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DTU-315 - All-Standard 0-2GHz Modulator for USB-3  


All-Standard 0-2GHz Modulator for USB-3

Modulation has never been so easy and so beautiful. 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.


Key Characteristics

RF frequency VHF, UHF, L band
36 to 2150MHz
Mod. bandwidth Up to 70MHz
RF output level -45 to -25dBm

Inputs and Outputs

RF out 75-Ω micro-BNC female
USB USB 3.2 Gen 1, micro-B

Also called SuperSpeed USB

Power USB powered

No separate power supply required

Modulation Standards

Standards included with base product ATSC 8VSB
DVB-T, DVB-T2 single PLP
Options ATSC-M/H
ATSC 3.0
DAB(+), DRM(+), T-DMB
DVB-T2 multi PLP
More options I/Q sample playout
AWGN insertion
Multipath echo simulation
Remotely controlled playout
GOLD option All options in this table, plus all future modulation options developed for the DTU-315

PC Support

PC USB port USB 3.2 Gen 1 required

Also called USB 3.0 or 3.1 Gen 1

DTU-315 will not work with USB 2

OS Windows 7 minimum
Windows 10 recommended
Linux ≥2.6.31, 3.x, 4.x, 5.x
Processor Core i5 minimum
Core i7 recommended

Or equivalent AMD CPUs


StreamXpress Play TS files and control modulation parameters
XpressSim Channel simulator
(StreamXpress option)
T2Xpress DVB-T2 signal generator, full control of modulation parameters and integrated channel simulator
C2Xpress DVB-C2 signal generator, full control of modulation parameters and integrated channel simulator
TmmXpress ISDB-Tmm signal generator, full control of modulation parameters and integrated channel simulator
SpRcApi StreamXpress remote control API for automated playout and modulation
DekTec SDKs Create your own full-custom application with modulated output via the DTU-315


DTU-315-SP2.942Stock: 25+
All-standard 0-2GHz modulator for USB-3 with StreamXpress player software.
DTU-315-GOLD6.006Stock: 25+
All-standard all-band modulator for USB-3 with all current and future modulation options, channel simulation and StreamXpress including remote control.
1U-height 19-inch rackmount kit for holding up to eight DTU-315 units.
Modulation Options

Prices exclude applicable sales tax, shipping charges and customs duties. Quantity discounts may be available, please request a quotation.


  • Supports all constellations and modulation modes for each supported standard.
  • Excellent signal quality through direct digital synthesis of the RF output signal.
  • 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.

DTU-315 block diagram

Key Features of the DTU-315 Explained

The presentation below explains key features and benefits of the DTU-315.

DTU-315 in Action

A tablet drives the DTU-315. The RF output signal is shown on a spectrum analyzer.

DTU-315 driven by a tablet


A rackmount kit (DTR-315-RACK) is available to install up to eight DTU-315 units in a 19" rack.

DTU-315 in 19-inch rack-mount kit

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