Use GPIP for measure six point by six DMM at the same time

First Question
I will use GPIB for measure six point by six DMM at the same time. I will record the data in every mins.Could it avaiable? Is this method not accuray?
I aslo wanna to run 3 labview programme at the same. time.Each programme is same and use GPIB to measure by 2 DMM and 2 Digital In .Could i do this?

The first question is easily handled by triggering all instruments at the same time and then querying each in turn for the measured value. You can use eaither a hardware or software trigger (i.e. the gpib GET command). For your second question, are these 3 LabVIEW programs started by a single main program? How you want to run them will make a difference but in any case, the programs will have to have some sort of synchronization mechanism if you want measurements to be taken at the same time or if independent, a blocking mechanism to prevent simultaneous reads and writes. More details on the second question would help.

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