Jeremy,
I would tend to believe the reading on the 2000 ohm scale.
Look at the display in the 200 ohm scale and see if it shows a "+" to
the left - If so, that indicates overrange and you should switch to a
higher range.
I would also believe that the 20k and 200k scales are showing you
resistance in kilo ohms.
The voltage used for resistance measurements may change as you switch
scales.
In other words, it sounds like no short on the 12v power rail, but do
check the instructions for your meter so you know what the display is
telling you.
Inexpensive meters are normally fairly accurate for voltage readings,
but not necessarily for resistance.
73,
Don W3FPR
On 2/13/2014 1:55 PM, JeremyJones wrote:
Yes it is a digital multimeter, but I only paid about $10 for it.
What resistance should I be seeing. I have noticed some drastic variations
as I change the scale on my meter. The 200 ohm scale gives a reading of 91
ohms
2000 ohms scale reads 1500
20K scale reads 3.7
200k scale reads 10.7
What other symptoms might I look for to check for an issue in the power
rail.
I'm not sure if setting the scale to within the expected range will provide
a useful reading or not. I think I'll borrow on of the Fluke meters from
work this weekend.
--
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