BoscoLab

BoscoLab, 20 days ago to random German

Another HP 3325B synthesizer / function generator for repair. Two problems number one: the power switch only turns off the fan. The device itself stays on. Problem two: Fail 021 amplitude too high when calibrating.

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BoscoLab, 21 days ago to random German

The HP logo plotted as a signal wave on the HP 7475A plotter.

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BoscoLab, 28 days ago to random German

good morning from the lab

BoscoLab, 1 month ago to random German

I have an HP 9872B plotter in my collection that is in very bad condition. There is a short circuit in the power supply somewhere. The foil on the paper surface has come off. I noticed that the HP 9872B plotter has a card slot. Does anyone know what it is for?

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BoscoLab, 3 months ago to random German

XPB Number Station on 15953 KHz

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BoscoLab, 3 months ago to random German

@TechTangents do you have a source for the ballpoint pen? Mine is broken and has no ball. Do you also have interesting graphics software? :)

BoscoLab, 7 months ago to random German

The HP 5060-0329 encoder is more complicated than I thought.

Does anyone have schematics for this?

#hp6034a #hppowersupply

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BoscoLab, 7 months ago to random German

Open Circuits

A fantastic book by @tubetime

Thank you Eric for this masterpiece!

BoscoLab, 7 months ago to random German

https://youtu.be/soTtQuVBsxE

I have connected the HP 4952A to the worldwide telex network. I also set up a local connection to the teleprinter.

Check out the video on YouTube with nice teleprinter sound! :)

#hp #hp4952a #hp4951c #telex #teleprinter #itelex

BoscoLab, 7 months ago to random German

An attempt to read the RTTY messages decoded by the R&S GA 082 with the HP 4951C protocol analyzer. The RTTY signal is from the German weather service.

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BoscoLab, 9 months ago to random German

After successfully repairing the SPARCstation 4, boot Solaris 8 from cdrom. I still have to fix the NVRAM. #sunmicrosystems #suntember #solais #sparcstation

BoscoLab, 9 months ago to random German

Massive shipping damage to my Sun SPARCstation 4 ☹️ and the monitor too. 😭 #sunmicrosystems #suntember #sparcstation

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BoscoLab, 9 months ago to random German

Sun Fire X4540 for ZFS 😎 #suntember #sunmicrosystems

BoscoLab, 10 months ago to random German

Try the HP 8757C Scalar Network Analyzer and HP 8350B Sweep Oscillator with an LP filter 400/470 MHz. HP 11664A Detector and Mini Circuits ZFSC-2-2 Power Splitter.

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BoscoLab, 10 months ago to random German

Using graphics on HP9000/310

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BoscoLab, 10 months ago to random German

HP 9000 310

Suddenly the HP hard disk in the HP 9153C repaired itself and an initialization was started. I am trying to install the HP Basic 5.1 on the hard drive.

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BoscoLab, 1 year ago to random German

Another HP E3611A power supply for repair. At the smallest load, it goes into the constant current error.
I suspect it is a Motorola 2N4036 that is not working properly.

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