I just bought an Extech 570 Multimeter. The test probes act very funny. On the Ohms mode, touching the probe tips together make the reading jump all over the place. Depending on where I touch the tips, gives me a different response. Some readings are close to zero, other spots are just jumpy. It appears the coating on the tips may not be very uniform in their resistance.
I checked a set of fluke meter probes and they seem better, but still not rock solid. Same with an old RadioShack meter, better but not rock solid.
I can touch the Extech tips together and just move them back and forth along the lengths and I get different response. Very annoying.
I purchased a second set of probes and they also show this same type of behavior. Not as bad as the Extech ones, but yeah, annoying.
I was taking readings of Caps and resistors, and depending on how I held the probes on the leads, gave me different readings, some being jumpy.
Has anyone had this same experience?
Rich