• Description
  • Specifications
  • Ordering Info


DTA-115  – Features

  • Multi-standard modulator with support for all popular  QAM-, OFDM- and VSB-based modulation standards
  • All-channel upconverter 47 .. 862MHz covering entire VHF and UHF band
  • Output amplifier with programmable 0 .. 31.5dB attenuator in 0.5dB steps
  • Use DTA-Plus to extend output-level range
  • Independent bi-directional DVB-ASI port
  • Monitor output for direct connection to the antenna input of a digital receiver
  • API is fully compatible with other DekTec
    digital-video output adapters
  • PCI rev 2.2, 32 bit, 33 or 66 MHz bus

 Modulation Standards (included)

  • DVB-C EN 300 429
  • DVB-T / DVB-H EN 300 744
  • QAM ITU-T J.83 Annex A/B/C

 Modulation Standards (optional)

  • DTMB (ADTB-T / DTMB)   GB 20600-2006
  • CMMB   GY/T 220.1/2-2006
  • DVB-T2   EN 302 755
  • IQ   I/Q sample playout
  • DVB-C2 EN 302 769
  • ATSC-M/H
  • DAB(+), T-DMB

DTC-300 – StreamXpress Playout and Control Software (optional)

  • 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

DTC-305-CM   –  Fading and AWGN Simulator  (optional)

  • Software option to add real-time channel simulation to the DTA-116 and to other DekTec modulator cards
  • Addition of Additive White Gaussian Noise (AWGN) with well-defined SNR to the output of DekTec modulators
  • Distortions are applied in the digital domain for consistent operation and repeatability
  • Simulates up to 32 fading paths of either Constant Delay, Doppler, Rayleigh Jakes or Rayleigh Gaussian path distortion on the modulated RF signal
  • Simple interface to add calibrated noise to the output of a DekTec modulator card
  • Noise bandwidth is adjusted to suit the modulation type

DTA-115 Applications

  • True multi-standard test generator
  • Signal validation: check out whether your receivers can handle a new transport stream
  • Modulator replacement

PC Requirements

  • P4@2GHz minimum, or equivalent AMD
  • Core 2@2GHz minimum for ISDB-T, CMMB, DTMB, DVB-C2, DVB-T2 and channel simulation
  • 512 MB RAM minimum

Block Diagram

DTA-115 - Multi-Standard VHF/UHF Modulator for PCI Bus













Frequency range  47 .. 1000MHz ±1ppm
Bandwidth   5.0 .. 8.0MHz
MER (OFDM)   ~ 40dB

Main output: 
RF Connector  50-Ω BNC
Return loss  >15dB (47 .. 862MHz)
Level (QAM)   -31.5 .. 0dBm ±2dB
Level (OFDM)   -34.5 .. -3dBm ±2dB
Phase noise   <-90dBc @ 10kHz
Spectral purity    >50dB (47 .. 1000MHz)

Monitor output:
RF Connector  75-Ω F
Return loss  >15dB (47 .. 862MHz)
Level (QAM)   -27.5dBm ±3dB
Level (OFDM)   -30.5dBm ±3dB

ASI port:
Connector    75-Ω BNC
Return loss  >15dB (5 .. 270MHz)

PCI compliancy PCI rev 2.2, 32 bit, 33 or 66 MHz bus

DTA-Plus – optional VHF/UHF Booster/Attenuator for DTA-115

 DTA-Plus Features

  • Connect the DTA-Plus to your DTA-115 for boosting the output level range to -110dBm to +10dBm
  • Temperature compensation using an integrated temperature sensor, heater and fan control (fan included in the package)
  • Support in DTAPI for writing custom application that require controlling the RF level over a wide range
  • AGC for constant-level output signal
  • Support in StreamXpress for controlling the output level from the GUI and through remote control

Key Attributes
Input Range    -30…-10 dBm
Output Control Range     -110…+10 dBm
Output Control Step     0.1 dB
RF Output Connector    50-Ω SMA
RF Level Accuracy    ±1dB
Frequency Range   50…870 MHz
Temperature    25…60 °C
Power Supply Current @ 12V  Typ: 640 mA; Max: 1000mA

PC Requirements
Three PCI slots required for DTA-115, DTA-Plus and regulation fan


Ordering Info

All USA orders will be shipped from our USA warehouse. 

All other orders will be shipped from Canada.


DTA-115 – Multi-Standard VHF/UHF modulator, ASI port for PCI
Includes modulation options: ATSC VSB, DVB-C, DVB-T / DVB-H, QAM (Annex A/B/C)

DTA-115-SP – Multi-Standard VHF/UHF modulator, ASI port for PCI with StreamXpress player software.
Includes modulation options: ATSC VSB, DVB-C, DVB-T / DVB-H, QAM (Annex A/B/C)


DTC-305-CM   –   XpressSim channel-modelling option
DTC-370-ISDB – ISDB-T modulation option
DTC-371-IQ – IQ samples playout option
DTC-374-DTMB   – DTMB modulation option
DTC-375-CMMB – CMMB modulation option
DTC-378-T2 – DVB-T2 modulation option
DTC-379-C2 – DVB-C2 modulation option
DTC-376-DAB   –   DAB(+), T-DMB modulations option
DTC-377-MH  –  ATSC-M/H modullation option


DTA-115-GOLD – DTA-115 with all current and future modulation options, channel simulation,  StreamXpress   including  remote control, DtTV, DtGrabber+ and StreamXpert

DTA-Plus – VHF/UHF Booster/Attenuator for DTA-115

Related Products