Encoder-Modulators
HDM-4230
4-Channel HDMI Encoder-Modulator for DVB-C/T Head-End Systems
The VIZOBOX HDM-4230 turns up to four HDMI sources into adjacent DVB-C or DVB-T RF channels in a single unit — encoding, multiplexing and modulation without additional equipment.
Overview
The HDM-4230 is an all-in-one encoder-modulator that accepts four HDMI (or SDI) inputs up to 1080p60 and encodes them in MPEG-2 or MPEG-4 AVC/H.264. The integrated modulator delivers four combined RF carriers as DVB-C (J.83 A/B/C) or DVB-T (EN300744) across 30–960 MHz, with MER of ≥42 dB. Streams are additionally available as ASI and IP output (4x SPTS or 1 MPTS), while configuration and monitoring are handled via the local LCD panel or the web-based NMS.
Highlights
- Integrated encoding, multiplexing and modulation in a single unit
- Four HDMI (or SDI) inputs up to 1080p60, MPEG-2 and H.264 encoding
- Adjacent DVB-C/DVB-T RF output channels with MER of ≥42 dB
- Multi-channel bouquet output with PSI/SI editing and PID remapping
- Selectable low-latency encoding modes for live applications
- Web-based management and monitoring plus local LCD control
Technical Specifications
| Video | |
|---|---|
| Encoding | MPEG-2, MPEG-4 AVC/H.264 |
| Input | HDMI x4 (or SDI x4) |
| Resolution | 1920x1080_60p/50p (H.264 only), 1920x1080_60i/50i, 1280x720_60p/50p, 720x480_60i, 720x576_50i |
| Low latency modes | Normal, Mode 1, Mode 2 |
| Audio | |
| Encoding | MPEG-1 Layer II, MPEG-2 AAC, MPEG-4 AAC, AC3 2.0 (optional) |
| Sample rate | 48 KHz |
| Bit rate | 64, 96, 128, 192, 256, 320 kbps |
| Output (DVB-C) | |
| Standard | J.83A, J.83B, J.83C |
| MER | ≥42 dB |
| RF frequency | 4 carriers combined output; 30...960 MHz, 1 KHz step |
| RF output level | -30...-10 dBm (77...97 dBµV), 0.1 dB step |
| Symbol rate | 5.000...9.000 Msps adjustable |
| Constellation (Annex A, 8 MHz) | 16/32/64/128/256QAM |
| Constellation (Annex B/C, 6 MHz) | 64QAM / 256QAM |
| Output (DVB-T) | |
| Standard | EN300744 (COFDM) |
| Bandwidth | 6, 7, 8 MHz |
| 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, 8K |
| Management | |
| Local interface | LCD + control buttons |
| Remote management | Web NMS (RJ45, 100 Mb/s) |
| Output | |
| Stream output | ASI out (BNC); 4x SPTS or 1 MPTS (RJ45, 100 Mb/s) |
| General | |
| Power supply | AC 100V...240V |
| Dimensions | 420 x 400 x 44 mm |
| Weight / Operating temperature | 4.5 kg / 0...45 °C |
More products in this category
HDM-9400
All-in-one HDMI encoder-modulator for DVB-C/-T head-end channels
HDM-9500
All-in-one HDMI encoder-modulator with DVB-C/T RF and IP output
HDM-12220C-T
All-in-one encoder-modulator for DVB-C/T head-ends with IP output