Fixing and Testing the Tektronix 2445 Oscilloscope

TLDRIn this video, I attempt to diagnose and fix a faulty Tektronix 2445 oscilloscope that is not functioning properly. I explore the different channels and settings, analyze the waveform, and identify issues with attenuation and filtering. I also discuss potential causes for the problem and demonstrate how hitting the bottom of the scope affects the signal. Finally, I refer to the service manual to troubleshoot the scope and open it up for further examination.

Key insights

💡The Tektronix 2445 oscilloscope is a four-channel analog scope from the 90s or late 80s.

🔧Channel 1 of the oscilloscope has a problem with attenuation and is not displaying the waveform correctly.

🖥️The oscilloscope has a CRT display and can show up to four traces at once.

The oscilloscope has features like dual trace mode, zooming, and cursors for measurement.

🔍Troubleshooting the scope involves checking the voltage per division settings, coupling, and triggering.

Q&A

What is the potential cause of the attenuation and filtering issues?

The cause of these issues could be a faulty relay, solder joint, or physical problem in the scope's hardware.

Does hitting the bottom of the scope affect the signal?

Yes, hitting the bottom of the scope caused changes in the signal, indicating a potential physical problem.

Can the oscilloscope accurately measure different waveforms?

The oscilloscope can accurately measure various waveforms such as sine waves, square waves, and more.

Is the oscilloscope digital or analog?

The Tektronix 2445 oscilloscope is an analog scope with a CRT display.

Are there any limitations of the oscilloscope?

One limitation of the oscilloscope is the lack of digital storage capability, meaning waveforms cannot be frozen.

Timestamped Summary

00:00Introduction and overview of the faulty Tektronix 2445 oscilloscope.

02:39Exploration of the different channels and settings of the oscilloscope.

06:32Analysis of the attenuation and filtering issues on Channel 1.

10:14Demonstration of the effect of hitting the bottom of the scope on the signal.

10:55Reference to the service manual and discussion of potential causes and troubleshooting steps.

11:47Opening up the oscilloscope for further examination and repair.