| Products > Test Equipment |
| Some old school instruments showing how it's done (HP 3325A and Fluke 8506a) |
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| garrettm:
--- Quote from: joeqsmith on January 31, 2021, 03:57:00 pm ---If you like, I can take some decent pictures of this board to compare with yours and see if there are any differences. Perhaps the performance was improved to the point that Fluke would just upgrade them as part of their service. --- End quote --- I would love to see what your board looks like. Mine has 872572 Rev. D written in marker on the PCB--which strangely does not match the number on the label (881722). Maybe it was replaced at some point? Seems odd they wouldn't match. If I'm reading the part numbers correctly, my board has date codes from 1994! But that's military contracts for you, whether or not Fluke wanted to keep making these, Uncle Sam forced 'em to anyways. I wish I had a tripod to take the close ups and some way to correct for the chromatic dispersion or a better lens. My hands are not the steadiest things around, so there might be some slight blur to the zoomed in parts, particularly the resistor array. |
| garrettm:
Here are a few more photos. I tried taking close ups of the ceramic resistor array, but my hands weren't very compliant while trying illuminate the area and hold the camera at the same time. I added a couple of quick shots of the interior of the Thermal Converter, it also uses a bunch of custom Fluke ceramic resistor arrays. |
| joeqsmith:
--- Quote from: garrettm on February 01, 2021, 06:00:53 am --- --- Quote from: joeqsmith on January 31, 2021, 03:57:00 pm ---If you like, I can take some decent pictures of this board to compare with yours and see if there are any differences. Perhaps the performance was improved to the point that Fluke would just upgrade them as part of their service. --- End quote --- I would love to see what your board looks like. Mine has 872572 Rev. D written in marker on the PCB--which strangely does not match the number on the label (881722). Maybe it was replaced at some point? Seems odd they wouldn't match. If I'm reading the part numbers correctly, my board has date codes from 1994! But that's military contracts for you, whether or not Fluke wanted to keep making these, Uncle Sam forced 'em to anyways. --- End quote --- Wouldn't surprise me if the bare board, populated board, tested board, final assembly would all have different part numbers. As you can see, mine is also Rev D, written with a marker. Possibly 1995. The 316 test stamp may be a date code. |
| SilverSolder:
I guess we can safely assume that @joeqsmith's board is among the last ones made? - so unlikely that there are any revisions newer than Rev. D? It is really cool with a modular construction like this, they can keep improving and revising different parts over a long production run and still keep everything working together no matter how you swap stuff, pretty much. Of course, that kind of philosophy would be strictly forbidden nowadays... let's just launch facelifted models every year, nothing compatible with anything else! |
| joeqsmith:
A few closer pictures of the resistor network. I wanted to try and show the glass. The rest are looking through the glass. I wonder what just this one part cost as I assume that 735118 is a Fluke part number. |
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