Front View
Rear View
HDMI® to DVB 4K Modulator H.264/H.265 HEVC with 4K HDMI® Loop Through
14MM-DTM4K
Product Summary
The DTM4K is a professional-grade 4K encoder modulator combining advanced H.264/H.265 HEVC encoding with a 4K HDMI® loop-through output. It preserves crystal-clear 4K quality on your main display while simultaneously modulating the signal to a 4K DVB output for seamless distribution across multiple TVs. Perfect for sharing content from CCTV NVRs, set-top boxes, or media players, the DTM4K supports flexible output formats including IP, DVB-T, DVB-C, ISDB-T, and ATSC. Designed for versatility and efficiency, it works over your existing coaxial or structured cabling—no extra wiring required—for a clean, reliable, and high-performance viewing experience.
View More Amplifiers and Modulators
Features and Benefits
- 4K Ultra HD Encoding delivers 4K video quality with advanced H.264/H.265 HEVC compression, ensuring crystal-clear visuals while optimising bandwidth efficiency.
- Simultaneous RF (DVB-T) and IP (UDP/RTP/RTSP) output allows you to distribute the same 4K content across multiple TVs and IP networks with ease.
- Connect directly to your existing coaxial or structured cabling, enabling quick setup without additional network infrastructure.
- Ensures consistent, high-performance transmission with MER ≥35 dB, ideal for both residential and commercial installations.
- Supports logo or QR code insertion for on-screen instant branding or easy access to online content, while the audio delay feature keeps sound perfectly aligned with the picture.
- Intuitive Web-GUI management provides easy configuration and monitoring of DVB-T modulation and IP streaming functions.
Specifications
| HDMI Encoding Section | |
|---|---|
| Video | |
| Encoding | HEVC/H.265, MPEG-4 AVC/H.264 |
| Interface | HDMI ×1, HDMI loop out ×1 |
| Resolution |
3840×2160_60/50p (H.265 only), 1920×1080_60/59.94/50p, 1280×720_60/59.94/50p |
| Chroma | Input: 4:4:4 / 4:2:2; Output: 4:2:0 |
| Bitrate | 2 Mbps ~ 20 Mbps |
| Rate Control | CBR / VBR |
| GOP Structure | IBBP, IPPP |
| IP output | |
| IP out over UDP (Unicast/multicast), RTP/RTSP, (RJ45, 100M /1000M self adaptive) | |
| DVB C Modulator Section | |
| Standard | J.83A (DVB-C), J.83B |
| MER | ≥40dB |
| RF Frequency | 50–960 MHz, 1 kHz step |
| RF Output Level | −20 ~ −5 dBm, 1 dB step |
| Symbol Rate | 5.000 ~ 7.000 Msps adjustable |
| Constellation |
J.83A: 16/32/64/128/256 QAM J.83B: 64/256 QAM |
| Bandwidth |
J.83A: 8 M J.83B: 6 M |
| Audio | |
| Encoding Format | MPEG-1 Layer 2, LC-AAC, HE AAC, HE AAC V2; AC3 Pass-through |
| Sample rate | 32KHz,44.1KHz,48KHz |
| Bit-rate |
48Kbps~384Kbps (MPEG 1 Layer 2 & LC-AAC) 24 Kbps~128 Kbps (HE AAC) 18 Kbps~56 Kbps (HE AAC V2) |
| DVB T Modulator Section | |
| Standard | DVB-T COFDM |
| Bandwidth | 6M, 7M, 8M |
| Constellation | QPSK, 16QAM, 64QAM |
| Code Rate | 1/2, 2/3, 3/4, 5/6, 7/8 |
| Guard Interval | 1/32, 1/16, 1/8, 1/4 |
| Transmission Mode | 2K, 4K, 8K |
| MER | ≥35dB |
| RF Frequency | 50–960 MHz, 1 kHz step |
| RF Output Level | −20 ~ −5 dBm, 1 dB step |