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The smarter way to check electrical connection contacts (VIDEO)

Description When it's time to check electrical connections, don't risk damaged components and unreliable test results with improvised equipment. Learn how properly sized test tools can take frustration out of the equation during electrical diagnostics. Related...

Real Vampire Bites? Technicians, Watch Out!

While investigating an intermittent headlight this week, I caught a glimpse of something that raised my hackles and had me reaching for my flashlight in a hurry. Lurking in the dark, behind the headlight housing, was that … a vampire tap? With a skinny black wire...

The Future of the Trade Needs Us

Take a step back for a moment and look at how far this industry has come. Modern technicians routinely diagnose and repair vehicles that are more advanced than anything the industry has seen before. Today's repair pros navigate electrical systems, software,...

DSO Settings – ASE Practice Question (VIDEO)

by | Jul 28, 2026

Description

Technician A says that when using a lab scope, most signals can be captured using the 20/20 Rule – that is, by setting up the scope to capture a range of 0-20v on the vertical scale and setting the time base to 20ms per division. Technician B says that a DSO does not capture a signal in real time – rather, it samples the voltage input and then plots that data on the screen.

Who is correct?
A) Technician A
B) Technician B
C) Both Technician A and B
D) Neither Technician A or B

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