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True-rms Digital Multimeters
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© 2007, 2008 Fluke Corporation. All rights reserved. Specifications subject to change without notice.
All product names are trademarks of their respective companies.
Lifetime Limited Warranty
Each Fluke 20, 70, 80, 170, 180 and 280 Series DMM will be free from defects in material and workmanship for its lifetime. As used herein,
“lifetime” is defined as seven years after Fluke discontinues manufacturing the product, but the warranty period shall be at least ten years from
the date of purchase. This warranty does not cover fuses, disposable batteries, damage from neglect, misuse, contamination, alteration, acci-
dent or abnormal conditions of operation or handling, including failures caused by use outside of the product’s specifications, or normal wear
and tear of mechanical components. This warranty covers the original purchaser only and is not transferable.
For ten years from the date of purchase, this warranty also covers the LCD. Thereafter, for the lifetime of the DMM, Fluke will replace the LCD
for a fee based on then current component acquisition costs.
To establish original ownership and prove date of purchase, please complete and return the registration card accompanying the product, or
register your product on
http://www.fluke.com.
Fluke will, at its option, repair at no charge, replace or refund the purchase price of a defective
product purchased through a Fluke authorized sales outlet and at the applicable international price. Fluke reserves the right to charge for
importation costs of repair/replacement parts if the product purchased in one country is sent for repair elsewhere.
If the product is defective, contact your nearest Fluke authorized service center to obtain return authorization information, then send the
product to that service center, with a description of the difficulty, postage and insurance prepaid (FOB Destination). Fluke assumes no risk
for damage in transit. Fluke will pay return transportation for product repaired or replaced in-warranty. Before making any non-warranty
repair, Fluke will estimate cost and obtain authorization, then invoice you for repair and return transportation.
THIS WARRANTY IS YOUR ONLY REMEDY. NO OTHER WARRANTIES, SUCH AS FITNESS FOR A PARTICULAR PURPOSE, ARE
EXPRESSED OR IMPLIED. FLUKE SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAM-
AGES OR LOSSES, INCLUDING LOSS OF DATA, ARISING FROM ANY CAUSE OR THEORY. AUTHORIZED RESELLERS ARE NOT
AUTHORIZED TO EXTEND ANY DIFFERENT WARRANTY ON FLUKE’S BEHALF. Since some states do not allow the exclusion or limita-
tion of an implied warranty or of incidental or consequential damages, this limitation of liability may not apply to you. If any provision of this
warranty is held invalid or unenforceable by a court or other decision-maker of competent jurisdiction, such holding will not affect the validity
or enforceability of any other provision.
Fluke Corporation
P.O. Box 9090
Everett, WA 98206-9090
U.S.A.
5/07
Fluke Europe B.V.
P.O. Box 1186
5602 BD Eindhoven
The Netherlands
Table of Contents
Title
Lifetime Limited Warranty...............................................................................................
Introduction ....................................................................................................................
Contacting Fluke ............................................................................................................
Safety Information ..........................................................................................................
Hazardous Voltage.........................................................................................................
Symbols .........................................................................................................................
Features .........................................................................................................................
Understanding the Push Buttons ...............................................................................
Using Auto Repeat ....................................................................................................
Understanding the Display ........................................................................................
Bar Graph .............................................................................................................
Status Bar Elements .............................................................................................
Page Area.............................................................................................................
Softkey Labels ......................................................................................................
Adjusting Display Contrast....................................................................................
Understanding the Rotary Switch ..............................................................................
Using the Input Terminals..........................................................................................
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Controlling Meter Power ................................................................................................
Powering the Meter On and Off Manually .................................................................
Battery Level Indicator ..............................................................................................
Automatic Power-Off .................................................................................................
Battery Saver Mode ..................................................................................................
Controlling the Backlight ...........................................................................................
Selecting the Range ......................................................................................................
Understanding Function Menus .....................................................................................
Input Alert™ Feature......................................................................................................
Using the Info Button .....................................................................................................
Hold and AutoHold Mode...............................................................................................
Measuring Crest Factor .................................................................................................
Capturing Minimum and Maximum Values ....................................................................
Capturing Peak Values ..................................................................................................
Low Pass Filter (Model 289 only)...................................................................................
Making Relative Measurements.....................................................................................
Making Measurements...................................................................................................
Measuring AC Voltage ..............................................................................................
Using LoZ for Voltage Measurements (Model 289 only) ...........................................
Making dB Measurements ........................................................................................
Measuring DC Voltage ..............................................................................................
Measuring AC and DC Signals .................................................................................
Measuring Temperature............................................................................................
Using the
Y
Function (Model 289 Only) ...............................................................
Testing for Continuity ................................................................................................
Using Conductance for High Resistance Tests.........................................................
Measuring Capacitance ............................................................................................
Testing Diodes ..........................................................................................................
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Contents
(continued)
Measuring Current.....................................................................................................
Measuring Frequency................................................................................................
Measuring Duty cycle ................................................................................................
Measuring Pulse Width..............................................................................................
Changing Meter Setup Options ......................................................................................
Resetting Meter Setup Options..................................................................................
Setting Display Contrast ............................................................................................
Setting the Meter’s Language....................................................................................
Setting Date and Time...............................................................................................
Setting Backlight and Auto Off Timeouts ...................................................................
Setting a Custom dBm Reference .............................................................................
Disabling and Enabling the Beeper ...........................................................................
Enabling and Disabling the Smoothing Mode ............................................................
Using Other Setup Options........................................................................................
Using Memory ................................................................................................................
Storing Individual Measurement Data........................................................................
Naming Saved Data ..................................................................................................
Viewing Memory Data ...............................................................................................
Viewing Snapshot and Summary Data .................................................................
Viewing Trend Data ..............................................................................................
Zooming in on Trend Data ....................................................................................
Deleting Stored Measurement Data ..........................................................................
Recording Measurement Data .......................................................................................
Setting up a Recording Session ................................................................................
Setting the Event Threshold Value ............................................................................
Starting a Recording Session ....................................................................................
Stopping a Recording Session ..................................................................................
Using Communications ..................................................................................................
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