Tag Archives: hp 140a

HP 1405A Plug-In Mystery: Which Is It?

I’m fixing up an HP 143A Wide-Screen Mainframe Oscilloscope, which has a very big selection of plug-ins to provide a variety of functions. The oscilloscope has symmetrical vertical and horizontal circuits, so it can be used as an X-Y amplifier … Continue reading

Posted in Electronics, Gadgets, Photos, Test Equipment, Vintage | Tagged , , , , , , , , , , | 13 Comments