350 MHz Digital Oscilloscope Features
Models and Key Specifications
DS/MSO4000 Series Rigol Digital Oscilloscope Specs PDF
Digital Oscilloscope DetailTips: The bandwidth of a digital oscilloscopeBandwidth is one of the most important indicators of oscilloscope. The bandwidth of the analog oscilloscope is a fixed value, while the bandwidth of the digital oscilloscope has both analog bandwidth and digital real-time bandwidth. The highest bandwidth that a digital oscilloscope can achieve with repetitive signals using sequential sampling or random sampling techniques is the digital real-time bandwidth of the oscilloscope. The digital real-time bandwidth is related to the highest digitization frequency and waveform reconstruction technology factor K, generally not directly given as an indicator. From the definition of the two kinds of bandwidth, it can be seen that the analog bandwidth is only suitable for the measurement of repeated periodic signals, while the digital real-time bandwidth is also suitable for the measurement of repeated signals and single signals.
The manufacturer claims that the oscilloscope's bandwidth can reach a number of megabytes, which actually refers to the analog bandwidth. The digital real-time bandwidth is lower than this value. For example, RIGOL DS4052 offered from ATO has a bandwidth of 500MHz. It actually means that its analog bandwidth is 500MHz, and the highest real-time bandwidth of digital data can only reach 400MHz far below the analog bandwidth. Therefore, when measuring a single signal, be sure to refer to the digital real-time bandwidth of the digital oscilloscope, otherwise it will give the measurement an unexpected error.