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1. Prior to testing, make sure that...
   1. the LHe level probe is securely fastened in the LHe reservoir
   2. the motor is connected to the computer and the Response VI has direct communication with it (this can be determined by checking to see if the "Motor Enabled" and "Motor Connected" bools are activated).
      
   
   
2. When testing with LHe, it is not necessary to log data as far as the valve position and the timestamp are concerned. This is up to personal preference, but is always a good idea to collect as much data as possible. 
   
   
3. The same thing applies as far as calibrating the default (zero) position in this situation... when you initialize the valve position, it is important that the valve be completely closed, and that zero is set as the initial position. If this is not done successfully then there is a risk of the valve overturning and breaking. Likewise, the constant velocity should not be too fast in order to prevent the valve from slipping while the program is running.
   
   
4. sajbFinally, once the Response VI is running, you should go check and see that the motor is actively running and that the valve is not slipping (the motor is in sync with the valve and they don't become out of sync during a sharp turn in the other direction - this can cause problems for your valve and may result in something breaking if you don't address the issue).

Retrieving Data from Text Files

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