DTU-245B – FantASI USB-2 ASI/SD-SDI Input+Output Adapter

Model: DTU-245 Manufacturer: DekTec
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$1,830.00 USD$4,990.00 USD



All USA orders will be shipped from our USA warehouse.
All other orders will be shipped from Canada.

Ordering Information

Universal USB-2 ASI/SDI Input+Output adapter

Universal USB-2 ASI/SDI Input+Output adapter with StreamXpress and StreamXpert Lite

Universal USB-2 ASI/SDI Input+Output adapter with StreamXpress and StreamXpert

Universal USB-2 ASI/SDI Input+Output adapter with StreamXpress, StreamXpert and SdEye

Universal USB-2 ASI/SDI Input+Output adapter with VF-Rec stream recorder, StreamXpress, StreamXpert and SdEye

DTU-245B Features

  • Convenient, compact USB adapter that can be used to capture and generate MPEG-2 transport streams (DVB- ASI) and uncompressed serial digital video (SDI). Ideally suited for use with a laptop, but convenient with a standard PC or server as well.
  • USB powered – no power supply required
  • Independent operation of DVB-ASI / SDI  input and output:
    • Full-duplex: combined bit-rate 0-160 MBps
    • Half-duplex: Full DVB-ASI and SDI bit-rate range 0-214 MBps
  • 16-Mbytes local hardware buffer for sustained real-time streaming
  • The DTU-245B-SXP comes with StreamXpert for Real-time analysis, monitoring and recording of MPEG-2 transport streams; and StreamXpress for ASI/SDI play out
  • The DTU-245B-SY-SXP includes all software of the DTU-245-SXP plus  SdEye for SDI analysis and monitoring

DTU-245B Block Diagram:

DTU-245 - FantASI USB-2 ASI / SD-SDI Input+Output Adapter


  • General-purpose USB adapter for capturing, generating and processing of ASI and SDI streams
  • On-site recording and analysis
  • Portable demo set
  • DTU-245B-SXP:  Portable ASI/SDI play-out, recording and decoding
  • DTU-245B-SY-SXP:  Complete bundle for portable Transport Stream and SDI analysis, monitoring and recording, as well as  ASI / SDI play-out


Connector 2x 75Ω BNC (1 Input, 1 output)
Physical Layer EN50083-9
Bit Rate Range 0…160 Mbit/s – in full duplex mode
0…214 Mbit/s – in half-duplex mode
Packet Size in Bytes 188 or 204
Physical Layer SMPTE 259M
Bit Rate 270 Mbit/s
#Bits 8 or 10 bit
Power (through USB-2) 5V, 400mA max
Dimensions in mm (LxWxH) 87 x 104 x 30
PC Support:
PC USB port USB-2.0
OS Windows 7, 8, 10, 11; Windows Server 12, 16,19
Linux ≥ 2.6.18, 3x, 4x, 5x
Processor Core i5 minimum, Core i7 recommended, or equivalent AMD CPUs


 1. StreamXpress – Playout Software

  • Low-cost, high-performance playout software that supports all DekTec output adapters
  • Endless play with optional automatic correction of continuity-counter, PCR/PTS/DTS and TDT/TOT fields
  • SOAP-based remote control to automate StreamXpress operations (DTC-302-RC option)
  • Saving and restoring playout parameters using XML-based settings file
  • Reproducible injection of errors in the transport stream with adjustable error rate
  • Easy-to-use control of modulation and channel simulation parameters

2StreamXpert – 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

3.  StreamXpert Lite – Light-weight version of StreamXpert for viewing and recording transport-stream contents, and for decoding audio and video.

4. SdEye – SDI Analysis and Monitoring Software

  • Cost-effective real-time waveform analyser for SMPTE-259M signals
  • Displays picture, YCbCr / RGB waveforms, vectorscope and peak meter
  • Various picture display modes: interlaced, top- or bottom-field only, top and bottom field, full SDI frame
  • User can select whether he wants to display Y, Cb, Cr, R, G and/or B components in the picture
  • Contemporary GUI with quick access buttons and user-selectable window layout
  • Supports all DekTec SDI-capable adapters including bus-powered USB-2 units for portable SDI monitoring

5. VF-Rec – Advanced transport-stream/SDI recorder

  • Advanced recorder for TS, ETI, SDI, I/Q samples and T2MI.
  • Allows to do continuous recording and remote control through SNMP
  • Record to a single file, to multiple files or continuous
  • SDI recording 10-bit full frame, up to 3G-SDI
  • Remote monitoring and control through SNMP

Additional information

Weight 2 lbs