LabVIEW

cancel
Showing results for 
Search instead for 
Did you mean: 

Analog Output Electrometer

Solved!
Go to solution
Highlighted

Hello,

 

I am working with an electrometer which  can resolve currents as low as 0.1fA

and measure as high as 20mA in 11 ranges.

With the analog output of the device (0V - 2V) i go to an analog input of the NI 6009. 

The output gives an analog output signal for each range seperatly.

(For example: 1.67 V can be 16.7 mA but also 16.7 nA)

 

How can I know in LabView in which range I am?

 

Thanks!

 

 

0 Kudos
Message 1 of 6
(725 Views)
Highlighted

Wait a second while I put on my magic clairvoiyant hat......

 

Oh darn, where did I put it.  Sorry, Can't help much further without it.

 

Maybe a model number of your electrometer might help while I continue looking for my magic hat?

0 Kudos
Message 2 of 6
(722 Views)
Highlighted

It`s the programmable electrometer from Keithley.

Hope you can find your hat now...

 

Thanks!

0 Kudos
Message 3 of 6
(720 Views)
Highlighted

Haven't found my hat yet, but I haven't found THE electrometer from Keithley either, I've found SOME Electrometers, but It looks like I still need my hat to find out which one of them you are using....

0 Kudos
Message 4 of 6
(706 Views)
Highlighted

Sorry I forgot the number.

MODEL 6512 Programmable electrometer from Keithley.

0 Kudos
Message 5 of 6
(702 Views)
Highlighted
Solution
Accepted by topic author Andutschi

I think you have one of two options:

1) Use the IEEE-488 interface to read out the value instead

2) Fix the meter to a single signal range to allow a 1:1 assignment of the 2V output to a measurement value

0 Kudos
Message 6 of 6
(696 Views)