https://youtu.be/Par6rZX5u9YThe DS100 has a nominal analog bandwidth of 50M and a nominal maximum sampling rate of 250M. The HARDWARE uses MXT2088 overclocking to 125M, and then double interleave to achieve this sampling rate.
MCU uses GD32F450VET6, overclocking 25% to 250M, and uses internal 128kB SRAM to achieve 128K point storage depth. For digital storage oscilloscope, storage depth is as important as bandwidth and sampling rate. From the test results, in addition to a few small bugs in the low-frequency rolling mode, the overall performance is still good, basically play the level of hardware. The firmware is still under development. The math channel and FFT will be added later, and the existing bugs in the firmware will be fixed. Maybe the device can become a reliable testing tool in the future.