Product Introduction
Highlights
Title: HDMI QAM Modulator
Model: DMB-9581E
Flexible Mixed‑Input Configuration – Designed for diverse application scenarios, supporting:
Option 1: Multiple tuner standards (DVB‑S2/T2/C, ISDB‑T, ATSC, DTMB)
Option 2: Tuner + HDMI input
Option 3: Tuner + HDMI + CVBS input
IP and ASI inputs are provided as standard.
Multi‑Standard Tuner Support – Allows mixed input of different tuner standards, e.g., DVB‑S2 + DVB‑T2 + HDMI.
High‑Efficiency Video Encoding – Offers H.265 HEVC or H.264 encoding options for superior compression performance.
Multi‑Carrier Output Options – Configurable as 4/8/16 QAM or 32 QAM DVB‑C outputs, selected according to the number of program channels required.
Overview
DIGICAST Encoder Modulator Series converts digital audio‑video signals from HDMI, IP, or ASI sources into modulated MPEG‑4/H.264 Full HD streams compliant with DVB‑T/C, ATSC, ISDB‑T, or DTMB broadcast standards. The input signal can be sourced from external SD/HD devices such as satellite receivers, DVRs/NVRs, DVD players, CCTV systems, and more.
The channels generated from HDMI inputs can be seamlessly blended with terrestrial digital TV (DTT) signals and distributed over a single coaxial cable network. This allows the combined content to be displayed on all receiving devices within the system. The series provides an ideal solution for integrating additional local or internet‑based programs into existing coaxial infrastructures, making it widely suitable for hotels, hospitals, shopping malls, CATV operators, and similar deployment scenarios.
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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.
