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JF640-9 is headend and repeat equipment with the professional
broadcasting quality according to DVB standard. Its main function
is decoding signals modulated by COFDM up to DVB-T to TS stream and
then modulating digital TV signal up to QAM standard transmitted
via HFC or MMDS. The modulator converts input data streams up to
DVB-T standard into Radio Frequency (RF) signals. It could extend
ground broadcasting transport network and converter interface in
the headend. It not only transmit digital signals effectively, but
also sends other value-added services to thousands of families.
JF640-9 has the function of remote supervision and control. JF640-9 COFDM converter QAM modulator block diagram as follow: Features: ASI processing units converter input signals to parallel TS, then
send data processing units (apply to JF640-9 only). COFDM processing units tune and COFDM demodulate input RF signal
,then send to data processing units when converted to parallel TS Data processing units convert input signals from various interface
to standard signals and process data in order to carry out QAM
modulate pretreatment. QAM modulation units modulate data stream to spectrum signals and
output to 35.56/36/36.15/44MHz IF signals. Keyboard input decided by CPU/LCD/LED/keyboard units. LED’s
function is displaying and aptitude controlling. Features: (apply to GQ-3682 QAM modulator only about parameter of
ASI interface and correlative devices). Two Channels input interface( ASI and COFDM), with ASI and COFDM
loop output. -20dB RF testing interface with IF output IF and RF output optional ASI input data bit rate:216Mbps(max, per channel) Remultiplex 2 channels TS PID filtering and reset, users add and delete programs at will,
auto-mapping PID of program selected. Support user-defined PID and
input bypass. Support ITU-T J.83A and B FEC up to DVB-C Work in mode 16QAM、32QAM、64QAM、128QAM、256QAM Input interface：ASI、RF（COFDM tuner） Input RF（COFDM） frequency：170MHz-860MHz Input RF BW：6MHz、7MHz、8MHz Inside-feedback electricity：RF input supply DC+9V or DC+12V Input data(ASI interface) bit rate:1.5～51.6Mbps Output data bit rate:2～56Mbps Output signals BW：1.15～8.05MHz(the Fall is 0.15) Output data symbol ratio：1～7Mbaud/s Output RF frequency：48～860MHz Output level：100dBuV～115dBuV(stepping available) 188 and 204 packet auto-identify, 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. NIT mapping and sending, support 44 NIT mapping PID filtering and re-mapping Various PSI/SI information tables pick-up, parse and modification
(customization available). SI information replacement and insertion Input data null packet filtering and output data stuffing PCR correction function can correct various input data,
respectively and accurately Show and inspect system input bit rate and valid bit rate real-time -20dB RF testing interface with IF output Outstanding self-adapting filtering circuit designs to maximal
reliability and availability. Error alarming LCD display Network interface introduces remote maintenance, supervision and
software upgrade Power off memory Network interface introduces remote maintenance, supervision and
software upgrade |
JF640-8 is a headend equipment with the professional broadcasting quality according to DVB standard . Its main function is to directly convert signals ...
JF640-9 is headend and repeat equipment with the professional broadcasting quality according to DVB standard. Its main function is decoding signals ...
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JFCR-805 Standard Digital TV STB is a cost effective STB. It fits for DVB-C and MPEG-2 standard. It can support JUFENG CAS system. Features Adopt ...
Fully compliant with DVB-T digital TV reception standards ,HDTV/ SDTV MPEG-2 & MPEG-4 H.264 decoding Main Features: Fully compliant with DVB-T ...
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