Can I Use Remote Sense with the SCXI-1520 Configured for Quarter-Bridge Measurements? Hardware: SCC>>Modules
Problem: I am using the SCXI-1520 to perform quarter-bridge strain gage measurements. Since I have long leads connecting the strain gages to the SCXI-1520, I would like to use remote sense to eliminate error introduced by lead resistance. I have referred to Figure 2-8 of the SCXI-1520 User Manual and Specifications, which shows how to use remote sense with full-bridge measurements. However, it is unclear to me how this information applies to quarter-bride configurations. Is it possible to use remote sense using a quarter-bridge configuration, and if so, what connections do I need to make? Solution: You can use remote sense with a quarter-bridge configuration. To do this, simply connect the RS+ input of the SCXI-1520 to the P+ input. The RS- line is connected to P- internally through a 1 kOhm resistor. Related Links: KnowledgeBase 399FFBMV: Remote Sense Inputs on the SCXI-1520 and PXI-4220 Product Manuals: SCXI-1520 User Manual and Specifications (September 2005) Products and Services: NI SCXI-1520 Attachments:
Report Date: 02/28/2008 Last Updated: 03/03/2008 Document ID: 4IRDEL9S |
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