Author Topic: Fluke 15/17 B+/Max slow settling on resistance function.  (Read 575 times)

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Offline mqsaharanTopic starter

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Fluke 15/17 B+/Max slow settling on resistance function.
« on: August 14, 2023, 12:41:31 pm »
Hi,
Has anybody tired of slow settling of resistance function on Fluke 15/17 B+/Max?
I just saw the following video on Youtube. I don't understand the language but from the title and what the guy was doing in the video it was obvious. From the comments I found out that he replaced the C7 capacitor with 1nF (C0G type I presume). Could someone who understands the language, please tell us what he is saying about the capacitor? Is he replaced the capacitor because the installed value was high or was it just unstable for its required function?
With a quick search on internet, I found from a site called Sprites Mods (https://spritesmods.com/?art=fluke15pluswifi), the chip used in these meters is FS98O24.
In the datasheet the C7 is installed at pin number 7 and 8 and these are ADC Pre-Filter Capacitor Connections. And the datasheet suggests a 27n capacitor there. From video it looks like 27nf is installed by the company.
The picture of 17B+ was taken from https://lygte-info.dk/review/DMMFluke%2017B%20UK.html



Thanks.

Edit: Tried to make some language corrections.
« Last Edit: August 15, 2023, 03:50:55 am by mqsaharan »
 


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