Re: My $25 "In Poor Shape" 3468A has arrived

Dave Miller · 2019-02-28T10:23:32-08:00

Thanks George, I am not used to such quality equipment. ;-) Dave -- 72 de Dave VE7HR

Dave Miller Member Profile All Messages By This Member #94770 Thanks George, I am not used to such quality equipment. ;-) Dave toggle quoted message Show quoted text On Thu, Feb 28, 2019 at 10:19 AM ghnatiuk@... <ghnatiuk@...> wrote: Dave, A non-zero reading on low volts DC and AC range with an open input to the meter means nothing other that you have pickup (coupling) into the meter from stray fields.? The input impedance of the meter in ACV is 1 Meg and a coupling capacitance from your mains wiring to the meter input of 2pF will create a voltage drop across the input of 0.1v.? ?On the 300mv and 3V? DC range the input impedance is on the order of 10^12 Ohms or higher.? ?Floating inputs will give all sorts of random readings. Random readings with the inputs floating is a non-issue. George -- 72 de Dave VE7HR

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