Channel: w2aew

Category: Science & Technology

Tags: leveltektronixoscilloscopereadinggeneratorvoltageprobeamplitudescope10xcompensationtekw2aewcalibrationsignaloperation

Description: This video describes the top 5 reasons that you might think your oscilloscope voltage readings are wrong. These are the most common mistakes made by new users and professionals alike. They are: 1) Voltages are off by a factor of 10 - usually due to not accounting for 10x probe attenuation. See this video about 1x/10x probes: youtube.com/watch?v=SX4HGNWBe5M 2) Voltages off by a factor of 2 - usually due to using a signal generator that is expecting a 50 ohm load. See this video for more details: youtube.com/watch?v=tClE8s6RZdg 3) All voltage readings lower than they should be - usually caused by not putting the volts/div vernier into the Calibrated position. See this video on one reason that this control exists: youtube.com/watch?v=eRA1Mx506fw 4) High frequency voltage readings low - could be several reasons, but most often due to signal frequencies being too close to the scope/probe rated bandwidth. See these videos on scope bandwidth considerations: youtube.com/watch?v=oZ1Dv2dVGkU youtube.com/watch?v=hXbPnY7VIes youtube.com/watch?v=Ly5pmYopEfU 5) Probed voltage amplitudes are not right - most often caused by improper 10x probe compensation. See this video on the importance of probe compensation: youtube.com/watch?v=oxJQr4dKnys Video notes can be found here: qsl.net/w2aew/youtube/WhyScopeReadingWrong.pdf