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DTA-2115B - All-Standard VHF/UHF/L-Band Modulator for PCIe  


All-Standard VHF/UHF/L-Band Modulator for PCIe

High-end 0-2GHz modulator for virtually all cable, satellite and terrestrial digital-TV modulation standards. The DTA-2115B can be used as a single 72MHz bandwidth modulator, or as eight independent 8MHz modulators.


Key Characteristics

RF frequency VHF, UHF, L band
32 to 2186MHz
Mod. bandwidth Up to 72MHz
8MHz for 8-channel firmware
RF output level -60 to 0dBm
Typical MER 42dB
Phase noise <-116dBc @ 10kHz

Inputs and Outputs

RF out - main 50-Ω SMA
RF out - monitor 75-Ω F female
PCI Express PCIe gen3 x1

Modulation 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
DTC-385-HW8CH 8-channel firmware that transforms the DTA-2115B into 8 independent 8MHz modulators, each fully agile in the VHF and UHF band
GOLD option All options in this table, plus any future option developed for the DTA-2115B

PC Support

OS Windows 10, 11
Windows Server 16, 19, 22
Linux ≥2.6.18, 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 (option for StreamXpress)
T2Xpress DVB-T2 signal generator with full control of all modulation parameters and with integrated channel simulator
C2Xpress DVB-C2 signal generator
TmmXpress ISDB-Tmm signal generator
SpRcApi StreamXpress remote control API for automated playout and modulation
DekTec SDKs Create your own full-custom application with modulated output via the DTA-2115B


DTA-2115B-SP4.107Stock: 25+
All-standard VHF/UHF/L-band modulator for PCIe with StreamXpress player software.
DTA-2115B-GOLD7.639Stock: 25+
All-standard VHF/UHF/L-band modulator for PCIe with all current and future modulation options, channel simulation and StreamXpress including remote control.
Includes the 8-channel 8-MHz firmware option.
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 in VHF, UHF and L-band.
  • Excellent signal quality through direct digital synthesis of the RF output signal and an on-board ultra-low phase-noise oscillator.
  • Flexible architecture lends itself for advanced modulation schemes, e.g. ATSC 3.0, DVB-S2X, multi-segment ISDB-Tmm, and even 64MHz DVB-C2 channel bonding.


  • High-end general-purpose test modulator in your R&D lab for developing and qualifying DTV equipment, or for experimentation with new RF modulation schemes.
  • Automatic test equipment (ATE) for tuners, demodulator chips, receivers, TV sets etc.
  • Play-back of arbitrary I/Q sample files that are recorded or pre-computed (e.g. with MATLAB), with a bandwidth up to 72MHz.

Standard Firmware - 1x 72MHz Modulator

Implements a universal modulator with 72MHz bandwidth, agile over VHF, UHF and L-band. The functional block diagram of this firmware is shown below. Special features include GPS synchronization to 1pps and 10MHz inputs, and phase noise emulation.

DTA-2115B 72MHz firmware block diagram

Firmware Option - 8x 8MHz Modulators

The DTC-385-HW8CH option, also included in DTA-2115B-GOLD, enables the 8x 8MHz firmware variant (select with DtInfo). It contains 8 independent 8MHz modulators that can be set to different (or the same) modulation standards, e.g. 2x DVB-T2, 2x DVB-C, 3x ATSC and 1x ISDB-T.

DTA-2115B 8x 8MHz firmare block diagram

Each of the 8 modulators is fully agile over the VHF and UHF band. The carriers can be positioned anywhere in this band, independent of each other. The picture below shows an example of an actual spectrum of 8 DVB-C carriers between 400 and 600MHz.

Spectrum with 8 carriers

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