© Unknown. All rights reserved. . 2 Digital oscilloscope (cont.) "CH 1" BNC connector: input line is attached here (displayed as channel 1) "CH 2" BNC connector: a second input line can be connected here (displayed as channel 2) EXT TRIG: a line can be connected here that instructs the scope when to start (i.e. trigger) its display sweep. For example, an electronic stimulator can be used to trigger the display of the waveform evoked by that stimulator. "VOLTS/DIV" dial: (Volts per division) Determines how much display is used to display the input channel. For example, if the "VOLTS/DIV" is set at 1.0 V/div, then each of the vertical boxes (divisions) on the scope equals 1 volt. The current setting is shown at the bottom of your scope (see illustration). If you are using two input channels, be aware that each channel has its own volts per division setting. Voltage "SEC/DIV" dial: (Seconds per division). This is often refered to as the "Time base". The current setting determines how fast the "beam" sweeps from left to right. Thus, it determines how much time is dispalyed on one screen. For example, if the "SEC/DIV" is set at 1 ms (1 millisecond), then each of the horizontal boxes (divisions) on the screen displays 1 millisecond of data. Because there are 10 divisions across the entire display, the total display duration is 10 milliseconds. This is why oscilloscopes are great -- you could never see the voltage dynamics of such a short duration with your naked eye. Time current volts/div and time base are displayed here VOLTS/DIV © Unknown. All rights reserved. 2 Input line(s) connect here (CH1 CH2) External trigger Time base (SEC/DIV)

Digital Oscilloscope

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