Author Topic: Beckman 3020 resistance readings off  (Read 103 times)

0 Members and 1 Guest are viewing this topic.

Offline TimeBandit

  • Contributor
  • Posts: 13
  • Country: us
Beckman 3020 resistance readings off
« on: October 06, 2019, 09:43:16 pm »
I have a Beckman 3020 DMM that's reading about 1 ohm high. I've tested different probes, cleaned the jacks with Deoxit, checked the precision resistors inside (they're within spec), and next plan to carry out the calibration procedure (feed 190mV DC and adjust the rheostat to match while set to the 200mV range). What else am I not thinking of?
 

Offline retiredcaps

  • Super Contributor
  • ***
  • Posts: 3334
  • Country: ca
Re: Beckman 3020 resistance readings off
« Reply #1 on: October 07, 2019, 01:10:08 am »
When you short your probes together, what do you get?

1 ohm high when measuring what?  1 ohm high when measuring a 10 ohm resistor?  1 ohm high when measuring a 100 ohm resistor?
 

Offline TimeBandit

  • Contributor
  • Posts: 13
  • Country: us
Re: Beckman 3020 resistance readings off
« Reply #2 on: October 07, 2019, 11:42:15 am »
It's behaving now, though I'm not sure why. I did notice that the negative battery wire had a bad solder connection to the double-sided board.  :-//
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf