FU4637SA Encoder Modulator
16 CVBS input with MPEG4 AVC/H.264 Video encoding. 128 IP (100/1000M)input over UDP and RTP protocol. IP (4*MPTS) output as mirror of 4 carriers over UDP and RTP, 100/1000 Base-T Ethernet interface (Multicast/unicast).
Key Specifications
- Input 16 CVBS inputs , DB15-To-RCA interface128 IP (100/1000M)input over UDP and RTP protocol1DVB-C tuner input for re-mux (optional)
- Encoding MPEG4 AVC/H.264(HP/MP/BP)
- Bit-rate 64/128/192/224/256/320/384Kbps each channel
- Audio Encoding
- Constellation 16/32/64/128/256QAM
- Audio Gain 0-255 adjustable
- GOP Structure IPP (P frame is adjustable)
- Resolution 24-bit
Overview
FU4637SA is a high performance and cost-effective encoder modulator designed by Fmuser. It supports 16 CVBS input with MPEG4 AVC/H.264 Video encoding and 4ch DVB-C/T non-adjacent carrier outputs with multiplexing (and scrambling in DVB-C out version) included. It also supports up to 128 IP input for re-mux and IP (4MPTS) output through Data port as mirror of carriers. FU4637SA is also characterized with high integrated level, high performance and low cost. This is very adaptable to newly generation CATV broadcasting system. Key Features: 16 CVBS input with MPEG4 AVC/H.264 Video encoding; 128 IP input for re-mux over UDP and RTP (1DVB-C tuner input for re-mux optional); Support MPEG1 Layer II Audio encoding and support audio gain adjustment; Support PID remapping/ PSI/SI editing and inserting; Support 4*Mux-SCR-DVB-C output, or 4*Mux-DVB-T output; Support 4*MPTS IP over UDP and RTP output, 1*ASI output (optional); Support Logo, Caption and QR Code insertion(Language Supported: 中文, English,; العربية, ไทย, हिन्द, for more languages please consult us…); Support IP Null PKT filter; Real-time effective encoding output bit-rate monitoring
Technical Specifications
RF Modulation
Modulation Parameters
| Constellation | 16/32/64/128/256QAM |
| FFT mode | 2K, 4K, 8K |
| Bandwidth | 6M, 7M, 8M |
| Constellation | QPSK, 16QAM, 64QAM |
| Guard Interval | 1/4, 1/8, 1/16, 1/32 |
| FEC | 1/2, 2/3, 3/4, 5/6, 7/8 |
RF Output
| MER | ≥40dB |
| RF frequency | 50~960MHz, 1KHz step |
| RF out | 4*COFDM DVB-T non-adjacent carriers |
Tuner / Demodulator
| Input | 16 CVBS inputs , DB15-To-RCA interface128 IP (100/1000M)input over UDP and RTP protocol1DVB-C tuner input for re-mux (optional) |
DVB-C
| Modulation | DVB-C |
Encoding & Decoding
Video
| Bit-rate | 1Mbps~5Mbps each channel |
| Rate Control | CBR/VBR |
| GOP Structure | IPP (P frame is adjustable) |
| Resolution | 24-bit |
Audio
| Audio | Encoding |
| Sampling rate | 48KHz |
| Audio Gain | 0-255 adjustable |
| Bit-rate | 64/128/192/224/256/320/384Kbps each channel |
Codec Settings
| Encoding | MPEG4 AVC/H.264(HP/MP/BP) |
Since 2009
Manufacturing Experience
200+
Countries & Regions Served
2-Year
Warranty
Factory
Direct Pricing
Ideal Applications
Related Engineering Guides
Practical guides on selecting and deploying encoder modulator equipment.
IPTV Headend Brands Compared: Triax vs Televes vs Wisi vs Factory-Direct
6 min read · August 15, 2026
Selection GuideHDMI to Digital TV Modulator: The In-House Distribution Guide
6 min read · August 15, 2026
Solution GuideHotel IPTV System: Complete Guide for Hotels, Resorts & Hospitals
7 min read · August 15, 2026
Interested in FU4637SA Encoder Modulator?
Get factory direct pricing, lead time, and technical support from our engineering team.