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Fluke 189II/AN User Manual

Fluke 189II/AN
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PN 3270465
February 2008, Rev. 1, 6/10
© 2008 - 2010 Fluke Corporation. All rights reserved. Printed in USA. Specifications are subject to change without notice.
All product names are trademarks of their respective companies.
189II/AN
True-rms Digital Multimeter
Service Manual
Reproduction and distribution of this technical manual is
authorized for Government Purposes.

Table of Contents

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Fluke 189II/AN Specifications

General IconGeneral
Resistance MeasurementYes
Frequency MeasurementYes
Safety RatingCAT III 1000 V, CAT IV 600 V
Display TypeLCD
Max Voltage Measurement1000 V
Basic DC Voltage Accuracy0.025%
Max Current Measurement10 A
Data LoggingYes
Battery Type2 x AA

Summary

Introduction

Contacting Fluke

Information on how to contact Fluke for support or orders.

Precautions and Safety Information

International Symbols

Explanation of symbols used in the manual and on the meter.

Safety Information

Guidelines to prevent electric shock, injury, or damage to the meter.

General Specifications

AC Voltage Specifications

Specifies AC voltage measurement ranges, resolution, and accuracy across frequencies.

AC Current Specifications

Details AC current measurement ranges, resolution, and accuracy across frequencies.

DC Voltage Specification

Outlines DC voltage measurement ranges, resolution, and accuracy.

DC Current Specifications

Details DC current measurement ranges, resolution, and accuracy.

Resistance Specifications

Specifies resistance measurement ranges, resolution, and accuracy.

Temperature Specifications

Provides temperature measurement ranges, resolution, and accuracy.

Capacitance and Diode Test Specifications

Details specifications for capacitance and diode testing functions.

Frequency Counter Specifications

Specifies frequency counter ranges, resolution, and accuracy.

MIN MAX, Recording, and Peak Specifications

Details specifications for MIN/MAX, recording, and peak measurement functions.

Input Characteristics

Describes overload protection, input impedance, and rejection ratios.

Burden Voltage (A, mA, μΑ)

Specifies burden voltage for current measurement ranges.

Unpacking and Inspection

Inspection

Procedure for inspecting meter contents for shipping damage.

Required Equipment

Theory of Operation

Analog Signal Conditioning

Explains how analog signals are processed for measurement.

Control Section

Describes the µP and memory responsible for user interface and control.

Power Supply

Details the meter's internal power generation from battery voltage.

Block Diagram

Visual representation of the meter's internal functional blocks.

Service and Maintenance Procedures

Fault Isolation Techniques

Guidance on troubleshooting and identifying faults.

Restoration Actions

Refers to the "Performance Tests" section for restoration actions.

Static Awareness

Basic Maintenance

Opening the Meter Case

Step-by-step instructions for safely opening the meter's case.

Removing and Reinserting the Printed Circuit Assembly

Procedure for removing and reinstalling the main circuit board.

Reassembling the Meter Case

Steps for correctly reassembling the meter case after service.

Testing Fuses (F1 and F2)

Method for testing the internal fuses of the meter.

Replacing Fuses

Instructions for safely replacing the meter's fuses with correct types.

Replacing the Batteries

Procedure for replacing the meter's batteries, noting polarity.

Cleaning

Guidelines for cleaning the meter case and input terminals.

Performance Tests

Factory Default

Steps to reset the meter to its factory default settings.

Power LED Test

How to verify the functionality of the meter's power button LED.

Backlight Test

Procedure to test the meter's display backlight.

Current Terminal Sensing Test

Verifies the functionality of the Input Alert™ feature.

Keypad Test

Method to ensure all keypad buttons are active and responsive.

LCD Test

Procedure to check the integrity and functionality of the LCD display pixels.

IR Port Verification

Steps to verify communication through the meter's IR port.

Temperature Accuracy Test

Procedure to test the accuracy of the temperature measurement function.

Accuracy Tests for Volts, Current, Ω, +, and 艹 Test Functions

Comprehensive tests for verifying accuracy across various measurement functions.

Calibration Adjustment

Operation

Overview of initiating and navigating the calibration process.

Entering the Password

Steps to enter the required password for calibration.

Changing the Password

Procedure to modify the existing calibration password.

Restoring Factory Default Password

How to reset the calibration password to the default value.

Calibration Adjustment Procedure

Detailed steps and guidance for performing meter calibration.

Screenshot Description

Explanation of the elements shown in the calibration adjustment screenshot.

Softkeys

Describes the function of softkeys during calibration.

Navigation Buttons

Explains how navigation buttons function during calibration.

Mode Buttons

Notes which mode buttons are disabled during calibration.

Description of Calibration Adjustment Steps

General guide on performing calibration steps and interpreting results.

Calibration Adjustment Steps

Specific sequence and parameters for calibrating the meter.

Parts

Schematic Diagrams

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