- #Daq assistant labview 2013 code
- #Daq assistant labview 2013 plus
- #Daq assistant labview 2013 series
- #Daq assistant labview 2013 simulator
The quickest way to get up and running to take a measurement is using the DAQ Assistant express VI.
#Daq assistant labview 2013 code
Now it's time to finally start writing LabVIEW Code beginning here with a blank VI. The OC data has the option of run or store and use.- I've spent a lot of time talking so far, about the DAQ hardware and related concepts. VDD is stepped through a range for a given VG1. The OC measurement is a simple loop, as shown below.
#Daq assistant labview 2013 plus
As below, the voltage range is plus and minus. In the VDS loop, a negative voltage (VDD) is applied but the negative input voltage (VDS) is made absolute, such at the same loop execution occurs as with the PMOS. All voltages are converted to positive for simulation purposes. Shown here is a minus gate voltage application. The measurements could be made with a positive voltage configuration, but this requires that difference of voltages be applied, which gives up lot in precision. Special considerations for the PMOS, with negative voltages, are required.
#Daq assistant labview 2013 simulator
The simulator is Level 3, and thus, has a relatively small drain-current range. Icon X1 N is the data array applied to the simulator, below. As in the Diagram below, the above data are placed in the initial frame of execution.įor example, the UO loop uses XM1, as shown here. The data array is in Global variable XM1.Īn NMOS parameter structure for our projects is here. The “false” state uses Local Variables to preserve the data, as shown 2nd below. This preserves the data, such that it can be accessed anytime after the measurement. The measurement system is contained in X1data.vi, with Block below. This is ameliorated with using a LabVIEW case structure to select an appropriate voltmeter for a given range and could consist of multiples of 2, 5, and 10 and for varies orders of magnitude. The resolution is suspect at the lower end. Voltmeter two (drain current, VRM) is reading over 2 orders. The measurement uses 100 samples, which are averaged, and set for uAmps.Īn alternative loop is a While Loop, which halts at a given set max drain current.Ī wide-range example is here. The damping factor is the “1” just outside and below the loop above. The lower plot has x-axis index, and the case is very over-damped, for effect, as is the poor selection for the initial value. The VOloop Front Panel shows the progress towards establishing the goal VDS. This is not a critical voltage, as MOSFET drain current is insensitive to it. This voltmeter reads 10 samples and these are averaged as shown. It contains output voltage ao0 (configuration below) and voltmeter VO, which reads the drain voltage (below). This sets the drain voltage at an assigned value for each VG1.
#Daq assistant labview 2013 series
VG1 (in Icon form) is assigned the series of voltage, VG1, starting with VG1=2.4 and incremented up in steps of 50mV, in the For Loop. The case is named accordingly, such as the case for a possible ai1.įor building the X1 VI, this is repeated for input ai2 and outputs (2).
In the next step, 0 to 10 V is selected, for the NMOS (all positive), as -10 t0 +10 has half the resolution. The circuit from LTspice.įrom the Block Diagram, Functions is opened, followed by Input/DAQ Assistant.ĭAQ Assistant is opened and Analog Input is selected.Ĭhannel ai0 (zero) is selected, and this will be repeated for ai2. The DAQ is an E series, and the system is Windows XP, LabVIEW 7.0, with NI-DAQmx 7.2. The measurements consist of a transfer function with constant VDS and an output characteristic.
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