National Instruments Image Acqusition Software NI-IMAQdx Manual De Usuario

© National Instruments Corporation

If you have LabVIEW RT, you can use IMAQ RT Video Out, located at 
Vision and Motion»Vision Utilities»IMAQ RT, to display an image on 
the monitor connected to your RT device. Use IMAQ Video Out Display 
Mode, located at Vision and Motion»Vision Utilities»IMAQ RT, to 
configure the monitor for display. Figure 4-8 illustrates configuring the 
monitor and displaying an image acquired with IMAQdx Snap.

Figure 4-8.  Displaying an Image Using RT Video Out

 

The IMAQ RT Video Out VI is available only on RT devices with Intel i815 or i845 

video chipsets. These devices include NI CVS-1450 Series devices, PXI-817x controllers, 
and PXI-818x controllers.

To modify camera attributes in LabVIEW, use the IMAQdx Property 
Node. Every camera attribute has two parameters: Attribute Name and 
Attribute Value.

•

Attribute Name—Specify the attribute name with the attribute 
property node. The attribute name is a string constant. The attribute 
name contains several keywords separated by a double colon 
namespace marker. The namespace marker separates different levels in 
the attribute tree as described by the driver and the camera. 
Use the fully qualified attribute name, for example 
AcquisitionAttributes::Timeout, or the short version of the attribute 
name, for example Timeout, when specifying the attribute name.

•

Attribute Value—Enter a value type for the attribute. The value type 
must be compatible with the attribute type. Refer to Table 3-2 for a list 
of attribute value types. Use the Range property nodes to find the valid 
range for the current camera.