Calibrating the Tektronix 2225

The shop is really freaking cold right now.  February and early March was brutal and snowy, and I keep the shop thermostat set just a few degrees above freezing.  I do this to minimize propane use, while also preventing the plumbing from freezing.

Tektronix 2225 troubleshooting update

Update:  I set the noisy Tektronix 2225 oscilloscope aside for a while.

Here it is with both channels grounded, showing plenty of garbage on the screen. Both traces should be completely flat.

Tektronix 2225 checkout and inspection

One of the things that an oscilloscope can do is "freeze" a signal, so that you can look it over and see what the device you are testing is doing.    You can spot normal and abnormal signal patterns if you can visualize the signal.

Tektronix Oscilloscope Score!

I'm a big fan of Craigslist.  Every once in a great while, you come across a screaming deal.  Today was my day for that.