Test Equipment Anonymous

Pins 1 and 2 no longer tied together. Same with Pins 3 and 4. A Dremel with a mini rasp bit was the tool to separate the traces. I also verified that the cabling does not swap side to side. https://imagizer.imageshack.com/v2/xq70/924/LCGJ3I.jpg Still to do: Verify orientation of the 5110 interface. ...

When I got back into the hobby 15 or so years ago DSO's were completely foreign to me. I had never seen nor used one. So once I got myself acclimated and current with the latest tech I decided to dip my feet in the shallow end of the pool and buy a low end model. I've learned to use it and I see the...

I've had a hard day of lusting after birds in the bedroom window, then lusting after squirrels in the lab window. Leave me alone.

Pat, you are correct. Just looked at mine and it's the same. Yes, they need to be separated.

What are these siamesed pads that you are referring to? I don't see any connected together although I have not verified that with an ohm meter. Or are some cables swapped side to side male to female? https://imagizer.imageshack.com/v2/xq70/922/pUPR6d.jpg Yes, I do have a TM series. This TM503. I was...

This is the interface in the 5110 (female connector). At first glance it appears that the JAMMA is going to need considerable rework to avoid magic smoke. What I need to determine right away is the interface on the 5110 numbered from the bottom up or top down? And then which is left side vs right si...

There are European Starlings (imported pest) and English Sparrows (another imported pest) nesting in and about our building which has got Harley's tail in knot. He is beside himself. If the screens weren't down I swear he'd jump out the window. :lol: Serves you right for importing our sparrows, :lo...

So doing Spring cleaning which involves an annual cleaning of the windows. So I pull out the shelving unit blocking the window to gain access. https://imagizer.imageshack.com/v2/xq70/922/U3OBed.jpg What do I find on the floor behind it? You get no clues. https://imagizer.imageshack.com/v2/xq70/922/0...

So it appears that the only real solution is the purchase a proper hp branded spectrum analyzer. I'll put it on my "wish" list.

So it's basically just eye candy?

My crusty old eyeballs are better TE.

I suppose this is much more meaningful?

OK gang, here it is. I have really no clue what it all means. Comments welcome. https://imagizer.imageshack.com/v2/xq70/923/pI9ECK.jpg You require a slower timebase setting on Siglent DSO’s when doing FFT. Experiment with 50 or more cycles on the display. If required I’ll pull out a DL when home in...

OK gang, here it is. I have really no clue what it all means. Comments welcome.

You guys kill me. Suggesting I go down all sorts of rabbit holes.

My Siglent SDS1052DL does have some basic FFT functions but I trust my crusty old eyeballs.

Calibration was a bit fiddly but finally fell into place. Will burn-in for at least 2 hours then this project is complete. Oh no it isn't! Not until the spectral purity of that sine wave is checked out on a spectrum analyzer! No gots a spectrum analyzer. My tired old eyeballs are good enough. :D

Calibration was a bit fiddly but finally fell into place. Will burn-in for at least 2 hours then this project is complete.

Displaying 1MHz Sine.

Re-cap of the main board. C11 is the huge axial 300uf/10V non-polarized capacitor on the output. I was unable to find an axial capacitor of that value and type but I did find a Panasonic radial 330uf/10V non-polarized . Look at the size difference. https://imagizer.imageshack.com/v2/xq70/924/gjN98y....

Cubdriver wrote: ↑Sat May 10, 2025 8:17 pmCat walk.jpeg

So true.

Finally got some time to change out the remaining capacitors. It was a real chore to get to them on the range switch but I was ultimately successful. Changed out C6, C7, C8, C12, C13, C14. So this was nothing to do with silver mica capacitors. It was other capacitors setting the ranges. Were they p...

Started re-cap of the PSU board which is attached to the rear panel.




And we have a date.

The oldest counter I have is this bad boy. Twas a present from nixiefreqq. And it works perfectly too.

I think shipping would be a tad expensive.

Today is frequency calibration. https://imagizer.imageshack.com/v2/xq70/924/TL57Q9.jpg The manual recommends something like this monster to set the frequency ranges. hp 523 or 524 series. We'll use something a little more modern. https://imagizer.imageshack.com/v2/xq70/924/Wf36eu.jpg Pulled the 2465...

bd139 wrote: ↑Wed May 07, 2025 9:11 pm

MED6753 wrote: ↑Wed May 07, 2025 9:04 pm I'd love to see why but the video is blocked here due to copyright.

Fuck copyright.

Fuck copyright indeed.

Enjoy https://cjsmith.uk/bunghola/flowers.mp4

Which one is you?

I'd love to see why but the video is blocked here due to copyright.

Fuck copyright.