Before any instrument can be used normally, it must be tested. Of course, the spectrum analyzer is no exception. Friends who often deal with the analyzer know how to prepare for testing? The experts of Instrument World World Network below will tell you how to prepare for the test.

1. Restrictive protection: Specifies the highest input RF level and the highest voltage value causing permanent damage: DC 25V, AC peak-to-peak 100V.

2. Warm up: The test must wait until OVERCOLD disappears.

3. Self-education: Self-study for three months or important measurements.

4. System Measurement Configuration: The configuration is to input some parameters of the measurement before measurement, and to save one parameter input for each measurement.

Content: Test items, signal input method (frequency or channel), display unit, system, noise measurement bandwidth and sampling point, CTB, CSO frequency, test line strobe, etc.

Configuration steps: Press the MODE key - CABLE TVANALYZER soft key - Setup soft key to enter the setting state.

Details tuneconfig tuning configuration: including frequency, channel, system, level units. Analyzerinput input configuration: whether to add a preamplifier. Beatssetup beat frequency, CTB, CSO frequency points (frequency offset CTBFRQoffset, CSOFRQoffset). GATINGYESNO gated test line. C/Nsetup C/N ratio setting: frequency point (frequency offset C/NFRQoffset), bandwidth.

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At present, there are mainly two types of pure electric vehicles and hybrid electric vehicles in the market. Pure electric vehicles are completely powered by electricity and do not generate any exhaust emissions, thus having the lowest pollution. Hybrid electric vehicles can be driven by both fuel and electricity, and the assistance of electricity can reduce fuel consumption and exhaust emissions. Compared to the two, pure electric vehicles are more environmentally friendly and can better adapt to use in specific environments.

With the advancement of technology and people's pursuit of environmental protection and low-carbon modes of transportation, electric vehicles will become the mainstream means of transportation in the future. More and more car manufacturers are beginning to invest in the research and production of electric vehicles, continuously improving battery technology and range, and improving the performance and user experience of electric vehicles.

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