A DVB-C head-end enables satellite TV (via modulation conversion) on cable/antenna sockets connected in series.
- A DVB-C headend can be used as a replacement for a broadband cable connection. One satellite dish is sufficient for many users.
With a DVB-C headend, an older coaxial cabling can still be used. - In combination with our distribution amplifier AMP X8 and EOC 1000/EOC 2000, the existing coaxial cabling can also be used to transmit Gbit network data at the same time.
- Expensive new cabling is not necessary.
- The Digital Devices headends allow the conversion of 24 DVB-S/S2/S2X satellite transponders into 24 DVB-C transponders.
This corresponds to about 192 SD channels, 96 HD channels or 48 UHD channels in good quality. By using the best reception technology, even weak signals at the edge of the reception ranges can be received. - The low power consumption ~50 W (at full configuration) helps to reduce operating costs significantly.
- Our DDM software (Windows, Linux and MAC OS) can securely manage and monitor any number of headends remotely.
- Our headends are delivered in a rugged 19" 1RU case of German manufacture. The small housing (440 mm x 243.5 mm x 44 mm) can also be used as a wall mounted housing. Up to 6 speed controlled fans provide sufficient cooling.
- We do not use electrolytic and tantalum capacitors in our boards, which is good for the environment and means a much longer lifetime (MTBF 500.000 h and more).
Signal Input
- Three eight-way DVB- S/S2/S2X tuners allow simultaneous reception of 24 full DVBS/S2/S2X transponders.
- When using Unicable® or JESS®, all 24 tuners can be supplied via one antenna cable.
Signal Processing
- The Digital Devices headend converts the incoming DVB-S/S2/S2X satellite transponders into DVB-C channels.
- Other sources can also be fed in as unicast/multicast streams, such as a hotel’s self-presentation.
- Via the DDM software for Windows, MAC OS and Linux, the channels can be ordered and recombined as desired.
- Depending on the configuration of the head-end, input signals from 8, 16 or 24 tuners can be processed.
- Output signals from 8, 16 or 24 transponders are also available.
- For encrypted channels, 4 Common Interface slots are available.
- If a Common Interface is used in the system, decrypted broadcasts can be fed in via this.
Note: The regulations of the PayTV providers or the regional public broadcasters must be observed.
Signal Output
- The Digital Devices residential headend stations output a DVB-C compatible data stream.
The newly assembled 8/16/24 transponders can be arbitrarily assigned to the 96 output frequencies from 114 - 848 MHz.
Note: our headend does not perform transrating for energy efficiency reasons, the output data rate of a TV station is the same as the input data rate.
Especially Suitable for:
- Hotels
- Residential complexes
- Hospitals
- Health resorts
- Apartment houses
- Renovation of old buildings
DVB-S/S2/S2X Tuner
- 8/16/24 DVB-S/S2/S2X Tuner
- 8/16/24 Multi-Standard Demodulators
S2X Features
- QPSK:
~951
MSym
- 8PSK/8APSK:
861
MSym
- 16APSK:
64.54
MSym
- 32APSK:
51.64
MSym
- 64APSK:
434
MSym
- 128APSK:
36.854
MSym
- 256APSK:
32.254
MSym
- Annex M:
5002
MSym
1 Symbol rates were tested up to 85 MSymbols/s.
2 Not implemented yet.
4 The maximum DVB-S2/S2X LDPC-bitrate is limited to 720 Mbit/s. This bitrate is defined as symbol rate x bits/symbol, i.e. 8PSK 30 M symbols = 90 Mbit/s. The driver will assign the used bitrate dynamically. DVB-S-channels don't account for the limit.
Sensitivity (@25 MSym)
- QPSK 11/45:
-89 dBm
(20 dBµV)
- QPSK 1/2:
-86 dBm
(23 dBµV)
- 8PSK 9/10:
-77 dBm
(32 dBµV)
- 256APSK 3/4:
-69 dBm
(40 dBµV)
More Performance Features
- Signal stability: > 106 dbµV (-6 dBm)
- Isolation: 65 dB – 80 dB (depends of the signal strength)
DiSEeqC 2.0 Support
Unicable® SCR/Cenelec EN50494
- Supports up to 8 tuners with just one antenna cable.
- Using Unicable®/SCR/CENELEC EN50494 compliant LNB or multi switch.
JESS©/Cenelec EN50607
- Supports up to 32 tuners with just one antenna cable.
- Requirement: Unicable®/SCR/CENELEC EN50494 compliant LNB or multiswitch according to En50494.
DVB-C Characteristics
- 8/16/24 transponder
- Frequency range: 114 – 858 MHz
- Symbol rates: 1.0 – 7.1 Msymbols
- QAM 16, 32, 64, 128, 256
- MER (Modulation Error Rate): > 42 dB
- Power consumption: ≈ 40 Watt
Satellites Characteristics
- Modulation:
- QPSK
- 8PSK/8APSK-L
- 16APSK/16APSK-L
- 32APSK/32APSK-L
- 64APSK/64APSK-L
- 128APSK
- 256APSK/256APSK-L
- LNB Power: 4x max. 19 V, 1 A pulse current, 500 mA continuous current
- L-Band: 950 MHz to 2150 MHz
- DVB FEC: (Auto Spectral Detection)
- Full DiSeqC 2.X support
Unicable Conformity
- SCR/Cenelec EN 50494 (Unicable®)
JESS® Conformity
- Cenelec EN 50607
Power Consumption
- ≈ 40 Watt
Green IT
- RoHS compliant
- WEEE DE 99353762
Security
- Produced and developed according to European standards, DIN EN ISO 9001:2000.
Dimensions
- L 44 mm, W 483 mm, H 211.5 mm
Output
- Frequency range: 114 – 858 MHz
- All modulations according to DVB-C specification
- Symbol rates: 1.0 – 7.1 Msymbols
- QAM 16, 32, 64, 128, 256
- 24 transponders
Output level
- Per channel/8 channels active: 101 dBµV
- Per channel/16 channels active: 97 dBµV
- Per channel/24 channels active: 96 dBµV