Interface Accessory for
Class 1 TEDS Sensors
NI BNC-2096
• Adds TEDS capability to NI 447x
devices and SCXI-153x modules
• Interfaces with up to 16 TEDS sensors
(Class 1 with IEPE analog)
• Software control direct from
Measurement & Automation Explorer
(MAX) and LabVIEW
™
TEDS Library
• Implements mode control
(analog/digital) required of
IEEE 1451.4 Class 1 sensors
• Digital communications and control
from NI 4021 switch controller or
data acquisition device
• Multidrop configuration – control two
or more units from a single control
device (E Series or NI 4021)
• 19 in. rack mountable
Operating Systems
• Windows 2000/NT/XP
Recommended Software
• LabVIEW
™
Measurement Services Software
• NI-DAQmx
Overview
The National Instruments BNC-2096 is a front-end Transducer
Electronic Data Sheet (TEDS) interface accessory for NI 447x devices
and SCXI-153x modules. The NI BNC-2096 interfaces directly with
IEEE 1451.4 sensors (smart TEDS sensors), which deliver improved
system configuration and diagnostics, reduced downtime, and better
sensor data management for customers. Using smart TEDS sensors,
you achieve easier setup, configuration, and maintenance of
computer-based measurement and automation systems. In addition,
you can cascade several BNC-2096 accessories for high-channel-
count applications.
Smart TEDS Sensors
An IEEE 1451.4 smart TEDS sensor consists of the analog
components and an embedded memory chip, which together provide
the mixed-mode interface for analog and digital signals. A smart
TEDS sensor identifies and describes itself – providing the
manufacturer, sensor model number, serial number, measurement
range, sensitivity, and calibration information. TEDS information
resides on a memory chip (EEPROM) within the sensor and is
accessed by measurement systems via a simple low-cost serial
interface. The BNC-2096 passes the analog signal from the sensor to
the NI 4472, NI 4474, SCXI-1530, or SCXI-1531 device for
conditioning and digitizing, and transmits the digital TEDS content
to the PC via an E Series multifunction DAQ device or NI 4021
switch controller.
Sensors Plug&Play
The IEEE 1451.4 standard delivers plug-and-play capability to
analog sensors. End users, systems integrators, and developers can
automate the configuation of measurement systems for analog
sensors. By defining an easy add-on approach that brings TEDS
benefits to all types of sensors, the standard makes data acquisition
systems easier to set up, configure, and maintain. The TEDS
structure is compact and flexible enough to handle a very wide range
of sensor requirements.
LabVIEW and NI-DAQmx
A fundamental component of any Sensors Plug&Play system is the
TEDS processing software. National Instruments developed the
TEDS library for LabVIEW to implement the TEDS reading and
writing functions. In addition, you can perform basic TEDS reading
and configuration direct in NI-DAQmx, reducing set-up time and
system complexity.
Analog Data
Smart TEDS Sensor
Sensor
TEDS
(EEPROM)
Analog Signal
One wire
Digital
E Series or
NI 4021
Digital Data
Analog Signals
Digital Signal
BNC-2096
NI 447x or
SCXI-153x
Ordering Information
NI BNC-2096 ................................................................778841-01
Figure 1. System Diagram
NI [ NATIONAL INSTRUMENTS CORPORATION ]
