![]() Use the vertical position knob to position the beam in the first cell from the bottom.If you do not have this switch, you can simply touch the lead to the same ground point or connect the probes to each other. If the oscilloscope has a Signal Type switch, set it to the middle position to ground the lead.If the oscilloscope does not have a dedicated ground terminal, connect the probe clip to any open (unpainted) point on the case, such as a screw head. Connect the ground probe of the test leads to the special ground contact on the body of the instrument.On some oscilloscope samples, this switch may be called “Signal decoupling”. Set the signal type switch to GND (ground) if the oscilloscope has such a position.If the oscilloscope has two channels (i.e. Connect the leads with metal probes to the input of the instrument.Set the beam position selection knobs (up/down and right/left) to the “Auto” position if the existing oscilloscope does not support Auto Image Adjustment, set them so that you can see the beam on the screen.Select internal synchronization and the signal type is AC (no DC component). Set the sync control knob to the “Auto” position (or in the middle if the oscilloscope that does not have an automatic sync source selection function). ![]() This voltage is also close to the optimum value for the initial calibration of the instrument, considering that we are mostly dealing with low voltage DC circuits. This value is the middle ground for calibrating the instrument. If the oscilloscope screen has a CRT display, you should allow time for the instrument to warm up the tube until a dot or line appears on the screen. Don’t forget that every oscilloscope can be different from the depicted sample, and the controls of different models can have different names. The following describes the steps you need to take to calibrate the oscilloscope. 4 Final Words Calibrating an Oscilloscope Step-by-Step Guide ![]()
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