DVB-C means Digital Video Broadcasting – Cable, a European standard for the transmission of digital TV signals via coaxial cable. It allows the transmission of video, audio, and data in high quality through QAM (Quadrature Amplitude Modulation), being widely used in pay-TV, set-top boxes, IPTV systems, and RF receiver testing.
DVB-C is the link between the analog world of coaxial cable and the digital quality of image and sound.
📋 Technical Specifications of DVB-C
| Parameter | Typical value or description |
|---|---|
| Modulation | QAM (16, 32, 64, 128, 256) |
| Bandwidth | 8 MHz per channel (Europe), 6 MHz (some regions) |
| Data rate | Up to 38 Mbps per channel (QAM256) |
| Physical interface | 75 ohm coaxial cable with F connector |
| Link layer | MPEG-2 TS (Transport Stream) |
| Specifications | ETSI EN 300 429 |
🧪 Applications of DVB-C in Test Environments
- Functional testing of DVB-C receivers (set-top boxes)
- Validation of coaxial RF input interfaces
- Simulation of digital TV signals via QAM modulation generators
- Decoding robustness tests in scenarios with noise and attenuation
- Quality control of boards with integrated DVB-C tuners
⚙️ How AJOLLY Testing Implements DVB-C Testing
AJOLLY Testing designs and validates specific testing solutions for DVB-C with a high degree of automation and traceability, ideal for production lines or validation laboratories.
🛠️ Benches with RF Generators and Receivers
- DVB-C standard generators with configurable channels (QAM 64/128/256)
- Control of RF power, BER (bit error rate), and injected noise
- Automatic capture of DUT response (via HDMI, I²C, UART, or IP)
📊 Test Software with Performance Analysis
- Automated sequence of scans, locking, and service reading
- Validation of MPEG tables (PAT, PMT, NIT, EPG)
- Logging by serial number and DUT firmware
📁 Documentation and Compliance
- Test reports according to ETSI and ISO standards
- Integration with MES for traceability and version control
- Support for DVB pre-certification testing in partner laboratories
With AJOLLY Testing, DVB-C testing ceases to be manual and uncertain — and transforms into a technical, documented, and reliable process.