QK5040 40MHZ 2-CHANNEL ANALOG OSCILLOSCOPE         QK5040(40MHz): $248.00 Specifications: Two measurement input channels, one external trig channel.  l         Voltage division: 5V to 5mV, X5. l         Time division: 0.2s to 0.2 us/DIV, X10 expansion. l        Trig mode: auto, norm and TV. l         Trig source: input signal, line and external. l         Trig on rising or falling edge. l         Coupling: AC/DC/GND. l         Two probes and manual included. l         One-year warranty. l         110V power supply. Specifications QK5040 (40MHz) Vertical Deflection Sensitivity and Accuracy 5mV-20V/div, 3% 1mV-1V/div, 5% (X5 times, CH1 only) In 12 calibrated steps of 1:2:5 sequence Band-width DC(AC10Hz)-40Mhz Rise Time 10ns Input Coupling AC,GND,DC Input Impedance 1M ohm/30pF Maximum Input Voltage 400V (DC+AC peak) Vertical Mode CH1,CH2,DUAL(CHOP,ALT),ADD,CH2 CH1 Signal Output 25mV/div, 50 Ω, 20Hz-10MHz(-3dB) Horizontal Deflection Time Base 0.2 uS-0.2S/div, 19 steps of 1:2:5 sequence Sweep Magnification 10 times (Max sweep rate 20nS/div) Accuracy 3%,  5% at 10X times Trigger Mode Auto, Norm, TV-V, TV-H Trigger Source VERT(dual, alt), CH1, Ext, Line Trigger Coupling AC,DC Trigger Slope Rising, Falling edges External Trigger Input Impedance 1M Ω Sensitivity 20Hz-2MHz:  0.5 div TV Signal: 1 div X-Y Operation Input X axis: CH1 Y axis: CH2 Bandwidth X axis:  DC-500KHz(-3dB) Phase Difference < 3 degree Reference Clock 1KHz  0.5Vp-p rectangular wave Others Power Supply AC110V, 10% Power Consumption 45W Dimension 316x132x410(mm)