... , color display 4.with USB interface MCH USB Oscilloscope, DS-2025CA Digital Oscilloscope, 25MHz freq. ,dual channelSpecifications: SpecificationsDS ... , delayAcquisition modesAuto, normal, singleTrigger sourcesCH1, CH2, Ext, Ext/5, Ext(50Ω)Horizontal accuracy±0.01%Vertical sensitivity2 mV/div ... subject to change without prior notice. 25Mhz DS-2025CA USB digital Oscilloscope dual channel 25MHz freq.,