National Instruments BridgeVIEW 用户手册

Chapter 11

Loops and Charts

© National Instruments Corporation

11-5

Front Panel

1.

Open a new front panel by selecting File»New.

2.

Place a Vertical Switch (Controls»Boolean) on the front panel. 
Label the switch 

Enable

.

3.

Use the Labeling tool to create free labels for 

ON

 and 

OFF

. Select the 

Labeling tool, and type in the label text. With the Color tool, shown at 
left, make the border of the free label transparent by selecting the T 
in the bottom left corner of the Color palette.

4.

Place a waveform chart (Controls»Graph) on the front panel. 
Label the chart 

Random Signal

. The chart displays random data 

in real time.

Note

Make sure that you select a waveform chart and not a waveform graph. In the 
Graph palette, the waveform chart appears closest to the left side.

5.

Pop up on the chart and choose Show»Palette, and Show»Legend to 
hide the palette and legend. The digital display shows the latest value. 
Then pop up on the chart and choose Show»Digital Display and 
Show»Scroll Bar.

6.

Rescale the chart from 

0.0

 to 

1.0

. Use the Labeling tool to replace the 

HI limit of 

10.0

 with 

1.0

. 

7.

Place a knob (Controls»Numeric) on the front panel. Label the knob 

Loop Delay (sec)

. This knob controls the timing of the While 

Loop. Pop up on the knob and deselect Show»Digital Display to hide 
the digital display.