Digital oscilloscope supports automatic measurements
A digital oscilloscope is a general test instrument. It is essentially a graphic display device, equivalent to a voltmeter or multimeter with a graphic display. It can intuitively display the waveform of a signal changing with time on the screen, and analyze the period and voltage of the waveform. , frequency and other parameters, it is widely used in various fields such as scientific research and production. It is the main test instrument for engineers to design, debug and repair products, and plays a decisive role in testing work.
The way a digital oscilloscope works is to convert the measured voltage into digital information through an analog converter (ADC). The digital oscilloscope captures a series of samples of the waveform and stores the samples until the storage limit is determined to determine whether the accumulated samples can depict the waveform. Then, the digital oscilloscope reconstructs the waveform.
Digital storage oscilloscopes offer economical performance in a compact design. The TBS1000B Series oscilloscopes help you get more done in less time with a variety of standard features, including USB connectivity, 34 automatic measurements, limit testing, data logging, frequency counters, trend graphs, and context-sensitive help menus. .
The hardware part of the digital oscilloscope system is a high-speed data acquisition circuit board. It can realize dual-channel data input, and the sampling frequency of each channel can reach 60Mbit/s. Functionally, the hardware system can be divided into: signal front-end amplification (FET input amplifier) and conditioning module (variable gain amplifier), high-speed analog-to-digital conversion module (ADC driver, ADC), FPGA logic control module, clock distribution, high-speed comparison processor, microcontroller control module (DSP), data communication module, LCD display, touch screen control, power and battery management and keyboard control.
After the input signal is converted by the preamplifier and gain-adjustable circuit, it becomes an input voltage that meets the requirements of the A/D converter. The digital signal after A/D conversion is buffered by the FIFO in the FPGA or acquisition memory, and then passes through the communication interface. It is transmitted to the computer for subsequent data processing, or the collected signals are directly controlled by the microcontroller to display on the LCD screen.
