Summary of IRD
SFT3340B 4 in 1 QAM is a cost effective integrated QAM modulator newly designed by SOFTEL Company. This device is integrated up to 4 channel QAM modulating carrier outputs, in which each carrier has independent signal channel encoding and direct RF output. Therefore, the device is featured with excellent RF performance index. It supports 4 channel ASI inputs (4 QAM (J.83 A/B/C), 4 DVB-S tuner input or 4 DVB-S2 tuner input). Alternatively, this device can take various RF inputs of DVB-S/DVB-C/DVB-S2 signals by installing the relevant build-in tuners. Hence, one PCS 4 in 1 QAM modulator can work as 4 standalone QAM modulators, significantly reducing the network operators' head-end cost. SFT3340B can also support local and remote control to set its working parameters.
 
Characteristic of QAM Modulator

1. Fully comply with DVB-C (EN300 429) and ITU-T J.83A/B/C;
2. 4 adjacent channel QAM carrier wave
3. 4 channels ASI input (4 QAM (J.83 A/B/C), 4 DVB-S tuner input or 4 DVB-S2 tuner input) and support 188/204 byte TS packet
4. DVB-S/DVB-S2/DVB-C RF input (optional)
5. Support accurate PCR adjusting
6. Support five QAM constellation(ITU-T J.83A) modes: 16/32/64/128/256 QAM,
7. Support QAM constellation(ITU-T J.83B/ITU-T J.83C) modes: 64 /256QAM
8. Symbol rate adjustment range: 5.0Mbps~9.0Mbps
9. Support PSI/SI editing function
10. RF output range: 30MHz~960MHz in 1.0 kHz step
11. RF ATT range: -16dBbm~0dBm in 0.5dB step
12. Support input de-multiplexing and PSI/SI editing
13. Support LCD display and keyboard
14. Excellent RF output performance index, MER≥40db
15. Support network management(NMS/SNMP)

 
Technial Parameter of QAM Modulator