Product Specifications
| Prod Model: |
CKUB-T200 |
| Markets: |
North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe |
Product Description
Wide-band frequency Transmission Network Technology is an innovative technology using one Wide-band frequency transmitter to achieve multi-channel transmitting, solving the existing problems of single-channel system in one fell swoop. It is conducive to build up the terrestrial digital TV multi-channel single frequency network with effective coverage and strong stability.
With this innovative technology, our one set of transmitter can transmit multiple TV channels, breaking through the limitation that the traditional transmitter only can do the single channel transmitting, which makes the investment in digital TV system significantly reduced, and our transmitter also do not need to use the high power synthesizer, realizing the adjacent channel transmitting, it dramatically increase the utilization of wireless frequency resource, and the transmitting frequency can be modified at any time in the transmitting process. Since we just need one set of transmitter to build the network, the later stage energy consumption and the operation cost will be dramatically reduced. Building the network with only one transmitter, it is relatively simple than the traditional networking method, it can effectively reduce the failure rate, this will effectively reduce the maintenance cost. Because our transmitter have reduced the power combiner insertion loss, this will increase the effective power of the transmitter, therefore, under the equal transmitting power, our Wide-band frequency transmitter can cover more large aera than the traditional single-channel transmitter, achieve the goal that covering the large area with low power.
Main Features
470--862MHz Wide-band frequency response and low noise design
Design of low power consumption and linearization advances emitting power of the transmitter and reduces nonlinear distortion.
Very low group delay feature, suitable for digital signal transmission.
ALC keeps output of constant power, output VSWR detecting protection
Apply to single-channel or multi-channel UHF digital television transmission system
Be used in the Wide-band frequency repeating of HFC, AML, or MMDS digital TV signal
Realize wireless network coverage of digital TV at a low cost.
Modular design simplifies installation, field services and upgrade.
Automatic and manual switching backup systems available.
Build-in lightning protector with current-dividing series power prevents lighting surge and instant overvoltage.
Local monitoring and control.
Wireless remote monitoring and control (Optional)
Wide-band frequency transmitter performance characteristics
The Wide-band frequency transmitter should have the following characteristics beyond the normal transmitter required:
1. Wide-band frequency response (120MHz frequency bandwidth) and low noise design(6 dB).
2. Modular structure, the power amplifier module hot plug design, to facilitate onsite equipment maintenance.
Balanced coupling structure, without the power combiner. On the multiple group power amplifier modules status, one group power amplifier module can be hot-swappable, in addition to lower transmission power, the machine performance doesn't be affected.
3. The Power is measured by the output port full digital power. The equipment power should not be measured by 1dB Gain compression point output power. The equipment total power efficiency should not be less than 18%.
4. Frequency stability < 5× 10-8(Using an internal reference source), < 5× 10-11(using an external reference source), meet the needs of Wide-band frequency adjacent channel transmitting.
5. Meet the transmitting coverage needs in different power levels, having the high-power Wide-band frequency transmitter type which digital power no less than 800W.
|
Parameters |
Symbol |
Min. |
Typ. |
Max |
Unit |
|
Input and output frequency range |
A |
FOUT |
470 |
|
680 |
MHz |
|
B |
650 |
|
862 |
Conversion gain flatness
over all frequency band bandwidth |
DGa |
|
1 |
2 |
dB |
Conversion gain flatnesss
over 8MHz bandwidth |
DG8MHz |
|
0.3 |
0.5 |
dB |
|
Noise Figure |
Nf |
|
3.0 |
6.0 |
dB |
|
Input Signal Level |
PIN |
89 |
|
103 |
dBmV |
|
ALC range |
DGALC |
15 |
20 |
|
dB |
|
ALC voltage control range |
VALC |
0.6 |
1.2 |
3.2 |
V |
|
Output power stability(ALC on) |
DPOUT |
|
|
1 |
dB |
Out-of – band Harmonic Level
(External Connection Filter) |
H |
|
|
-60 |
dBc |
|
In-band spurious signal level |
Spur |
|
|
-55 |
dBc |
|
Group Delay |
GD |
|
|
30 |
ns |
|
Input Return Loss |
RLIN |
15 |
|
|
dB |
|
Output Return Loss |
RLOUT |
17 |
|
|
dB |
|
Digital average output power * |
Single-channel |
PAVG |
53 |
|
|
dBm |
|
Multi-channel |
50 |
|
|
|
Spectrum Shoulder Distance @fcenter± 4.2MHz (Single-channel) |
Shoulder |
36 |
42 |
|
dB |
|
Error Vector Magnitude |
EVM |
|
|
2 |
% |
|
Signal to Noise Ratio@8HMz bandwidth |
S/N |
40 |
|
|
dB |
|
Magnitude Linearity(AM-AM conversion) |
LAM-AM |
|
|
0.3 |
dB |
|
Phase Linearity(AM-PM conversion) |
LAM-PM |
|
|
2 |
Degree |
|
Mean Time Between Failures |
MTBF |
45000 |
|
|
hour |
|
Input Impedance/Connector |
50W/SMA-50K |
|
-20dB Input Monitoring Impedance/Connector |
75W/FL10-75K, 50W/SMA-50K |
|
Output Impedance/Connector |
50W/N-50K, 50W/L29-50K |
|
-50dB Output Monitoring Impedance/Connector |
50W/SMA-50K |
|
Backup Cut-over Guard Signal Output Connector |
BNC-75(TTL Low-Normal/TTL High-Abnormal) |
|
Detection Display |
LED Display Screen/Function Key/LED indicator |
|
Local status monitoring port connector |
RJ-45 (10 Base-T) / DB-9J(RS-232) |
|
Wireless Long-distance Monitoring Port Connector |
SMA-50K(optional) |
|
Power Supply |
AC220V± 15% / AC380V± 15% (47~63Hz) |
|
Power Consumption |
1.0 KW |
|
Power Supply Connector |
IEC320 |
|
Cooling System |
Temperature-controlled forced air cooling |
|
Operating Temperature Range |
-10 ~ +45° C |
|
Operating Humidity |
0 ~ 95%, non-condensing |
|
Storage Temperature |
-55 ~ +85° C |
|
Storage Relative Humidity |
0 ~ 95%, non-condensing |
|
Size(W’ H’ D)/Weight |
620mm´ 810mm´ 960mm /120kg |
Guilin CEKE Communication Equipment Co., Ltd., located in the picturesque Guilin High-Tech District Information Industrial Park, is a private joint-stock enterprise with more than 10-year experience in high-frequency microwave equipment research, design, production, installation, debugging and maintenance. CEKE has a number of senior high-frequency technology R&D experts, first-class instrumentation equipment and 3000 square meters of production and maintenance facilities.
CEKE has a long-term good R&D cooperative relationship with China North Industries Group 206 Institute, Guilin Institute of Automation Technology, Beijing University of Posts and Telecommunication and Guilin College of Aerospace Technology. With maintenance capability of most global communication microwave equipment, mobile base stations, and repeater and wireless bridges, CEKE now undertakes the imported mobile communication equipment maintenance business for more than half of Chinese provinces. With the capability of the research, design, production, installation, system integration and network planning of digital microwave transmission equipment, digital-analog compatible MMDS transmitters and terrestrial digital TV transmission system equipment, CEKE is an industrial leader especially in product and service quality.
Aiming at solving the existing problems in GB terrestrial digital TV networking constructions, CEKE carried out a technical research and successfully launched the first GB terrestrial digital TV broadband transmission system in June, 2008. Now, the same kind of broadband system projects have been opened up and operated in more than 25 stations. 2 multi-channel single-frequency network system, with its mature technology, stable system and significant performance, has become the best DTMB network construction solution.
We are the first company propose BROADBAND concept in China which make our transmitter different from the other suppliers' from the other countries and the other suppliers' in China. With the innovative broadband adjacent transmitting technology, our one set of transmitter can replace several sets of traditional transmitters, realizing the large area coverage with small power and long-distance networking setup, which dramatically reduce the investment of the Digital TV transmission system construction.
