Digital TV Headend QPSK modulator adopts advanced digital signal processing technology, of which receiving port can directly use digital satellite receiver for receiving, thus fully complying DVB-S standard. Not only can it gain relatively high frequency spectrum usage ratio, having very strong anti-interference and relatively high price performance ratio, but also it can well comply analogue FM microwave equipment.
QPSK digital TV modulator adopts various processing method, such as random energy spread processing, RS coding, convolution interweave, contracting convolution coding, and pre-modulating baseband shaping processing, etc. all these contribute a high guarantee to the data transmitting performance. In a word, its a high performance QPSK modulator fortransmitting digital TV and other digital signal.
Features:
*Complying DVB-SETS300-421 QPSK modulating standard
*RF output frequency range 450MHZ~1000MHZor950MHz~2150MHz
*Build-in frequency synthesizer, support uplink frequency conversion in U bandor L band
*Ports complying ASI, SPI standard
*Achieving MMDS effect with FM microwave
Specification:
Modulating Mode | QPSK | |
Input Port | ASI | DVB Standard |
Output port | Impedance | 75Ω |
Type | F Head | |
RF Output range | 450Mhz-1000Mhz 950-2150MHz | |
Symbol Rate | 345MBauds | |
MER | ≥14dB | |
BER | ≤1X10-8 | |
Output level adjustment | 0-20dB(0.5dB stepping) | |
FEC | 1/2,2/3,3/4,5/6,7/8(optional) | |
Miscellaneous | Dimension | 44mm´482mm´410mm |
Temperature | 0-45(Operating); -20-80(Storage) | |
Power | 220VAC±10%,50Hz,25W | |
