MS Thesis R. Hager - Hawaii National Marine Renewable Energy ...

and minimum voltage range of the DAQ is -10/10 V and -0.2/0.2 V, respectively. Thus,the signal of the load capacity, 2.2 lbs., and a typical wave force of 0.2 lbs. fall into the rangeof the DAQ. Additionally, the DAQ has a minimum voltage range accuracy of 0.157mV.Therefore, the DAQ is able to read the signal accurately from a typical excitation force.5.4.3 SignalExpressSignalExpress, a data-logging software from National Instruments, is used in this work.SignalExpress projects are comprised of steps; which gather, process, analyze, generate, andstore signals. To add a step either: right-mouse click on the left panel, as seen in Figure 5.9;select Add Step>> Acquire Signal in the tool bar, as seen in Figure 5.10; or select theicon from the tool bar to generate a context menu. The initial step is to acquirethe signal from the NI 9205 DAQ. Select Acquire Signal>> DAQmx Acquire>> AnalogInput>> Voltage, as seen in Figure 5.9. Once a step has been added to the project it isindicated in the left panel, as seen in Figure 5.11.92