Tv Modulator Transmitter

DMB-9581E Encoder/Modulator​ is a 1U rack‑mount integrated unit that combines H.264 video encoding, multiplexing, and RF modulation in a single chassis. It accepts configurable HDMI inputs (8, 12, 16, 20, or 24 channels), along with IP streams and 2 ASI inputs, and converts them into RF outputs compliant with DVB‑C, DVB‑T, ISDB‑T, or ATSC standards, operating across the 50–960 MHz frequency range. The device also provides 2 ASI ports and 1 IP port for outputting Transport Streams.

All-in-One Integrated Encoder, Modulator & Multiplexer​ – In addition to HDMI inputs, the unit supports 128× MPTS/SPTS streams via UDP/IP and 2× ASI inputs. RF output can be generated from any source: HDMI, IP, or ASI. 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 supports 2K mode only; 4K and 8K are not supported.)

Broad Signal Source Compatibility​ – Supports hybrid input configurations such as HDMI + Tuner (DVB‑S2/C/T2/ISDB‑T/ATSC), for example 16× HDMI + 8× programmable-frequency tuners.

Flexible Frequency Allocation​ – Offers 768 MHz of usable bandwidth, allowing dynamic assignment of frequency points within this range (when configured for 16× RF outputs).

Multi‑Carrier Configuration Options​ – Available in versions supporting 4/8/16 carriers for DVB‑T/C/ATSC/ISDB‑T, or 32× QAM carriers for DVB‑C, selected according to the required number of program channels.

Versatile Digital TV and CATV Broadcasting Platforms​ – Deliver IP‑based and HDMI program sources to all televisions via existing coaxial cable infrastructure. Seamlessly upgrade your analog head‑end systems to a comprehensive digital television solution. Suitable for a wide range of environments, including corporate offices, hotels, educational campuses, healthcare facilities, restaurants, and other public venues. Compatible with digital TV transmitters for wireless broadcasting applications. A cost‑effective solution for distributing digital television signals.

FAQ

DMB-9581E Encoder/Modulator​ is an integrated encoding, multiplexing, and modulation unit housed in a standard 1U rack‑mount chassis. It supports 8/12/16/20/24 HDMI inputs, along with IP streams and 2 ASI inputs, converting them into RF outputs compliant with DVB‑C, DVB‑T, ISDB‑T, or ATSC standards, with a frequency range of 50‑960 MHz. The device is also equipped with 2 ASI ports and 1 IP port for Transport Stream (TS) output.

Key Features​

All‑in‑One Integration:​ Combines H.264 encoding, program‑stream multiplexing, and RF modulation in a single enclosure.

Multi‑Source Input:​ Accepts mixed signals from HDMI, IP (network streams), and ASI sources.

Multi‑Standard RF Output:​ Configurable for DVB‑C (cable), DVB‑T (terrestrial), ISDB‑T, or ATSC broadcasting standards.

Baseband TS Output:​ Provides both ASI and IP ports for TS output, enabling signal recording, monitoring, or redistribution.

Typical Applications​

TV headend systems for hotels, hospitals, campuses, shopping malls, etc.

Cable TV (CATV) or digital terrestrial TV (DTT) headends.

Encoding and modulation platforms for broadcasters and operators.

Insertion of local content (e.g., promotional videos, surveillance feeds) into existing cable TV networks.

Technical Advantages​

High‑density integration saves rack space.

High‑capacity input support (up to 24 HDMI channels).

Wide RF output range (50‑960 MHz), adaptable to different national frequency plans.

IP/ASI baseband outputs for easy interfacing with IP networks or legacy ASI systems.

This device serves as a key integrated solution in digital TV headend systems for signal acquisition, encoding, multiplexing, and modulation.

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