Dual Tuners: 8 & 60MHz
Wide Frequency Range: VHF, UHF, L- and S-band (42 .. 3220MHz)
Advanced Analytics with SDR Technology
Description
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
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
Options -XPRT enables:
. Atsc3Xpert
. T2Xpert
. C2Xpert
. DTAPI RF measurements
Ordering Info
All USA order will be shipped from our USA warehouse.
All other orders will be shipped from Canada.
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
Software Description
- 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
Ribbon based GUI ✓ ✓
Display
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.
