China First QAM Modulator was born in BC&TV Tech
Description
ZBL9020 Series QAM Modulator is the absolutely necessary transmission equipment for DTV network. TS data comes from SDH trunk network or from local equip-ment such as MPEG2 video server and multiplexer, is transmitted into QAM Modulator for error correct coding and QAM modulating, and then QAM Modulator outputs RF signals and transmits them to the CATV network (47MHz~862MHz). It provides
ASI & SPI interface that compatible with DVB-C standard, and/or provides DS3 interface which is compatible with many foreign manufacturers. In addition, it has a data-communication interface for both the local and remote network management.
Features
1 Large-scale data transmission speed with the range of input code stream: 1Mb/s~216Mb/s
2 Supports Physical broadband: 1.3~8MHz
3 Constellation: QPSK/16/32/64/128/256QAM
4 Totally comply with ITU-T J.83
5 Coding rate modulation: supports the adding & deleting of empty packages.
6 Agility or fixed frequency of output RF: 47~862MHz
7 Output level: >115dBμV(RMS)
8 Excellent Phase-noise index
9 Front control panel with control buttons and LCD display screen
10 Network management interface: users can actualize a series of network functions such as centralized network management, remote upgrade and main-tenance; the interface supports the control of QAM constellation, modulation symbol rate, frequency of output RF and output spectrum’s polarity; through
the interface, user can also monitor the total code rate, net code rate & package length of input transmission stream, properties of input interface and net
code rate of modulation output.
Functions
1 QPSK/16/32/128/256QAM modulation
2 DS3 interface (compatible with the data format of several foreign manufacturers such as BARCO、TandbergTTV or self-carried format)
3 Selectable input interfaces: DS3, ASI, SPI
4 Remote control by network manager or manual control with control panel
5 Fixed or agile frequency
Specifications
|
Item |
Units |
Value |
|
General Parameters |
|
Temperature Range |
°C |
-10~+40 |
|
Security Standard |
-- |
GB8898 |
|
Power Consumption |
W |
≤40 |
|
Power Voltage |
V |
~220±10% |
|
General Parameters |
|
Dimension:W*D*H |
mm |
482*320*44 |
|
Weight |
kg |
5 |
|
Input Interface |
-- |
BNC/75Ω(DS3)DB-25(SPI) BNC/75Ω(ASI) |
|
Output Interface |
-- |
F/75Ω |
|
Electrical Parameter |
|
Modulation Mode |
-- |
QPSK/16/32/64/128/256QAM |
|
Input Port |
-- |
DS3/ASI/SPI |
|
Input Speed |
Mb/s |
1~216 |
|
Modulation Bandwidth |
MHz |
1.3~8 |
|
Modulation Deviation Ratio |
dB |
≥32 |
|
Error of Vector Mistake (EVM) |
% |
≤1.6 |
|
Out-off-band Inhibition |
dBc |
≥50 |
|
Phase Noise |
dBc/Hz |
≤-85(@10KHz) ≤-100(@100KHz) |
|
Model No. |
|
Fixed Frequency |
Low-end Agile Frequency |
High-end Agile Frequency |
Full Channel
Agile Frequency |
Enhanced Full Channel
Agile Frequency |
|
ZBL9020A-XX |
ZBL9020A-JL |
ZBL9020A-JH |
ZBL9020A-JF |
ZBL9020A-AX-T[N] |
|
Output Frequency |
MHz |
47-862(fixed) |
47-500 |
500-862 |
100-862 |
100-862 |
|
Output Impedance |
Ω |
75 |
75 |
75 |
75 |
75 |
|
Output Return Loss |
dB |
≥12 |
≥12 |
≥12 |
≥12 |
≥12 |
|
Noise Ratio of Output Carrier |
dB |
≥45 |
≥45 |
≥45 |
≥45 |
≥45 |
|
Output Level |
dBμv(RMS) |
≥115 |
≥115 |
≥115 |
100-120 |
100-120 |
|
Output Level Adjustable Range |
dB |
0-20 |
0-20 |
0-20 |
0-20 |
0-20 |
|
Output Symbol Rate |
Mbaud |
≤6.952 |
≤6.952 |
≤6.952 |
≤6.952 |
≤6.952 |
|
Network Management Interface |
-- |
RS485(RJ45) |
RS485(RJ45) |
RS485(RJ45) |
RS485(RJ45) |
Ethernet Interface
(10M/100M) |