Fangrui Product Details The Quality Budget Oscilloscope: Compared With The Previous Mini Oscilloscope, This Upgraded Version Of The 154pro Mini Oscilloscope Has A Real -time Sampling Rate Of 40msa/s, The Bandwidth Is 18mhz, And The 500khz Signal Generator Frequency.154pro Is A Good Choice.if You Are Excluding The Old 8 -bit Computer Failure, The Frequency Band Is Very Important.it Matches The Frequency Level Of Retro Computers. Built -in Signal Generator: Various Waveforms With 3v Amplitude Such As Sine Waves, Fang Waves, Semi -waves, And Triangular Waves.you Can Move Or Zoom In The Waveform Of The Trigger Stop.the Frequency Is 0-500khz, The Duty Ratio Is 1-, And The Output Impedance Value Of The Internal Function Generator Is 150 Ohm.there Is A Buffer Amplifier In The Output Of The Generator. Full Trigger Mode And One -click Automatic: Small Oscilloscope Kit Is Equipped With 3 Triggers, Automatic/normal/single.support Waveform Parameter Settings, Such As Time Benchmark, Amplitude, Etc.support Waveform One -click Automa