Overview
DMB-9581E Encoder/Modulator integrates MPEG-4/AVC H.264 encoding, multiplexing, and modulation within a 1U rack-mountable chassis. The unit accepts 8/12/16/20/24 HDMI inputs, along with IP streams and 2 ASI inputs, and converts them into RF signals compliant with DVB-C, DVB-T, ISDB-T, or ATSC standards, operating across 50–960 MHz. Additionally, it provides 2 ASI ports and 1 IP port for Transport Stream output.
Features:
All-in-One Integrated Platform – This unit combines encoding, modulation, and multiplexing in a single device. In addition to HDMI input, it supports 128× MPTS/SPTS streams via UDP/IP and 2× ASI inputs. RF output can be generated from HDMI, IP, or ASI sources. The device also provides IP outputs including 127× SPTS over IP (UDP/RTP), 1–8× MPTS, and 2× independent ASI outputs. RF output is configurable as 4/8/16× RF carriers for DVB‑T/ATSC‑T/ISDB‑T/Tb/DTMB, or 16/32× RF carriers for DVB‑C. (Note: ISDB‑T RF output is limited to 1× ASI input and only supports 2K mode; 4K and 8K are not supported.)
Multi‑Source Compatibility – The system accommodates mixed input configurations such as HDMI + Tuner (DVB‑S2/C/T2/ISDB‑T/ATSC), for example 16× HDMI inputs combined with 8× frequency‑programmable tuners.
Flexible Frequency Allocation – Offers 768 MHz of usable bandwidth, enabling flexible assignment of frequency points within this spectrum (when configured for 16× RF outputs).
Multi‑Carrier Configuration Options – Available in versions that support 4/8/16 carriers for DVB‑T/C/ATSC/ISDB‑T, or 32× QAM carriers for DVB‑C, selected based on the number of program channels required.
Application
Various of DTV/CATV Broadcasting Systems
Distribute IP source,HDMI programs source to All TVs over existing TV coax
Upgrade all your analog Head-ends to digital TV Solution
Enterprise, hotel, campus, hospital, restaurant, public place etc
Works with Digital TV transmitter in wireless TV broadcasting
Low cost Digital TV distribution
FAQ
What is your MOQ?
Because our company produces a variety of products, the minimum order quantity varies accordingly. Different products are affected by raw material reserves, product value, production cycle, order progress, and inventory. The minimum order quantity of some products is 1 piece, while the minimum order quantity of some products may exceed 1,000 pieces. Please ask our salesman in detail to get the latest and most accurate information.
What is the name of your factory and where is it located?
Our factory name is Hangzhou Dtvane Tech Co., Ltd. located at Binkang Road, Binjiang District, Hangzhou, China
What is a headend?
A headend is used to receive TV channels from external sources and convert them to a unified format for distribution to the in-room TVs. A traditional headend consists of terrestrial and/or satellite antennas and an appliance that converts the TV signals.
Broadcast headend or IPTV headend?
A broadcast headend is used for distribution in a coaxial antenna network inside the building. An IPTV headend is used for streaming multicast IPTV channels over a local area network (LAN) instead of the coax network. So, if you already have a coax network and don't want to upgrade to IPTV and LAN you need a broadcast headend, otherwise an IPTV version. Some hotel TV systems use both to distribute different kinds of channels, but the cost-efficient version is to go with one or the other.
Where do the TV channels come from?
The headend typically receives TV channels from satellite dishes, terrestrial antennas and/or cable from cable TV operators. It's also possible to receive TV channels from the internet and other network equipment like IPTV cameras or computers.
CONTACT US
Lourisa
Sales Engineer
Hangzhou DIGICAST Technology Co.,Ltd
Tel :+86 0571-85020366 ▏ Fax :+86 0571-85020368
Mob/Wechat/WhatsApp:+86 18457178579
E-mail: sales005@digicast.cn
Website:https://digicast.cn/
Add: 9/F,No.1 Building Yitian Plaza,No.292 Eastcom Avenue,Hangzhou,310053,China
Hot Tags: best digital hdmi rf modulator, China best digital hdmi rf modulator manufacturers, suppliers, factory, TV Modulator HDMI, hdmi to rf modulator, HDMI Modulator, Modulator HDMI, HDMI To RF Converter
Technical Specifications
Video Specifications
Video compression: MPEG-4 AVC/H.264
Video inputs: Version 1: 4/8/12/16/20/24*HDMI for option
Version 2: HDMI+Tuner Mixed input
The 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
The Output Resolution(Max 1080P@60 FPS):
1920×1080@60P,1920×1080@50P,1920×1080@30P,1920×1080@25P, 1280×720@30P,1280×720@25P, 720×576@25P, 720×480@30P
Bit-rate: 1 ~ 13Mbps, CBR/VBR
GOP Structure: IPPPP (P Frame for adjustment, without B Frame)
Audio Specifications
Encoding: MPEG-1 Layer 2
Sampling rate: 48KHz
Resolution: 24-bit
Bit-rate : 64kbps, 128Kbps, 192kbps, 224kbps, 256kbps, 320kbps, 384kbps
Audio Gain: 0-255
Inputs and Outputs
ASI Input/output
Channel: 2*ASI(Independent) input and 2*ASI output
Interface: BNC, 75 ohm
Signal level 200-800mVp-p
Packet length: 188 bytes
Maximum bit-rate: per port ≤100Mbps
Packet mode: Byte mode
IP Input and Output
RJ45 Port, 100/1000M GigE Port
Simultaneous output with 127*SPTS + 1*MPTS (4*RF Output)/ 8*MPTS (8*RF / 16*RF DVB-C Output)
TS over RTP, UDP unicast and multicast streaming
Configurable packet size(2-7)x188Bytes
Filter Null Packet
Total Bitrate: 1-200Mbps (Should be More than Encoding bitrate)
Modulation (4/8/16*RF DVB-T/ATSC/ISDB-T or 16/32 DVB-C out for option)
Connector: 1 Port, F-Type, 75Ω
Output Return Loss: 14 dB
MER ≥40dB
RF output level: -20 ~ 0dbm, 0.1db step
Numbers of RF Channel: 4/8/16
Modulation Mode: DVB-C, DVB-T, ATSC, ISDB-T, DTMB option
DVB-T Modulation
Channel: DVB-T adjacent frequencies
Modulation standard: EN300744
Frequency range:50-960Mhz,1Khz one step
Modulation standard: EN300744
Bandwidth: 6M, 7M, 8M
FFT mode: 2K, 8K
Constellation:QPSK,16QAM,64QAM
Guard Interval 1/4, 1/8, 1/16, 1/32
FEC 1/2, 2/3, 3/4, 5/6, 7/8
TS bit rate < 31 Mbit/s
ATSC-T Modulation
Channel: 8VSB adjacent frequencies
Constellation: 8VSB
Frequency range:50-960Mhz,1Khz one step
Constellation: 8VSB
TS bit rate <19 Mbit/s
MER≧40 dB
DVB-C Modulation(16 or 32 DVB-C out option)
16* DVB-C Output Modulation
Channel: 16*DVB-C adjacent frequency RF out
Frequency range:50~960MHz,1Khz one step
Bandwidth range 192 Mhz between start frequency and end frequency,set 16 frequency within 192 Mhz bandwidth range
MER≥40 dB
symbol rate:5~7Mbaud
total output level adjustment -35~-5dBm by 0.1 dB step
DVB-C Standard J83.A (DVB-C, J83.B, J83.C)
Constellation (QAM):16,32,64,128, 256
|
Carrier |
Annex A |
Annex B |
Annex C |
|
|
Constellation (QAM) |
16,32,64,128, 256 |
64 |
256 |
64/256 |
|
Bandwidth (Mhz) |
8 |
6 |
6 |
6 |
|
Symbol Rate ( Mbaud) |
5-7 |
5.057 |
5.361 |
4.2-5.3 |
32* DVB-C Output Modulation
Channel:32*DVB-C non-adjacent frequency RF out
Frequency range:96~864MHz,1Khz one step
bandwidth range 768 Mhz,frequency points can be used flexible within bandwidth range
MER≥40 dB
symbol rate:5~7Mbaud
total output level adjustment -35~-5dBm by 0.1 dB step
DVB-C Standard J83.A (DVB-C, J83.B, J83.C)
|
Carrier |
Annex A |
Annex B |
Annex C |
|
|
Constellation (QAM) |
16,32,64,128, 256 |
64 |
256 |
64/256 |
|
Bandwidth (Mhz) |
8 |
6 |
6 |
6 |
|
Symbol Rate ( Mbaud) |
5-7 |
5.057 |
5.361 |
4.2-5.3 |
ISDB-T Modulation
Channel: ISDB-T frequency
when ISDB-T RF output only 1*ASI input,
Frequency range: 50-960Mhz,1Khz one step
ISDB-T Standard ARIB STD-B31
Constellation: DQPSK, QPSK, 16QAM, 64QAM
Guard Interval:1/32, 1/16, 1/8, 1/4
Transmission Mode:2K,4K,8K(when 4*ISDB-T out, Mode only support 2*K, when 8/16*ISDB-T out,support 2K,4K,8K option)
Code rate:1/2, 3/4, 5/6, 7/8
Bandwidth:6MHz
TS bit rate＜21 Mbit/s
MER≥40 dB
DTMB Standard GB20600-2006
Constellation: 4QAM, 16QAM, 32QAM, 64QAM
Code rate: 0.4, 0.6, 0.8
Guard Interval: 420, 595, 945 IONS
System Management
Connector: 1*RJ-45, 10/100 Base-T interface.
Front panel and web browser via Ethernet interface
Physical and Power
Voltage: 100 to 120/200 to 240V AC ±10%; 50/60Hz
Consumption: 60W
Operating temperature: 0 ~ 45℃
Storage temperature: -20 ~ 80℃
Relative humidity: 10%~90%(non-condensing)
Dimensions: 482mm(W) × 380(D)mm × 45mm(H)(19inch, 1RU)
Weight: 9.6 KGS
