Fluke 77 Operating Manual

Model 77 Series IV

Digital Multimeter

Users Manual

®

PN 2695884
September 2006

© 2006 Fluke Corporation. All rights reserved. Printed in USA
All product names are trademarks of their respective companies.

Lifetime Limited Warranty

Each Fluke 20, 70, 80, 170 and 180 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,
accident 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
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 DAM­AGES 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 limita­tion 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 Fluke Europe B.V.
P.O. Box 9090 P.O. Box 1186
Everett, WA 98206-9090 5602 BD Eindhoven
U.S.A. The Netherlands

. Fluke will, at its option, repair at no charge, replace or refund the purchase price of a defective

Visit the Fluke website at: www.fluke.com

Register your Meter at: register.fluke.com

2/02

Table of Contents

Title Page

Contacting Fluke...................................................................................................................... 1

Warning and Caution Statements............................................................................................ 1

Unsafe Voltage ........................................................................................................................1

Test Lead Alert ........................................................................................................................1

Battery Saver (Sleep Mode) .................................................................................................... 2

Terminals .................................................................................................................................2

Rotary Switch Positions ...........................................................................................................2

Display .....................................................................................................................................3

MIN MAX AVG Recording Mode .............................................................................................4

AutoHOLD Modes.................................................................................................................... 4

YELLOW Button ...................................................................................................................... 4

Display Backlight ..................................................................................................................... 4

Manual Ranging and Autoranging........................................................................................... 5

Power-Up Options ................................................................................................................... 5

Making Basic Measurements .................................................................................................. 6

Measuring AC and DC Voltage ..........................................................................................6

Measuring Resistance ........................................................................................................6

Measuring Capacitance...................................................................................................... 6

Testing for Continuity..........................................................................................................7

Testing Diodes.................................................................................................................... 7

Measuring AC or DC Current .............................................................................................8

Measuring Frequency......................................................................................................... 8

Using the Bar Graph ................................................................................................................ 9

Cleaning................................................................................................................................... 9

Testing the Fuses ....................................................................................................................9

Replacing the Battery and Fuses ............................................................................................10

Specifications........................................................................................................................... 11

i

To avoid possible electrical shock or personal injury, follow these guidelines:

⇒ Use the Meter only as specified in this manual or the protection provided by the Meter might be impaired.
⇒ Do not use the Meter or test leads if they appear damaged, or if the Meter is not operating properly. If in doubt, have the

Meter serviced.

⇒ Always use the proper terminals, switch position, and range for measurements.
⇒ Verify the Meter's operation by measuring a known voltage.
⇒ Do not apply more than the rated voltage, as marked on the Meter, between the terminals or between any terminal and earth

ground.

⇒ Use caution with voltages above 30 V ac rms, 42 V ac peak, or 60 V dc. These voltages pose a shock hazard.
⇒ Disconnect circuit power and discharge all high-voltage capacitors before testing resistance, continuity, diodes, or

capacitance.

⇒ Do not use the Meter around explosive gas or vapor.
⇒ When using the test leads, keep your fingers behind the finger guards.
⇒ Remove test leads from the Meter before opening the Meter case or battery door.

B
F

F
B

J

W

b

s

#

AC (Alternating Current)
DC (Direct Current)

DC/AC

Earth ground
Important Information; see manual

Battery (Low battery when shown on
display)

Inspected and licensed by TÜV
(Technischer Überwachungs Verein)
Product Services

VDE (Verband Deutscher Electroniker)

XW

Warning. Read before using the Meter

Symbols

I

P

$

T

X
!

;

N10140

Fuse
Conforms to European Union directives

Canadian Standards Association

Double insulated
Hazardous Voltage

Underwriters Laboratories, Inc.
Meter in accordance with IEC 61010-1. 54CJ
Conforms to relevant Australian standards

ii

Model 77 Series IV

Digital Multimeter

The Fluke Model 77 Series IV is a battery-powered, average
responding-rms indicating multimeter (hereafter "the Meter"), with
a 6000-count, 3 3/4-digit display, and a bar graph.

This meter meets CAT III and CAT IV IEC 61010 standards. The
IEC 61010 safety standard defines four measurement categories
(CAT I to IV) based on the magnitude of danger from transient
impulses. CAT III meters are designed to protect against transients
in fixed-equipment installations at the distribution level; CAT IV
meters are designed to protect against transients from the primary
supply level (overhead or underground utility service).

The Meter measures or tests the following:

♦ AC / DC voltage & current ♦ Diodes
♦ Resistance ♦ Continuity
♦ Voltage frequency ♦ Capacitance

Contacting Fluke

To contact Fluke, call:

1-888-993-5853 in USA
1-800-363-5853 in Canada
[phone] in Europe
[phone] in Japan
[phone] in Singapore

[phone] from anywhere in the world
Visit Fluke's web site at: www.fluke.com
Register your Meter at: register.fluke.com

Warning and Caution Statements

A XWWarning identifies hazardous conditions and actions that
could cause bodily harm or death.

A Caution identifies conditions and actions that could damage the
Meter, the equipment under test, or cause permanent loss of data.

Unsafe Voltage

To alert you to the presence of a potentially hazardous voltage,
when the Meter detects a voltage ≥30 V or a voltage overload
(OL), the

Ysymbol is displayed.

Test Lead Alert

To remind you to check that the test leads are in the correct
terminals,
rotary switch to or from the mA or A position.

Attempting to make a measurement with a test lead in
an incorrect terminal might blow a fuse, damage the
Meter, and cause serious personal injury.

is momentarily displayed when you move the

LEAd

W Warning

1

Model 77 Series IV

Users Manual

Battery Saver (Sleep Mode)

The Meter enters the "Sleep" mode and blanks out the display if
there is no function change or button press for 20 minutes. To
disable the Sleep mode, hold down the yellow button while turning
the Meter on. The Sleep mode is always disabled in the MIN MAX
AVG mode and the AutoHOLD mode.

Terminals

.

1

V

FUSED

2

Item Description

Input terminal for AC and DC milliamp measurements to

1

400 mA.
Input terminal for AC and DC current measurements to

2

10 A.
Input terminal for voltage, continuity, resistance, diode

3

test, capacitance, and frequency measurements.
Common (return) terminal for all measurements.

4

3

4

AIK01F.EPS

Rotary Switch Positions

Switch

Position

AC voltage from 0.001 to 1000 V.

K

Hz

m

E
R

G

F

mA

F

BA

Frequency from 2 Hz to 99.99 kHz.
DC voltage from 1 mV to 1000 V.

L

DC mV from 0.1 mV to 600 mV.

L

Ohms from 0.1 Ω to 50 MΩ.

e

Farads from 1 nF to 9999 μF.
Beeper turns on at <25 Ω and turns off at >250 Ω.

Diode test. Displays OL above 2.4 V.

B

AC mA from 0.01 mA to 400 mA.
DC mA from 0.01 mA to 400 mA.

AC A from 0.001 A to 10 A.
DC A from 0.001 A to 10 A

>10.00 display flashes.
>20 A, OL is displayed.

Measurement Function

2