Barbouri's Electronics Projects
Restoring vintage electronics along with designing and building new circuits. One eye looking into the past, the other looking into the future.
I finally came across a hard to find HP 5306A Multimeter/Counter paired with the HP 5300B Display module. It is an interesting module as it converts resistance and DC/AC voltage to a frequency that it then displays on the 5300B display, along with a frequency capability of 40 Hz to 10 MHz.
I have had my used Keithley 2015 THD multimeter for just over six years now, and have finally decided to perform some maintenance on it. I purchased it as a fully tested and working unit back in 2016. After it arrived, I did a visual check of internal components and a good cleaning of the exterior.
As mentioned in a previous post on the Hewlett Packard 34702A Multimeter module, I have been looking for a 34740A display module to pair with it. I was lucky to find a module that was in a good cosmetic condition and untested for a reasonable price.
When I purchased my HP 34750A Display module, it came with a somewhat beat-up 34702A Multimeter module. I was mainly interested in the display module to pair up with my existing HP 34703A module, but this is also an interesting module worthy of further exploration.
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Cleaning up and photographing a Hewlett Packard 34703A DCV/DCA/Ω Meter plugin section of a 3470 measurement system.
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