Fluke Helios Plus 2287A, 1500 I/O Frontend, Teardown and Test

Teardown, cleaning and test of a Fluke Helios Plus 2287A Data Acquisition Frontend and 2181A Extender. The Frontend and extender features two Fluke 2280A-161 High Performance A/D Converter 2280A161 cards and nine 20-channel RTD/Resistance Scanner modules, for a total of …

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Yearly Battery Check – My 2021 New Year Resolution.

My 2021 New Year resolution is to do annual battery checks on all my battery powered instruments. I found batteries as old as 13 years over expiration date that had also started to leak, but much less defective batteries than …

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High Current Measurements – Isolation, Day 10

I go through my collection of current transformers. Regular ratio transformers, hall effect sensors, shunts, Pearson and Ion Physics current monitors and how to make a DIY high frequency current transformer.

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