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Yes, they're neat little boxes, basically a 3466A DMM with input multiplexing and printer.

The HP 4276A measures the AC impedance of DC power sources, up to +- 40V DC. Just set the switch on the back to 'External'. Works great for regulated power supplies, too. Just make sure to lift it's e

Good find. I ran into a similar situation when bringing my 3577A back to life several years ago. There's a board that generates several different synchronous clocks, one of them was OOT, but the error

The 5423A system has now started on its way to Dave's museum. Or should I say, toward...