QAM Digital Modulator

1) THE FUNCTION OF SYSTEM
This product is a kind of high-powered digital modulator. It could receive TS data stream and do interlaced processing, RS coding and QAM modulating. It exports modulated intermediate frequency signal to the up frequency changer of the transmitter, and then the digital video-audio signal and other data is transmitted in CATV or MMDS network.
2) CAPABILITY PARAMETER
Accord with DVB-C standard ETSI/EN300 429
Modulate mode：4/16/32/64/128/256QAM
Symbol rate：1~7Ms/s
TS stream input interface：ASI、SPI
Output intermediate frequency optional：35.25MHz36MHz36.125MHz
RF Output frequency range：110MHz~860MHz
RF Output gain range：100dBuV~120dBuV
Load-noise rate is high, the phase and amplitude error is very low
With null filtrating and PCR rectifying
With network manage, it could insert NIT
Package format：Auto-checking（188/204 B per pack）
Input
Input interface：1 track ASI standard input streamBNC-75
Input package structure：204 or 188B/pack adaptive
Input program stream：MPEG-2 standard TS, BURST and invariable clock mode are compatible
Bit-rate range：0~56Mbps
Intermediate Frequency Output
QAM modulate：16/32/64/128/256QAM
Output symbol rate：1~7Ms/s
Phase noise：≤-90dBc &10KHz
Intermediate frequency：35.25MHz36MHz36.125MHz
Intermediate frequency level：95dB
Restrain out of band：60dB
Port：BNCimpedance75
RF Output
Frequency：110~860MHz or standard immobility channel
Level：120dBuv
Restrain out of band：60dB
Port：F tie-inimpedance75
Network manage interface：10Base-TRJ45
General characteristic
Power supply：220V AC±20%50Hz30W
Work temperature：0℃~50℃
Storage temperature：-20℃~70℃