Author Topic: Keithley 2010 possible problems, error codes and schematic  (Read 726 times)

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Offline charlyd

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Keithley 2010 possible problems, error codes and schematic
« on: February 04, 2019, 08:22:17 pm »
hello i bought a keithley 2010 and i am looking for info to fully test and know what possible problems i have to cover to get the unit fully operational.
I found a Schematic from a Keithley 2000 and was wandering if there is something like a schematic for the Keithley 2010 model. I found the service manual with partlist and board layout but no schematic.

can somebody help me out with more info please..

 

Offline coromonadalix

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Re: Keithley 2010 possible problems, error codes and schematic
« Reply #1 on: February 04, 2019, 09:45:10 pm »
I think someone here or on the web  did a partial reverse schematic (s)

I never saw a full model 2010 schematic
 


Offline charlyd

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Re: Keithley 2010 possible problems, error codes and schematic
« Reply #3 on: February 17, 2019, 11:30:13 am »
does anybody know?  is this K2010 DMM ( and maybe other Keithley in the series  ) Always that nervous in reading out?
« Last Edit: February 17, 2019, 11:35:10 am by charlyd »
 

Online Echo88

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Re: Keithley 2010 possible problems, error codes and schematic
« Reply #4 on: February 17, 2019, 08:16:00 pm »
What do you mean with "nervous in reading out"?
 

Offline charlyd

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Re: Keithley 2010 possible problems, error codes and schematic
« Reply #5 on: February 17, 2019, 10:31:11 pm »
the steps is in MED so i would assume even to the right 4 digit you can read a number but-> NO the right 4 digits are so fast that they show every segment so like 8888...
 

Offline picburner

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Re: Keithley 2010 possible problems, error codes and schematic
« Reply #6 on: February 18, 2019, 10:28:09 am »
The instrument, like many others in this category, on the lower ranges (100mV - 10V) has an input impedance >10Gohms.
If you leave the inputs connected to nothing it is normal that the last digits move continuously, the instrument captures any disturbance.
If you try to connect it to a stable source you will see that the reading will be equally stable.
 

Online Kleinstein

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Re: Keithley 2010 possible problems, error codes and schematic
« Reply #7 on: February 18, 2019, 05:16:34 pm »
The meters can choose different speeds. So the user can choose between slow accurate readings and fast, but more noisy readings. This can go up to a point of some 1000 updates per seconds and thus to fast for the eye.  In some instruments the setting can survive a power down.

The preferred speed for manual readings is more like 1-5 updates per second ( e.g. 10-50 PLC mode). Than the reading should be reasonable stable on most ranges. The lowest voltage range may still show a little more noise.
 


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