What Is a Virtual Channel and How Do I Create One? Primary Software: Driver Software>>NI-DAQPrimary Software Version: 6.5.0 Primary Software Fixed Version: N/A Secondary Software:
Problem: What is a virtual channel and how do I create one? Solution: Virtual channels allow you to use your existing data acquisition programs without modification for scaling or conversion. For example, a data acquisition (DAQ) board connected to a thermocouple will acquire data as a voltage. However, this voltage actually corresponds to a real-world temperature value, which would normally require you to add a separate conversion routine to your existing program. You can use your existing data acquisition program to measure temperature using the virtual channels with no modification to the program. You create virtual channels by using the DAQ Channel Wizard (see the related links, below). NI-DAQ 6.5 (or higher) uses the Measurement & Automation Explorer (MAX) to create virtual channels. NI-DAQ 6.1 (or earlier) uses the NI-DAQ Configuration Utility instead of MAX. The functionality is the same in the NI-DAQ Configuration Utility, but the interface has a different look and feel. In the latest version of MAX you can right click on Data Neighborhood and select Create New.  You can then select if you want to create an NI-DAQmx Global Virtual Channel or a Traditional NI-DAQ Global Virtual Channel.  Note: Not all DAQ hardware supports the use of virtual channels, so refer to KnowledgeBase 1A4DD2Z1 (linked below) for that information, as well as device-specific information regarding virtual channels. Related Links: LabVIEW Support: DAQ Channel Wizard KnowledgeBase 1A4DD2Z1: What DAQ Hardware Is Supported by the DAQ Channel Wizard? KnowledgeBase 10OA65BB: DAQ Channel Wizard FAQ Product Manuals: DAQ Quick Start Guide Attachments:
Report Date: 10/27/2000 Last Updated: 11/26/2007 Document ID: 22QD2THE |
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