Modular design, easy swapping.
An uplink optical receiver module may contain four uplink receiving optical, used to receive four optical signal and converted into RF signal, and through RF preamplification, then through gain adjustable electronic attenuator control output. Photoelectric conversion part adopts imported high sensitivity and low noise pin photo detector, RF amplifier circuit with amplification using imported low noise high gain transistors, low noise and low distortion, won the largest voltage gain.
Uplink optical receiving module in the received optical signal into the RF signal at the same time, through sampling and a / D conversion circuit and communication interface circuit and state display system CPU to maintain data exchange, to show in detail the work of the machine state.
The front panel is provided with a working state indicator, touch button switch and the optical input port 4.
Advanced large scale electrically adjustable attenuation function and the range of 0 ~ 30dB to 0.1dB/ file to step into the implementation of continuous adjustable, through system platform function button operation or by remote control of the network management system.
Built in microprocessor, the equipment of the working status parameters and fault information can be through the centralized monitoring unit display in the VFD display, but also through the system platform of the RJ45 network interface, to achieve centralized monitoring network.
1 Road 2 Road 3 Road 4 road output mixed, mixed output. While the built-in 4 independent level detection circuit.
Ascending RRX200M uplink optical receiving module convert the uplink optical signal into RF output into the headend signal processing equipment, which constitute the uplink feedback channel. Modular uplink optical receiver is mainly used for uplink TV image signal, digital television signals, telephone voice signals and data (or data compression) received signal. This module contains four light detectors, used to receive four optical signal and converted into RF signal, then respectively for RF preamplifier, after can be modulated electron attenuator control gain output amplifier.
RRX200M uplink optical receiving module and the upstream optical signals with high sensitivity optical detection devices shift into electrical signals, the low noise preamplifier amplifier, electrically adjustable attenuation control circuit, to the final RF power amplifier output, micro control unit of uplink optical receiving module for all key parameters to monitor. Control unit can continuously monitor the performance of the system, automatic monitoring of all the performance parameters and to optimize the system, the information collected by the microprocessor will be fed back to the condition monitoring system, through the platform of panel display information displayed.