Hi,
i think i need to shame myself ...
I did some tests with the fluke 179 and my old 73.
i got some new leads today and some 0.1% resistors for test purpose.
i checked the Input resistance of the fluke 179, no battery and the switch set to Ohm range, i got 3.6 MOhm.
next i checked some resistors with fluke 73. 25 , 100 , 46kOhm.
All are fine with fluke 73 (all auto range)
next i used the Fluke 179
with autorange i get 12.5 , 50 , 42kOhm for 25, 100, 46k
with manual range (MR) range/xxx i get with a 100 Ohm 0.1% and a 25 Ohm
O = Ohm
MR O/600 50 12.5
MR kO/6 0.1 0.026
MR kO/60 0.10 0.03
MR kO/600 0.1 0.0
did i miss some problems with fluke 179 and autorange settings?
i get the feeling if i set the manual range higher and higher the DMM gets more precise?
a 830kOhm reads with a half value, only in MR MO/600 i get 828kO?
caps are worse, the get different readings, new 1000uF are read with 2400uF and 220uF are read as 500uF.
diode seems to be fine?
any idea?