How do I Perform Time Domain Reflectometry (TDR) Analysis Using NI Products?Hardware: Modular Instruments>>High-Speed Digitizers (Scopes)
Problem: I am attempting to put together a system that is a specialized form of a TDR (Time Domain Reflectometry) to detect chafed wires. This could involve data acquisition, digital signal processing (DSP), etc. How do I set-up my system to do this using NI products? Solution: A TDR measurement is done by generating a very fast, clean voltage step signal that is monitored by a high-bandwidth digitizer. A National Instruments high-speed digitizer board combined with signal processing techniques are the basic tools necessary to perform a TDR analysis. Additionally, Hyperlabs, Inc. is a company dedicated to the design of Ultrafast Sampler/TDR Instruments using National Instruments LabVIEW and digitizer boards (see related link below). For more information on TDR, the NI Developer Zone has a few excellent resources to help you set-up your application. Two of these resources include a LabVIEW 7.0 example program that uses an NI PXI-5122 and an NI PXI-5404 to create a TDR, and a tutorial on Applying Limit Masks to Time-Domain Reflectometry (TDR) Measurements (see related links below). Related Links: Hyperlabs, Inc. Developer Zone Example: Time-Domain Reflectometer (TDR) Developer Zone Tutorial: Applying Limit Masks to Time-Domain Reflectometry (TDR) Measurements Attachments:
Report Date: 05/15/2002 Last Updated: 07/26/2007 Document ID: 2LEFE10A |
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