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Digital Modulator THDM345 COFDM HDMI TDT with I/O Triax

This modulator generates a DVB-T (COFDM) signal from the available HDMI input. It has an HDMI input and a HDMI output step, in addition to the RF output for the DVB-T signal generated.

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€625.09 €992.20 Save 37%
Tax included
Reference triax-608410
Brand Triax
Available in 4/5 days

Free shipping

Digital Modulator THDM345 COFDM HDMI TDT with I/O Triax

€625.09 €992.20 Save 37%

The THDM 345 domestic modulator generates a signal in DVB-T (COFDM) format from the HDMI input. It supports MPEG-4 / H264 encoding, integrates a DVB-T RF output modulator to convert HDMI input signal. It has, in addition to the HDMI input, an HDMI output (Passthrough) and a DVB-T (RF) output. Also, the THDM modulator 345 adjusts the compression speed for the available bandwidth, using the DVB-T modulation parameters.


  • DVB-T
  • 1 Output channel
  • Hierarchical transmission
  • FEC (code rate) configurable 1/2, 2/3, 3/4, 5/6, 7/8
  • QPSK modulation, 16QAM, 64QAM
  • 2k and 8k transmission mode
  • Guard interval 1/4, 1/8, 1/16, 1/32
  • Channel bandwidth: 6, 7, 8 Mhz
  • Mer> 35 dB


Input HDMI
N. Channels 1
Video HDMI
Video system 480i/p, 576i/p, 720p, 1080i, 1080p
Audio system HDMI
Compression HDMI
Video H.264 High profile level
Video resolution 720p
Video bit rate 12 Mbps max
Audio MPEG 1 Audio layer II (MP2) / ACC
Audio Bit rate 192 – 384 Kbit/s
DVB insertion tables SDT, NIT
Editable fields Service name, Transport stream _id / Original Network_id, LCN, NIT Private Dat specifier
RF output  
Type 1 Multiplex DVB-T with a digital TV service
Frequency 177 – 856 MHz
MER > 35 dB
Max level of departure 100 dBµV
RF adjustment level +5 dB ~ 10 dB in steps of 1 dB
HDMI input HDMI connector
HDMI output HDMI coinector (pass through)
RF output Female type F connector
Standard DVB-T (ETSI EN 300744)
Constellation QPSK, 16QAM, 64QAM
Guard interval 1/4, 1/8, 1/16, 1/32
FEC (Code Rate) 1/2, 2/3, 3/4, 5/6, 7/8
Modulation mode 2k, 8k
Bandwidth 6 MHz, 7 MHz, 8 MHz
Power supply 5Vdc adapter; 2A
Display LCD @ 2x16 characters
Work atmospheric conditions  
Temperature 5ºC - 40ºC
Relative humidity 80% @ 30ºC



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