QAM (DVB-C) Transmodulator with DVB-S/S2 & IPTV Input, 4 Tuners for 4 Satellite Transponders

BLANKOM HDC-7004 DVB-C Transmodulator

Professional 4x DVB-S2X & IP to 4x QAM Headend Solution

The BLANKOM HDC-7004 represents the pinnacle of 5th-generation signal processing, engineered specifically for broadcasters, system integrators, and commercial Headend operators. Operating as a highly versatile Transmodulator, the HDC-7004 ingests up to 4 DVB-S/S2/S2X satellite transponders alongside a massive payload of up to 128 IP streams, multiplexing and modulating them into 4 adjacent DVB-C (QAM) RF carriers.

Uncompromising Industrial Design

Unlike standard commercial alternatives that may suffer from thermal throttling, packet loss, or degraded MER under peak loads, the BLANKOM HDC-7004 is manufactured through strict OEM production standards to guarantee heavy and demanding use. Our hardware ensures an exceptionally clean RF output with an MER of ≥ 40 dB, significantly outperforming competitor models in its class.

Seamless BLANKOM Ecosystem Integration

Full compatibility is central to our engineering philosophy. The HDC-7004 integrates flawlessly with all other BLANKOM encoders, IRDs, and IPTV servers. Whether you are scaling an existing network or building a new broadcast facility from the ground up, you are guaranteed uninterrupted interoperability.

Core Advantages Over Competitor Solutions

• Superior Signal Integrity: While many competitors struggle to maintain RF clarity when fully loaded, the HDC-7004 retains an aggressive MER of ≥ 40 dB and ACLR of -60 dBc, ensuring pristine artifact-free transmission.

• Comprehensive Simulcrypt Scrambling: Built-in capability to handle up to 4 CA systems simultaneously without requiring expensive supplementary hardware or hidden licensing fees.

• Hybrid Output Architecture: Outputs the processed multiplexes via both RF (DVB-C) and IP (4x MPTS), providing crucial flexibility for operators transitioning from legacy coaxial networks to IPTV.

Expert German Engineering & Support

When you choose BLANKOM, you invest in maximum reliability. We provide an excellent price-to-performance ratio backed by highly competent technical support directly from our headquarters in Germany. Your infrastructure is supported by engineers who understand the critical nature of zero-downtime broadcasting.

• 4x DVB-S/S2/S2X Tuner Inputs (L, KU, C-Band) – (DVB-T/T2/C/ISDB-T/ATSC-T option)
• Up to 128 IP Inputs (SPTS/MPTS) via GbE
• 4x Adjacent DVB-C QAM RF Outputs
• 4x MPTS IP Outputs over UDP/RTP
• Integrated Multiplexer & DVB-CSA Scrambler

 

Core Processing & Architecture

• All-in-One Processing Core: Integrates advanced demodulation, multiplexing, scrambling, and modulating functions into a single 1U chassis.
• Quad-Group Architecture: Delivers 4 dedicated groups of multiplexing, 4 groups of DVB-CSA scrambling, and 4 adjacent DVB-C QAM modulated carriers.
• Dual Output Architecture: Outputs multiplexed content simultaneously as DVB-C RF and 4x MPTS IP streams, ensuring maximum flexibility for hybrid Headend operations.
• Energy-Efficient & Compact Form Factor: Consumes only 25.4 W of power while housed in a standard 19-inch 1U rack-mountable chassis, significantly reducing operational costs and conserving critical rack space.

 

Tuner & Decryption Capabilities

• Selectable Tuner Configurations: Available to order with either DVB-S/S2/S2X tuner inputs (supporting PLS and Multi-Stream) or multi-mode switchable DVB-T/T2/C/ISDB-T tuners or ATSC-T tuners.
• Modular Demodulation Design: Features a pluggable module architecture incorporating 4x RF inputs (with loop-through out)
• Integrated Scrambling & CAS Flexibility: Supports up to 4 simulcrypt CA systems simultaneously (ETR289, ETSI 101 197, ETSI 103 197) and allows for both local and remote connections to Conditional Access Systems (CAS).
• BISS Descrambling: Native support for BISS descrambling protocols for secure broadcast feeds.

 

IP & Media Interfaces

• High-Capacity IP Ingestion: Ingests up to 128 IP streams (MPTS or SPTS) over UDP and RTP protocols via a Gigabit Ethernet port, fully compatible with IGMP V2/V3 multicast routing.
• IP Streaming Outputs: Provides 4 independent MPTS IP outputs over UDP and RTP protocols (multicast).
• USB Media Broadcasting: Features direct Transport Stream (TS) playback and broadcasting capabilities via the integrated USB port (supports USB 2.0, FAT32 formatting).

 

Advanced Multiplexing & Signal Manipulation

• Broadcast-Grade RF Output: Delivers 4 adjacent QAM carriers (compliant with DVB-C EN 300 429 and ITU-T J.83 A/B/C) with an exceptional Modulation Error Ratio (MER) of ≥ 40 dB and ACLR of -60 dBc, ensuring pristine signal quality.
• Advanced Stream Manipulation: Engineered with precision PCR adjusting, robust A/V PID filtering, and comprehensive PID remapping (supporting up to 180 PIDs per channel).
• Automated SI/PSI & LCN Processing: Features automatic generation and rebuilding of PSI/SI tables and supports Logical Channel Numbering (LCN) generation and insertion (auto or manual).
• Precise Timing & Synchronization: Integrates IPTV synchronization and NTP to TDT (Time Data Table) conversion to eliminate network jitter and maintain broadcast stability.

 

Control, Management & Maintenance

• Intuitive Web Management: Complete configuration and monitoring via a responsive, web-based Network Management System (NMS).
• Streamlined Maintenance: The Web GUI allows for immediate remote device rebooting and provides an easy, straightforward process for updating both the motherboard and tuner board.
• Future-Proof Upgradability: Equipped with a dedicated USB port for straightforward CPU and FPGA firmware upgrades, ensuring the hardware adapts seamlessly to future broadcast requirements.

 

• System Diagram

• Application Examples

• Front and Rear Panels of HDC-7004

• Application Diagram

• Technical Specifications

• FAQ (Frequently Asked Questions)

• Downloads, Links

• System Diagram

• Application Examples

• Cable TV Headends: Seamlessly inject high-quality satellite programming into local DVB-C cable networks.

• Hospitality & Institutional Networks: Distribute premium satellite and IPTV content throughout hotels, hospitals, and corporate campuses.

• Hybrid IP & RF Distribution: Bridge the gap between legacy coaxial RF networks and modern IPTV infrastructures.

• Network Expansion: A highly scalable Transmodulator perfectly suited for gradually adding new channel packages to existing systems.

• Maritime and Cruise Ship Distribution: Ideal for marine environments where satellite signals are received via stabilized antennas and distributed to passenger cabins through the ship’s existing coaxial infrastructure.

• Multi-Dwelling Units (MDUs) and Gated Communities: Provides a centralized, highly cost-effective method to distribute premium satellite programming to hundreds of residential units without the need for individual satellite dishes or complex wiring.

• Remote Industrial and Offshore Camps: Ensures reliable entertainment and information distribution for personnel in isolated locations, such as oil rigs or mining camps, where robust, 24/7 equipment operation is strictly required.

• Regional ISPs and Fiber/WISP Operators: Enables independent internet service providers to seamlessly integrate linear television packages into their service offerings, leveraging the HDC-7004’s IP-to-RF bridging capabilities.

• Large-Scale Hospitality and Entertainment Venues: Perfect for sports complexes, casinos, and expansive resorts that require the centralized decoding and distribution of numerous high-definition satellite feeds to localized displays via standard DVB-C.

 

 

• Front and Rear Panels of HDC-7004

BLANKOM HDC-7004 DVB Transmodulator front

BLANKOM HDC-7004 DVB Transmodulator rear

• Application Diagram

• Technical Specifications

 

Input	IP-Input	512 streams from GbE input by 1000 Mb/s Ethernet Port
	Transport Protocol	TS over UDP/RTP, unicast and multicast, IGMP V2/V3
	Transmission Rate	max 84 Mbps for each IPTV input
	4x DVB-S2x Tuner/demod	L-Band: Most common standards supported, DiSEqC 4 SAT pos.
Multiplexing	Remapping	Max. 512 PIDs per Channel
	Output Channel	4 adjacent -> 4x IP out as MPTS (from 4 MUX)
	Functions	PID remapping (auto / manually)
		PCR restamping
		PSI/SI table automatically generating NIT, LCN generation and inserting, auto or manual
Encryption Parameters	Max Simulcrypt CA		4 Systems
	CA Standard		ETR289, ETSI 101 197, ETSI 103 197
	Connection		Local/remote connection to CAS
Modulation Parameters	QAM Channel		4 adjacent carrier
	Modulation Standard		DVB-C Annex A/C and B   EN300 429/ITU-T J.83A/B
	Symbol Rate		5.0…9.0 MSps, 1 kSps steps, FEC
	Constellation		16, 32, 64, 128, 256QAM dep. On A/C or B
	FEC		RS (204, 188) inner/outer configurable
RF Output	Interface	1 F-type output port for 4 QAM channels, 75 Ω impedance
	RF Range	30…1000 MHz, 1 kHz steps
	Output Level	-10 dBm…+0 dBm (87…107 dBµV), 0.1 dB steps
	MER	≥ 40dB
	ACLR	-60 dBc
TS output	4 MPTS IP output over UDP/RTP multicast by  1×100/1000M Gbit-Ethernet Port
System	Network management software (NMS) support (100BaseT) and USB port upgrade support
General	Dimensions	19’’ 1U:  430mm×220mm×44mm (WxLxH)
	Weight	3.5kg
	Temperature	0…45℃ (operation), -20…80℃ (storage)
	Power Supply	AC 100V±10%, 50/60Hz or AC 220V±10%, 50/60Hz
	Consumption	25.4W

Specifications are subject to change without prior notice.

• FAQ (Frequently Asked Questions)

What is the primary operational function of the BLANKOM HDC-7004 DVB-C Transmodulator?

The BLANKOM HDC-7004 is a professional headend unit designed to receive digital input transport streams (such as satellite DVB-S/S2/S2X, terrestrial DVB-T/T2, or IP inputs depending on the specific hardware module layout) and modulate them directly into standard DVB-C (QAM) Radio Frequency (RF) channels for distribution over traditional or existing coaxial cable networks.

How many independent DVB-C RF output carriers can be generated by a single HDC-7004 unit?

The hardware architecture of the HDC-7004 is engineered to generate up to 4 adjacent or non-adjacent DVB-C QAM RF carriers simultaneously from a single 1U chassis. This allows cable operators to distribute multiple TV bouquets or extensive channel groups over a single physical coaxial output port efficiently.

Which QAM constellations and symbol rates are supported by the HDC-7004 modulation layer?

The integrated DVB-C modulator comprehensively supports all standard ITU-T J.83A and J.83B QAM constellations, including 16QAM, 32QAM, 64QAM, 128QAM, and 256QAM. The symbol rate can be configured precisely via software parameters up to 7.0 Msps per carrier, ensuring full compliance with standard digital televisions and QAM set-top boxes.

What is the RF output frequency range and configuration flexibility provided by the chassis?

The device features a highly agile RF output section covering the standard CATV frequency band from 50 MHz up to 960 MHz. The output frequencies and attenuation parameters can be adjusted individually per carrier through the management control panel, allowing seamless channel planning alongside existing analog or digital carrier allocations.

Can the HDC-7004 accept IP transport streams as inputs for QAM modulation?

Yes, depending on the internal factory hardware configuration and input module provisioning, the HDC-7004 can ingest IP transport streams carried over standard UDP or RTP protocols. This allows it to act as an edge IP-to-QAM modulator, translating modern IPTV streaming feeds into traditional digital cable channels for legacy building distributions.

Does the transmodulator perform transparent pass-through of the underlying video and audio codecs?

Yes. The HDC-7004 performs pure, transparent modulation at the physical and transport stream layers. It does not decode or re-encode the video or audio payload, maintaining absolute data integrity whether the source signals are encoded in MPEG-2, H.264 (AVC), or H.265 (HEVC), and supporting SD, HD, and 4K UHD resolutions flawlessly.

How is the RF signal quality optimized to prevent pixelation over long coaxial distribution paths?

The HDC-7004 incorporates a high-performance RF modulation circuit that guarantees an excellent MER (Modulation Error Ratio) and exceptionally low phase noise. This high signal-to-noise ratio ensures that the modulated QAM carriers can travel through complex local coaxial distribution taps, splitters, and launch amplifiers with minimal degradation.

How is remote administration and telemetry configuration implemented for this device? Is SNMP supported?

System configuration, RF frequency assignment, attenuation settings, and input locking status are managed exclusively via an embedded WebGUI using a standard web browser through a dedicated, independent Ethernet management port. This model line does not support SNMP management, prioritizing low-overhead web-based administration and an isolated, secure control plane.

What cooling framework and chassis dimensions are utilized to ensure stable 24/7 continuous operation?

The system is built for relentless 24/7/365 commercial headend use, housed in a standard 19-inch 1U rack-mount industrial chassis. The enclosure leverages optimized internal airflow paths and intelligent active cooling fans to maintain safe internal operating temperatures even under maximum channel conversion loads.

Are there dual power supply options or specific ordering configurations available for hospitality deployments?

Yes, detailed Ordering Guides are accessible via irenis-blankom.com to define specific input hardware layouts (such as pure RF-to-QAM vs. IP-to-QAM setups). For mission-critical hospitality, cruise ship, or corporate networks, the device can be configured with dual redundant power supplies to safeguard against primary power line failures.

 

 

 

 

• Downloads, Links

BLANKOM HDC-7004 Data Sheet

 

BLANKOM HDC-7004 in www.blankom.de