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JF640-1 QAM Modulator is headend equipment with the professional
broadcasting quality according to DVB standard. Its main function
is modulating by QAM TS stream accorded to DVB and ATSC,and then
transmitting via HFC or MMDS. The modulator converts input data
stream up to DVB standard into Radio Frequency (RF) signals. The
bandwidth is less than 8MHz in PAL system and the bandwidth is less
than 6MHz in NTSC system. The signals according to DVB standard
include MPEG-2 digital TV, digital broadcast, VOD, and other
digital signals such as video conference, Internet and IP phone,
which are up to DVB contribution protocol. JF640-1A QAM modulator
applies to flexible frequency, JF640-1B QAM modulator is used for a
fixed frequency, and the JF640-1C QAM modulator introduces
Intermediate Frequency (IF). JF640-1 QAM Modulator is used in broad
band digital application system such as HFC network, MMDS or 8GHz
microwave-system. It not only transmit digital signals effectively,
but also sends other digital value added services to thousands of
families. JF640-1 has the function of remote supervision and
control. Features: 188/204 packet auto-identification, displaying input data format
real time Large cache, ASI interface support input burst and average bit
stream, reforming bit stream average in order to promote the output
bit stream efficiency. The function of NIT mapping and sending, supporting NIT mapping of
over 44 frequency 8 PID filtering and re-mapping Various PSI/SI information tables pick-up, parse and modification
(customization available). Replace and insert SI information available. Inputs null data filtering and outputs data stuffing PCR correction function can correct various input data,
respectively and accurately Inputs the real time testing and displaying of the system and valid
bite rate Outstanding self-adapting filtering circuit designs to maximal
reliability and availability -20dB testing interface with IF output Failure alarming Power off memory LCD display ASI input (E3/DS3 optional) Various QAM working mode Network control interface realizes remote maintenance, supervision
and software upgrade |
JF650-6 professional receiver is the head-end product with broadcast professional quality. It is used to receive un-encrypted signals from satellite ...
JF640-1 QAM Modulator is headend equipment with the professional broadcasting quality according to DVB standard. Its main function is modulating by ...
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