IEEE P1451.4 is an emerging standard for adding plug and play capabilities to analog transducers. The underlying mechanism for plug and play identification is the standardization of a Transducer Electronic Data Sheet (TEDS). A TEDS contains the critical information needed by a device or measurement system to identify, characterize, interface, and properly use signals from an analog sensor. That information includes the sensor's model number, model ID, calibration constants, scaling constants, and more.
A TEDS is deployed for a sensor in one of two ways:
A TEDS can reside in embedded memory, typically an EEPROM, within the sensor. To download a TEDS from the sensor, you need TEDS-supported hardware such as the BNC-2096 or the SCXI-1314T. You can then download the TEDS in MAX to use in your application. Refer to the Measurement & Automation Explorer Help for NI-DAQmx for additional information on downloading and using TEDS.
A Virtual TEDS can exist as a separate file, downloadable from the internet. A Virtual TEDS extends the benefits of the standardized TEDS to legacy sensors and applications in which the embedded memory or EEPROM is not available. You can download Virtual TEDS from ni.com by typing in the sensor serial number. A Virtual TEDS does not require TEDS-supported hardware.