Digital TV Headend QPSK Modulator 1. Comply with DVB-SETS300-421 QPSK modulating standard 2. Build-in DDS frequency synthesiz

Digital TV Headend QPSK modulator CATV device

Outline

   JXDH-6502 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 can well comply analogue FM microwave equipment.

   JXDH-6502 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.

 

Features

Comply with DVB-SETS300-421 QPSK modulating standard;

Frequency output range 250-750MHz, 450-1000MHz, and 950-2150MHz for random option;

Build-in DDS frequency synthesizer, support L band uplink frequency conversion; Support minimum 5MHz adjustment of the output frequency;

Support input system efficient rate real time detect display and alarm display;

Output level is adjustable from 0-20dB through adjust the panel, 0.5dB per level;

Interface meet ASI standard;

Capacity stable and reliable, strong to anti-jamming.

Performance index

Modulate mode		QPSK
Input port		ASI standard port
Input TS stream range		800mV±10
Output port		75Ω F head Male
Frequency output range		250-750MHz, 450-1000MHz, 950-2150MHz optional
Output frequency tune stepping		Glance: 125KHz,Fine: 5Hz(Customize)
Max Output level		≥0dBm
Output level adjustable range		0-20dB(0.5 dB stepping)
Symbol rate		3.5-43MBauds
FEC		1/2, 2/3, 3/4, 5/6, 7/8 for random option
Ext 10MHz source input range		≥10dBm
Outside Band noise restrain		≥ 50dB
Output monitoring level		-20dB,compared with output level
Miscellaneous	Dimension	44mm×482mm×330mm
	Temperature	0-45 centigrade(work);-20-80 centigrade(storage)
	Power	110-220VAC±10%,50/60Hz,25W
	Installation hole distance	460mm

Appearance and Illustration

Application

MMDS digital TV head endSatellite digital TV broadcastingTerrestrial digital TV

Image SuperviseVideo-On-Demand (VOD)Long-distance teachingVideo Conference

Production equipment

   

Testing equipment

 

Package process