CHAPTER 1 : GETTING STARTED WITH LABVIEW

The purpose of this blog to summaries the entire steps to use the lab view.  Starting with install the labview.

Students may refer to this link. It will explain how to install LabVIEW Student Edition, along with toolkits and hardware drivers. This experience is tailored for this installer suite, but a similar experience exists for other software installations.

1.    Open the LabView software on your PC

2.    Opening a New VI from a Template

Open File and click New and click VI

Then Generate and Display and click OK

3.    Front Panel and Block Diagram

As shown as diagram below, it shows the front panel and block diagram:       

  

Next, on the Front Panel click the Run Button. Then the “Sine waves” will appear and click the Stop button to stop the running. :

.

4.    Adding a Control to the Front Panel

On front panel click View and then click Controls Palette

Next, click Express choose Numeric Controls and then click Knob. Drag the knob at the front panel left to the waveform graph.

Later choose Save As

5.    Changing a Signal Type

On the block diagram, students need to right click Simulate Signal and click the Properties choose the Signal Type click the Saw Tooth hit the button OK

For the block diagram, move the cursor over the down arrows at the bottom of the Simulate Signal Express VI click and drag the border of the Express VI to add two rows. When students release the border, the Amplitude input will appears as shown below:

6.    Wiring Objects on the Block Diagram

Students need move the cursor over the arrow on the Knob terminal. Next, the cursor becomes a wire spool. During the Wiring tool appears, click the arrow on the Knob terminal and choose the arrow on the Amplitude input of the Simulate Signal Express VI, to wire the two objects together.

Then choose File and click Save.

7.    Running a VI

Click the Front panel and choose run button and then move the cursor at the knob. The cursor will appear as hand or the Operating tool as shown at left. Use the Operating tool to change the value of a control.

8.    Modifying a Signal

Choose the Block diagram and then click the wire that connects the Simulate Signal Express VI to the Waveform Graph terminal and then click the delete key.

Click the Function pallete and choose the Express and click the Arithmetic & Comparison later drag to the block diagram between Simulate Signal Express VI and the Waveform Graph terminal.

Student need to click the Configure formula dialog and choose help

Students neeed to change the text in the Label column of the dialog box option that students read, from X1 to Sawtooth. When students click in the Formula text box at the top of the Configure Formula dialog box, the text changes to match the label students have entered.

Student need to entering *10 after Sawtooth in the Formula text box and click OK.

Students need to click output of the Simulate Signal Express VI, When the Wiring tool appears, click the arrow on the Sawtooth output and then click the arrow on the Sawtooth input of the Formula Express VI to combine the wire the two objects together.

Next, use the Wiring tool to wire the Result output of the Formula Express VI to the Waveform Graph terminal and click Save.

9.    Displaying Two Signals on a Graph

 In the block diagram, move the cursor over the arrow on the Sawtooth output of the Simulate Signal Express VI. Later, use the Wiring tool to wire the Sawtooth output to the Waveform

Graph terminal.

Then click File and choose Save.

Return to the front panel and then run the VI and turn the knob control. The graph plots the original sawtooth wave and the scaled sawtooth wave with 10 times the amplitude, as students specified in the Formula Express VI. The maximum value on the y-axis automatically scales as

Students turn the knob.

At knob 2 graph display original and scaled sawtooth wave within ten which is 20 as 2 x 10 = 20

Next, students need to click the STOP button to stop the VI.

10.  Customizing a Knob Control

Students need to right click the front panel knob and select Properties from the shortcut menu to display the Knob Properties dialog box. Click the Appearance tab to display the Appearance page. Later, in the Label section on the Appearance page, delete the label Knob

and enter Amplitude in the text box.

Students need to click the Scale tab. In the Scale Style section, place a checkmark in the Show color ramp checkbox. Then, the knob in the front panel window updates to reflect these changes.

Next, click the OK button to save the current configuration and close the Knob Properties dialog box. Later, Save the VI.

11.  Customizing a Waveform Graph

In the front panel window, move the cursor over the top of the plot legend on the waveform graph. Next, though the graph has two plots, the plot legend displays only one plot. During a double-headed arrow appears, shown in Figure 1-11, click and drag the border of the plot legend to add one item to the legend. Students need to release the mouse button, the second plot name appears.

Next, right-click the waveform graph and select Properties from the shortcut menu to display the Graph Properties dialog box.

On the Plots page, select Sawtooth from the top pull-down menu. In the Colors section, click the Line color box to display the color picker. Select a new line color.

Students need to select Sawtooth (Formula Result) from the top pull-down menu. Next, place a checkmark in the Do not use waveform names for plot names checkbox. This action lets students to edit the labels on the graph.

In the Name text box, delete the current label and change the name of this plot to Scaled Sawtooth.

Students need to click the OK button to save the current configuration and close the Graph Properties dialog box

Student need to reopen the Graph Properties dialog box and experiment with other properties of the graph. For instance, on the Scales page, try disabling automatic scaling and changing the minimum and maximum value of the y-axis.

Lastly, click the Cancel button to avoid applying any changes you made while experimenting. If student want to keep the changes student made, click the OK button.

Done for the chapter 1.