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The Structure of Transmitter：
（1）Filter Modules：Filter the sideband signal, only take the actual signal and send it to the power amplifier.
（2）AGC Amplifier Module：the module is make up of IF amplification and AGC decay control.
（3） Promote Power Amplifier Modules: the module can amplify filtered signal. It is composed from 5 amplifier pipes and has power detector and current detection. （4） Aftermost Amplifier Module：It is adopt balance amplifier program to improve reliability. Each channel has separate power supply and temperature protection. The module has power detector current detection. The power supply voltage is +48 V. （5）According to the installation and use of the equipment, the end output will equip more high-power cavity filters.
Performance：
★ Through information transmitting cable, this system can connect the indoor controlling equipment and outdoor controlling equipment, and can monitor the indoor working conditions, such as voltage, transmitting power, temperature, etc, and also can adjust the indoor transmitting power and clear the alarms through touch screen.
★ Perfect self-diagnosis and protection features, users can timely monitor the working state.
★ The low-phase noise, ensure high-quality digital signal transmission
★ Compatible with a variety of digital modulation.
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Model |
MK-200W-6 |
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Analogy Index |
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|
500MHz-700MHz |
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power Output Stability（ALC open） |
＜±0.3dB |
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Input Frequency Range |
500MHz-700MHz |
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Maximum Gain |
70dB |
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Discrete Inner Band Distortion and Harmonic Parasitic |
＜-60dBc |
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Outer Band Distortion and Parasitic |
＜-60dBc |
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Group Delay |
＜±10ns |
Frequency-amplitude Characteristic (within 100 MHz bandwidth) |
±0.5dB |
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Noise Index |
＜0dB |
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Input Level (ALC open) |
＜85～100dBuV |
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Input Port Echo Ullage |
15dB |
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Output Port Echo Ullage |
18dB |
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Digital Index |
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Data Average Power |
200W |
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|
-36dBc |
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Frequency Response(within an 8 MHz bandwidth) |
＜±0.2dB |
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Input Signal Modulation Manner |
QPSK,64/256 QAM,COFDM,AM,FM,DVB-T,DMB-T/H |
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Vector Error Rate(EVM) |
＜2% |
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Common Specification |
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Electricity Consumption at 25°C |
direct current: 12V/4A,48V/8A
alternating current: 220V/4.5A |
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Working Temperature |
-20～+60 °C （Indoor） |
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Input Connector |
50Ω/N head-negative |
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|
50Ω/N head-negative |
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Monitor Port Connector |
Four-core aviation socket |
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Relative Humidity |
100% |
|
|
The natural convection cooling of fan |
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Working Voltage |
220VAC±10%/50Hz |
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