Product Introduction: HDMI QAM Modulator
Model: DMB-9581E
Key Advantages
Ultra-Flexible Input Options: Customizable hybrid input configurations, including multi-standard tuners (DVB-S/S2, DVB-T/T2, DVB-C, ISDB-T, ATSC, DTMB), HDMI, CVBS, with standard IP and ASI inputs for all models. Supports mixed input of different broadcast standards in one device.
High-Efficiency Encoding: Optional H.265 HEVC and H.264 encoding, delivering crisp Full HD video while minimizing bandwidth usage.
Scalable QAM Output: 4/8/16 QAM and 32 QAM DVB-C output options, perfectly matched to your required number of program channels.
Product Overview
The DMB-9581E from DIGICAST's professional encoder modulator series is an all-in-one solution for digital TV distribution. It converts HDMI, IP and ASI audio/video signals into modulated Full HD signals compliant with DVB-T/C, ATSC, ISDB-T and DTMB standards, working seamlessly with all common SD/HD source devices (satellite receivers, DVR/NVR, DVD players, CCTV, etc.).
It allows you to mix HDMI-sourced local channels with existing terrestrial DTT signals, distributing the combined content over a single coaxial cable to all end displays. Perfect for integrating custom program content into existing coaxial TV systems, it is widely used in hotels, hospitals, shopping malls and CATV operator networks.




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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
Inputs and Outputs
ASI Input/out
Channel: 2*ASI(Independent) input/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/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)
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 |
FAQ
How long is your warranty?
Normally Digicast provide five years after sale service with its quality issue and lifetime technical support.
Why do I choose you as our products supplier?
DIGICAST is building up both domestic and overseas markets while making a good contribution to the TV broadcasting industry,which is the domestic first-class of professional video operating system products and technical service providers
Can we get a quote on an item?
Sure, we understand that you may require a quote on each item sometimes. Please email us or call us at info@digicast.cn and we will respond to you with a quote.
How can I get technical support help?
Send us e-mail or use whatsapp to contact the sale service. Our technical support staff will try to answer in a timely manner
What kind of shipping way for the sample and the shipment?
Normally we will ship by air express, such as DHL, FedEx,UPS or depends on the customers' needs.
When will my order be shipped?
Usually, we will arrange the delivery within 3-5 working days after receiving payment, if there are some customized requirements or the batch orders, Please confirm with sales representative
What are my payment choices?
we can accept payment by bank transfer, T/T, Paypal (5% extra fee), western union, Alibaba assurance order optional
Can you do OEM for us?
Yes. If there is a certain order quantity, we can do OEM including printing, logo, and customized model for you.



















