Handheld oscilloscope integrates the functions of digital storage oscilloscope, digital multimeter and digital frequency meter. It is battery-powered and graphical liquid crystal display. It is a new type of practical instrument in the field of electronic measurement.
Handheld oscilloscope integrates the functions of digital storage oscilloscope, digital multimeter and digital frequency meter. It is battery-powered and graphical liquid crystal display. It is a new type of practical instrument in the field of electronic measurement. Adopt embedded design technology, embed core components such as microcontroller, A / D converter, LCD controller into the system, and use the integrated design of embedded operating system, ASIC design technology, LCD graphic display technology and digital signal processing technology Embedded instrument system. The instrument is complete in function, small in size, light in weight, convenient to carry and operate, has extremely high technical content, strong practicality and huge market potential, and represents a development trend of contemporary electronic measuring instruments.
Among them, the signal conditioning module is used to condition the signal under test. This part is mostly composed of attenuation network, operational amplifier and control relay; the data acquisition module is mainly composed of high-speed ADC, FPGA and trigger circuit; processing system and human-computer interaction module It is composed of processor, memory, input and output structure, etc .; the display module mainly refers to the LCD screen, the current popular is true color LCD, most of the oscilloscopes use the resolution of 320 × 240; the power module is usually realized by the switching power supply IC Of course, the power conversion efficiency is required to be as high as possible. Generally, the key difference between a high sampling rate oscilloscope and a low sampling rate oscilloscope is the difference in the data acquisition module. The increase in the ADC sampling rate in the data acquisition module will inevitably bring about an increase in its power consumption, which also necessarily requires a power module The output power of the module increases, while the other modules are independent with respect to the sampling rate. The relative difference in power consumption is relatively small and will not change due to the increase in sampling rate.