Satlink WS-7990 能将4路1080高清信号调制成标准DVB-T信号并通过RF接口输出到同轴电缆或DVB-T发射机。

一台WS7990相当于4台Satlink WS-6990 单路DVB-T调制器（https://item.taobao.com/item.htm?spm=a1z10.5-c.w4002-1447189826.30.491733c3ecEFOm&id=556948642787）

简介：
High level of integration, high-performance, Full-featured, integrated design:
2 HDMI / AV  inputs  modulator that converts  source to a DVB-T over RF channel
Standard COFDM modulation and H.264 encoding
Support High-Bandwidth Digital Content Protection HDCP
Bandwidth: 6/7/8MHz
Frequency range: 50~860MHz
Continuously adjustable RF signal output level range 69dBuV to 100dBuV
2.4-inch color LCD display
Small size and light weight
Carriers 2K and 8K
User friendly setup and cool 
 
功能参数:
DVB-T Standard
HD Broadt 1080i
Frequency range:  50 to 860 Mhz
RF Out Level: Adjustable  from 70dBuV to 100dBuV
DVB-T modulati: QPSK, 16QAM, 64QAM
Channel Bandwidth: 6/7/8 Mhz
Carriers: 2K, 8K
Guard Intervals: 1/4, 1/8, 1/16, 1/32
Code Rates: 1/2, 2/3, 3/4, 5/6, 7/8 
Impedance: 75 Ohm  ( 50 opt. )
MER: 35 dB
Spectrum Shoulders: 55 dB for  perfect adjacent-channel operati
Out Filter: -70 dB of Harmonic  and spurious suppression
Encoding Delay 600-800 milliseconds
Video Input Formst: CVBS, HDMI
Encoding Format: H.264
Video Resolution: 576i PAL/ 480i NTSC/ 1080p
Connector: RCA/ HDMI 1.3
Audio Input Format: Stereo L/R channel
Connector: RCA
Power Source: DC 12V 1,5A
Operating Temperature: 0- +50°C
Dimensi: 280 x 203 x 61mm
Weight: 1.26KG

包装清单：

WS-7990 四路高清DVB-T 调制器 X 1

12V 5A电源 X1

USB 数据线 X1

光盘英文说明书 X1