militoronto.blogg.se - Cathode ray oscilloscope ppt

However, with a properly grounded oscilloscope, the current travels through the grounding path to earth ground rather than through you to earth ground.

If a high voltage contacts the case of an ungrounded oscilloscope, any part of the case, including knobs that appear insulated, it can give you a shock.

Grounding the oscilloscope is necessary for safety.

Properly grounding the oscilloscope protects you from a hazardous shock and protects your circuits from damage.

Proper grounding is an important step when setting up to take measurements.

The frequency is measured in Hertz (Hz) and equals the number of times the signal repeats itself in one second Waveform shapes tell you a great deal about a signal Triggering Stabilizes a Repeating Waveform

You can tell how much of the signal is noise and whether the noise is changing with time.You can find out how much of a signal is direct current (DC) or alternating current (AC).You can tell if a malfunctioning component is distorting the signal.You can see the "moving parts" of a circuit represented by the signal.You can calculate the frequency of an oscillating signal.You can determine the time and voltage values of a signal.This simple graph can tell you many things about a signal: Vertical plates are attached to an external voltage, the signal you attach to the scope.Ĭathode Ray Tubes Variation in potential difference (voltage) placed on plates causes electron beam to bend different amounts. the horizontal (X) axis represents time.the vertical (Y) axis represents voltage.In most applications the graph shows how signals change over time:.It draws a graph of an electrical signal.The oscilloscope is basically a graph-displaying device