About The Ni 4350 Instruments - National Instruments NI 4350 User Manual

Introduction

About the NI 4350 Instruments

© National Instruments Corporation
This chapter describes the NI 4350 family of temperature and voltage
measurement instruments, lists what you need to get started, explains
how to unpack your NI 4350 instrument, and describes the optional
software and optional equipment.
Thank you for buying a National Instruments 4350 instrument. The
NI 4350 family consists of three instruments for the bus of your choice:
PCMCIA, ISA, and Universal Serial Bus (USB).
The NI 4350 instruments feature accurate thermocouple and DC voltage
measurements. You can also take temperature measurements with
resistance temperature detectors (RTDs), thermistors, and ohm
measurements using the built-in precision current source. You can use
the NI 4350 instrument with a personal computer to make the same
measurements you would with standard bench-top instruments such as
data loggers and DMMs.
The NI 4350 instruments contain a 24-bit sigma-delta analog-to-digital
converter (ADC) with differential analog inputs. The low leakage
construction, along with analog and digital filtering, provides excellent
resolution, accuracy, and noise rejection. With software-programmable
ground-referencing, you can reference your floating signal without
compromising voltage measurements even if the floating signal is, in
fact, ground-referenced. With software-programmable
open-thermocouple detection, you can quickly detect a thermocouple
that may have broken before or during measurement.
You can measure up to a total resistance of 600 kΩ using the built-in
25 µA precision current source. In addition, the NI 4350 instruments
have programmable TTL-compatible digital I/O (DIO) for monitoring
TTL-level inputs, interfacing with external devices, and generating
alarms.
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NI 4350 User Manual