10-14-2010 10:43 AM
PXI 4130 current level has these ranges (among others):
a) 4mA to 200mA
b) 400uA to 20mA
First I want to source 50 mA (first current range).
Then I want to switch to 100uA (second current range) as quickly as possible.
I do not need the full accuracy available. Error on either current (+/-10% even) would be acceptible if it were repeatable.
Is it possible to get from (a) to (b) without disconnect/reconnect or stair-stepping the current and range to an overlapping value?
10-14-2010 10:44 AM
PS LabWin CVI
10-17-2010 11:16 AM
While in the running state, you can edit the source configuration dynamically using any VI, function, property or attribute listed in the following tables.
-Ciao 😉
10-18-2010 10:18 AM
Thanks, but that does not help.
While it is true that you can edit the source configuration dynamically with those functions, I do not see how you can use them to change source current between ranges without disabling or stair-stepping.
Try 1:
Source current 1 (OK)
Source current 2 (ERROR: new current not in the old current range)
Try 2:
Source current 1 (OK)
Adjust current range (ERROR: new current range does not contain the current still being applied)
What I don't want:
Source current 1 (OK)
Disable output (OK)
Adjust current range (OK)
Source current 2 (OK)
Ensable output (OK)
Or:
Source current 1 (OK)
Source a middle current that works for both ranges (OK)
Adjust current range (OK)
Source current 2 (OK)
I think Im SOL.