4 ch DVB-S-S2 Modulator v.2.0

4 ch DVB-S/S2 Modulator v2.0 is a professional-grade satellite modulation platform engineered for broadcasters, MVDS operators, digital headend providers and high-capacity RF distribution systems. Supporting modulation formats from QPSK and 8PSK to 16APSK, it enables efficient transmission of high-bitrate DVB-S2 carriers. With four fully independent ASI-fed modulation channels in a single chassis, this device is ideal for building multi-carrier uplinks, MVDS clusters or satellite distribution networks.

Operating within the 950–2150 MHz L-band, each channel offers adjustable symbol rates up to 44 Msym/s (35 Msym/s for 16APSK) and delivers clean, stable RF output with MER above 30 dB. With Ethernet-based remote control and 24/7 operational stability, the modulator ensures outstanding reliability for continuous broadcast environments. Integrated RF attenuation, robust power protection and precise signal shaping make it suitable for professional DVB-S/S2 deployments of any scale.

✅ Quad-channel DVB-S2 modulation for high-density uplink systems

With four independent DVB-S/S2 modulation channels, the device allows operators to broadcast four separate L-band carriers simultaneously. This dramatically reduces rack space and hardware complexity compared to using four single-channel modulators. The architecture is ideal for multi-transmitter MVDS systems, satellite uplinks, backbone RF relays and digital headend clusters that require high channel density.

✅ Advanced QPSK/8PSK/16APSK support for high-capacity DVB-S2 networks

Support for constellations up to 16APSK enables significantly higher throughput compared to standard QPSK or 8PSK. This allows operators to pack more HD services, multiplexes or MPTS streams into each RF carrier. Adjustable roll-off factors (0.20 / 0.25 / 0.35) allow advanced bandwidth optimization for dense spectrum environments.

✅ L-band output stability with MER >30 dB across all channels

The modulator delivers consistently high MER values exceeding 30 dB, ensuring clean constellation diagrams for all four carriers. This level of RF accuracy is crucial for stable DVB-S2 demodulation in both professional and consumer receivers. Even in multi-carrier setups, the modulator maintains excellent signal quality, making it suitable for long-range RF distribution and MVDS broadcasting.

✅ Full Ethernet control with automatic parameter recovery

Remote access via Ethernet (RJ-45) allows complete configuration of each modulation channel, including frequency, symbol rate, constellation, FEC and RF attenuation. Real-time monitoring ensures quick diagnostics and operational transparency. In case of power loss, all parameters are automatically restored from non-volatile memory, guaranteeing uninterrupted broadcasting.

📌 Key features

• 4 independent DVB-S/S2 modulation channels

Each of the four channels operates autonomously, allowing separate settings for constellation, FEC, symbol rate and output frequency. This enables efficient multi-carrier operation without interference between channels. Operators can build compact and scalable uplink systems using a single modulator chassis.

• Wide L-band output range (950–2150 MHz)

The device supports the full L-band spectrum used in satellite distribution and MVDS networks. This ensures compatibility with upconverters, RF combiners and microwave transmitters. Flexible frequency planning improves integration into existing infrastructures.

• QPSK, 8PSK and 16APSK constellation support

The modulator supports DVB-S and DVB-S2 constellations up to 16APSK, enabling higher transport capacity for professional broadcasting. This provides better spectrum utilization and improved efficiency for high-bitrate applications. DVB-S2 carriers benefit from advanced coding and modulation for increased performance.

• Symbol rates up to 44 Msym/s

With support for symbol rates up to 44 Msym/s (35 Msym/s for 16APSK), the modulator is suitable for high-capacity video feeds, HD multiplexes and backbone TV distribution. Adjustable symbol rate options allow precise control over bandwidth and output spectrum shape.

• High MER (>30 dB) for clean, professional RF output

Maintaining MER above 30 dB ensures stable demodulation and high signal quality. This is essential for professional deployments where carrier reliability cannot be compromised. High MER also reduces error rates and improves overall system robustness.

⚙️ Main functions

• Ethernet-based remote control and monitoring

Operators can configure and monitor all four channels through Ethernet using modern management tools. Full access to RF parameters ensures precise modulation control. Remote configuration is invaluable for unmanned headends or distributed broadcast nodes.

• Automatic recovery of parameters after power loss

All operational parameters are saved in non-volatile memory, ensuring automatic restoration after power interruptions. This eliminates the need for manual configuration and guarantees continuous broadcasting.

• Manual RF output power adjustment with integrated attenuation

The modulator includes adjustable attenuation from –47 dB to 0 dB, allowing precise control of output level between 80 and 100 dBµV. This ensures compatibility with amplifiers, RF combiners and upconverter systems. Operators can match RF power to system requirements without external attenuators.

• Built-in electrical protection systems

Integrated protections against over-voltage, over-load and short-circuit conditions safeguard both the modulator and connected equipment. This significantly enhances long-term stability in 24/7 operating environments.

🧩 Applications

• Satellite broadcasting (DVB-S/S2) and RF uplink systems

Ideal for satellite uplinks requiring multiple independent carriers, the modulator ensures stable L-band output and advanced modulation capabilities. Operators can transmit several high-capacity DVB-S2 carriers simultaneously.

• MVDS multi-carrier distribution networks

The 4-channel architecture is perfectly suited for MVDS systems using multiple microwave transmitters. High MER and flexible symbol rates ensure excellent signal propagation and minimal degradation.

• Digital TV headends and hybrid DVB/IP platforms

The modulator integrates easily with encoders, multiplexers and scrambling systems, forming part of a complete DVB-S2 broadcasting chain. IPTV operators can convert IP/ASI streams into multiple satellite-grade RF carriers.

• Broadcast test, laboratory and R&D environments

Thanks to precise RF output control, high MER and support for advanced constellations, the device is suitable for testing satellite receivers and evaluating DVB-S2 demodulation performance.

💡 Why you should buy from us❓

• 1.5 years warranty
• 7 years after-sales support
• Remote support team of engineers
• Discount program for regular customers 🎁

💬 Contact Us

For additional details about the 4 ch DVB-S/S2 Modulator v2.0, feel free to contact our team. We will assist with integration, design recommendations and technical configuration.