Category Archives: Electronics

AD584JH chinese voltage reference board

I bought some time ago a cheap AD584JH voltage reference board from the usual online auction site. It is a couple of weeks that the board is powered on and measured by my HP3456A while the temperature of the room … Continue reading

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Solartron 7150 added to the stack

Now the trio of my 5.5 digits or better DMMs is working and logging which means I am out of IEEE 488 cables which means I ordered two more as there is a lot of my equipment that is really asking … Continue reading

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HP 3456A & HP 3457A

I am not dead yet, just very tired. This photo is just to show that something is happening on the DMM side of things. As soon as possible, I want to write about linux-gpib, DMM and logging. A.C.

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HP 5300A/5302A

This basic counter came with a lot of equipment I purchased some time ago. I didn’t need another counter but I wasn’t going to complain of getting another piece of test equipment. Anyway, when I turned it on it didn’t … Continue reading

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HP/Compaq 2510p: changed DC power connector

I rather like my HP/Compaq 2510p so I have been really displeased when the laptop suddendly powered off even if it was attached to its power supply. The fact that I recently bought a new battery for it only added … Continue reading

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Anritsu MS610A repair (faulty 6dB pad)

This repair is my first foray into the almost-microwave realm. So, what was wrong with this SA? I bought it unresponsive to the front keyboard commands. After cleaning the contacts the unit started to be responsive, but the pushbuttons were … Continue reading

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HP 6634A repair (blown filter capacitor) part 2

I finally remembered to order the three capacitors I needed for this repair in my last order and so I went ahead and did the repair. To reach the main board I didn’t exactly follow the service manual: after opening … Continue reading

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HP 6634A repair (blown filter capacitor) part 1

I was hoping to write a post about the calibration of my HP 6634A as the output voltage was a bit higher than what it should have been but as you can guess from the title that didn’t happen. Anyway, … Continue reading

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HP 5345A “repair”

As I wrote here I added this counter to my collection. However it didn’t work right and I was rather sure that I wouldn’t have time to fix it anytime soon. I was wrong. Yesterday I took a pause from what … Continue reading

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Another counter: HP 5345A

I didn’t really need another counter. Moreover I really, really didn’t need another broken counter to repair because I don’t have the time to repair it. However I could’t resist this one: it came with the HP10544A crystal oscillator and it … Continue reading

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