Today I discovered one true inconvenience or issue ,
That it must be noted to FLUKE.At the Ohms range 0-600 Ohm ( manual range )
If you activate the High Resolution ( 20.000 counts ),
If you try to measure any resistor that is more than 199 Ohm ,
The DMM shows in the screen OL and the bar graph goes to full .
Exactly the same indication, as it does when you do not perform any measurement at all in Ohms range .
This could easily fool you, and make you to believe, that you have at hand one bad resistor !!!
Maybe is just only me, who believes that this is an inconvenience or issue,
But what I would call as logical , would be, that at the end of the road of the 20.000 counts in the manual modes,
It should described with any other symbols than the OL .
I can hardly call as Bonus, that at the named 0- 600 Ohm range the DMM can read as max 650 Ohm at the normal resolution.
Another one called as inconvenience or issue,
Could be one detail that I found today ,
By reading one Application Note ( PDF) of Fluke named as :
Low ohms measurements you can trust It describes how to make one quick test to ohms range , so to verify that your meter reads accurate Ohms.
The Fluke 87 has an internal 1K precision resistor.
Test your meter against this by connecting a test lead from the V-ohms jack to the
microA/A jack while the meter is in Ohms mode.
Don’t forget to zero out that test lead, first —simply put the lead between the
v-ohms and COM jacks and press the Relative button .http://www.myflukestore.com/crm_uploads/low_ohms_measurements_you_can_trust.pdfOk , so far so good , but if I zero out the leads , the relative mode will stop the auto ranging .
If I zero out with auto ranging at 0-600 Ohms, there is no way to measure 1K , I will get OL !!
The same OL that I get with disconnected leads !!
As long the 87V and 28II, are totally identical, they share the same issues in Ohms range.
And so, yes FLUKE you have to do something about that,
And update – rewrite your documents too.