Using the Oscilloscope Probes

Why don’t we just hook red and black test leads onto the oscilloscope, just like we do with a multimeter?  Noise.  The oscilloscope has very sensitive amplifiers and if you are measuring small signals, the wire test leads will pick up electrical interference.

Vocabulary for this video segment:  Frequency, Attenuation, AC, DC, Shielding, Passive, Active, Amplification, Coaxial Cable,  Impedance, Reactance, Capacitive Reactance, Inductive Reactance, Input Compensation, Ratios, Dominate, High Frequencies, Low Frequencies, Flat Frequency Response, Commercial 10X, Probe, Factor, Typical 10X Probe, Tektronix, Removable Spring Clips, Variations, Compensation Box, Adjustment, Ground Lead, Tek-Probe Interface, Sensing Ring, BNC, Scope, Attached, Scale, mV/Div, Switch, Matched to… , Calibrator Signal, Square Wave, Low Frequency Components, Harmonics, High Order, Fast Rise Time Edges, Non-Metallic, Probe Body, Rising Edge, Falling Edge, Low Pass Filtering, High Pass Filtering, Low Frequency Response, High Frequency Response, Vertical Amp, Antenna, Injecting Noise, Adding Inductance into Signal Path, Feet or Foot (3 feet is 1 Metre), Audio Circuits, Loading,

14 Minutes very good overview with circuits.

Second Video (maybe better to see first)  4 Minutes

Have you watched EEVBlog episode #453? I think he does a good job describing these probes. He actually shows using a straight coax versus a X1 probe. He even gives into some Tecktronics history you may find interesting.  30 Minutes

 


June 2017
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