Ceyear 4041 Series, User Manual

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Chapter X Working Principle
133
FPGA after the AD conversion to complete the digital down-conversion, IF filtering. video filtering, etc.
CPU board consists of the power conversion and management circuit, interface and display circuit, FPGA/CPLD
control and digital signal processing circuit, and ARM core module to realize the AC/DC conversion of power
supply, power supply management, digital signal processing, logic circuit control, etc., and outputs the test results
to the liquid crystal display in the form of sweep curve, waterfall map, etc.
Frequency synthesizer board can provide 10MHz reference input/output function externally, and the internal
reference loop output signal serves as the frequency reference of the local oscillation and provides the
high-stability clock signals for AD sampling and FPGA. Local oscillation generation circuit provides the local
oscillation signal for the mixer in the microwave and millimeter wave frequency conversion module, which is
related to the hardware sweep speed, phase noise, sideband stray and other specifications of the whole machine.
Tracking generator board (option) can output the dot frequency signal with the fixed frequency and power and
also the fixed power, and set the frequency sweep signal in the frequency band.