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.

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.

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.

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.

Interface Accessory for

Class 1 TEDS Sensors

•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

•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

Measurement Services Software

• NI-DAQmx

NI BNC-2096

Smart TEDS Sensor

BNC-2096

NI 447x or

SCXI-153x

Analog Data

Digital Data

Analog Signal

Digital

One wire

Sensor

TEDS

(EEPROM)

E Series or

NI 4021

Analog Signals

Digital Signal

Figure 1. System Diagram

NI BNC-2096 ................................................................778841-01

Ordering Information