QPSK Modulator

La description

Outline QPSK digital TV 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 could be applied with 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 base band shaping processing, etc. all these contribute a high guarantee to the data transmitting performance. In a word, it’s a high performance QPSK modulator for transmitting digital TV and other digital signal. Features ●Complying DVB-SETS******1 QPSK modulating standard ●IF output frequency range **0MHZ~**0MHZor**0MHz~***0MHz ●Build-in frequency synthesizer, support uplink frequency conversion in U band or 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 *5Ω Type F-Head Male RF Output range **0MHz~**0MHz/**0Mhz~***0Mhz/ **0~***0MHz Symbol Rate 2～*5 Mbaud／s Input TS Amplitude **0mV±*0 Output Frequency Adjustment Step by **5Khz or Step by 5Hz(optional) The Max. Output Level ≥0dBm Input Amplitude of External *0MHz Oscillator ≥*0dBm Out-of-Band suppression ≧*0dB Output Level of Monitor Port **0dB compared with output level The Distance between Installation Hole **0mm MER ≥*4dB BER ≤1X***8 Output level adjustment ***0dB(0.5dB stepping) FEC 1/2, 2/3, 3/4, 5/6, 7/8(optional) Miscellaneous Dimension *4mm´**2mm´**0mm Temperature ***5℃(Operating); *****0℃(Storage) Power **0V/**0VAC±*0%, *0Hz, *5W