The oscilloscope is a very widely used electronic measurement instrument.It can transform the invisible electrical signal into visible images, which is convenient for people to study the changes in various electrical phenomena.The oscilloscope uses a narrow, high -speed electron beam, and hit the screen with fluorescent substances, which can produce small light points (this is the working principle of traditional simulation oscilloscope).
Oscilloscope brand
The oscilloscope divided into figures and analog simulation oscilloscope is based on Jiangsu Green, Suzhou Guwei, and Shanghai is newly built as the mainstream.Green and cost -effective, in every province, is responsible for repair.The price of solid latitude is high, and the quality is also good, but unfortunately it is more troublesome after sale.Shanghai is a new factory, and now it is basically limited to surrounding sales.Antai does not produce analog oscilloscope, I have been to Antaixin manufacturer.Digital oscilloscope: Puyuan, Lvyang, Youlid, Antaixin, are basically possible. Green Yang Puyuans price is relatively high, and the quality is slightly better than the latter two.The letter cannot be captured automatically.
Oscilloscope price
TEKTRONIX handheld oscilloscope THS3014-TK4 channel 100MHz ￥ 38000.00 series: 2000 series processing customization: is type: digital oscilloscope weight: 5 model: THS3014-TK Ivan ET521A handheld oscilloscopeUniversal Watch Brand: Ivan Vision Wave Model: ET521A Measurement voltage range: AC voltage, DC voltage measurement current range: AC Electric Fluke125 F125 Handheld Said Wave Industry Sompeicters ￥ 10130.00 Type: Handheld Flake Watch Brand: Fluke/Fuluke Model: F125 Channel Number: 2 Bandwidth: 40
The role of the oscilloscope
1. You can measure the voltage amplitude of DC signals and AC signals 2. You can measure the cycle of the exchange signal, and use this to convert the frequency of the communication signal.3. The waveforms that can be displayed can be displayed.4. Signal measurement can be performed with two channels.5. You can display the waveforms of two signals on the screen at the same time, that is, dual -traces measurement.This effect can measure the difference between the two signals and the difference between the shape between the waveforms.
Oscilloscope principle
The oscilloscope uses a narrow, high -speed electron beam to hit a small light spot on the screen with fluorescent substances.Under the action of the measured signal, the electron beam is like a pen tip of a pen, which can depict the changing curve of the instantaneous value of the measured signal on the screen.Use the oscilloscope to observe the waveform curve that changes the amplitude of various signals over time, and it can also use it to test various electricity, such as voltage, current, frequency, phase difference, amplitude amplitude, and so on.
How to use the oscilloscope
When the oscilloscope is used for a long time before or for a long time, it is necessary to perform a simple inspection of whether it can work at a time and the adjustment of the stability of the scan circuit and the DC balance balance of the vertical amplifier circuit.When a quantitative test of the oscilloscope is performed by voltage and time, it is necessary to perform a calibration of vertical lane gain and horizontal scanning speed.Select the Y-axis coupling method: According to the frequency of the measured signal, select the Y-axis input coupling method to select the "AC-Di-DC" switch at AC or DC.The attenuation probes should be divided by attenuation multiple; when the DC file is taken in the coupling mode, the superposition DC voltage value should be considered), and the Y axis sensitivity selects the V/DIV switch (or the Y -axis attenuation switch) at the appropriate gear level.If the voltage value does not need to be read in actual use, the Y -axis sensitivity fine -tuning (or Y -axis gain) knob can be appropriately adjusted to make the high waveform required on the screen.Select triggering (or synchronization) signal source and polarity: usually the trigger (or synchronization) signal polarity switch is placed in "+" or "-" files.Select the scanning speed: According to the approximate value of the measured signal cycle (or frequency), the X -axis scanning speed T/DIV (or scanning range) is switched and switched to the appropriate gear level.If you do not need to read the test time value in actual use, you can appropriately adjust the speed of the speed T/DIV fine -tuning (or scanning micro -adjustment) knob to make the waveform of the cycle required for the test on the screen.If you need to observe the edge part of the signal, the T/DIV switch should be placed at the fastest speed scan gear.Enter the measured signal: After the test signal is attenuated by the probe (or the input impedance is reduced by the same axis cable, but the input impedance at this time is reduced and the input capacitance is increased), and the oscilloscope is input through the Y -axis input terminal.

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