Overview
QAM modulator with DS3 is one of the main equipment of cable digital TV head-end, receiving data from the encoder, multiplexer, DVB gateway, scrambler, video server and other DVB transport stream, and make RS codes, convolution interleaving and QAM modulation channel processing, RF output. Use a new generation of integrated circuits BCM3034, low-power, high index.
Features
1. Meet DVB standard channel coding
2. Support full range of variable Symbol Rate and QAM mode
3. 8M cache, anti-burst stream
4. Data filling function
5. Support IP data injection
6. Configurable PID filter, re-mapping, PSI, SI information synchronization update
7. Support NIT table inserts
8. Real-time transport stream monitoring
9. PCR correction
10. Fixed or variable frequency output
11. Provide ASI and DS3 (Optional) Enter interface
12. Provide RF output monitoring port (-20dB)
13. Local and remote control
14. LCD display in Chinese and English, easy and flexible to operate
15. High reliability design, stable operation
16. Support Annex-A (Europe) and Annex-B (America)
Technical Specification
|
Modulation Mode |
16,32,64,128,256,1024QAM |
|
Symbol rate |
1~7Mbaud/s |
|
Error-correcting codes |
RScode188/204 |
|
Input data code rate |
1.5~51Mbps |
|
Channel Data Rate |
20~56Mbps |
|
MER |
>33dB |
|
BER |
0 |
|
Input interface |
2 ASI in(DVB standard) DS3 |
|
RF Frequency |
110MHz~860MHz (agility or fixed output) |
|
Output LEV |
>=115dBmV |
|
Output LEV adjustable range |
0-16 dB(0.5 dB stepping) |
|
Impedance |
75ohm |
|
Output Return Loss |
>=12 dB |
|
General Features |
Size |
44mm*482*410mm |
|
Environment |
0 ~ 45(Operating);-20 ~ 80(Storage) |
|
Power |
220VAC(-+10%),50Hz,25W |
|
Management |
Network RJ-45 10/100 M |
|
Keyboard + LCD |
Network Management
P1: DVB-C Modulator-parameter setting
P2: DVB-C Modulator-edit NIT
P3: DVB-C Modulator-PID Pass-through
P4: DVB-C Modulator-PID filter
P5: DVB-C Modulator-edit PSI
P6: DVB-C Modulator-monitor
