SC11 Oscilloscope

The oscilloscope program is useful for initial investigation of magnetic fields during trouble shooting of electron microscope imaging problems. Examples of oscilloscope screen displays in 4 and 8 channel mode are shown below.

The oscilloscope has a bandwidth of 20kHz on its shorter time ranges. The A input is DC coupled. There are common controls for the time base and the vertical axis ranges. There are independent controls for the auxiliary channel ranges and the vertical position of each channel. The RMS and Pk-Pk values of the waveforms are measured and displayed numerically.

Icons on the top toolbar are used to control operation. These include “pause”, “one-shot”, “reset DC sensors” and “zero position”. The “lock position” icon activates AC coupling that varies with the time base. The effect is to stabilise the vertical position of the traces, which is useful with an AC sensor that is being moved frequently during searches for magnetic field sources.