERR.	< 2.5 dB
Through losses SAT.	2 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	24 dBmV
Gain TERR Active 1...4	12 ... 15 dB
Attenuation TERR Passive	-16 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 ... 20 Vdc
Powering Trunk TERR	11 ... 20 Vdc
Max current (@12V): dCSS + Terr. Amp. + Auto load	425 mA
Max current (@18V): dCSS + Terr. Amp. + Auto load	302 mA
Max current input TERR	500 mA
User output max current	1 A
Max current SAT trunk 4 lines	3 A
Operating temperature	23 ... 113 °F
Protection index (IP)	20

Application Examples

The document provides several diagrams illustrating different installation and powering scenarios for the dCSS NevoSwitch, including:

A typical installation in a multi-story building with a single LNB Quattro feeding multiple floors via cascaded multiswitches.
Detailed views of switch configurations for various powering methods: from the PSU, from the user STB receiver, and from the satellite trunk.
Diagrams showing cascade configurations with different power supply units (e.g., 3A PSU) and tap-off values (e.g., 20dB, 15dB, 8dB).

These examples demonstrate the flexibility of the dCSS NevoSwitch in diverse network setups.

Functionalities - Powering Options

The multiswitch offers several powering configurations controlled by its switches:

1) Powering from PSU

Switches: TERR.DC – OFF, TERR.AMP. - PASSIVE, RECEIVER POWER – OFF, SAT DC LINK – OFF
No power is supplied from STB receivers or the satellite trunk. Terrestrial trunk is also not supplied.
Switches: TERR.DC - OFF, TERR.AMP. - PASSIVE, RECEIVER POWER – OFF, SAT DC LINK – ON
No power from STB receivers or terrestrial trunk. Satellite trunk is supplied.

2) Powering from the User STB receiver

Switches: TERR.DC - OFF, TERR.AMP. - PASSIVE, RECEIVER POWER – ON, SAT DC LINK – OFF
Power is supplied from STB receivers. Satellite and terrestrial trunks are not supplied.
Switches: TERR.DC - OFF, TERR.AMP. - PASSIVE, RECEIVER POWER – ON, SAT DC LINK – ON
Power is supplied from STB receivers and the satellite trunk. Terrestrial trunk is not supplied.

3) Powering from the satellite trunk (V-LOW, H-LOW, V-HIGH, H-HIGH)

Switches: TERR.DC – OFF, TERR.AMP. - PASSIVE, RECEIVER POWER – OFF, SAT DC LINK – ON
No power from STB receivers. Satellite trunk is supplied. Terrestrial trunk is not supplied.
Switches: TERR.DC – OFF, TERR.AMP. - PASSIVE, RECEIVER POWER – OFF, SAT DC LINK – ON
No power from STB receivers or terrestrial trunk. Satellite trunk is supplied.

For more information, visit www.televes.com.

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