06-28-2018 06:31 AM
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?
Solved! Go to Solution.
06-28-2018 06:38 AM
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?
06-28-2018 06:43 AM
It`s the programmable electrometer from Keithley.
Hope you can find your hat now...
06-28-2018 06:56 AM
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....
06-28-2018 07:10 AM
Sorry I forgot the number.
MODEL 6512 Programmable electrometer from Keithley.
06-28-2018 07:44 AM
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