... USB interface MCH USB Oscilloscope, DS-2025CA Digital Oscilloscope, 25MHz freq. ,dual channelSpecifications: SpecificationsDS-2025CAChannels2+Ext.TriggerBandwidth25MHzRising time13.8nsTime base5ns ... Auto measurementsVpp, Vamp, Vrms, Vmin, Vtop,Vbase,Vbase,Vavg,Freq,Period,Rise timeFall time,+width,-width,overshoot,preshoot,+duty,-duty ... 25Mhz DS-2025CA USB digital Oscilloscope dual channel 25MHz freq.,