SD-3730 COFDM modulator is in line with DVB standards for broadcasting professional level of head-end equipment.Its mainly function is to realize the COFDM modulation for the TS code stream which is in the line with TV standard and transmit from HFC network or MMDS network. SD-3730 COFDM modulator is widely used in the HFC,  MMDS network and 8GHz microwave system.
        SD-3730 COFDM modulator is in line with DVB standards for broadcasting professional level of head-end equipment.Its mainly function is to realize the COFDM modulation for the TS code stream which is in the line with TV standard and transmit from HFC network or MMDS network. SD-3730 COFDM modulator is widely used in the HFC,  MMDS network and 8GHz microwave system.

SD-3730 COFDM modulator consists the following moulds

Date processing unit transfers the signals from interfaces to standard signal ,which realizes the COFDM preprocessing.
COFDM modulating unite modulates the date stream to spectrum signal. IF modulating output is the IF signal which can be adjustable in the 35-37 MHz frequency.
RF modulating unite changes the IF to 48-860MHz TV channels. CPU/LCD/LED/keyboard finishes the keyboard input, LED display and intelligent control

 Mainly features

EN300744,support 6MHz/7MHz/8MHz bandwidth
Error correcting codes is fully in the line with DVB-T standard
Work in QPSK\16QAM\64QAM
Support the 2K/8K carrier wave working mode
FEC encoding support 1/2\2/3\3/4\5/6 and 7/8
Protection time Interval: 1/4\1/8\1/16\1/32
Input interface: ASI and SPI (E3/DS3 optional),provide corresponding loop output interface
The input data bit rate range : 1.5~31.67Mbps
Input signal bandwidth: 6/7/8MHz
RF range: 48~860MHz
Output electric level rang: 100dBuV~115dBuV (Stepping)
188/204 packet length adapting , display the input date format real-timely
Use Large cache design ,ASI interface supports burst and uniform input stream
Improve output bit stream efficiency
Have functions of NIT mapping and transmission,Support over 44 NIT mapping of frequency points
10 groups of PID filtering and re-mapping
Support extraction, analysis and modification of PSI/SI
Filter the empty input data packet and fill the output data
PCR correction function , accurate correct the PCR in the input data separately
Test and display the input system bit rate and effective rate real-timely
Adaptive filter circuit design ,ensuring the excellent band rejection
Provide -20dB RF test interface , IF output (Optional)
 Fault alarm display
 LCD display
Network controlling interface , realizing Centralized network management, remote upgrade and maintenance
Power-down memory function.