Summary of IRD
The SOFTEL SFT3301A QAM modulator is a high performance modulator developed according to DVB-C (EN300429) standard which is the standard of the European broadband satellite telecommunication. It provides a more powerful receiving ability of various TS come from encoder, multiplexer, DVB gateway, scrambler and video server. In addition, the modulator also has the function of outputting RF, and simultaneously disposes the TS by RS encoding, convolution interlacing and QAM modulating. This device supports local and remote control through NMS software. For the field scope, it can be used for Broadcasting, Interactive Services, News Gathering and other Broadband satellite applications.
Characteristic of QAM Modulator
1. Fully complying with DVB-C(EN300 429), ITU-T J.83A/B/C standard
2. Symbol rate adjusting range: 5.0Msps~9.0Msps
3. Five constellation modes: 16QAM, 32QAM, 64QAM, 128QAM and 256QAM
4. Support ASI input
5. Support scrambler
6. Huge buffer memory for the burst code stream
7. Intelligence null packet deleting, automatically TS filling
8. Support PCR accurate adjusting
9. Support NIT insertion
10. Support PID filtering, re-mapping and PSI/SI update synchronously
11. RF Output frequency range: 30MHz~1000MHz in 1 kHz step
12. Output frequency attenuation range: -16dBm~+12dBm in 0.5dB step
13. LCD and keyboard operation
14. NMS operation
Technial Parameter of QAM Modulator
| Input | 1channle ASI input, BNC interface, 75Ω |
| Modulation | QAM Channel | 1 |
| Standard | EN300 429/ITU-T J.83A/B/C |
| Symbol Rate | 5.0~9.0Msps,1ksps stepping |
| Constellation | 16,32,64,128,256QAM |
| FEC | RS(204, 188) |
| RF Output | Connector | F Type, 75Ω impedance |
| RF Range | 30~1000MHz,1kHzStepping |
| Output Attenuation | -16dBm~+12dBm,0.5dB Stepping |
| System | LCD/keyboard operating and NMS support |
| English and Chinese interface conversion |
| Ethernet software upgrading |
| General | Dimension(W*D*H) | 482mm×300mm×44mm |
| Weight | 2.3kg |
| Temperature | 0~45ºC(Operation) ; -20~80ºC(Storage) |
| Power | AC 110V±10%,50/60Hz; or AC 220V±10%,50/60Hz |
| Consumption | 22W |