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Convert Fluke 287 to 289

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Towlerar:
Just a curiosity of mine. I have a Fluke 287 and was wondering how difficult it would be to convert to the 289. The firmware is the same for both and the electronics are nearly identical. There was a short-lived meter called a Fluke 189II/AN that was the predecessor to the existing 287/289 meters. According to the attached picture from the service manual for that early meter, there is a set of model selector resistor dividers. Anyone know what effect these have?

BeBuLamar:
Even if you can make the electronic identical it still not the 289. The 289 dial has 2 extra positions for low Z and Low Ohm. I think the best conversion is to sell the 287 on Ebay and buy a 289 on Ebay.

coromonadalix:
the same was apparently done and working for a 187 to 189 conversion,  thread here .....   to my knowledge, never been done for a 287 to 289 ... 

rvalente:

--- Quote from: Towlerar on October 19, 2021, 11:42:21 pm ---Just a curiosity of mine. I have a Fluke 287 and was wondering how difficult it would be to convert to the 289. The firmware is the same for both and the electronics are nearly identical. There was a short-lived meter called a Fluke 189II/AN that was the predecessor to the existing 287/289 meters. According to the attached picture from the service manual for that early meter, there is a set of model selector resistor dividers. Anyone know what effect these have?

--- End quote ---

Hello,

Could you share this service manual?

Towlerar:

--- Quote from: rvalente on October 20, 2021, 03:43:50 pm ---
--- Quote from: Towlerar on October 19, 2021, 11:42:21 pm ---Just a curiosity of mine. I have a Fluke 287 and was wondering how difficult it would be to convert to the 289. The firmware is the same for both and the electronics are nearly identical. There was a short-lived meter called a Fluke 189II/AN that was the predecessor to the existing 287/289 meters. According to the attached picture from the service manual for that early meter, there is a set of model selector resistor dividers. Anyone know what effect these have?

--- End quote ---

Hello,

Could you share this service manual?

--- End quote ---

https://github.com/Towlerar/Fluke-189II-AN-Service-Manual

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