I worked at HP when these scopes first came out. We were all very excited to see HP’s revolutionary new digital scope. But I remember most of us were rather disappointed in the implementation. The membrane front panel keys didn’t provide enough tactile feedback, and the user interface didn’t seem very intuitive. Many of us preferred the knobs and switches of the old analog scopes. Overall, it’s still a great scope. I’m glad you could get it working again. Thanks for showing us this important piece of test equipment history.

@TeardownOZ2CPU

Ай бұрын

you are right i missed a little click from all feature select buttons, but lucky they all works and i see a response right away.. can you confirm the bug i found ? is that normal ? in 2ch mode ?

@nezbrun872

Ай бұрын

"Many of us preferred the knobs and switches of the old analog scopes" Still do! There's a move over to removing knobs and buttons now with touch screens. I don't like it! I had an example of the 1980B for a while about ten years ago, I bought it more out of curiosity than anything else, and because it was financially unattainable for a young engineer like me back in the 80s. As I've noted elsewhere, it's very noisy and drifts a fair bit. It's amazing technology for its time though.

@garyramsey4275

Ай бұрын

@@TeardownOZ2CPU it doesn’t seem normal to me, but I don’t remember. I haven’t seen one of these in about 40 years!

150W... scopes has come a long way. Really an interresting scope. When playing with triggering on the block of keys on the right it seems it is divided into two sections, You only used the keys to the left not at all the keys to the right. It doesn't say channel 1 and 2 but maybe it is one set for each channel. Now it is my turn to say "I don't know". Have a nice sunny and warm saturday here in Denmark and thanks for the view.

I have two of these scopes. Considering when this model was designed it has many of the features of a modern scope. While the user interface is a bit different to a modern scope, once you get used to how it works, it is logical. In the video at 9:40, the leaked capacitor here is common from my experience. This capacitor and the other one on the left side of the custom chip in both my units were bad. The corrosion from one capacitor was so bad that it had completely disconnected one of it's own lead wires. At 16:05 like you I was surprised that the battery is still good after 40 years, the voltage was in spec and no leakage inside the battery box. The channel 3 / 4 plugin also has one of these batteries which was good as well. The date codes on the batteries I have are 1983. At 16:18 you mentioned the heatsink, but you should have removed it for a look inside. Most if not all of the pass transistors for the six or seven regulators are located within the heatsink! So, if you ever have a blown pass transistor that heatsink is where you will find it.

This one is one my hot list.

Fedt skop! Når man lige kender betjeningen, virker det sikkert logisk.

@TeardownOZ2CPU

Ай бұрын

after only one night of play, the user interface became fast and easy to use, so it is far from that bad, i first had in my mind it could be,

Nice! Here's a video on my fully loaded example: kzread.info/dash/bejne/gJadyZZuns6rhM4.htmlsi=lKzGFiX4cFhoJDhi I used to drool over these in the 80s. I used it for a while in the lab but in the end it was really more of a lab ornament or museum exhibit when compared to today's technology. Downsides: sounds like a rocket, and drifts like crazy!

@TeardownOZ2CPU

Ай бұрын

wow you got the super nice 4ch version.. envy.. :-) really good video you made, it explain most of the stuff i struggled with the first hr :-) i sort of refused to read the manual, do you still have it ? can you re create the bug i mention ? or is yours perfect in all 4 ch ? your video only show one channel in use, my issue is with 2 ch in use at the same time.

@nezbrun872

Ай бұрын

@@TeardownOZ2CPU Yes it is (or was!) fine in four channels. I donated it when I moved house, along with a bunch of other stuff I'd accumulated but wasn't really using. Unusual for me as I'm a bit of a hoarder!

@TeardownOZ2CPU

Ай бұрын

@@nezbrun872 Thanks a lot, maybe i dig deeper about ch to ch mixing issue one day.. I dont feel like a hoarder, since I got only 20 scopes stocked at the moment :-) i think the limit is much higher ?

its like a fold for me!!! please send to me bro :D