National Instruments Module SCXI-1503 User Manual

Also see for Module SCXI-1503: CALIBRATION PROCEDURE

Contents

National Instruments Module SCXI-1503 User Manual Manual pdf 47 page image

Chapter 5 Using the SCXI-1503SCXI-1503 User Manual 5-4 ni.comtime. For continuous acquisition, you must use a while loop around theacquisition components even if you configured the task for continuousacquisition using MAX or the DAQ Assistant. For continuous and bufferedacquisitions, you can set the acquisition rate and the number of samples toread in the DAQ Assistant or programmatically in your application. Bydefault, the clock settings are automatically set by an internal clock basedon the requested sample rate. You also can select advanced features such asclock settings that specify an external clock source, internal routing of theclock source, or select the active edge of the clock signal.Configuring Channel PropertiesAll ADEs used to configure the SCXI-1503 access an underlying set ofNI-DAQmx properties. Table 5-1 shows some of these properties. You canuse Table 5-1 to determine what kind of properties you need to set toconfigure the module for your application. For a complete list ofNI-DAQmx properties, refer to your ADE help file.Note You cannot adjust some properties while a task is running. For these properties, youmust stop the task, make the adjustment, and re-start the application. Tables 5-1through 5-3 assume all properties are configured before the task is started.Table 5-1. NI-DAQmx Voltage Measurement PropertiesProperty Short Name DescriptionDAQAssistantAccessibleAnalog Input»MaximumValueAI.Max Specifies the maximum valueyou expect to measure. TheSCXI-1503 gain and E/MSeries DAQ device range arecomputed automatically fromthis value.YesAnalog Input»MinimumValueAI.Min Specifies the minimum valueyou expect to measure. TheSCXI-1503 gain and E/MSeries DAQ device range arecomputed automatically fromthis value.Yes