Buy Used Oscilloscope -

If buying locally, perform these checks to verify functionality:

Connect a probe to every channel and attach it to the built-in probe compensation output (usually a small metal tab on the front). You should see a clean, steady square wave. buy used oscilloscope

Buying a used oscilloscope can save you hundreds of dollars, but it requires careful testing to ensure you aren't inheriting someone else's "blown front end" or calibration nightmare. If buying locally, perform these checks to verify

Most modern digital oscilloscopes (DSOs) run a self-test on startup; ensure it passes without error codes. If buying locally

Professional refurbished units from manufacturers like Keysight are calibrated and often come with a warranty. Essential Pre-Purchase Tests