QPSK Modulator MSD-100


* A modulator MSD-100 is intended for signal shaping according to the DVB-S standard in frequency range of   950...2150 MHz

ЦФНЧ - a digital low-frequency filter. A convolutional coding is selected from the series 1/2, 2/3, 3/4, 5/6, 7/8 (a convolutional polynomial g1(x)=133, g2(y)=171). The value of a convolutional coding and a centre frequency are programmed by a customer via a port RS-232 of a computer. When ordering a modulator indicate the range of the modulator of 950 - 1549MHz or 1550 - 2150MHz.

Product specifications
Output level 0...-20 dBm
Operating frequency range The 1st variant 950-1549 MHz
The 2nd variant 1550-2150 MHz
Step of operating frequency tuning 1 MHz
Internal coding Convolutional coding К=7 (177, 133)
Coding rate 1/2, 2/3, 3/4, 5/6, 7/8
External coding Reed-Solomon (204, 188, Т=8)
Randomizer/Interleaver Convolutional/ I=12
Modulation kind QPSK
Output symbol rate 27.5 Msps
Front-End interface ASI (F-connector, 75 Ω)
Voltage supply/Consumption current 12V / 0.4 A
Dimensions 193x102x35 mm
Weight 0.4 kg