#hp9816 — Public Fediverse posts

I still find the #HP9816 useful today, to control #GPIB instruments. I wrote two programs, one to control the Bruel&Kjaer 2034 audio spectrum analyzer to do third-of-octave analysis and another one to do various measurements with a #HP4277A LCZ meter. If I need to further process data, I download them on a modern computer using a RS232 cable I built. I transferred and published the HPBASIC source of the third of octave software on Github: https://github.com/DarwinNE/BK2034_GPIB/tree/master/HPBASIC

The #HP9816 came with a spectacular keyboard the #HP98203C, nicknamed "Nimitz", because of its enormous size. It's a very nice mechanical #keyboard, very solidly built and confortable to use. I like the rotary encoder, proficiently exploited by the #HPBASIC while editing a program.

Another thing I found in the #birdsite archives is how I cleaned and repaired a magnificent #HP9816 (aka HP9000/216) workstation. It's a very nice machine, based on the 68k processor, that can run HPBASIC and can be connected to external disk drives and peripherals via #GPIB. I had to clean it, but it came out quite well. #retrocomputing #electronics #HPBASIC #GPIB

Here is another picture of the whole set #HP9816, #HP7475A, hidden an #HP9122 and an #HP9134, the Bruël & Kjær 2034 and the #HP4277A LCZ meter.

Here is another picture of the whole set #HP9816, #HP7475A, hidden an #HP9122 and an #HP9134, the Bruël & Kjær 2034 and the #HP4277A LCZ meter.

Here is another picture of the whole set #HP9816, #HP7475A, hidden an #HP9122 and an #HP9134, the Bruël & Kjær 2034 and the #HP4277A LCZ meter.

Here is another picture of the whole set #HP9816, #HP7475A, hidden an #HP9122 and an #HP9134, the Bruël & Kjær 2034 and the #HP4277A LCZ meter.

Here is another picture of the whole set #HP9816, #HP7475A, hidden an #HP9122 and an #HP9134, the Bruël & Kjær 2034 and the #HP4277A LCZ meter.

The first plot of the #HP7475A after the #repair went very smoothly. Here is controlled by the #HP9816, plotting the impedance vs. frequency of a 4µF 400V polypropylene #capacitor (that shows a nice resonance at 300 kHz). https://www.youtube.com/watch?v=UvrfeoOsdLM

The first plot of the #HP7475A after the #repair went very smoothly. Here is controlled by the #HP9816, plotting the impedance vs. frequency of a 4µF 400V polypropylene #capacitor (that shows a nice resonance at 300 kHz). https://www.youtube.com/watch?v=UvrfeoOsdLM

The first plot of the #HP7475A after the #repair went very smoothly. Here is controlled by the #HP9816, plotting the impedance vs. frequency of a 4µF 400V polypropylene #capacitor (that shows a nice resonance at 300 kHz). https://www.youtube.com/watch?v=UvrfeoOsdLM

The first plot of the #HP7475A after the #repair went very smoothly. Here is controlled by the #HP9816, plotting the impedance vs. frequency of a 4µF 400V polypropylene #capacitor (that shows a nice resonance at 300 kHz). https://www.youtube.com/watch?v=UvrfeoOsdLM

The first plot of the #HP7475A after the #repair went very smoothly. Here is controlled by the #HP9816, plotting the impedance vs. frequency of a 4µF 400V polypropylene #capacitor (that shows a nice resonance at 300 kHz). https://www.youtube.com/watch?v=UvrfeoOsdLM