Adopt ARM Cortex-M3 processor (STM32 chip) and it runs faster than DSO138 and a good handle of data.
Used for secondary development on the basis of this kit, for example, it can be changed to Millivoltmeter, data loggers.
With Auto/Normal/Single trigger modes, easy to capture the moment waveform.
Available rising or falling edge trigger and with adjustable trigger level position and instructions.
Observable previous waveform before trigger(negative delay).