This scope has been built around 1965. The vertical bandwidth is 33 MHz, which is an impressive performance for the time it was built. It has a delayed timebase with several trigger modes.
Unfortunately, my 545B has a problem. When it is switched on for about 40 minutes, the HV power converter collapses. I have delved into this and after much testing, the only part that I have left to blame is the HV transformer. You can see it at the lower right corner of the photograph of the HV subassembly. My diagnosis was confirmed by people on the Tek forum on Yahoo Groups.
I have used this scope sparingly for a number of years. I always had to keep the sessions short because of the HV problem. Its noise and heat production helped to keep sessions short. I recently acquired a better and more compact scope, so now my 545B is just a piece of antique. But as it is so large and my hobby shack is so small, I'd gladly leave it to a responsible foster fasther. In 2012 I sold it to a person who collected Tek scopes.
Copyright © 2000 - 2003 by Onno's E-page published 2000-10-22, last updated 2003-05-18