Fluke 8021B User Manual

NOTE
This
manual
documents
the
Model
8021 B and its
assemblies at
the revision
levels
shown in
Appendix A.
If
your
instrument
contains
assemblies with
different revision
letters,
it
will be
necessary
for you to
either update or
backdate this
manual. Refer to
the
supplemental
change/errata
sheet for
newer assemblies,
or the
backdating sheet
in
Appendix A
for older
assemblies.
8021
B
Digital
Multimeter
Instruction
Manual
P/N
616037
July
1981
Rev.
1 5/82
©1982,
John Fluke Mfg.
Co.,
Inc., all
rights
reserved. Litho in U.S.A.
IFLUKE

Fluke 8021B Specifications

General

Type	Digital Multimeter
Display	3.5 Digit LCD
DC Voltage Ranges	200mV, 2V, 20V, 200V, 1000V
Resistance Ranges	200Ω, 2kΩ, 20kΩ, 200kΩ, 2MΩ, 20MΩ
Diode Test	Yes
Continuity Test	Yes
Continuity Beeper	Yes
Battery	9V Battery
AC Voltage Ranges	20 V, 200 V
AC Voltage Accuracy	±1.0% of reading + 3 digits (50-500 Hz)
DC Current Ranges	200 µA, 2 mA, 20 mA, 200 mA
AC Current Ranges	200 µA, 2 mA, 20 mA, 200 mA, 2 A
AC Current Accuracy	±1.5% of reading + 3 digits (50-500 Hz)
Weight	340 g

Summary

SECTION 1 INTRODUCTION AND SPECIFICATIONS

1-1. INTRODUCTION

1-5. SPECIFICATIONS

Detailed technical specifications of the 8021B multimeter.

SECTION 2 OPERATING INSTRUCTIONS

2-1. INTRODUCTION

2-3. PREPARING FOR OPERATION

Covers unpacking, battery installation, and initial setup.

2-7. Battery and/or Fuse Installation/Replacement

Procedure for installing or replacing the battery and fuses.

2-25. OPERATION

Illustrates and describes how to perform measurement functions.

SECTION 3 THEORY OF OPERATION

3-1. INTRODUCTION

3-3. OVERALL FUNCTIONAL DESCRIPTION

Describes the hand-held six-function digital multimeter's features.

3-8. BLOCK DIAGRAM ANALYSIS

Analyzes the block diagram of the 8021B for understanding its operation.

SECTION 4 MAINTENANCE

4-1. INTRODUCTION

4-9. BACKUP FUSE (F2) AND CALIBRATION ACCESS

Procedure to access backup fuse and calibration adjustments.

4-11. COMPONENT/PCB ACCESS

4-19. Battery/Backup Fuse Replacement

Guidelines for replacing battery and backup fuse.

4-21. PERFORMANCE TEST

Compares instrument performance against specifications.

4-25. Display Test

4-27. Resistance Test

4-29. Continuity Test

4-31. DC Voltage Test

Checks accuracy and operation of DC voltage ranges.

4-33. AC Voltage Test

Checks accuracy and operation of AC voltage ranges.

4-35. DC Current Test

Checks operation and accuracy of DC current ranges.

4-37. CALIBRATION

Procedure to calibrate the 8021B instrument.

4-40. TROUBLESHOOTING

Guide to identify and resolve instrument malfunctions.

SECTION 5 LIST OF REPLACEABLE PARTS

5-1. INTRODUCTION