4-Input Encoder, Multiplexer & Modulator

BLANKOM HDM-4220C and HDM-4230C

blankom dvb iptv headend

Ordering Guide:

4 Versions available:

BLANKOM HDM-4220C

  • 4 HD-SDI inputs
  • 4 DVB-C outputs

BLANKOM HDM-4230C

  • 4 HDMI inputs
  • 4 DVB-C outputs

BLANKOM HDM-4220T

  • 4 HD-SDI inputs
  • 4 DVB-T outputs

BLANKOM HDM-4230T

  • 4 HDMI inputs
  • 4 DVB-T outputs

Available option:

  • Dolby Digital AC3 2.0 audio encoding
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Encoder & Modulator with Multiplexer

4x HD-SDI or HDMI Inputs, 4x DVB-C, ASI, IP Outputs

⟩⟩⟩ Broadcast quality, professional 4-way SD and HD audio & video encoding, multiplexing and modulating device with very stable and powerful functionality. Extremely low latency (delay). H.264 and MPEG-2 encoder with 4 HD-SDI or HDMI inputs, multiplexer and modulator combined. It has an ASI input and can also multiplex the input TS with the 4 encoded SPTS content to generate a MPTS output.

  • 4-way MPEG2/MPEG4 Encoder, Multiplexer, Modulator
  • Easy encoding, multiplexing and RF modulating meeting highest quality standards
  • Encoding/Multiplexing/Modulating of 4 SDI or HDMI inputs to 4 DVB-C (DVB-T), 2 ASI and IP outputs
  • Individual adjustment of the input audio/video signals
  • Supports insertion of external ASI and DVB-C also for cascading
  • Local and remote configuration with PC/Notebook via webserver/SNMP
  • 4 HD-SDI/SD-SDI or HDMI video inputs
  • 4 SPTS and 1 MPTS outputs
  • 4 DVB-C modulator outputs (DVB-T Optional)
  • 1 ASI input for mixing
  • 1 DVB-C input for mixing
  • 1 parallel ASI output as copy of the MPTS
  • Broadcast quality
  • Extremely Low latency encoding
  • Large video buffer for HD-SDI input
  • MPEG4 AVC/H.264 and MPEG-2 video encoding formats
  • MPEG1 Layer II, MPEG-2-AAC and MPEG-4-AAC, Dolby Digital AC3 2.0 (Optional) audio encoding formats
  • Up to 1080p@50/60 fps resolution (MPEG4 AVC/H.264)
  • Up to 1080i@50/60 fps resolution (MPEG2 HD)
  • More than 10 Mbps bitrate for each channel
  • LCN (Logical Channel Number) support
  • Excellent modulation quality MER ≥ 42dB
  • RF Frequency range 30 MHz … 960 MHz
  • LCD display, Remote control and firmware
  • Management via WEB-IF or Front Panel, easy updating by web-interface

BLANKOM HDM-4220/HDM-4230 encoder-modulator accepts 4 channels digital HD and SD video over SDI or HDMI interface.

Video encoding format is H.264 or MPEG-2. It has internal multiplexer being able to multiplex external ASI and DVB-C signals with the self encoded content.

The output is 4 modulated DVB-C/T channels, ASI and IP simultaneously in broadcast quality.

Features

BLANKOM HDM-4220/HDM-4230 series HD Encoder & Modulator is our professional SD and HD audio & video encoding, multiplexing and modulating device with powerful functionality.

It has 4 independent channels of HD-SDI or HDMI input interfaces.

It supports H.264 and MPEG2 video encoding varios audio encoding formats. It has very low encoding latency (delay).

Moreover, it has an ASI input, a DVB-C input and can multiplex the input transport streams with the 4 encoded channels, generating 4 DVB-C channels (DVB-T, ATSC, ISDB-T optional) as well as a MPTS, 4 SPTS and 2 ASI outputs.

Application

The signals sources can be satellite receivers, closed-circuit television cameras, Blu-ray players etc.

The modulated RF output can be distributed over any coaxial RF network and can be received by television sets directly.

The devices can be used as headend on any DVB-C/T distribution network in hotels, hospitals, corporate buildings, shopping centers, campuses, residential compounds, cruise ships, trains etc.

BLANKOM HDM 4220C
BLANKOM HDM 4220C rear

HDM 4220C  rear panel (with SDI inputs)

BLANKOM HDM 4230C rear

HDM 4230C  rear panel (with HDMI inputs)

BLANKOM HDM 8220C

Technical Specifications

Encoder

Video

  • Encoding: MPEG2, MPEG4 AVC/H.264
  • Inputs: 4x HD/SD-SDI (Model HDM-4220)  or 4x HDMI (Model HDM-4230)
  • Resolution:
    • 1920*1080_60p, 1920*1080_50p, (for MPEG4 AVC/H.264 only),
    • 1920*1080_60i, 1920*1080_50i,
    • 1280*720_60p, 1280*720_50p,
    • 720*480_60i, 720*576_50i
  • Low delay selections: Normal, Mode 1, Mode 2

Audio

  • Encoding: MPEG1 Layer II, MPEG2-AAC, MPEG4-AAC, Dolby Digital AC3 2.0 (Optional)
  • Sampling rate: 48 kHz
  • Bit rate: 64 kbps, 96 kbps, 128 kbps, 192 kbps, 256 kbps, 320 kbps

Modulator

DVB-C (QAM)

  • Standards: J.83A (DVB-C) / J.83B / J.83C
  • MER: ≥42dB
  • RF frequency: 4 carriers combined output, 30~960 MHz, 1 kHz step
  • RF output level: -30 … -10 dBm (77 … 97 dBµV), 0.1 dB step
  • Symbol rate: 5.000 … 9.000 Msps adjustable
  • Constellation: 16/32/64/128/256QAM
  • Bandwidth: 6/8 MHz

DVB-T

  • Standard: EN300744
  • Bandwidth: 6, 7, 8 MHz
  • Constellation: QPSK, 16QAM, 64QAM
  • Code rate: 1/2, 2/3, 3/4, 5/6, 7/8
  • Guard Interval: 1/32, 1/16, 1/8, 1/4
  • Transmission Mode: 2K, 8K
  • MER: ≥42dB
  • RF frequency: 30 … 960 MHz, 1 kHz step
  • RF Out: COFDM DVB-T out
  • RF output level: -30 … -10 dBm (77 …97 dBµV), 0.1 dB step

System

  • Control LCD/keyboard
  • Network management (SNMP and WEB Browser)
  • ASI output interface : BNC type
  • 4x SPTS or 1x MPTS interface: RJ45, 100M
  • Control port (NMS interface): RJ45, 100M
  • English menu
  • Software upgrade over ethernet

General

  • Dimensions 420mm × 400mm × 44mm, 19” 1RU, 4.5 kg
  • Power AC 110V ±10%, 50/60 Hz or AC 220V ±10%, 50/60 Hz
  • Temperature 0 … 45℃ (operation), -20 … 80℃ (storage)

Latency test data

for various encoding formats with HDM-4220C

Decoding Terminal

Encoding Details

Average Latency
(ms)

Resolution

Encoding
Bit Rate

Low Latency Mode

Signal Source

Encoding Type

DVB-C HD STB

1080i@50

14 Mbps

MODE 1

HDMI

mpeg2

170

H.264

347.5

SDI

mpeg2

227.5

H.264

367.5

MODE 2

HDMI

mpeg2

222.5

H.264

395

SDI

mpeg2

240

H.264

397.5

DVB-C HD STB

720p@50

14 Mbps

MODE 1

HDMI

mpeg2

85.75

H.264

237.5

SDI

mpeg2

127.5

H.264

295

MODE 2

HDMI

mpeg2

182.5

H.264

277.5

SDI

mpeg2

167.5

H.264

325

DVB-C HD STB

576i@50

14 Mbps

MODE 1

HDMI

mpeg2

310

H.264

600

SDI

mpeg2

330

H.264

620

MODE 2

HDMI

mpeg2

270

H.264

610

SDI

mpeg2

280

H.264

620

Specifications are subject to change without notice.