Agilent Technologies U2802A manual IVI-COM Drivers, Choosing Instrument-Specific Interface

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Getting Started

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IVI-COM Drivers

The Agilent IVI- COM drivers simplify instrument control when you are working in a COM- compatible environment. IVI- COM allows you to programmatically control your instrumentation and make measurements while providing a greater degree of instrument interchangeability and code reuse. The Agilent IVI- COM drivers support the use of IntelliSense for even greater ease- of- use within a Microsoft development environment.

The Agilent IVI- COM driver supports all Agilent Series DAQs. The Agilent Firmware Revision: A.2006.10.10 is the minimum revision required for full driver functionality.

An IVI- COM driver can program a particular set of instrument models. It implements an instrument- specific interface tuned to the capabilities of those models. The driver may also implement an IVI class- compliant interface which implements a limited set of functionality common to all instruments of the class. Instrument class- compliant interfaces are defined by the IVI Foundation. The application writer must choose whether to use the instrument- specific interface or the class- compliant interface.

The IVI inherent capabilities, through the IIviDriver interface, are available in both the instrument- specific interface and class- compliant interface. The general programming techniques are also the same.

Choosing Instrument-Specific Interface

With this interface, you have the benefit of full access to the instrument's capabilities. All capabilities in the class- compliant interface are also covered by the instrument- specific interface, but you will find some capabilities in the instrument- specific interface that are not available through the class- compliant interface. You may also see some performance enhancements, as the driver can be tuned to use efficient programming methods for that particular instrument.

Choosing Class-Compliant Interface

By limiting your program to the class- compliant interface, you have the potential advantage of syntactic interchangeability. Hence, another

IVI- COM driver (and instrument) which supports the same class could be substituted for the original driver, if the prior IVI- COM driver supports all the capability groups used in the original driver. In this case, the

Agilent U2802A 31-Channel Thermocouple Input User’s Guide

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Contents Agilent U2802A 31-Channel Thermocouple Input Device U T I O N WA RN I N G Safety Information U2802A 31-Channel Thermocouple Input User’s Guide Regulatory Markings General Safety Information Do not dispose in domestic household waste Environmental Conditions This Guide November-2007 Regulatory Information for Australia/New Zealand XII Contents Calibration List of Figures List of Tables Getting Started Introduction to Agilent U2802A 31-Channel Thermocouple Input Front View Product OverviewProduct Outlook Top ViewBottom View Side ViewTop View Front View Product DimensionsStandard Purchase Items Checklist Installations and Configurations Ii. If Agilent IO Libraries Suite 14.2 has Hard disk space 1 GB Check Your System RequirementsYou do not have the Agilent IO Libraries installed, or Check Your Pre-Installed IO Libraries SuiteIii. If Agilent IO Libraries Suite is not installed Getting Started Install the Agilent Measurement Manager Install the DAQ Hardware DriverGetting Started Agilent U2802A 31-Channel Thermocouple Input User’s Guide Getting Started Connect Your U2802A to DAQ Connect Your DAQ Device to the PCHardware Verification Launch Your Agilent Measurement Manager Choosing Class-Compliant Interface IVI-COM DriversChoosing Instrument-Specific Interface IVI- COM Using Class-Compliant InterfaceProgramming Environments IVI-COM Driver InstallationGetting Started Agilent U2802A 31-Channel Thermocouple Input User’s Guide Getting Started Features and Functions Features Applications 1System overview of U2802A with DAQ System OverviewFunctionality of the System Theory of Operation3Functional block diagram for U2802A Functional Block DiagramAnalog input channel circuitry 4Functional block diagram for thermocouple mode in U2802A5Floating signal source configuration in U2802A Agilent U2802A 31-Channel Thermocouple Input User’s Guide Digital control Cold junction sensorTrigger, Counter, External Timebase, and Analog Output Open Thermocouple DetectionFeatures and Functions Pin Configurations and Assignments Pin Assignments Pin ConfigurationsPin Description Connector J71Pin Configurations and Assignments Connector J50 Pin Configurations and Assignments Pin Pin name Description Connector J60Rear panel pinout for Connector Connector Pinout3Connector 2 pin assignment for U2355A and U2356A Pin Configurations and Assignments Product Specifications Operating Environment General SpecificationsGeneral Characteristics Product CharacteristicsOther Features Accuracy on page 54 for calculation methodology System Accuracy SpecificationsWith different number of averaging points U2356A @ 0 C to 18 C and 28 C to 45 C Example Calculating System Accuracy= 0.02% × 33.102 mV = 6.62 µV = 6.62 µV ÷ 59 µV/C = 0.112 C System accuracy with thermocouple sensor error System accuracy without thermocouple sensor errorSystem Typical Performance Thermoelectric CharacteristicsTypical Error vs. Measurement Performance Making Accurate Temperature Measurements Product Specifications Calibration Zeroing Function CalibrationCalibration Information Restore Factory Calibration Calibration Contact us
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