Description
All USA orders will be shipped from our USA warehouse.
All other orders will be shipped from Canada.
The DTU-331 series offers a comprehensive RF probe designed to cater to a variety of digital signal analysis needs across a broad frequency range of 0-3GHz. The DTU-331 is the base model, perfect for USB-3 connectivity and all-standard DVB signal analysis. The DTU-331-SL includes StreamXpert Lite, offering a more streamlined analysis experience, while the DTU-331-SX comes with the full StreamXpert package for in-depth transport stream analysis. For those requiring specialized analysis tools, the DTU-331-XPRT includes software for ATSC 3.0, DVB-C2, and DVB-T2 signal analysis, and the DTU-331-XPRT-SX combines all these with StreamXpert for the ultimate analysis toolkit.
ORDERING INFO
DTU-331 – All-standard 0-3GHz RF probe for USB-3
DTU-331-SL – All-standard 0-3GHz RF probe for USB-3 with StreamXpert Lite
DTU-331-SX – All-standard 0-3GHz RF probe for USB-3 with StreamXpert
DTU-331-XPRT – All-standard 0-3GHz RF probe for USB-3 with Atsc3Xpert, C2Xpert, T2Xpert analyzer software
DTU-331-XPRT-SX – All-standard 0-3GHz RF probe for USB-3 with Atsc3Xpert, C2Xpert, T2Xpert and StreamXpert analyzer software
Dual Tuners: 8 & 60MHz
Wide Frequency Range: VHF, UHF, L- and S-band (42 .. 3220MHz)
Advanced Analytics with SDR Technology
FEATURES
- Broad Modulation Standards Support: Demodulates cable, terrestrial, satellite, and even arbitrary RF signals.
- Dual Tuners: 8MHz tuner optimized for cable/terrestrial standards and 60MHz tuner designed for satellite reception.
- Use of SDR: Flexibility beyond traditional modulators, advanced RF measurements, adaptable to evolving standards.
- I/Q Sampling: Serves as an I/Q sampler for RF signals up to 60MHz bandwidth in the 42 to 3220MHz range.
- USB 3.0 Type C: Enables reversible connection and powers device through USB.
- Free SDK (DTAPI, Windows only).
DTU-331 Applications
- Comprehensive analysis and monitoring of modulated DTV signals.
- Terrestrial DTV measurements in the field.
- Measurement receiver for lab or field ex-periments and SDR research.
- Educational tool: Explore DTV standards.
Block Diagram
The DTU-331 is an all-band, all-standard SDR receiver based on a dual tuner architecture. A satellite tuner with a 9..60MHz bandwidth enables reception of DVB-S signals, while a second tuner with a bandwidth up to 8MHz adds support for terrestrial and cable standards. A front-end, with an optional RF mixer in the path, allows down-mixing of terrestrial/cable signals located in the L-band before being fed to the 8MHz tuner. The same RF mixer can also be used to downmix satellite signals in the S-band back to the L-band frequencies, so that they can be received with the 60MHz tuner.
The output of the tuners is converted to 16-bit IQ-samples with Analog-to-Digital converters and passed through a low-pass filter and a sample rate converter, which helps to clean up and prepare the signal for processing. At this stage, the IQ samples can be demodulated with the SDR demodulation software in the DekTec SDK (DTAPI) or alternatively, they could be recorded to disk or read into your own SDR application.
SPECIFICATIONS
| RF Input | |
|---|---|
| Frequency range | VHF, UHF, L- and S-band (42 .. 3220MHz) |
| Bandwidth | 0.85MHz (DVB-CID) 1.7, 5, 6, 7 & 8MHz (Terrestrial) 9 .. 60MHz (Satellite) |
| Level measurement | -90 .. -20dBm |
| MER | 1 .. 42dB (measurement range) |
| Sample rate | 1 .. 80Msps Max. 40Msps when using 8Mhz tuner |
| Inputs/Outputs | |
| RF connector | 75-Ω micro-BNC female |
| USB | USB 3.2 Gen 1, Type-C. Also called SuperSpeed USB |
| Power | USB powered. No separate power supply required |
| Other Specifications | |
| Power Consumption | 6.5W maximum |
| OS | Windows 10, 11 |
| Modulation Standards | ATSC 1.0, ATSC 3.0, DAB(+), DVB-C, DVB-C2, DVB-CID, DVB-S, DVB-T, DVB-T2, I/Q samples, ISDB-T, QAM-B (J.83 Annex B), QAM-C |
Software Description
1. StreamXpert – Transport Stream Analyser Software
- Real-time analysis, monitoring and recording of MPEG-2 transport streams
- Recording based on duration, size or manual
- Provides detailed statistics on the PIDs, services and tables found in the transport stream
- Displays PIDs, services, tables, descriptors, stream information and PID-grid (compact overview of all PIDs)
- User definable TR 101 290 templates
- PCR analysis
- Measurement of bitrates, PCR-accuracy and interval
- Integrated SD/HD video and audio decoder with support for MPEG-2, AVC/H.264, HEVC/H.265, AVS, 4:2:2 and 10 bit video streams and MP1 / MP2 / (HE-)AAC / Dolby AC3 / Dolby AC4 audio
- Deep decoding of PSI, DVB-SI, DVB-RCS and ATSC-PSIP tables and descriptors
- Closed captions decoding
- SI decoding with user templates, Dolby AC4 analysis, multi-monitor support
- Support for analysing TS-over-IP streams via a DTA-2160 / DTA-2162 or a local network port
- The world’s most cost-effective and user-friendly transport-stream analyser
2. StreamXpert Lite – Light-weight version of StreamXpert for viewing and recording transport-stream contents, and for decoding audio and video.
| StreamXpert | StreamXpert Lite | |
|---|---|---|
| Display | ||
| Ribbon based GUI | ✓ | ✓ |
| List with properties of all PIDs | ✓ | – |
| List with properties of all services | ✓ | partial |
| List with properties of all tables | ✓ | – |
| Video Decoding | ||
| HEVC | ✓ | ✓ |
| AVC | ✓ | ✓ |
| AVS | ✓ | ✓ |
| MPEG-2 | ✓ | ✓ |
| 4:2:2 | ✓ | – |
| 10-bit | ✓ | – |
| Full screen mode | ✓ | ✓ |
| Multi-monitor support | ✓ | ✓ |
| Audio Decoding | ||
| HE-AAC | ✓ | ✓ |
| AAC | ✓ | ✓ |
| E-AC-3 | ✓ | ✓ |
| AC-3 | ✓ | ✓ |
| MPEG-1 Layer II | ✓ | ✓ |
| Supported Interfaces | ||
| DekTec input adapters | ✓ | ✓ |
| PC network ports | ✓ | ✓ |
| Advanced | ||
| Custom table and descriptor templates | ✓ | – |
| PID Grid, graphical overview of all PIDs | ✓ | – |
| Dolby AC-4 analysis | ✓ | – |
| Recording | ||
| Manual mode | ✓ | ✓ |
| Size based | ✓ | ✓ |
| Duration based | ✓ | ✓ |
| Measurement and Compliance | ||
| TR 101 290 priority 1, 2 and 3 | ✓ | – |
| Bitrate | ✓ | partial |
| PCR graphs | ✓ | – |
| PCR accuracy | ✓ | – |
| PCR interval | ✓ | – |
| PCR frequency offset | ✓ | – |
3. Atsc3Xpert – ATSC-3 Reception and Analysis Software
- Real-time DVB-T2 analysis software for use with DTA-2131B (PCIe) and DTU-331 RF probes.
- Shows all T2 parameters, signal details and RF measurements in a concise user interface.
- Gathers statistics about number of LDPC iterations required to correct all errors and displays LDPC iterations history in a graph.
4. T2Xpert – DVB-T2 Analysis Software
- Real-time DVB-T2 analysis software for use with DTA-2131B (PCIe) and DTU-331 RF probes.
- Shows all T2 parameters, signal details and RF measurements in a concise user interface.
- Gathers statistics about number of LDPC iterations required to correct all errors and displays LDPC iterations history in a graph.
