The ZUS6000 series high-precision intelligent application oscilloscope adopts a 12 bit high-speed ADC, achieving a maximum measurement bandwidth of 1GHz. It is equipped with power analysis, intelligent hardware timing analysis, automotive bus analysis, Ethernet eye diagram, CAN eye diagram and other functions. The innovative X-Key function and custom G key can solve more industry testing applications, making the instrument more intelligent.
1. Working principle of oscilloscope:
There is a high-precision oscillation circuit (crystal oscillator circuit) inside the oscilloscope, which amplifies and shapes the instantaneous value from the measured signal to generate a sine waveform and outputs it to the input terminal.
2. Working process of oscilloscope:
When the input DC voltage reaches a certain threshold, the trigger amplifier enters a saturation state. At this time, the voltage amplitude at the input terminal no longer changes with time (i.e., cut-off state). Therefore, a voltage dividing resistor needs to be used to reduce the excessive DC voltage. Restricted within a certain range.
When the frequency of the input sine wave exceeds a certain threshold, the amplitude of the sine wave generated when the trigger amplifier is in a saturated state will drop sharply or even reach zero (that is, a cut-off state).
If the frequency of the input alternating current is a multiple of a certain threshold, no response will occur.
3. Application scope of oscilloscope:
It is mainly used to measure various electrical parameters such as voltage, current, etc.; it can also be used to measure non-electrical parameters such as power, frequency, phase, etc. In addition, it can also be used as precision calibration tools and spectrum analysis instruments, etc.
4. Main parameters of the oscilloscope:
bandwidth:
This is the core parameter of the oscilloscope and determines its performance level. Bandwidth is the upper limit of the signal frequency that an oscilloscope can handle, and determines the maximum frequency that the oscilloscope can accurately measure. If the bandwidth is too low, the oscilloscope will not be able to resolve high-frequency changes, amplitudes will be distorted, edges will slow down, and detail will be lost. Generally speaking, the bandwidth of the oscilloscope should be 5 times the frequency of the signal being measured to avoid distortion of the amplitude and waveform.
Sampling Rate:
Oscilloscopes need to sample waveforms when measuring signals. The sampling rate determines how much waveform detail the oscilloscope can capture. The higher the sampling rate, the richer the waveform details captured by the oscilloscope and the less information is lost. However, sample rate is also a factor that affects memory usage and processing speed.
Storage depth:
The storage depth indicates the number of signal points that the oscilloscope can continuously record. The larger the storage depth, the less likely the waveform is to be distorted, but it also requires larger memory and affects the CPU load.
Number of channels:
The higher the number of channels, the more signals can be observed and analyzed simultaneously. The number of channels chosen depends on the application requirements.
Waveform refresh rate:
The waveform refresh rate indicates the number of waveforms that the oscilloscope can refresh per second. A high refresh rate helps capture low-probability abnormal signals, but it also affects storage depth and processing speed.