GW Instek MSO-2102EA 100 MHz, 2-Ch. Digital Storage Oscilloscope
100 MHz bandwidth
Equipped with a 16-Channel Logic Analyzer and a dual channel 25 MHz arbitrary waveform generator
Real time sample rate for each channel is 1GSa/s
Free Frequency Response Analyzer Software (Download from manufacture website only)
Maximum 10M memory depth and VPO waveform display technology
Waveform update rate up to 120,000 wfms/s
8" WVGA TFT LCD screen display
Maximum 1M FFT provides higher frequency domain resolution measurements
High Pass, Low Pass and Band Pass Filter Functions
29,000 segmented memory sections and waveform search function
I2C/SPI/UART/CAN/LIN serial bus trigger and decoding functions
Data log function is able to track signal changes up to 100 hours
Network storage function
Under what circumstances should oscilloscope consider the sampling rate?
The bandwidth is dependent on the object under test. You want the minimum sampling interval (the inverse of the sampling rate) to capture the signal details you need, provided the bandwidth is satisfied. There are some empirical formulas about sampling rate in the industry, but basically they are all based on oscilloscope bandwidth, in practical application, it is best not to use oscilloscope to measure the same frequency signal. When selecting the type, the bandwidth of the oscilloscope should be more than 3 times that of the measured sinusoidal signal, and the sampling rate should be 4 to 5 times that of the bandwidth, which is actually 12 to 15 times that of the signal.For other waveforms, ensure that the sampling rate is sufficient to capture signal details. If you are using an oscilloscope, you can verify that the sampling rate is sufficient by stopping the waveform, amplifying the waveform, and if there is any change in the waveform (such as some amplitude), the sampling rate is insufficient, otherwise it will be ok. Point displays can also be used to analyze the adequacy of the sampling rate.
What are the different voltage measurements for different oscilloscope probes?
It is recommended to use the original probe for better impedance matching. If different voltage probes are used, the measurement value will sometimes be larger and sometimes smaller, because the bandwidth of the probe will be very different, the bandwidth itself and flatness will be different, and the length of the ground wire will also have some small differences. Assuming, of course, that the decay is the same.