Product Introduction
Highlights
Title: HDMI QAM Modulator
Model: DMB-9581E
Versatile Mixed Signal Input – Designed for flexible, scenario‑specific customization. Input options include:
Option 1: Support for multiple tuner standards (DVB‑S2/T2/C, ISDB‑T, ATSC, DTMB)
Option 2: Combination of tuner and HDMI inputs
Option 3: Tuner + HDMI + CVBS (composite video) inputs
IP and ASI inputs are provided as standard.
Multi‑Standard Tuner Support – Enables hybrid input of different broadcast standards, e.g., DVB‑S2 + DVB‑T2 + HDMI.
High‑Efficiency Video Encoding – Offers selectable H.265 HEVC or H.264 encoding for optimal compression performance.
Multi‑Carrier Output Options – Configurable as 4/8/16 QAM or 32 QAM DVB‑C outputs, chosen according to the required number of program channels.
Overview
DIGICAST Encoder mdolator series that transforms a digital video and audio (HDMI) signal/IP/ASI into a modulated FullHD (MPEG-4/H.264) signal into a DVB-T/C/ATSC/ISDB/DTMB channel. The input digital signal comes from an external SD/HD source: satellite receiver, DVR/NVR, DVD, CCTV, etc.
The channel generated by the HDMI source can be mixed with the DTT signal and then distributed over a single coaxial cable. Its content can thus be displayed on all the receiving devices of the system.it is the idea solution for inserting more programs from loca/internet to existing coaxial sytem, widely used in hotel/hospital/shopping mall …or CATV operators system.
FAQ
Company Information
Company Type
DIGICAST is a technology‑focused enterprise specializing in the research, development, production, sales, and engineering support of digital television headend and broadcasting equipment, with over a decade of experience in the industry in China.
Product Portfolio
Our core offerings include digital TV broadcasting headend systems and equipment, covering:
Headend signal acquisition solutions
Integrated receiver‑decoders for DVB‑S/S2, ATSC, DVB‑T, ISDB‑T, and DVB‑C standards
HD/SD video encoders with multiplexing, ASI input/output, and multi‑channel tuner input
RF transmodulators
Multi‑channel HDMI‑to‑RF encoder‑modulators
Modulators supporting IP/ASI input with selectable RF output (DVB‑C, DVB‑T, ISDB‑T, ATSC)
IPTV/OTT solutions for hotels, hospitals, campuses, and community applications
Warranty & Support
DIGICAST provides a standard five‑year warranty for quality‑related issues, along with lifetime technical assistance.
Why Partner with Us?
We are expanding our presence in both domestic and international markets while actively contributing to the advancement of TV broadcasting technology. Recognized as a leading domestic provider of professional video operating systems and technical services, we deliver reliable, high‑performance solutions.
Requesting a Quotation
We are happy to provide product‑specific pricing upon request. Please contact us via email at info@digicast.cn or by phone, and we will respond promptly with a detailed quote.
Technical Support
For technical assistance, you can reach us by email or WhatsApp. Our support team strives to provide timely responses to all inquiries.
Shipping Methods
Samples and orders are typically shipped via international express carriers such as DHL, FedEx, or UPS. Customer‑specified shipping arrangements can also be accommodated.
Order Processing Timeline
Orders are generally dispatched within 3‑5 business days after payment confirmation. For customized configurations or bulk orders, delivery schedules will be confirmed with your sales representative.
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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.
