DVB-C Modulator with 8/12 HDMI Inputs


DVB-C Modulator with multiple HDMI Inputs & one DVB-C Tuner, with Multiplexer, with IP Input and Output. On-Screen Graphics and Scrolling Text Inserter.

5. Generation BLANKOM® Hybrid DVB & IPTV Headend Technology. HDMI input, DVB-C and IPTV output. Logo, Banner and Text inserter.
Multiple HDMI outputs can be modulated and multiplexed into 4 DVB-C packages and at the same time into 4 MPTS IPTV streams. There is also a DVB-C tuner built in, from which also services can be selected out and included into the multiplexed packages/streams. Graphics and scrolling text can be added onto each service simultaneously. The device can be operated from anywhere on LAN, WAN or Internet.

  • HDM-8500C series includes 2 different versions:
    8 HDMI + 128 IP (UDP/RTP) + 1 DVB C input / 4 DVB-C + 4 MPTS IPTV output (HDM 8508C)
    12 HDMI + 128 IP (UDP/RTP) + 1 DVB C input / 4 DVB-C + 4 MPTS IPTV output (HDM 8512C)
  • 4 internal Multiplexer
  • On-Screen Graphics, Scrolling Text, QR Code
  • Excellent RF output performance index, MER ≥ 40dB
  • Accurate PCR adjusting
  • PID filtering and re-mapping
  • PSI/SI rebuilding and editing
  • “Null PKT Filter” function
  • Remote control and firmware, web NMS management
  • Updates via web
  • Professional quality, breakthrough price.

HDM-8500C series 8~12 HDMI, IPTV, DVB-C input DVB-C Modulator and IPTV Encoder with extensive Graphics and Text Insertion features.


BLANKOM HDM 8500C series  MPEG4 AVC/H.264 HD DVB-C Modulator and IP Encoder is a professional HD audio & video encoding and multiplexing device.

It has 8 ~ 12 HDMI video input interfaces, supporting MPEG-4 video encoding and MPEG 1 Layer 2 audio encoding.

It has also IPTV input for UDP/RTP SPTS content as well as one DVB-C tuner input

This device can simultaneously encode 8 ~ 12 HDMI channel HD audio & video; the 4 internal multiplexer can multiplex the conten from HDMI inputs, DVB-C tuner and up to 128 IPTV signals into 4 different DVB-C packages. All those packages can have mirror contents as MPTS IPTV streams.

On-Screen Graphics, Scrolling Text and QR Code can be added to all of the output channels simultaneously.

In conclusion, its high integrated and cost effective design makes the device widely used in varieties of digital distribution systems such as cable TV digital head-end, satellite digital TV broadcasting etc.


DVB-C Modulator and IPTV encoder for multiple HDMI and IPTV channels with DVB-C and IPTV output.

Logo and advertisement banner inserter.

Scrolling text message inserter.

Multiplexer with multiple HDMI inputs, DVB-C RF and MPTS IP output.

Blankom HDM-8500

Technical Specifications


DVB-C Modulator and MPTS IPTV Encoder with HDMI input, Logo and Scrolling Text insertion feature


  • 8, 12 HDMI signals
  • 128 IPTV (UDP/RTP) channels
  • 1 DVB-C tuner


  • 4 DVB-C packages
  • 4 MPTS IPTV streams


  • Input Resolution: 1920×1080_60P, 1920×1080_60i, 1920×1080_50P, 1920×1080_50i, 1280×720_60P, 1280×720_50P, 720×576_50i, 720×480_60i
  • Output Resolution: 1920×1080_30P, 1920×1080_25P, 1280×720_30P, 1280×720_25P, 720×576_25P, 720×480_30P
  • Encoding: MPEG-4 AVC/H.264
  • Bit-rate: 1Mbps~13Mbps each channel
  • Rate Control: CBR/VBR
  • GOP Structure: IP…P (P Frame adjustment, without B Frame )


  • Encoding: MPEG-1 Layer 2
  • Sampling rate: 48KHz
  • Resolution: 24-bit
  • Bit-rate: 64kbps,128kbps,192kbps, 224kbps, 256kbps, 320kbps, 384kbps

On-screen insertion:

  • 1 PNG Graphics
  • 1 Scrolling Text
  • 1 QR Code


  • 4 Multiplexer
  • PID remapping (automatically or manually),  Accurate PCR adjusting,  Generate PSI/SI table automatically
  • Maximum PID Remapping: 180 input per channel


  • DVB-C (J.83A and J.83B)
  • QAM Channel: 4
  • Standard: EN300 429/ITU-T J.83A/B
  • MER: ≥40db
  • RF frequency: 50~960MHz, 1kHz step
  • RF output level: -26~-1dBm (81~106 dbµV), 0.1dBm
  • Symbol Rate: 5.0Msps~7.0Msps, 1ksps steps
  • Constellation: 16/32/64/128/256 QAM (J.83A ), 64/256 QAM (J.83B)
  • Bandwidth: 8 MHz (J.83A), 6 MHz (J.83B)

RF Output

  • F type interface

Stream Output

  • 4 MPTS output over UDP/RTP,
  • 1*1000 Base-T Ethernet interface (Data1 only)


  • Control: Remote management Web NMS(10M/100M)
  • English language menu
  • Ethernet software upgrade


  • Dimensions: 482mm×410mm×44mm, 19” 1U,
  • Approx weight 8kg
  • Power: AC 110V±10%,50/60Hz or AC 220V±10%, 50/60Hz
  • Power consumption 70W
  • Temperature: 0~45℃ (operation), -20~80℃ (storage)