DVB MODULATOR
IMSC918 Eight-Channel IP Mux-Scrambler and
QAM Modulator Module
FEATURES 
- DVB-C modulation, EN300 429, ITU-T J.83A/J.83B/J.83C
- 1GigE Input, RJ45 interface or SFP
- Max. 256 channels TS over UDP/RTP, MPTS/SPTS Input, unicast/multicast
- Up to 840Mbps for all inputs
- Constellation of modes 16QAM, 32QAM, 64QAM, 128QAM, 256QAM
- Up to 8 adjacent QAM carriers out per card
- RF output frequency in range 30~860MHz
- RF output level with -16~0 dBm(per QAM carrier), 0.5dB stepping
- Excellent RF performance, MER≥40dB
- MPEG-2 / MPEG-4 AVC re-multiplexing, and MPTS/SPTS multiplexing available
- Accurate PCR adjusting
- Excellent performance of output frequency attenuation
- Synchronously support PID filtering, re-mapping(max. 180 PIDs) and PSI/SI edit
- Function of NIT insertion
- Support multiplexed or scrambled TS over UDP/RTP output
- Dual power supply (optional)
- Remote control by NMS/SNMP
- Upgrading by Ethernet interface
INTRODUCTIONS
IMSC918 Eight-Channel IP Mux-Scrambling and QAM Modulation Module is the latest QAM modulator developed by Trochilus, which integrated with multiplexing and scrambling functions at the same time. Each IMSC918 daughter card can work independently, due to the combining of 8*multiplexing modules, 8*scrambling modules and 8*QAM (DVB-C) modulation modules. It supports up to 256-channel IP MPTS/SPTS (per daughter card) input with its GigE port and 8*adjacent carriers (30~860MHz) output through the two RF output interfaces.
This IMSC918 IP Mux-Scrambling and QAM Modulation Module was designed in slot structure and being allowed of a maximum 3-card insertion into one device simultaneously. Its excellent and high integration, and powerful performance make it quite a good choice for the new generation CATV system.
This IMSC918 IP Mux-Scrambling and QAM Modulation Module was designed in slot structure and being allowed of a maximum 3-card insertion into one device simultaneously. Its excellent and high integration, and powerful performance make it quite a good choice for the new generation CATV system.
SPECIFICATIONS
| Input | ||
| TS | 1*GE, RF45 or SFP interface | |
| Input Channel Qty. | 256 | |
| Standard | EN 50083-9 ASI | |
| Transport Protocol | TS over UDP/RTP, Unicast / Multicast. IGMP V2/V3 | |
| Max. Bit-rate | 840Mbps for all inputs | |
| Multiplexing | ||
| Output Channel Qty. | 8 | |
| Max. PIDs | 180 for each channel | |
| Functions | PID remapping | |
| PCR accurate adjusting | ||
| Auto-generating of PSI/SI table | ||
| Scrambling | ||
| Max. simulscrypt CA | 4 | |
| Scramble Standard | ETR289, ETSI 101 197, ETSI 103 197 | |
| Connection | Local/remote connection | |
| Modulation | ||
| Standard | DVB-C(QAM), EN300 429 / ITU-T J.83A/J.83B/J.83C | |
| QAM Channel Qty. | 8 channels | |
| Constellation | 16QAM, 32QAM, 64QAM, 128QAM, 256QAM | |
| Symbol Rate | 5.0 ~ 9.0 Msps, successionally adjustable by 1ksps stepping | |
| FEC | RS(204, 188) | |
| Output | ||
| RF Output | RF Range | 30 ~ 860 MHz, by 1KHz stepping |
| RF Out Attenuation | -16 dBm ~ 0 dBm(per carrier), by 0.5 dB stepping | |
| Output Return Loss | >10 dB | |
| Phase Jitter | <0.5ºRMS | |
| Spurious Rejection | >55 dB | |
| MER | ≥40 dB | |
| C/N | >45 dB | |
| Connector | 2*F type, output port for 8 carriers, 75Ω | |
| IP Output | IP Output QTY. | 8 (1*GE, RJ45 or SFP interface) |
| Code Rate | 1~108Mbps per channel | |
| IP Out Format | TS over UDP/RTP, Unicast/Multicast, IGMP V2/V3 | |
| Management | ||
| Network Control | by NMS/SNMP | |
| Upgrading | by Ethernet software | |
| Language | English | |
| General | ||
| Voltage | 110~220V AC, 50/60Hz | |
| Consumption | 22 W | |
| Environment | 0~45°C (Operation), -20~80°C (Storage) | |
| Dimension (W*D*H) | 630*440*44.5 mm | |
| Net Weight | 10 KGS | |
DIAGRAM
REAR PANEL
