... .built-in freqyency counter 3.improted CRT MCH Analog Oscilloscope, V-552A 50MHz frequency meter oscilloscope, dual channel/dual tracesSpecifications: specificationV-552ABandwidth50MHzCRT6 ... ×10CH1 ALT Magnification×10Accuracy±3%Triggering systemTrigger modeNORM, AUTO, TV-V, TV-HInput impedance1MΩX-Y mode operationX-Y phase difference ...