Calibration with SignalExpress

[TM4_essais]

Hi,

We own a few Data acquisition system that each include a PXI-6229, two SCXI-1102 (one plugged to  a TBX-1303 for thermocouple reading and one modified with resistors to read 4 @ 20 mA transmitters) and a OM5 backplane for isolated thermocouple plugged in AO16 to AO31 of the PXI-6229 DAQ card.

We presently use VILogger Full on one station and the others have VILogger Lite. When we create a task we have to calibrate all the channels we need even if we did the same thing maybe two days earlier in an other task. It seems that we cannot calibrate the system once or twice a year an apply this calibration to all the task that may be executed after that calbration.

Does SignalExpress allow the user to calibrate his system and then use that calibration on all the tasks it may generate after it?

Also, can we reuse a task an modify it without changing the first task which we cannot do with VILogger?

Thanks

[samantham]

Hello,

You are correct you cannot create calibration information for one NI-DAQmx Task and then use it in another NI-DAQmx Task.  You can however use the same NI-DAQmx Task (with set calibration information) in different VI Logger Task.  Each VI Logger Task would call upon the same task and thus only entering in calibration data once.  Inside of the VI Logger task you also have the option to edit the NI-DAQmx Task to change timing settings without having to re-enter calibration information again.  I would assume that after you create the first NI-DAQmx Task and enter in the calibration information … you would just continue using that NI-DAQmx Task to log data (even two days later).  Right clicking on a VI Logger Task allows you to create a duplicate VI Logger Task that will use the same NI-DAQmx Task.

Please explain further why you need to create a new NI-DAQmx Task after one has already been created.  Is it related to you having a few of the same systems?  Please clarify the application overview and setup.