• Description
  • Specifications
  • Ordering Info


The DTU-315 is a portable modulator for satellite, terrestrial and cable, all in a single device.
A good fit for laptop or tablet, but convenient with desktops and server PCs too.


  • Supports all constellations and modulation modes for each supported standard.
  • Excellent signal quality through direct digital synthesis of the RF output signal.
  • RF frequency: VHF, UHF, L band, 36 to 2150MHz
  • Mod. bandwidth: up to 70MHz
  • RF output level: -45 to -25dBm
  • No power supply required: A single USB-3 connection supplies power, real-time data and control.


  • General-purpose test modulator in your R&D lab for developing, qualifying or repairing any equipment with an antenna input.
  • Portable demo set for TV receivers, easy to carry to customer demos, trade shows, etc.
  • TV distribution using modulated signals in shops, hotels, hospitals etc.

Block Diagram

The DTU-315 reads data from USB and forwards it to a baseband modulator, a channel filter, an optional channel simulator and an upconverter. The digital RF signal is converted to analog with a high-speed D-to-A converter and output on a micro-BNC connector.



Modulation Standards (included)

  • DVB-C
  • DVB-S, DVB-S2
  • DVB-T, DVB-T2 single PLP
  • QAM-B, QAM-C

Modulation Standards (optional)

  • ATSC-M/H
  • ATSC 3.0 (in development)
  • CMMB
  • DAB(+), T-DMB
  • DVB-C2
  • DVB-S2X
  • DVB-T2 multi PLP

More options

  • I/Q sample playout
  • AWGN insertion
  • Multipath echo simulation
  • Remotely controlled playout

Gold option

  • All options above plus all future modulation options developed for the DTU-315

DTC-300 – StreamXpress Playout and Control Software

  • Low-cost, high-performance playout software
  • 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

PC Requirements

  • PC USB port: USB 3.0 required. DTU-315 will not work with USB-2
  • OS: Windows 7 minimum, Windows 10 recommended. Currently not supported on Linux
  • Processor: Core i5 minimum, Core i7 recommended, Or equivalent AMD CPUs



Click on “DTU-315 Datasheet” for technical specifications.

Ordering Info

All USA orders will be shipped from our USA warehouse. 

All other orders will be shipped from Canada.


DTU-315   –   All-standard all-band modulator for USB-3

DTU-315-SP   –   All-standard all-band modulator for USB-3 with StreamXpress player software

Available Options

  • DTC-377-MH  –  ATSC-MH modulation option
  • DTC-305-CM – XpressSim channel-modelling option
  • DTC-370-ISDB – ISDB-T modulation option
  • DTC-382-Tmm  –  ISDB-Tmm modulation option
  • DTC-371-IQ – IQ samples playout option
  • DTC-374-DTMB – DTMB modulation option
  • DTC-376-DAB – DAB modulation option
  • DTC-375-CMMB – CMMB modulation option
  • DTC-378-T2 – DVB-T2 multi PLP modulation option
  • DTC-379-C2 – DVB-C2 modulation option
  • DTC-383-S2X – DVB-S2X modulation option
  • DTC-373-IS – ISDB-S modulation option

DTU-315-GOLD  –  All-standard all-band modulator for USB-3 with all options above and future modulation options, channel simulation and StreamXpress including remote control.

Related Products