87V MAX

Digital Multimeter
Calibration Information

Introduction
XWWarning
To prevent electric shock or injury, do not perform the
performance tests or calibration adjustment procedures unless
qualified to do so.
The information provided in this document is for the use of
qualified personnel only.
This document provides adjustment and performance test procedures for the
Fluke 87V MAX Digital Multimeter (the Meter).
See the 87V MAX Users Manual for complete operating instructions.

Contact Information
To contact Fluke, call one of the following telephone numbers:
• Technical Support USA: 1-800-44-FLUKE (1-800-443-5853)
• Calibration/Repair USA: 1-888-99-FLUKE (1-888-993-5853)
• Canada: 1-800-36-FLUKE (1-800-363-5853)
• Europe: +31 402-675-200
• Japan: +81-3-6714-3114
• Singapore: +65-6799-5566
• China: +86-400-921-0835
• Brazil: +55-11-3530-8901
• Anywhere in the world: +1-425-446-5500
Or, visit Fluke's website at www.fluke.com.
To register your product, visit http://register.fluke.com.
To view, print, or download the latest manual supplement, visit
http://us.fluke.com/usen/support/manuals.

Safety Information
General Safety Information is in the printed Safety Information document that
ships with the Product and at www.fluke.com. More specific safety information is
listed where applicable.

January 2020
© 2020 Fluke Corporation. All rights reserved. Specifications are subject to change without notice.
All product names are trademarks of their respective companies. 1
87V MAX
Calibration Information

General Specifications
Maximum voltage between any
terminal and earth ground ........................................... 1000 V rms
Fuse Protection for mA or μA inputs .......................... 0.44 A, 1000V, IR 10kA
Fuse Protection for A inputs........................................ 11 A, 1000 V, IR 17 kA
Display
Digital .......................................................................... 6000 counts, updates 4/sec / 19,999 counts in high-resolution
mode
Bargraph ..................................................................... 33 segments; updates 40/sec
Altitude
Operating .................................................................... 2000 meters
Storage ....................................................................... 10 000 meters
Temperature
Operating .................................................................... -15 °C to 55 °C, to -40 °C for 20 minutes when taken from 20 °C
Storage ....................................................................... -55 °C to 85 °C (without battery)
-55 °C to 60 °C (with battery)
Temperature coefficient ............................................... 0.05 X (specified accuracy) / °C (<18 °C or >28 °C)
Safety ............................................................................. IEC 61010-1: Pollution Degree 2
IEC 61010-2-033: CAT III 1000 V, CAT IV 600 V
Electromagnetic Compatibility (EMC) ......................... In an RF field of 3 V/m, accuracy = specified accuracy +20
counts, except 600 μA dc range total accuracy = specified
accuracy +60 counts. Temperature not specified.
International ................................................................ IEC 61326-1: Portable Electromagnetic Environment
CISPR 11: Group 1, Class A
Group 1: Equipment has intentionally generated and/or uses conductively coupled radio frequency energy
that is necessary for the internal function of the equipment itself.
Class A: Equipment is suitable for use in all establishments other than domestic and those directly connected
to a low-voltage power supply network that supplies buildings used for domestic purposes. There may be
potential difficulties in ensuring electromagnetic compatibility in other environments due to conducted and
radiated disturbances.
Caution: This equipment is not intended for use in residential environments and may not provide adequate
protection to radio reception in such environments.
Emissions that exceed the levels required by CISPR 11 can occur when the equipment is connected to a test
object.
Korea (KCC) ............................................................... Class A Equipment (Industrial Broadcasting & Communication
Equipment)
Class A: Equipment meets requirements for industrial electromagnetic wave equipment and the seller or user
should take notice of it. This equipment is intended for use in business environments and not to be used in
homes.
USA (FCC).................................................................. 47 CFR 15 subpart B. This product is considered an exempt
device per clause 15.103. In an RF field of 3 V/M, accuracy =
specified accuracy +20 counts, except 600 μA dc range total
accuracy = specified accuracy +60 counts. Temperature not
specified
Relative Humidity .......................................................... 0 % to 95 % (0 °C to 35 °C)
0 % to 70 % (35 °C to 55 °C)

2
 Digital Multimeter
Detailed Specifications

Battery Type .................................................................. 3 AA Alkaline batteries, NEDA 15A IEC LR6

Battery Life .................................................................... 800 hr typical without backlight (Alkaline)
Vibration ........................................................................ Per MIL-PRF-28800 for a Class 2 instrument
Size (H x W x L) ............................................................. 1.8 in x 3.7 in x 7.7 in (4.6 cm x 9.4 cm x 19.7 cm)
Size with Holster ........................................................... 2.4 in x 4.3 in x 8.5 in (6.0 cm x 10.1 cm x 21.5 cm)
Weight ............................................................................ 1.14 lb (517.1 g)
Weight with Holster and Flex-Stand............................ 1.54 lb (698.5 g)
IP Rating ........................................................................ IEC 60529: IP67

Detailed Specifications
For all detailed specifications:
Accuracy is specified for 2 years after calibration, at operating temperatures of 18 °C to 28 °C, with relative humidity at
0 % to 95 %. Accuracy specifications take the form of ±([% of Reading] + [Number of least-significant digits]).
For the 4 ½-digit mode, multiply the number of least-significant digits (counts) by 10.

AC Voltage
AC conversions are ac-coupled and valid from 3 % to 100 % of range.

Accuracy
Range Resolution
45 – 65 Hz 15 – 200 Hz 200 – 440 Hz 440 Hz – 1 kHz 1 – 5 kHz 5 – 20 kHz
600.0 mV 0.1 mV
±(0.7 % + 4) ±(2 % + 4) ±(2 % + 20) [2]
6.000 V 0.001 V
60.00 V 0.01 V ±(1.0 % + 4) [1] Unspecified
±(2 % + 4) [3]
600.0 V 0.1 V Unspecified
1000 V 1V ±(0.7 % + 2) Unspecified Unspecified
+1.0 % + 4
Low-Pass Filter ±(1.0 % + 4) [1] Unspecified Unspecified Unspecified
-6.0 % - 4 [4]
[1] Below 30 Hz, use smoothing function. Below 20 Hz add 0.6 %.
[2] Below 10 % of range, add 12 counts.
[3] Frequency range: 1 to 2.5 kHz
[4] Specification increases from -1 % to -6 % at 440 Hz when filter is used.

DC Voltage, Conductance, and Resistance

Function Range Resolution Accuracy
mV dc 600.0 mV 0.1 mV ±(0.1 % + 1)
6.000 V 0.001 V
60.00 V 0.01 V
V dc ±(0.05 % + 1)
600.0 V 0.1 V
1000 V 1V
600.0 Ω 0.1 Ω ±(0.2 % + 2) [2]
6.000 kΩ 0.001 kΩ
60.00 kΩ 0.01 kΩ
Ω ±(0.2 % + 1)
600.0 kΩ 0.1 kΩ
6.000 MΩ 0.001 MΩ
50.00 MΩ 0.01 MΩ ±(1.0 % + 1) [1]
nS 60.00 nS 0.01 nS ±(1.0 % + 10) [1,2]
[1] Add 0.5 % of reading when measuring above 30 MΩ in the 50 MΩ range, and 20 counts below 33 nS in the 60 nS range.
[2] When using the rel function to compensate for offsets.

3
87V MAX
Calibration Information

Temperature
Range Resolution Accuracy [1,2]
-200 °C to +1090 °C 0.1 °C ±(1.0 % + 10)
-328 °F to +1994 °F 0.1 °F ±(1.0 % + 18)
[1] Does not include error of the thermocouple probe.
[2] Accuracy specification assumes ambient temperature stable to ± 1 °C. For ambient temperature changes of ± 5 °C, rated accuracy applies after 2
hours.

AC Current
Accuracy[1]
Function Range Resolution Burden Voltage (45 Hz – 2 kHz)

600.0 μA 0.1 μA 100 μV/μA

μA ac
6000 μA 1 μA 100 μV/μA
60.00 mA 0.01 mA 1.8 mV/mA
mA ac ±(1.0 % + 2)
400.0 mA [2] 0.1 mA 1.8 mV/mA
6.000 A 0.001 A 0.03 V/A
A ac
10.00 A [3,4] 0.01 A 0.03 V/A
[1] AC conversion are ac coupled and calibrated to the rms value of a sine wave input.
[2] 400 mA continuous. 600 mA for 18 hr maximum.
[5] W 10 A continuous up to 35 °C. <20 minutes on, 5 minutes off at 35 °C to 55 °C. >10 A to 20 A for 30 seconds maximum, 5 minutes off.

[6] >10 A accuracy unspecified.

DC Current
Function Range Resolution Burden Voltage Accuracy

600.0 μA 0.1 μA 100 μV/μA ±(0.2 % + 4)

μA dc
6000 μA 1 μA 100 μV/μA ±(0.2 % + 2)
60.00 mA 0.01 mA 1.8 mV/mA ±(0.2 % + 4)
mA dc
400.0 mA [1] 0.1 mA 1.8 mV/mA ±(0.2 % + 2)
6.000 A 0.001 A 0.03 V/A ±(0.2 % + 4)
A dc
10.00 A [2,3] 0.01 A 0.03 V/A ±(0.2 % + 2)
[1] 400 mA continuous. 600 mA for 18 hr maximum.
[2] W 10 A continuous up to 35 °C. <20 minutes on, 5 minutes off at 35 °C to 55 °C. >10 A to 20 A for 30 seconds maximum, 5 minutes off.
[3] >10 A accuracy unspecified.

Capacitance
Range Resolution Accuracy
10.00 nF 0.01 nF
±(1.0 % + 2) [1]
100.0 nF 0.1 nF
1.000 μF 0.001 μF
10.00 μF 0.01 μF
±(1.0 % + 2)
100.0 μF 0.1 μF
9999 μF 1 μF
[1] With a film capacitor or better, using the rel mode to zero residual.

Diode
Range Resolution Accuracy
2.000 V 0.001 V ±(1.0 % + 1)

4
 Digital Multimeter
Detailed Specifications

Frequency
Range Resolution Accuracy
199.99 Hz 0.01 Hz
1999.9 Hz 0.1 Hz
±(0.005 % + 1) [1]
19.999 kHz 0.001 kHz
199.99 kHz 0.01 kHz
>200 kHz 0.1 kHz Unspecified
[1] From 0.5 Hz to 200 kHz and for pulse widths >2 μs.

Frequency Counter Sensitivity and Trigger Levels

Minimum Sensitivity (RMS Sine Wave) Approximate Trigger Level
Input Range
5 Hz – 20 kHz 0.5 Hz – 200 kHz (DC Voltage Function)

600 mV dc 70 mV (to 400 Hz) 70 mV (to 400 Hz) 40 mV

600 mV ac 150 mV 150 mV -
6V 0.3 V 0.7 V 1.7 V
60 V 3V 7 V (≤140 kHz) 4V
600 V 30 V 70 V (≤14.0 kHz) 40 V
1000 V 100 V 200 V (≤1.4 kHz) 100 V

Duty Cycle (Vdc and mVdc)

Range Accuracy
0.0 % to 99.9 % [1] Within ± (0.2 % per kHz + 0.1 %) for rise times < 1 μs.
[1] 0.5 Hz to 200 kHz, pulse width >2 μs. Pulse width range is determined by the frequency by the frequency of the signal.

Input Characteristics
Input Common Mode
Overload
Function Impedance Rejection Ratio Normal Mode Rejection
Protection[1]
(nominal) (1 kΩ unbalance)
> 120 dB at dc, 50 Hz
 1000 V rms > 60 dB at 50 Hz or 60 Hz
or 60 Hz
10 MΩ <100 pF
> 120 dB at dc, 50 Hz
 1000 V rms > 60 dB at 50 Hz or 60 Hz
or 60 Hz
10 MΩ < 100 pF
 1000 V rms > 60 dB, dc to 60 Hz
(ac-coupled)

Full Scale Voltage Typical Short Circuit Current

Open Circuit
Test Voltage 50 MΩ or
To 6 MΩ 600 Ω 6 kΩ 60 kΩ 600 kΩ 6 MΩ 50 MΩ
60 nS

Ω 1000 V rms <2.8 V dc <850 mV dc <1.3 V dc 500 μA 100 μA 10 μA 1 μA 0.2 μA 0.1 μA

 1000 V rms <2.8 V dc 2.200 V dc 1.0 mA typical

[1] 106 V Hz Max

5
87V MAX
Calibration Information

MIN MAX Recording

Nominal Response Accuracy
100 ms to 80 %
Specified accuracy ±12 counts for changes >200 ms in duration
(dc functions)
120 ms to 80 %
Specified accuracy ±40 counts for changes >350 ms and inputs >25 % of range
(ac functions)
Specified accuracy ±100 counts for changes >250 μs in duration
250 μs (peak) [1] (add ±100 counts for readings over 6000 counts)
(add ±100 counts for readings in Low Pass mode)
[1] For repetitive peaks: 1 ms for single events.

Basic Maintenance
XWWarning
To prevent possible electrical shock, fire, or personal injury:
• Remove the input signals before you clean the Product.
• Do not operate the Product with covers removed or the case
open. Hazardous voltage exposure is possible.
• Use only specified replacement parts.
• Have an approved technician repair the Product.
General Maintenance
Periodically wipe the case with a damp cloth and mild detergent. Do not use
abrasives or solvents.
Dirt or moisture in the terminals can affect readings and can falsely activate the
Input Alert feature. Clean the terminals as follows:
1. Turn the Meter off and remove all test leads.
2. Shake out any dirt that may be in the terminals.
3. Soak a clean swab with mild detergent and water. Work the swab around in
each terminal. Dry each terminal using canned air to force the water and
detergent out of the terminals.

6
 Digital Multimeter
Basic Maintenance

h Static Awareness h
Semiconductors and integrated circuits can be damaged by electrostatic
X discharge during handling. This notice explains how to minimize damage to
these components.
1. Understand the problem.
2. Learn the guidelines for proper handling.
3. Use the proper procedures, packaging, and bench techniques.
Follow these practices to minimize damage to static sensitive parts.
XW Warning
To prevent electric shock or personal injury. De-
energize the product and all active circuits before
opening a product enclosure, touching or handling
any PCBs or components.

• Minimize handling. • Keep parts in the original • Handle static-sensitive

containers until ready for parts only at a static-
• Handle static-sensitive
use. free work station.
parts by non-conductive
edges. • Use static shielding • Put shorting strips on
containers for handling the edge of the
• Do not slide static-
and transport. connector to help
sensitive components
protect installed static-
over any surface. • Avoid plastic, vinyl, and
sensitive parts.
Styrofoam® in the work
• When removing plug-in
area. • Use anti-static type
assemblies, handle only
solder extraction tools
by non-conductive
only.
edges.
• Use grounded-tip
• Never touch open-edge
soldering irons only.
connectors except at a
static-free work station.

7
87V MAX
Calibration Information

Fuse Test
As shown in Figure 1, with the Meter in the  function, insert a test lead into
the  jack and place the probe tip on the other end of the test lead against the
metal of the current input jack. If “” appears in the display, the probe tip has
been inserted too far into the amps input jack. Back the lead out a bit until the
message disappears and either OL or a resistance reading appears in the
display. The resistance value should be as shown in Figure 1. If the tests give
readings other than those shown, have the Meter serviced.
XWWarning
To prevent possible electrical shock, fire, or personal injury:
• Replace a blown fuse with exact replacement only for continued
protection against arc flash.
• Use only specified replacement fuses.

Good F2 fuse: 0.995 kΩ to

1.005 kΩ
Replace fuse: OL Good F1 fuse: 00.0 Ω to
00.5 Ω
Replace fuse: OL
Touch top half
of input contacts

gaq105.emf
Figure 1. Current Fuse Test

How to Replace the Batteries

Replace the batteries with three AA batteries (NEDA 15A IEC LR6).
XWWarning
To prevent possible electrical shock, fire, or personal injury:
• Batteries contain hazardous chemicals that can cause burns
or explode. If exposure to chemicals occurs, clean with
water and get medical aid.
• Repair the Product before use if the battery leaks. Battery
leakage may create a shock hazard or damage the Product.
• Do not put battery cells and battery packs near heat or fire.
Do not put in sunlight.
• MSHA approved for use with three Energizer P/N E91 or
three Duracell P/N MN1500 1.5 volt, “AA” alkaline batteries
only. All cells are to be replaced at the same time with
identical part number cells in fresh air locations only.

8
 Digital Multimeter
Basic Maintenance

Replace the battery as follows, refer to Figure 2:

1. Turn the rotary switch to OFF and remove the test leads from the terminals.
2. Remove the six Phillips-head screws from the case bottom and remove the
battery door ().
Note
While lifting the battery door, ensure the rubber gasket stays
attached to the battery compartment barrier.
3. Remove the three batteries and replace all three with AA Alkaline batteries
().
4. Ensure the battery compartment gasket () is properly installed around the
outside edge of the battery compartment barrier.
5. Replace the battery door by aligning the battery compartment barrier with
battery compartment.
6. Secure the door with the six Phillips-head screws.
How to Replace the Fuses
Referring to Figure 2, examine or replace the Meter's fuses as follows:
1. Turn the rotary switch to OFF and remove the test leads from the terminals.
2. Refer to step 2 under the How to Replace the Batteries section above to
remove the battery door.
3. Remove the fuse compartment seal () from the fuse compartment.
4. Gently lift out the fuse compartment door () from the fuse compartment.
5. Remove the fuse by gently prying one end loose, then sliding the fuse out of
its bracket ().
6. Install ONLY specified replacement fuses with the amperage, voltage, and
speed ratings shown in Table 5. The 440-mA fuse is shorter than the 10-A
fuse. For correct placement of each fuse, note the marking on the printed
circuit board under each fuse.

9
87V MAX
Calibration Information

7. Replace the fuse compartment door by aligning the arrow on the fuse door
with the arrow on the case bottom and lowering the door into the fuse
compartment.
8. Replace the fuse compartment seal by aligning the tab on the seal with the
outline on the case bottom. Ensure the seal () is properly seated.
9. Refer to steps four through six under the Replacing the Batteries section
above to reinstall the battery door.

1
3 4

gaq10.emf
Figure 2. Battery and Fuse Replacement

10
 Digital Multimeter
Performance Tests

Performance Tests
XWWarning
To prevent electric shock, do not perform the performance test
procedures unless the Meter is fully assembled.
The following performance tests verify the complete operation of the Meter and
check the accuracy of each Meter function against its specifications.
Performance tests should be performed bi-annually to ensure that the Meter is
within accuracy specifications. If the Meter fails any part of the test, calibration
adjustment and/or repair is indicated.
In the performance tests, the Meter is referred to as the device under test (DUT).
Required Equipment
Table 1 lists the equipment required to conduct a performance test on the Meter.

Table 1. Required Equipment

Recommended Equipment Measurement Function Accuracy

5520A Multi-product Calibrator DC Volts 0 to 1000 V

(or equivalent) ±0.012 %

DC Current 350 μA to 2 A
±0.05 %

AC Volts 0 to 1000 V
±0.15 % @ 60 Hz to 20 kHz ±3 %

AC Current 350 μA to 2 A
±0.39 % @ 60 Hz to 1 kHz

Resistance 1 Ω to 100 MΩ
±0.06 %

Capacitance 9 to 900 μF
±0.475 %

Frequency 19.999 to 199.99 kHz, ±0.0137 %

150 mV to 6 Vrms, ±5 %

K-type Thermocouple, mini-plug Temperature

on both ends

11
87V MAX
Calibration Information

Testing Meter Accuracy

To test the accuracy of the Meter, perform the steps in Table 2.

Table 2. Accuracy Tests

Test
Step Range 5520A Output Display Reading
Function

1  600 mV 60 mV, 60 Hz 59.2 to 60.8

AC Volts
2 600 mV 330 mV, 60 Hz 327.3 to 332.7

3 600 mV 600 mV, 13 586.0 to 614.0

kHz

4 6V 675 mV, 60 Hz 0.666 to 0.684

5 6V 3.3 V, 60 Hz 3.273 to 3.327

6 6V 3.3 V, 20 kHz 3.214 to 3.386

7 60 V 6.75 v, 60 Hz 6.68 to 6.82

8 60 V 33 V, 60 Hz 32.75 to 33.25

9 60 V 33 V, 20 kHz N/A

10 60 V 33 V, 5 kHz N/A

11 600 V 67.5 V, 60 Hz 66.8 to 68.2

12 600 V 330 V, 60 Hz 327.5 to 332.5

13 600 V 330 V, 2.5 kHz 323.0 to 337.0

14 1000 V 100 V, 60 Hz 97 to 103

15 1000 V 1000 V, 1 kHz 986 to 1014

16  600 mV 150 mV, 99.95 99.93 to 99.97

AC Volts kHz
Frequency
17 600 mV 150 mV, 199.48 to 199.52
199.50 kHz

18 Sensitivity 6V 0.7 V, 99.95 99.93 to 99.97

kHz

19 60 V 7 V, 99.95 kHz 99.93 to 99.97

20  6V 3.4 V, 1 kHz 999.8 to 1000.2

Trigger level Sq. Wave

21  6V 5 V, 1 kHz, DC 49.7 % to 50.3 %

Duty Cycle offset 2.5 V
Sq. Wave

22  6V 3.3 V dc 3.297 to 3.303

DC Volts
23 60 V 33 V dc 32.97 to 33.03

24 600 V 330 V dc 329.7 to 330.3

25 1000 V 1000 V dc 998 to 1002

12
 Digital Multimeter
Performance Tests

Table 2. Accuracy Tests (cont.)

Test
Step Range 5520A Output Display Reading
Function

26 600 mV 50 mV dc 49.8 to 50.2


27 DC Volts 600 mV 330 mV dc 329.6 to 330.4

28  600 Ω 330 Ω (Use 2 wire Comp) 329.1 to 330.9

Ohms
29 6 kΩ 3.3 kΩ (Use 2 wire Comp) 3.292 to 3.308

30 60 kΩ 33 kΩ 32.92 to 33.08

31 600 kΩ 330 kΩ 329.2 to 330.8

32 6 MΩ 3.3 MΩ 3.292 to 3.308

33 50 MΩ 30 MΩ 29.69 to 30.31

34 nS 60 nS 100 MΩ 9.60 to 10.40

Conductance

35  6V 2.0 V dc 1.979 to 2.021

Diode

36  6A 3.0 A, 60 Hz 2.968 to 3.032

AC Amps

37  6A 3.0 A 2.990 to 3.010

DC Amps

38  60 mA 33 mA, 60 Hz 32.65 to 33.35

39 AC Milliamps 400 mA 330 mA, 60 Hz 326.5 to 333.5

40  60 mA 33 mA 32.89 to 33.11

41 DC Milliamp 400 mA 330 mA 329.1 to 330.9

42 600 μA 330 μA, 60 Hz 326.5 to 333.5


43 AC Microamps 6000 μA 3300 μA, 60 Hz 3265 to 3335

44  600 μA 330 μA 328.9 to 331.1

DC Microamps
45 6000 μA 3300 μA 3291 to 3309

46  10 nf Open input 1 0.28 to 0.48

47 Capacitance 100 nf 5 nf 2 4.7 to 5.3

48 100 μf 9.5 μf 9.2 to 9.8

49  1000 V 400 V, 400 Hz 372 to 408

50 Low Pass Filter 1000 V 400 V, 800 Hz 3 226 to 340

51 VDC Peak Min/Max 6V 8 Vpp, 2 kHz Sq. Wave, Min = -1.898 to -2.102
DC offset 2 V Max = 5.896 to 6.104

13
87V MAX
Calibration Information

Table 2. Accuracy Tests (cont.)

Test
Step Range 5520A Output Display Reading
Function

52 mVdc 0 °C -1.0 to 1.0

Temperature 4
53 100 °C 98.0 to 102.0

54 Backlight Press backlight button Backlight comes on

55 Press backlight button Backlight intensifies

56 Press backlight button Backlight goes off

[1] Remove test leads from unit.
[2] Use REL to compensate for internal Meter and lead capacitance (must disconnect test leads from calibrator before pushing REL)
[3] The Meter accuracy is not specified at this input signal frequency with Low-pass filter selected. The display reading shown, checks
that the Low-pass filter is active and follows an expected roll-off curve.
[4] To ensure accurate measurement, the Meter and thermocouple adapter must be at the same temperature. After connecting the
thermocouple adapter to the Meter allow for reading to stabilize before recording display reading.

Calibration Adjustments
Perform the Calibration Adjustment Procedure if the Meter fails any performance
tests. If the adjustment routine is discontinued prior to completion, no changes
are made to the calibration constants that are stored in memory. The following is
an explanation of the pushbutton features and requirements to enter the CAL
mode.
Cal Mode Pushbutton Functions
• The CAL mode will be initiated by holding down the MINMAX pushbutton at
power up and entering a four-digit password.
• The AutoHOLD pushbutton will act as an "ENTER" key and will advance
through the CAL initiation and adjustment procedure steps.
• The pushbuttons are used to select a four-digit password.
During initiation of the CAL mode, a display count will show how many times
calibration constants have been written to memory.
Entering and Displaying the Four-Digit Password
When the Meter was manufactured it was given a default password of 1234. The
following pushbuttons are used to select the password. Each pushbutton
represents the indicated digit.
Yellow = 1 MINMAX = 2 RANGE = 3 AutoHOLD = 4
Backlight = 5 Continuity = 6 REL = 7 Hz = 8
After selecting the password, the user has two choices:
Pressing AutoHOLD will display "" which indicates correct password and
successful entry. You may now proceed with the first calibration step.
Pressing RANGE will display "", which indicates correct password, proceed
to select a new password.
If the password is incorrect, the concluding AutoHOLD or RANGE pushbutton
press will instead cause the Meter to double beep and the display will show
"". The password entry process was unsuccessful and can be tried again or
you may exit this mode by turning the Meter off.

14
 Digital Multimeter
Calibration Adjustments

Changing the Password

To change the password in the Meter:
1. Turn the Meter Rotary Switch from OFF to VAC mode while holding down the
MINMAX pushbutton at the same time. The Meter will display Y .
2. Press the AutoHOLD pushbutton twice. The display should show ""
3. Using the pushbuttons select the old password (do not use AutoHOLD to
save the password)
4. Press the RANGE pushbutton. The Meter should display "_ _ _ _".
5. Use the pushbuttons to select a desired new password.
6. Press AutoHOLD to save the new password.

Restoring the Default Password

If the password has been forgotten, the default password (1234) can be restored
by performing the following:
1. Turn the rotary switch of the Meter to OFF.
2. Remove the bottom case and bottom shield of the Meter.
3. Check the revision number on the PCB. Board revision location is identified in
Figures 3 and 4 below.

15
87V MAX
Calibration Information

If the revision number is 010:

4. Remove the PCB from the top case.
5. Apply power to the PCB by clipping on a dc voltage between 3.5 V and 5 V at
the test points marked “+” and “-” at the edge of the board. See Figure 3.

8 6 2X-2- 3001 REV 010

S11 6
2X-2- 3001 REV 010

S7
7
5

TP1 TP2

3.5 - 5 V

gaq101.emf
Figure 3. Revision 010 Board Layout

6. While shorting across keypad button S7, turn the rotary switch one position
clockwise. See Figure 3.
7. Short across keypad button S11. See Figure 3.
8. Turn the rotary switch one position counterclockwise, back to its original
position.
9. The default password is now restored.
10. Reassemble the Meter before performing adjustments or testing.

16
 Digital Multimeter
Calibration Adjustments

If the revision number is 011 or higher:

4. Apply power to the PCB by clipping on a dc voltage between 3.5 V and 5 V at
the test points marked “+” and “-” at the edge of the board. See Figure 4.

2X-2- 3001 REV 011

6

2X-2- 3001 REV 0 11

3.5 - 5 V

gaq102.emf
Figure 4. Revision 011 Board Layout

5. Turn the rotary switch from OFF to  while holding down MIN MAX at the
same time. The Meter should display CAL.
6. Short across keypad button S11 on the back of the PCB. See Figure 4. The
Meter should beep.
7. Turn the rotary switch one position counterclockwise, back to the OFF
position.
8. The default password is now restored.
9. Reassemble the Meter before performing adjustments or testing.

17
87V MAX
Calibration Information

Other Pushbutton Functions

Table 3 list the button on the Meter and describes what the button does when
pressed after the password has been entered and  pressed.

Table 3. Pushbutton Functions During Cal Mode

Button Cal Mode Description

 Press and hold to test the present function. The measurement is not calibrated so it may be
(yellow) inaccurate. This is normal.

 Press and hold to display the required input level.

 Press and hold to display the frequency of the input signal.

 Press to store the new calibration adjustment value and advance to the next step. This
pushbutton is also used to exit calibration adjustment mode after the calibration adjustment
sequence is complete.

Calibration Adjustment Procedure

In the following procedure, some adjustment steps take longer to execute than
others (10 to 15 Seconds). For some of these steps the Meter gives a double
beep to indicate completion. Not all steps have this feature.
1. Turn the rotary switch of the Meter from OFF to  while holding down
 at the same time. The Meter should display  .
2. Press  once to see the number of calibrations that have been
completed. Press  again to enable password entry. The Meter should
display "".
3. Use the keypad pushbuttons to enter the existing password and press .
The Meter should display Y .
4. Apply the value listed in Table 4 for each calibration step, and/or (optional)
press the  to display the required input signal level and press  to
display the required input signal frequency.
Note
After pressing , wait until the step number advances before
changing the calibrator source or turning the rotary switch of the
Meter. If the reference source input is not within an anticipated range
of the required value, the Meter will emit a double beep and not
allow completion of the step. Set the calibrator to standby prior to
changing the function switch position and or after completing
adjustment of each function. If the calibration adjustment is not
completed correctly, the Meter will not operate correctly.

18
 Digital Multimeter
Calibration Adjustments

Table 4. Calibration Adjustment Steps

Function
Adjustment Step Input Value
(Switch Position)

 C-01 600.0 mV, 60 Hz

(AC Volts) C-02 600.0 mV, 20 kHz
C-03 6.000 V, 60 Hz
C-04 6.000 V, 20 kHz
C-05 60.00 V, 60 Hz
C-06 60.00 V, 20 kHz
C-07 600.0 V, 60 Hz
C-08 600.0 V, 10 kHz

 C-09 6.000 V
(DC Volts) C-10 60.00 V
C-11 600.0 V

 C-12 600.0 mV
(DC Millivolts) C-13 60.00 mV

 C-14 600.0 Ω
(Ohms) C-15 6.000 kΩ
C-16 60.00 kΩ
C-17 600.0 kΩ
C-18 6.000 MΩ
C-19 0.000 Ω
C-20 50.0 MΩ


C-21 3.000 V
(Diode Test)

 C-22 6.000 A, 60 Hz
(Amps) C-23 6.000 A dc

 C-24 60.00 mA, 60 Hz

(Amps) C-25 400.0 mA, 60 Hz
C-26 60.00 mA dc
C-27 400.0 mA dc

 C-28 600.0 μA, 60 Hz

(Microamps) C-29 6000 μA, 60 Hz
C-30 600.0 μA dc
C-31 6000 μA dc

19
87V MAX
Calibration Information

Disassembling the Meter

To disassemble the Meter:
1. Use a Philips screwdriver to remove the six battery-door screws (H1).
2. Lift the battery door (MP1) at the top end of the Meter and remove it from the
case back.
3. Remove three AA batteries.
4. Remove the fuse access door (MP4).
5. Remove the fuse cap (MP5).
6. Use a Philips screwdriver to remove the bottom-case screws (H2) with their
0-rings (H3).
7. Separate the bottom case (MP6) from the top case (MP19).
8. Use a Philips screwdriver to remove the bottom-shield screw (H4).
9. Remove the bottom shield (MP9) from the Meter.
10. Use a Philips screwdriver to remove four PCA input screws (H5).
11. Use a Philips screwdriver to remove six PCA screws (H4) from the board.
12. Remove the PCA from the top case.
13. Remove the top shield (MP13) from the top case.
14. Remove the elastomeric (MP10) from the top shield.
15. Unsnap mask (MP15) from the top shield (MP13).
16. Remove the LCD (DS1) from the top shield.
17. Remove the backlight (MP14) from the top shield.
18. Remove the keypad (MP18) from the top case.
19. Remove the RSOB spacer (MP16) from the top case.
20. Remove the E-clip holding the spring detent (MP17) from the top case.
21. Remove the sprint detent from the top case.
22. Remove the knob (MP20) from the top case.

20
 Digital Multimeter
Reassembling the Meter

Reassembling the Meter

Note
Before reassembling the Meter, read the How to Retain the IP67
Rating section first.
To reassemble the Meter, perform the disassembly steps in reverse order.

How to Retain the IP67 Rating

The following items identify parts of the Meter that can compromise the IP67
rating by leaking if assembly instructions are not followed carefully.
1. Knob: The knob has an overmold seal that fits tight against the top case. This
area must be lubed, and the lube must be spread evenly around the seal
area.
2. E-clip: Make sure it is installed correctly.
3. Keypad: The keypad must be correctly seated, and all six board screws
tightened to 6 in-lbs torque.
4. Bottom case gasket: The gasket must be installed so that the gasket does not
have any twists, bends, waves, etc. The gasket must be completely flat in the
bottom case groove. This can be accomplished by using a modified top case
to push the gasket into position.
5. Battery door gasket: Place over battery compartment walls and push each
corner down as far as they will go. Install battery door screws with 6 in-lbs
torque.
6. Fuse access door: Place onto bottom case and wiggle it to make sure it is
fully seated. Install the battery door screws with 6 in-lbs torque.
7. Case screw o-ring: Torque case screws to 12 in-lbs torque. Verify that the o-
rings are not sticking out of the sides of the screw head.
Note
If you want to ensure your Meter meets the IP67 rating, return the
Meter to a qualified Fluke Service center.

21
87V MAX
Calibration Information

Replacement Parts
Table 5 lists the Meter’s replaceable parts identified in Figure 5.

MP1

H1 (6)

MP2

MP3 (2)

BT1 (3)

MP4 H2 (6)
H3 (6)

MP5
MP6

MP7

MP8 (2)

MP9

H4 (7) H4 (7)

H5 (4)

MP10

F1
F2
MP14
MP11
MP12 DS1
MP13 MP15

MP16

MP17 MP18

MP19

MP20

gaq106.emf
Figure 5. Exploded View of Meter

22
 Digital Multimeter
Replacement Parts

Table 5. Replaceable Parts List

Part
Item Description Qty.
Number

BATTERY, PRIMARY, ZNMNO2, 1.5V, 2.24AH, 15A, LR6, ALKALINE,

BT1 376756 3
AA, 14X50MM, BULK
LCD,4.5 DIGIT, TN, TRANSFLECTIVE, BAR GRAPH, OSPR80,
DS1 2065213 1
FLUKE-87-5

F1 WFUSE,11A,1000V, FAST.406INX1.5IN, BULK 803293 1

F2 WFUSE,.440 A,1000V, FAST.406INX1.5IN, BULK 943121 1

SCREW, M3-0.5 X 6 MM L, PAN HEAD, STEEL, BLACK ZINC, TORX
H1 3861068 6
DRIVE, MACHINE SCREW
SCREW,5-14,.750, PAN, HEXALOBULAR, STEEL, ZINC-BLK
H2 1558745 6
CHROMATE, BLUNT PT, THREAD FORM
O-RING, NITRILE, INT LUBE, SHORE A 70, AS 568A-006, 0.114 ID,
H3 705947 6
0.070 W
SCREW,4-14,.510, PAN, PHILLIPS, STEEL, ZINC-CHROMATE,
H4 853668 7
THREAD CUT
H5 SCREW, M3X0.5,6MM, PAN, PHILLIPS, STEEL, ZINC-CHROMATE 2743764 4
FLUKE-2X-2-2010, BATTERY DOOR, WITHOUT BATTERY
MP1 3321030 1
CONTACTS
FLUKE-2X-II-8007, GASKET, BATT DOOR, FLUKE 27-II AVG AND
MP2 3439087 1
FLUKE 28-II TRMS METERS

MP3 FLUKE 89-4-8012, BATTERY CONTACT, DUAL 666435 2

FLUKE-2X-2-2014, FUSE ACCESS DOOR, 27-2 AVG AND 28-2 TRMS
MP4 3400480 1
MULTIMETER

MP5 FLUKE-2X-2-2015, FUSE CAP 3440546 1

MP6 FLUKE-2X-2-2004, CASE, BOTTOM WITHOUT BATTERY CONTACTS 3320869 1

FLUKE 2X-II-8006, GASKET, TOP CASE, FLUKE-27-II AVG AND
MP7 3439079 1
FLUKE-28-II TRMS METERS

MP8 SHENGUANG-8012, BATTERY CONTACT SHENGUANG 3324731 2

FLUKE-2X-2-8002, BOTTOM SHIELD, FLUKE 27-2 AVG / FLUKE 28-2
MP9 3371942 1
TRMS MULTIMETER
CONNECTOR, ELASTOMERIC, 0.375 HIGH, 0.10 THICK,1.59 LONG,
MP10 3440661 2
BULK

MP11 FLUKE-17X-8001, CONTACT, RSOB 3084560 4

MP12 FLUKE 87-5-2009, HOUSING, RSOB 2073945 1

FLUKE-2X-2-8001, TOP SHIELD, FLUKE 27-2 AVG / FLUKE 28-2
MP13 3371939 1
TRMS MULTIMETER
FLUKE-2X-2-8009, BACKLIGHT, FLUKE 27II / FLUKE 28II
MP14 3471251 1
MULTIMETER

23
87V MAX
Calibration Information

Table 5. Replaceable Parts List (cont.)

Part
Item Description Qty.
Number

MP15 FLUKE-87V-MAX-2501, MASK, LCD (PAD XFER) 87V-MAX 5161521 1

MP16 FLUKE-2X-2-2007, SPACER, RSOB 3320891 1

MP17 FLUKE-2X-2-2008, DETENT, SPRING 3320905 1

MP18 FLUKE-2X-8003, KEYPAD, FLUKE 27-2 AND FLUKE 28-2 3359962 1

MP19 FLUKE-28-2-2502, TOP CASE, PAD XFER (for 28-2) 3320857 1

MP20 FLUKE-2X-2-2009, ROTARY KNOB 3320922 1

Not Shown FLUKE-2X-2-2011, HOLSTER w/Tilt Stand 3321048 1

Not Shown Alligator Clips variable [1] 1 (set of 2)

[1]
Not Shown TEST LEADS variable 1 (set of 2)

Not Shown 80BK-A-8001, TYPE K THERMOCOUPLE ASSEMBLY 2747900 1

Not Shown FLUKE 87-5-8009, TILTSTAND 2074040 1

Not Shown Quick Reference Guide 1 5160944

Not Shown Safety Information 1 5160959

[1] See www.fluke.com for more information about test leads and alligator clips available for your region.

24
 Digital Multimeter
Replacement Parts

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,
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. 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 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. ООО «Флюк СИАЙЭС»
P.O. Box 9090 P.O. Box 1186 125167, г. Москва, Ленинградский
Everett, WA 98206-9090 5602 BD Eindhoven проспект дом 37,
U.S.A. The Netherlands корпус 9, подъезд 4, 1 этаж

5/07

25
87V MAX
Calibration Information

26