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.

HDM 4220C  rear panel (with SDI inputs)

HDM 4230C  rear panel (with HDMI inputs)

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.