Fluke 123, 124 User Manual

Fluke 123/124

Industrial ScopeMeter

Users Manual

®

GB
Sep 2002

© 2002 Fluke Corporation. All rights reserved.
All product names are trademarks of their respective companies.

LIMITED WARRANTY & LIMITATION OF LIABILITY

Each Fluke product is warranted to be free from defects in material and workmanship under normal use and service. The warranty period is three years for the
Test Tool and one year for its accessories. The warranty period begins on the date of shipment. Parts, product repairs and services are warranted for 90 days.
This warranty extends only to the original buyer or end-user customer of a Fluke authorized reseller, and does not apply to fuses, disposable batteries or to any
product which, in Fluke's opinion, has been misused, altered, neglected or damaged by accident or abnormal conditions of operation or handling. Fluke warrants
that software will operate substantially in accordance with its functional specifications for 90 days and that it has been properly recorded on non-defective media.
Fluke does not warrant that software will be error free or operate without interruption.

Fluke authorized resellers shall extend this warranty on new and unused products to end-user customers only but have no authority to extend a greater or different
warranty on behalf of Fluke. Warranty support is available if product is purchased through a Fluke authorized sales outlet or Buyer has paid the applicable international
price. Fluke reserves the right to invoice Buyer for importation costs of repair/replacement parts when product purchased in one country is submitted for repair in another
country.

Fluke's warranty obligation is limited, at Fluke's option, to refund of the purchase price, free of charge repair, or replacement of a defective product which is returned to a
Fluke authorized service center within the warranty period.

To obtain warranty service, contact your nearest Fluke authorized service center or send the product, with a description of the difficulty, postage and insurance prepaid
(FOB Destination), to the nearest Fluke authorized service center. Fluke assumes no risk for damage in transit. Following warranty repair, the product will be returned to
Buyer, transportation prepaid (FOB Destination). If Fluke determines that the failure was caused by misuse, alteration, accident or abnormal condition of operation or
handling, Fluke will provide an estimate of repair costs and obtain authorization before commencing the work. Following repair, the product will be returned to the Buyer
transportation prepaid and the Buyer will be billed for the repair and return transportation charges (FOB Shipping Point).

THIS WARRANTY IS BUYER'S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT
NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. FLUKE SHALL NOT BE LIABLE FOR ANY
SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES, INCLUDING LOSS OF DATA, WHETHER ARISING FROM BREACH OF
WARRANTY OR BASED ON CONTRACT, TORT, RELIANCE OR ANY OTHER THEORY.

Since some countries or states do not allow limitation of the term of an implied warranty, or exclusion or limitation of incidental or consequential damages, the limitations
and exclusions of this warranty may not apply to every buyer. If any provision of this Warranty is held invalid or unenforceable by a court 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 USA, or

Fluke Industrial B.V., P.O. Box 90, 7600 AB, Almelo, The Netherlands

SERVICE CENTERS

To locate an authorized service center, visit us on the W orld Wide Web:

http://www.fluke.com

or call Fluke using any of the phone numbers listed below:

[phone] in U.S.A. and Canada

[phone] in Europe

[phone] from other countries

Table of Contents

Chapter Title Page

Declaration of Conformity ....................................................................................................... 1

Unpacking the Test Tool Kit........................................................................................... 2

Safely Using the Test Tool............................................................................................. 4

1 Using The Test Tool..................................................................................................... 7

Goal of this Chapter ....................................................................................................... 7

Powering the Test Tool .................................................................................................. 7

Resetting the Test Tool.................................................................................................. 8

Changing Backlight ........................................................................................................ 9

Reading the Screen ....................................................................................................... 10

Making Selections in a Menu ......................................................................................... 11

Looking at the Measurement Connections..................................................................... 12

Displaying an Unknown Signal with Connect-and View™ ............................................. 13

Making Measurements................................................................................................... 14

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Freezing the Screen....................................................................................................... 16

Holding a Stable Reading .............................................................................................. 16

Making Relative Measurements..................................................................................... 17

Selecting Auto/Manual Ranges...................................................................................... 18

Changing the Graphic Representation on the Screen ................................................... 18

TrendPlotting a Waveform ............................................................................................. 22

Acquiring the Waveform ................................................................................................ 23

Triggering on a Waveform ............................................................................................. 27

Saving and Recalling a Setup and a Screen ................................................................. 32

Making Cursor Measurements....................................................................................... 35

Using the 10:1 Probe for High Frequency Measurements............................................. 38

Using a Printer ............................................................................................................... 39

Using FlukeView

®

Software ........................................................................................... 41

2 Maintaining the Test Tool............................................................................................ 43

About this Chapter ......................................................................................................... 43

Cleaning the Test Tool................................................................................................... 43

Storing the Test Tool...................................................................................................... 43

Charging the Rechargeable Battery Pack...................................................................... 44

Keeping Batteries in Optimal Condition ......................................................................... 45

Replacing and Disposing of the Rechargeable Battery Pack ........................................ 46

Using and Adjusting 10:1 Scope Probes ....................................................................... 47

Calibrating the Test Tool................................................................................................ 49

Parts and Accessories ................................................................................................... 49

3 Tips and Troubleshooting........................................................................................... 53

ii

Contents (continued)

Goal of this Chapter ....................................................................................................... 53

Using the Tilt Stand........................................................................................................ 53

Resetting the Test Tool.................................................................................................. 54

Changing the Information Language.............................................................................. 54

Changing the Display..................................................................................................... 55

Changing Date and Time ............................................................................................... 56

Saving Battery Life ......................................................................................................... 57

Changing the Auto Set Options...................................................................................... 58

Using Proper Grounding ................................................................................................ 59

Solving Printing and Other Communication Errors ........................................................ 60

Battery Testing of Fluke Accessories............................................................................. 60

4 Specifications............................................................................................................... 61

Introduction ....................................................................................................................61

Dual Input Oscilloscope ................................................................................................. 62

Dual Input Meter............................................................................................................. 65

Cursor readout (Fluke 124)............................................................................................ 68

Miscellaneous ................................................................................................................ 69

Environmental ................................................................................................................ 70

Safety ...................................................................................................................... 70

iii

Declaration of Conformity

Declaration of Conformity

for

Fluke 123/124

®

ScopeMeter

Manufacturer

Fluke Industrial B.V.

7602 EA Almelo

The Netherlands

Statement of Conformity

Based on test results using appropriate standards,

the product is in conformity with

Electromagnetic Compatibility Directive 89/336/EEC

Low Voltage Directive 73/23/EEC

test tool

Lelyweg 1

Sample tests

Standards used:

EN 61010.1 (1993)

Safety Requirements for Electrical Equipment for

Measurement, Control, and Laboratory Use

EN 50081-1 (1992)

Electromagnetic Compatibility.

Generic Emission Standard:

EN55022 and EN60555-2

EN 50082-2 (1992)

Electromagnetic Compatibility.

Generic Immunity Standard:

IEC1000-4 -2, -3, -4, -5

The tests have been performed in a

typical configuration.

This Conformity is indicated by the symbol

i.e. “Conformité Européenne”.

,

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Users Manual

Unpacking the Test Tool Kit

The following items are included in your test tool kit. (see
Figure 1.):

# Description Fluke 123 Fluke 123/S Fluke 124 Fluke 124/S

1 Fluke Test Tool Model 123 Model 123 Model 124 Model 124

2 Rechargeable Battery Pack NiCd NiCd NiMH NiMH

3 Power Adapter/Battery Charger ••••

4 Shielded Test Leads with Black Ground Leads ••••

5 Test Lead Black (for Grounding) ••••

6 Hook Clips (red, gray) ••••

7 Alligator Clips (red, gray, black) ••••

8 Banana-to-BNC Adapters (black) • (1x) • (2x) • (1x) • (2x)

9 Getting Started Manual (this book) ••••

10 CD-ROM with Users Manuals ••••

11 Shipment Box ••

12 Optically Isolated RS-232 Adapter/Cable ••

13 FlukeView ScopeMeter Software for Windows ••

14 Hard Carrying Case ••

15 10:1 Voltage Probe ••

When new, the rechargeable battery pack is not
fully charged. See Chapter 2.

Note

2

Unpacking the Test Tool Kit

(2x)

1

9

12

2

3

10

13

4

6

(2x)

14

(3x)

5

*

7

8

*

Fluke 123/ 124 : 1x
Fluke 123-S/ 124-S : 2x

Fluke 123/ 124

11

Fluke 123-S/ 124-S

15

Fluke 124/ 124-S

Figure 1. ScopeMeter Test Tool Kit

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Safely Using the Test Tool

Attention

Carefully read the following safety
information before using the test tool.

Safety Precautions

Specific warning and caution statements, where they
apply, will be found throughout the manual.

A Caution identifies conditions and actions that may
damage the test tool.

A Warning identifies conditions and actions that pose
hazard(s) to the user.

Symbols used on the test tool and in this manual are
explained in the next table.

Warning

To avoid electrical shock, use only Fluke
power supply, Model PM8907 (Power
Adapter/Battery Charger).

See explanation in
manual

Disposal information Earth

Recycling
information

Double Insulation

(Protection Class)

Equal potential
inputs

Conformité
Européenne

UL listed

Warning

Should this test tool be used with AC
coupling selected, or manual operation of
amplitude or time base ranges, the measuring
results displayed on the screen may not be
representative of the total signal. This can
result in the presence of dangerous voltages
of more than 42V peak (30V rms), not being
detected. To guarantee user safety, all signals
should first be measured with DC coupling
selected and in fully automatic mode. This
ensures that the full signal content is
measured.

4

Safely Using the Test Tool

Warning

To avoid electrical shock or fire:

• Use only the power supply, Model PM8907

(Battery Charger / Power Adapter).

• Before use check that the selected/indicated

voltage range on the PM8907 matches the
local line power voltage and frequency.

• For the PM8907/808 universal Battery

Charger/Power Adapter use only line cords
that comply with the local safety regulations.

Note

To accommodate connection to various line
power sockets, the PM8907/808 universal
Battery Charger / Power Adapter is equipped
with a male plug that must be connected to a line
cord appropriate for local use. Since the adapter
is isolated, the line cord does not need to be
equipped with a terminal for connection to
protective ground. Since line cords with a
protective grounding terminal are more
commonly available you might consider using
these anyhow.

Warning

To avoid electrical shock or fire if a Test Tool
input is connected to more than 42 V peak (30
Vrms) or on circuits of more than 4800 VA:

• Use only insulated voltage probes, test leads

and adapters supplied with the Test Tool, or
indicated as suitable for the Fluke 123/124
Test Tool.

• Before use, inspect voltage probes, test leads

and accessories for mechanical damage and
replace when damaged.

• Remove all probes, test leads and

accessories that are not in use.

• Always connect the battery charger first to

the ac outlet before connecting it to the Test
Tool.

• Do not connect the ground wire (Figure 1,

item 5) to voltages higher than 42 V peak (30
Vrms) from earth ground.

• Do not apply input voltages above the rating

of the instrument. Use caution when using
1:1 test leads because the probe tip voltage
will be directly transmitted to the Test Tool.

• Do not use exposed metal BNC or banana

plug connectors.

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• Do not insert metal objects into connectors.

• Always use the Test Tool only in the manner

specified.

Max. Input Voltages

Input A and B directly............................... 600 V CAT III

Input A and B via BB120 .......................... 300 V CAT III

Input A and B via STL120 ........................ 600 V CAT III

Max. Floating Voltage

From any terminal to ground.................... 600 V CAT III

Voltage ratings are given as “working voltage”. They
should be read as Vac-rms (50-60 Hz) for AC sinewave
applications and as Vdc for DC applications.

Overvoltage Category III refers to distribution level and
fixed installation circuits inside a building.

The terms ‘Isolated’ or ‘Electrically floating’ are used in
this manual to indicate a measurement in which the Test
Tool’s Shielded Banana inputs or banana jack is
connected to a voltage different from earth ground.

If Safety Features are Impaired

Use of the Test Tool in a manner not specified may
impair the protection provided by the equipment.

Before use, inspect the test leads for mechanical damage
and replace damaged test leads!

Whenever it is likely that safety has been impaired, the
Test Tool must be turned off and disconnected from the
line power. The matter should then be referred to qualified
personnel. Safety is likely to be impaired if, for example,
the Test Tool fails to perform the intended measurements
or shows visible damage.

The isolated input connectors have no exposed metal and
are fully insulated to protect against electrical shock.

6

Goal of this Chapter

This Chapter provides a step-by-step introduction to the
test tool. The introduction does not cover all of the
capabilities of the test tool but gives basic examples to
show how to use the menus perform basic operations.

Powering the Test Tool

Follow the procedure (step 1 to 3) in Figure 1-1 to power
the test tool from a standard ac outlet. See Chapter 2 for
battery power instructions.

Turn the test tool on.

Chapter 1

Using The Test Tool

The test tool powers up in its last setup configuration.

Figure 1-1. Powering the Test Tool

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Resetting the Test Tool

If you want to restore the test tool settings as delivered from
the factory, do the following:

 Turn the test tool off.

 Press and hold.

 Press and release.

The test tool turns on, and you should hear a double
beep, indicating the Reset was successful.

 Release.

Now look at the display; you will see a screen that looks
like Figure 1-2.
The F4 key of Fluke 123 is used to control the contrast; in
Fluke 124 this key is used to switch the cursors on.

8

Fluke 123

Fluke 124

Figure 1-2. The Screen After Reset

Using The Test Tool

Changing Backlight

1

Changing Backlight

After power-up, the screen has a high bright display.

To save battery power, the screen has an economic
brightness display when operated on the battery pack (no
power adapter connected).

Note

Using dimmed display lengthens maximum
battery power operation time.

To change the brightness of the display in Fluke 123, do
the following:

 Dim the backlight.

 Brighten the backlight again.

In Fluke 124, do the following:

 Press to get access to the display

functions.

 Select LIGHT

 Dim or brighten the backlight.

The high brightness increases when you connect the
power adapter.

.

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Reading the Screen

The screen is divided into three areas: Reading area,
Waveform area, and Menu area. Refer to Figure 1-3
during the following.

Reading area

Because only input A is on, you will see the input A
readings only.

Waveform area

bottom line displays the ranges/div and the power
indicator (line or battery). Because only input A is on, you
will see the input A waveform only.

When battery powered, the battery indicator
informs you about the condition of the battery
from full to empty:

Menu area (C): Displays the menu that provides choices
available through the blue function keys.

When you change a setup, a part of the screen is used to
display the choices. The area displays one or more
menus with choices accessed with the arrow keys:

(A): Displays the numeric readings.

(B): Displays the input A waveform. The

Note

.

.

10

Fluke 123

Fluke 124

Figure 1-3. The Screen Area's

Using The Test Tool

Making Selections in a Menu

1

Making Selections in a Menu

Subsequently follow steps  to  to open a menu and to
choose an item.

 Press the SCOPE MENU key to

open the Scope menu.

Note

Pressing the SCOPE MENU key a second time
closes this menu and resumes normal
measurement. This toggling enables you to
check the menu without destroying your settings.

 Use the blue arrow keys to

highlight the item.

 Press the blue ‘ENTER’ function

key to confirm selection

 Press ‘ENTER’ until you return to

normal mode.

Figure 1-4 shows the basic navigation of the test tool.

Figure 1-4. Basic Navigation

Note

When you do not change an item with the blue
arrow keys, repeatedly pressing
you to step through a menu without changing the
setup of the test tool.

enables

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Looking at the Measurement
Connections

Look at the top of the test tool. The test tool provides two
4-mm safety shielded banana jack inputs (red input A and
gray input B) and a safety 4-mm banana jack input
(COM). (See Figure 1-5.)

Input A

You can always use the red input A for all single input
measurements possible with the test tool.

Input B

For measurements on two different signals you can use
the gray input B together with the red input A .

COM

You can use the black COMmon as single ground for low
frequency measurements, and for Continuity, Ohm (Ω),
Diode, and Capacitance measurements.

Warning

To avoid electrical shock or fire, use only one
COM
all connections to COM
potential.

(common) connection, or ensure that

are at the same

Figure 1-5. Measurement Connections

12

Displaying an Unknown Signal with
Connect-and View™

The Connect-and-View™ function enables hands-off
operation to display complex unknown signals. This
function optimizes the position, range, time base, and
triggering and assures a stable display on nearly all
waveforms. If the signal changes, the setup will track
these changes.

To enable the Connect-and-View™ function, do the
following:

• Connect the red test lead from red input A to the

unknown signal to be measured .

Perform an Auto Set.

Using The Test Tool

Displaying an Unknown Signal with Connect-and View™

1

In the next example, the screen displays “1.411” in large
numbers and “-0.103” in smaller numbers. A scope trace
gives a graphical representation of the waveform.

The trace identifier (A) is visible on left of the waveform
area. The zero icon (
waveform.

-) identifies the ground level of the

Figure 1-6. The Screen After an Auto Set

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Making Measurements

The reading area displays the numeric readings of the
chosen measurements on the waveform that is applied to
the input jack.

• First connect the red shielded test lead from input A,

and the gray shielded test lead from input B to the
signals to be measured. Connect the short ground
leads to the same ground potential. (See Figure 1-7.)

Note

Ω

For Ohm (
measurements, use the red shielded test lead
from input A and the black unshielded ground
lead from COM (common). (See Figure 1-7.)

To choose a frequency measurement for Input A, do the
following:

 Open the INPUT A menu.

), continuity, diode, and capacitance

Figure 1-7. Measurement Setup

 Highlight Hz.

 Select Hz.

Observe that Hz is now the main reading. The former
main reading has now moved to the smaller secondary
reading position. (See Figure 1-8.)

14

Using The Test Tool

Making Measurements

1

To choose also a Peak-to-Peak measurement for Input B,
do the following:











Open the INPUT B menu.

Highlight ON.

Turn Input B on. Observe that the
highlight jumps to the present
main measurement.

Highlight PEAK...

Open the PEAK submenu.





Now, you will see a screen like Figure 1-8.

Figure 1-8. Hz and Vpp as Main Readings

Highlight PEAK-PEAK.

Accept the pk-pk measurement.

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Freezing the Screen

You can freeze the screen (all readings and waveforms)
at any time.

 Freeze the screen. HOLD

appears at the bottom of the
reading area.

 Resume your measurement.

Holding a Stable Reading

The Touch Hold® function captures and freezes the next
stable measurement result. A beep indicates that a stable
measurement has been made.

Use the following procedure for the Touch Hold function:

 Open the INPUT A menu.

 TOUCH HOLD OFF appears on

bottom of the screen.

 Measure the signal.



BEEP)))

Because no special keys accompany the Touch Hold
function, you can use this function for hands-free
measurements.

Wait until an audible beep: now
you have a stable display.

The screen continues to update
with valid readings (and beeps)
as longs as you maintain the
measurement connections.

 Return to normal measurement.

16

Making Relative Measurements

Zero Reference displays the present measurement result
with respect to the defined value. This feature is useful
when you need to monitor the measured value in relation
to a known good value.

 Open the INPUT A menu.

 Open the METER A OPTIONS

submenu.



(2x)

Jump to ZERO REF.

 Highlight ON.

 Activate the relative

measurement.

Using The Test Tool

Making Relative Measurements

Figure 1-9. Making a Relative Measurement

The relative measurement now becomes the main
reading, while the former main measurement has moved
to the smaller secondary reading position. (See Figure
1-9.)

1

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Selecting Auto/Manual Ranges

Press to automatically adjust the position, range,
time base, and triggering. This assures a stable display
on nearly all waveforms. The bottom line shows the range,
the time base for both inputs, and the trigger information.

Press
MANUAL appears at the bottom of the reading area.

a second time to select the manual range.

Changing the Graphic Representation
on the Screen

From Auto range, you can use the light-gray rocker keys
to change the graphic representation on the screen
manually.

Changing the Amplitude

 Enlarge the waveform.

 Reduce the waveform.

Available settings are from 5 mV/div to 500 V/div when
using the test leads.

Observe that AUTO at the bottom of the reading area
disappears to indicate that the continuous Auto Set
function is not valid anymore.

Changing the Time Base

 Increase the number of periods.

 Decrease the number of periods.

Available settings are from 20 ns/div (Fluke 123) or 10
ns/div (Fluke 124) to 5 s/div in normal mode.

18

Positioning the Waveform on the Screen

Considerable flexibility is offered in moving the
waveform(s) around the screen.

 Press until you have left any open

menu. Observe that the following
main menu appears on bottom of
the screen.

 Choose A MOVE.

 Position the waveform of INPUT

A on the screen.

Waveform positioning is demonstrated in Figure 1-10.

Using The Test Tool

Changing the Graphic Representation on the Screen

1

Observe that the trigger identifier (
on the screen.

) moves horizontally

Figure 1-10. Positioning the Waveform

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Smoothing the Waveform

To smooth the waveform, do the following:

 Open the SCOPE INPUTS menu.

 Open the SCOPE OPTIONS

submenu.

 Jump to WAVEFORM MODE.

 Highlight SMOOTH.

 Accept waveform smooth.

You can use waveform smooth to suppress noise without
loss of bandwidth. Waveform samples with and without
smoothing are shown in Figure 1-11.

Figure 1-11. Smoothing the Waveform

20

Displaying the Envelope of a Waveform

The test tool records the envelope (minimum and
maximum) of the live waveforms A and B.

Repeat the first three actions of ‘Smoothing the
Waveform’, and then do the following:

 Highlight ENVELOPE.

 Start monitoring the envelope of

the waveform.

The screen shows the resultant envelope in a gray
waveform. See Figure 1-12.

You can use ENVELOPE to observe variations in time or
amplitude of input waveforms over a longer period of time.

Using The Test Tool

Changing the Graphic Representation on the Screen

Figure 1-12. Displaying the Envelope of a Waveform

1

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TrendPlotting a Waveform

The TrendPlot™ function plots the digital readings as a
function of time. Date and time stamp shows the time of
the most recent change in a MIN or MAX reading.

Starting a TrendPlot™ function

 Open the INPUT A menu.

 Start TRENDPLOT.

The test tool records the minimum (MIN) reading as the
main (upper displayed) measurement of input A. The date
and time stamp appear below the MIN reading. (See
Figure 1-13.)

The test tool also continuously logs all readings to
memory and displays these as graphs. Automatic vertical
scaling and horizontal time compression resizes the
TrendPlot to fit on the screen. The TrendPlot is built up on
the screen from left to right until the screen is full. The
automatic time scaling then compresses this information
to about half the screen.

Figure 1-13. TrendPlot Reading

Note

When a new minimum value is detected , a beep
occurs and the new minimum is displayed.

22

Using The Test Tool

Acquiring the Waveform

1

Changing the TrendPlot Reading

To toggle the TrendPlot reading between MIN (minimum),
MAX (maximum), and AVERAGE, do the following:

 Change MIN into MAX reading.

 Change MAX into AVG reading.

Note that the date and time stamp now updates
continuously to indicate the most recent change in a
reading.

Turning Off the TrendPlot Display

 Turn TrendPlot off again.

Acquiring the Waveform

Making a Single Acquisition

To catch single events, you can perform a single shot.
(One time screen update.) To set up the test tool for a
single shot on the input A waveform, do the following:

• Connect the probe to the signal to be measured.

 Open the SCOPE INPUTS menu.

 Open the SCOPE OPTIONS

submenu.

 Highlight SINGLE SHOT.



(2x)

Accept the set up for a Single
Shot.

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 Wait appears on bottom of the

screen to indicate that the test
tool is waiting for a trigger.

 Run appears on bottom of the

screen when the single
acquisition is triggered.

 Hold appears on bottom of the

screen when the single
acquisition has been completed.

The test tool will now have a screen like Figure 1-14.

To perform a next single acquisition, do the following:

Wait for another single
acquisition trigger.

Figure 1-14. Making a Single Acquisition

24

Recording Slow Signals over a Long Period of
Time

The roll mode function supplies a visual log of waveform
activity and is especially useful when you measure lower
frequency waveforms.

 Open the SCOPE INPUTS menu.

 Open the SCOPE OPTIONS

submenu.

Using The Test Tool

Acquiring the Waveform

1

 Highlight ROLL MODE.



The waveform moves accross the screen from right to left
like a normal chart recorder. Observe that during
recording no measurements are made. (See Figure 1-15.)

(2x)

Start Recording.

Figure 1-15. Recording Waveforms over Longer

Period of Time

 Freeze Recording.

Observe that the measurement values are only displayed

after is pressed. (See figure 1-15.)

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A

Users Manual

Selecting AC-Coupling

Use AC-coupling when you wish to observe a small AC
signal that rides on a DC signal.

 Open the SCOPE INPUTS menu.

 Highlight AC.



(4x)

Accept AC-coupling for INPUT A.

Reversing the Polarity of the Displayed
Waveform

To invert the input A waveform, do the following:

 Open the SCOPE INPUTS menu.

 Select NORMAL (of INPUT A).

 Highlight INVERT.



For example, a negative-going waveform is displayed as
positive-going, providing a more meaningful viewing
perspective in some cases. An inverted display is
identified by trace identifier
area.

(3x)

Accept inverted waveform
display.

on left of the waveform

26

Using The Test Tool

Triggering on a Waveform

1

Triggering on a Waveform

Triggering tells the test tool when to begin displaying the
waveform. You can select which input signal should be
used, on which edge this should occur, and you can
define the condition for a new update of the waveform.
Finally you can tell the test tool to trigger on video signals.

The bottom line of the waveform area identifies the trigger
parameters being used. Trigger icons on the screen
indicate the trigger level and slope. (See Figure 1-16.)

Setting Trigger Level and Slope

 Perform an AUTO SET.

For quick operation, use the AUTO SET key to
automatically trigger on nearly all signals. To optimize
trigger level and slope manually, do the following:

 Press until you have left any open

menu.

 Enable the arrow keys for Trigger

Level and Slope adjustment.

 Adjust the Trigger Level

continuously. Observe the trigger
icon on the second time division
line indicates the trigger level.

 Trigger on either positive Slope or

negative Slope of the chosen
waveform.

Figure 1-16. Screen with all Trigger Information

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Selecting the Trigger Parameters

To trigger on the input A waveform, with automatic screen
update, and to configure the auto range triggering for
waveforms from 1 Hz, do the following:

 Open the SCOPE INPUTS menu.

 Open the TRIGGER submenu.

 Highlight Input ‘A’.

 Select Input ‘A’.

 Highlight FREE RUN.

 Select FREE RUN.

 Highlight >1 Hz

 Accept all trigger selections and

return to normal measurement.

Note

Setting the automatic triggering to >1Hz will slow
down the auto range.

TRIG:A appears in gray text on bottom of the screen
when no trigger is found.

Note

Gray text in a menu or button bar indicates that
the function is disabled or the status is not valid.

28

Using The Test Tool

Triggering on a Waveform

1

Isolated Triggering

Use the optically isolated trigger probe (ITP120, optional)
to trigger on an external source, and to isolate the test tool
from a trigger waveform. See Figure 1-17.

To choose the isolated trigger probe, select ‘EXT’ in point
 of the previous example. Trigger level is fixed and is
TTL compatible.

Figure 1-17. Isolated Triggering

Triggering on Video Signals

• Apply an interlaced video signal to the red input A.

To trigger on a random video line, continue from point 
of the previous example as follows:

 Highlight VIDEO on A.

 Open the VIDEO TRIGGER

submenu.

 Highlight PAL.

 Select PAL.

 Highlight RANDOM.

 Select RANDOM.

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



Trigger level and slope are now fixed. (See Figure 1-18.)
Positive video is indicated as a “+” icon on bottom of the
screen.

Highlight POSITIVE.

Accept the video trigger
selections .

Figure 1-18. Measuring Video Signals

30

Using The Test Tool

Triggering on a Waveform

1

Triggering on a Specific Video Line

To view a specific video line in more detail you can select
the line number. To measure on a selected video line,
continue from point  of the previous example as follows:

 Highlight SELECT

 Select SELECT





Highlight POSITIVE.

Accept the video trigger
selections .

Pressing selects the line number function.

To choose line 135, do the following:

 Enable video line selection.

 Select number 135.

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Saving and Recalling a Setup and a
Screen

You can save Screens and Setups to memory, and recall
them again for later use. Fluke 123 has 10 memories
while Fluke 124 has 20 memories. In each memory you
can save a screen and the related settings.

Saving Screens with Belonging Setups

To save a screen and setups in e.g. memory location 7,
do the following:

 Open the SAVE/PRINT menu.

Observe that SAVE ... is already
highlighted and that the screen is
frozen until you leave the
SAVE/PRINT menu again.

Note that free memory locations are indicated by an open
square () in front of the memory number.

 Highlight memory location 7.

 Save the actual screen and

settings.

The actual screen and settings are saved in memory
location 7 and the instrument returns to normal signal
acquisition again.

 Open the SAVE ... submenu.

32

Using The Test Tool

Saving and Recalling a Setup and a Screen

1

Recalling Screens and Setups

To recall a screen and setups, do the following:

 Open the SAVE/PRINT menu.

 Highlight RECALL ...

 Open the RECALL ... submenu.

Already filled memory locations
are indicated with a closed
square ().

 Highlight memory 7.

 View the saved screen and

belonging settings.

Observe that the recalled waveform is displayed and that
HOLD appears on the screen. From this point you can
use cursors for analysis or you can print the recalled
screen. The instrument returns to signal acquisition if you
press the HOLD/RUN key. The settings such as stored in
memory location 7 are used then.

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Deleting Screens and Associated Setups

To delete all or just 1 screen + setups, do the following:

 Open the SAVE/PRINT menu.

If you want to clear all memory locations, press F3
DELETE ALL. If you want to clear just 1 memory location
(e.g. memory 7), do the following:

 Highlight DELETE ...

 Open the DELETE ... submenu.

Filled memory locations are
indicated with a closed square.

 Highlight memory 7.

Observe that the settings and
date/time of creation of the
waveform in memory 7 are
displayed now.

 The contents of memory 7 are

deleted and the instrument
returns to normal signal
acquisition.

34

Using The Test Tool

Making Cursor Measurements

1

Making Cursor Measurements

Fluke 124 has cursors. Cursors allow you to make precise
digital measurements on waveforms. This can be done on
live waveforms and on saved waveforms.

Using Horizontal Cursors on a Waveform

To use the cursors for a voltage measurement, do the
following:



From Scope mode, display the
Cursor Key functions.

 Press to highlight . Observe

that two horizontal cursor lines
are displayed.

 Highlight the upper cursor.

 Move the upper cursor to the

desired position on the screen.

 Highlight the lower cursor.

⑥ Move the lower cursor to the

desired position on the screen.

Note

Even when the key labels are not displayed at
the bottom of the screen, you can still use the
arrow keys.

Figure 1-19. Voltage Measurement with Cursors

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The readout shows the voltage difference between the
two cursors and the voltages at the cursors in relation to
the zero icon (-). See Figure 1-19).

Use horizontal cursors to measure the amplitude, high
and low value, or overshoot of a waveform.

Using Vertical Cursors on a Waveform

To use the cursors for a time measurement, do the
following:

 From Scope mode, display the

Cursor Key functions.

 Press to highlight . Observe

that two vertical cursors are
displayed. Markers (-) identify the
point where the cursors cross the
waveform.

 If necessary, choose the trace A

or B.

 Highlight the left cursor.

 Move the left cursor to the

desired position on the waveform.

⑥ Highlight the right cursor.

⑦ Move the right cursor to the

desired position on the waveform.

Figure 1-20. Time Measurement with Cursors

36

Using The Test Tool

Making Cursor Measurements

1

The readout shows the time difference ‘t’ between the
cursors and the voltage difference between the two
markers (See Figure 1-20).
The signal frequency is displayed behind 1/t if exactly 1
signal period is between the cursors.

Making Rise Time Measurements

To measure rise time, do the following:

 From Scope mode, display the

Cursor Key functions.

 Press to highlight (rise time).

Observe that two horizontal
cursors are displayed.

 If only one trace is displayed,

select MANUAL or AUTO. AUTO
automatically does steps 4 to 6.
For multiple traces select the
required trace A or B.

 Move the upper cursor to 100%

of the trace height. A marker is
shown at 90%.

 Highlight the other cursor.

⑥ Move the lower cursor to 0% of

the trace height. A marker is
shown at 10%.

Figure 1-21. Risetime Measurement with Cursors

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The reading now shows the risetime from 10%-90% of the
trace amplitude and the voltage at the cursors in relation
to the zero icon (-). See Figure 1-21.

⑦ Turn off the cursors.

Using the 10:1 Probe for High Frequency
Measurements.

Fluke 124 is supplied with a model VP40 10:1 Probe. Use
of this Probe is recommended when you measure high
frequency signals in circuits with a high impedance. The
loading of the circuit by a 10:1 Probe is much lower than
that of a 1:1 Shielded Test Lead.

The following aspects must be observed when using a
10:1 Probe:

Probe Attenuation.

The Probe attenuates the signal 10 times. Proceed as
follows to adapt the Test Tool’s voltage readout to this
attenuation. The example below is for a Probe connected
to input B:

 Open the Scope menu.

 Open the Probes menu.

 Select PROBE on B ...

 Press ENTER

 Select 10:1 V

38

Using The Test Tool

Using a Printer

1

⑥ Press ENTER to confirm the

selection.

Observe that the 10 times attenuation of the Probe is
compensated in the voltage readout.

Probe Adjustment.

The Probe of model VP40 such as supplied with the Test
Tool is always adapted correctly to its inputs: high
frequency adjustment is not necessary.
Other 10:1 Probes however must be adjusted for optimal
High Frequency performance. How to adjust these Probes
is explained in Chapter 2 under ‘Using and Adjusting 10:1
Scope Probes’.

Using a Printer

To print a (graphic) hard copy of the present screen, you
need to use one of the following:

 The Optically Isolated RS-232 Adapter/Cable

(PM9080) to connect a serial printer to the OPTICAL
PORT of the test tool. See Figure 1-22.

 The Print Adapter Cable (PAC91, optional) to connect

a parallel printer to the OPTICAL PORT of the test
tool. See Figure 1-23.

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Figure 1-22. Connecting a Serial Printer

This example covers how to set up the test tool to print on
a HP Deskjet printer with a baudrate of 9600 baud:

 Open the SAVE&PRINT menu.

Observe that the screen is
freezed.

 Open the PRINTER SETUP

submenu.

 Highlight DESKJET.

 Select DESKJET.

Figure 1-23. Connecting a Parallel Printer

40

 Highlight 9600.

 Accept the print selections.

Using The Test Tool

Using FlukeView® Software

1

Now you are ready to print.

To print a live screen, do the following:

 Open the SAVE&PRINT menu.

 Start printing.

To print a recalled screen, do the following:

 Start printing.

A message that indicates that the test tool is printing
appears on bottom of the screen.

Using FlukeView® Software

To connect the test tool to a computer for using the
FlukeView software for Windows
following:

 Use the Optically Isolated RS-232 Adapter/Cable

(PM9080) to connect a computer to the OPTICAL
PORT of the test tool. See Figure 1-24.

For all information relating to installing and using the
FlukeView ScopeMeter software, see the SW90W Users
Manual.

A Software & Cable Carrying Case Kit is optional available
as model number SCC 120.

®

(SW90W), do the

41

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Figure 1-24. Connecting a Computer

42

Chapter 2

Maintaining the Test Tool

About this Chapter

This chapter covers basic maintenance procedures that
can be performed by the user. For complete service,
disassembly, repair, and calibration information, see the
Service Manual. You will find the part number of the
Service Manual in the section ‘Parts and Accessories’ in
this manual.

Cleaning the Test Tool

Clean the test tool with a damp cloth and a mild soap to
avoid abrasion of text on the test tool. Do not use
abrasives, solvents, or alcohol.

Storing the Test Tool

If you are storing the test tool for an extended period of
time, charge the rechargeable battery pack before storing.
It is not necessary to remove the battery pack.

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Charging the Rechargeable Battery Pack

At delivery, the batteries may be empty and must be
charged (test tool is off) to fill them completely. Charging
time is 5 hours for Fluke 123 (Ni-Cd battery) and 7 hours
for Fluke 124 (Ni-MH battery). When fully charged, the
batteries typically provide 4 hours of use in Fluke 123 and
6 hours in Fluke 124 at full brightness. Operating time is
extended at normal brightness.

When battery powered, the battery indicator on the
bottom of the screen informs you about the condition of
the battery. The battery symbols are:
battery symbol
minutes of operating time left.

Use the setup as shown in Figure 2-1 to charge the battery
pack and power the instrument.

Turn the test tool off to charge the batteries more quickly.

The test tool uses a trickle charge for the
batteries, so no damage can occur if you leave it
charging for long periods, e.g., through the
weekend.

indicates that there are typically five

Note

. The

Figure 2-1. Charging the Battery Pack

44

Maintaining the Test Tool

Keeping Batteries in Optimal Condition

2

Keeping Batteries in Optimal Condition

Always operate the test tool on batteries until an -icon
appears on the bottom line of the screen. This indicates
that the battery level is low and that the batteries need to
be recharged.

Frequent charging of the batteries when they are not
completely empty can reduce the operating time for the
test tool.

You can refresh the battery pack at any time. This battery
refresh cycle fully discharges and charges the battery pack.
A complete refresh cycle takes about 14 hours (Fluke 123
with Ni-Cd battery) or 19 hours (Fluke 124 with Ni-MH
battery) and should be done at least four times a year.

Note

Be sure not to disconnect the Power Adapter
during the complete refresh cycle. Doing so will
interrupt the refresh cycle.

To refresh the battery pack, do the following:

• Be sure that the test tool is line powered.

 Open the USER OPTIONS menu.

 Open the BATTERY REFRESH

submenu.

 Highlight START REFRESH.

 Start the refresh cycle.

Note

After start of the refresh cycle, the screen will be
black.The backlight is on during discharging
within the refresh cycle.

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Replacing and Disposing of the
Rechargeable Battery Pack

Warning

To avoid electrical shock, remove the test
leads and probes before replacing the battery
pack.

Note

This instrument contains Ni-Cd or Ni-MH
batteries. Do not dispose of this battery pack with
other solid waste. Used batteries should be
disposed of by a qualified recycler or hazardous
materials handler. Contact your authorized
FLUKE Service Center for recycling information.

To replace the battery pack, do the following: (See Figure
2-2.)

1. Disconnect the test leads and probes both at the
source and at the test tool.

2. Power the test tool with the Power Adapter.This
ensures information stored in memories will not be lost.

3. Locate the battery access cover on the bottom rear.
Loosen the screw with a flat-blade screwdriver.

46

Figure 2-2. Replacing the Battery Pack

4. Lift the battery access cover away from the test tool.

5. Take the battery pack out of the battery compartment.

6. Remove the battery plug from the connector.

7. Install a new battery pack.

Maintaining the Test Tool

Using and Adjusting 10:1 Scope Probes

2

Note

Ensure that the battery pack is placed in the
battery compartment as shown in Figure 2-2.
For Fluke 123 use the Fluke BP120 Ni-Cd
(standard) or BP130 Ni-MH (extended operating
time) battery pack.
For Fluke 124 it is recommended to use the
Fluke BP130 Ni-MH battery pack .

8. Reinstall the battery cover and secure the screw.

Using and Adjusting 10:1 Scope Probes

Note

The 10:1 voltage probe that is supplied with
Fluke 124 is always adjusted correctly to the
Test Tool and needs no further adjustment.

You need to adjust other scope probes (e.g. VPS100,
optional) for optimal response.

Warning

To avoid electrical shock use the BB120
Banana-to-BNC adapter (delivered with the
test tool) to connect a 10:1 scope probe to
the input of the test tool.

• Connect the 10:1 scope probe from the gray input B

jack to the red input A jack. Use the red 4-mm
banana adapter (delivered with the probe) and the
banana-to-BNC adapter (BB120). See Figure 2-3.

BB120

To adjust probes, do the following:

Figure 2-3. Adjusting Scope Probes

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 Open the SCOPE INPUTS menu.

 Open the PROBES submenu.

 Highlight PROBE AC ADJUST.

 Open the PROBE AC ADJUST

submenu.

 Highlight ADJUST 10:1 PROBE.

 A square wave appears on the

screen.

 Adjust the trimmer screw in the

probe housing to give an
optimum square wave.

 Return to normal mode.

48

Maintaining the Test Tool

Calibrating the Test Tool

2

Calibrating the Test Tool

You can ask for the model identity (version and calibration
data) at any time. To display the identity, do the following:

 Open the USER OPTIONS menu.

 Open the

VERSION&CALIBRATION
submenu.

The screen gives you information about the model
number with software version, the calibration number with
latest calibration date, and the latest battery refresh date.

 Return to normal mode.

Recalibration must be carried out by qualified personnel
only. Contact your local Fluke representative for
recalibration.

Parts and Accessories

Service Manual

Ordering Number: 4822 872 05389

Standard Accessories

The next tables list the user-replaceable parts for the
various test tool models. To order replacement parts,
contact your nearest service center.

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Standard Accessories (cont)

Item Ordering Code

Ni-Cd Battery Pack (installed in Fluke 123, 123/S) BP120

Ni-MH Battery Pack (installed in Fluke 124, 124/S) BP130

Power Adapter/Battery Charger, available models:

Universal Europe 230V, 50Hz
North America 120V, 60Hz
United Kingdom 240V, 50Hz
Japan 100V, 60Hz
Australia 240V, 50Hz
Universal 115V/230V

*

UL listing applies to PM8907/808 with UL listed line plug adapter
for North America. The 230 V rating of the PM8907/808 is not for
use in North America. For other countries, a line plug adapter
complying with the applicable National Requirements must be
used.

Set of two Shielded Test Leads (Red and Gray), designed for use only
with the Fluke ScopeMeter 120 series test tool.

Set contains the following replaceable part:
Ground Lead with Alligator Clip (Black)

*

PM8907/801
PM8907/803
PM8907/804
PM8907/806
PM8907/807
PM8907/808

STL120

5322 320 11354

50

Maintaining the Test Tool

Parts and Accessories

Standard Accessories (cont)

Item Ordering Code

Test Lead for Grounding (Black) TL75

Set of two Hook Clips (Red and Gray) HC120

Set of three Alligator Clips (Red, Gray, and Black) AC120

One Banana-to-BNC Adapter (Black). Supplied with: Fluke 123, 124 BB120 (Set of two)

Two Banana-to-BNC Adapters (Black). Supplied with: Fluke 123/S, 124/S BB120 (set of two)

Getting Started Manual (English, German, French, Spanish)

Getting Started Manual (French, Spanish, Portuguese, Italian, Dutch,
Danish, Norwegian, Swedish, Finnish, Russian)

Getting Started Manual (English, Chinese, Japanese, Korean)

CD-ROM with Users Manual (All languages)

4822 872 30711

4822 872 30712

4822 872 30713

4022 240 12370

2

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Optional Accessories

Item Ordering Code

Software & Cable Carrying Case Kit (Supplied with Fluke 123/S, 124/S)

Set contains the following parts:

Optically Isolated RS-232 Adapter/Cable

Hard Carrying Case. Supplied with Fluke 123/S, 124/S

FlukeView

®

ScopeMeter® Software for Windows

®

10:1 Scope Probe VP40. Supplied with Fluke 124, 124/S VPS40 (Set of two)

Optically Isolated RS-232 Adapter/Cable. PM9080

Hard Carrying Case. C120

Compact Soft Case C125

Soft Carrying Case C789

Isolated Trigger Probe ITP120

Print Adapter Cable for Parallel Printers PAC91

SCC 120

PM9080

C120

SW90W

52

Goal of this Chapter

This Chapter gives you information and tips on how you
can make the best use of the test tool.

Using the Tilt Stand

The test tool is equipped with a tilt stand, allowing viewing
from an angle. You can also use the tilt stand to hang the
test tool at a convenient viewing position. Simply tilt the
stand and hang the test tool. Typical positions are shown
in Figure 3-1.

Chapter 3

Tips and Troubleshooting

Figure 3-1. Using the Tilt Stand

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Resetting the Test Tool

Perform a Master Reset to make sure that your test tool is
in the initial settings condition.

 Turn the test tool off.

 Press and hold.

 Press and release.

The test tool turns on, and you should hear a double
beep, indicating the Reset was successful.

 Release.

Changing the Information Language

When you operate the test tool, messages appear on the
bottom of the screen. These messages are always
displayed in a box, and can in some test tool versions be
displayed in more languages. In different combinations,
you can choose from 10 languages: English, French,
German, Italian, Spanish, Portuguese, Dutch, Japanese,
Korean, and Chinese.

If you want to change the language of the messages into
e.g. Italian, do the following:



Open the USER OPTIONS menu.

 Open the LANGUAGE SELECT

submenu.

 Highlight ITALIANO.

 Accept ITALIANO (Italian) as

language.

54

Tips and Troubleshooting

Changing the Display

3

Changing the Display

Adjusting the Screen Contrast in Fluke 123

 From the main menu, choose

CONTRAST.

 Adjust the contrast of the screen.

Adjusting the Screen Contrast in Fluke 124

 Switch from cursor control to

display control.

 From the display control menu,

choose CONTRAST

 Adjust the contrast of the screen.

Note

The new contrast adjustment of the screen is
saved in memory until a new adjustment is
made.

Setting the Grid Display

To choose a dotted grid, do the following:

 Open the USER OPTIONS menu.

 Highlight GRID TYPE.

 Open the GRID TYPE submenu.

 Choose DOTS.

 Accept the new grid display.

Use LINES when you need a cross hatch pattern based
on the horizontal time and vertical divisions on the screen.
Use DOTS when you need vertical and horizontal division
dots as added reference points to the screen.

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Changing Date and Time

The test tool has a date and time clock. To change the
date to (e.g.) 20 June, 2002, do the following:

 Open USER OPTIONS menu.

 Highlight DATE ADJUST.

 Open DATE ADJUST submenu.

 Choose 2002.

 Jump to MONTH.

 Jump to DAY.

 Choose 20.

 Jump to FORMAT.

 Choose DD/MM/YY.

Accept the new date.

You can change the time in a similar way by opening the
TIME ADJUST submenu. (steps

 and .)

 Choose 06.

56

Tips and Troubleshooting

Saving Battery Life

3

Saving Battery Life

When operated on the battery pack (no Power Adapter
connected), the test tool conserves power by shuting itself
down. If you have not pressed a key for at least 30 minutes,
the test tool turns itself off automatically.

Note

If the Power Adapter is connected, there is no
automatic power shutdown.

Although automatic power shutdown will not occur if
TrendPlot is on, the backlight will dim. Recording will
continue even if the battery pack is low, and retention of
memories is not jeopardized.

Setting the Power Down Timer

To extend battery life, the power shutdown time is set to
30 minutes after the last key press. To set the power
shutdown to five minutes, do the following:

 Open the USER OPTIONS menu.

 Highlight POWER DOWN ...

 Open the submenu.

 Highlight AFTER 5 MIN.

 Accept the new power down time.

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Changing the Auto Set Options

Normally, the Auto Set function captures waveforms from
15 Hz.

To configure Auto Set for waveforms from 1 Hz with
unchanged input coupling, do the following:

Note

Setting the Auto Set adjust to 1 Hz will slow
down the Auto Set response.

 Open the User Options menu.

 Highlight AUTOSET ADJUST...

 Open the AUTOSET ADJUST

submenu.

 Highlight SIGNALS > 1 Hz.

 Highlight UNCHANGED.

 Accept the new Auto Set

configuration.

 Select COUPLING.

58

Using Proper Grounding

Incorrect grounding can cause various problems. This
Section gives you guidelines for proper grounding.

 Use the short ground lead(s) when measuring DC or

AC signals on input A and input B. (See Figure 3-2.)

Warning

To avoid electrical shock or fire, use only one
COM (common) connection
all connections to COM
potential.

 Use the unshielded black ground lead to COM

(common) for Ohm (Ω), Continuity, Diode, and
Capacitance measurements. (See Figure 3-3.)

Using the unshielded ground lead is also possible for
single or dual input measurements for waveforms with
a frequency up to 1 MHz. This may add some hum or
noise to the waveform display due to the unshielded
ground lead.

, or ensure that

are at the same

Tips and Troubleshooting

Using Proper Grounding

Figure 3-2. Grounding with Short Ground Lead

3

Figure 3-3. Grounding with Unshielded Ground Lead

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Solving Printing and Other
Communication Errors

RS-232 communication may cause problems. When
experiencing communication problems, try the following
remedies:

 Make sure that the interface cable is connected to the

correct port on the printer or computer. If necessary
use the 9 pin to 25 pin adapter or gender changer.

 Make sure that you have selected the correct printer

type. (To select printer type, see Chapter 1.)

 Make sure that the baud rate matches with the printer

or computer. (To set the baud rate, see Chapter 1.)

 Reset the RS-232 parameters to defaults.

Battery Testing of Fluke Accessories

When using battery operated Fluke accessories, always
check the battery condition of the accessory first on a
Fluke multimeter .

60

Chapter 4

Specifications

Introduction

Performance Characteristics

FLUKE guarantees the properties expressed in numerical
values with the stated tolerance. Specified non-tolerance
numerical values indicate those that could be nominally
expected from the mean of a range of identical
ScopeMeter test tools.

Environmental Data

The environmental data mentioned in this manual are
based on the results of the manufacturer’s verification
procedures.

Safety Characteristics

The test tool has been designed and tested in accordance
with Standards ANSI/ISA S82.01-1994, EN 61010.1
(1993) (IEC 1010-1), CAN/CSA-C22.2 No.1010.1-92
(including approval), UL3111-1 (including approval) Safety
Requirements for Electrical Equipment for Measurement,
Control, and Laboratory Use.

This manual contains information and warnings that must
be followed by the user to ensure safe operation and to
keep the instrument in a safe condition. Use of this
equipment in a manner not specified by the manufacturer
may impair protection provided by the equipment.

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Dual Input Oscilloscope

Vertical

Frequency Response

DC Coupled:

excluding probes and test leads (via BB120):................

Fluke 123: DC to 20 MHz (-3 dB)
Fluke 124: DC to 40 MHz (-3 dB)

with STL120 1:1 shielded test leads: .............................

DC to 12.5 MHz (-3 dB)

DC to 20 MHz (-6 dB)

with VP40 10:1 probe:....................................................

Fluke 123 (optional accessory): DC to 20 MHz (-3 dB)

Fluke 124 (standard accessory): DC to 40 MHz (-3 dB)

AC Coupled (LF roll off):

excluding probes and test leads............. <10 Hz (-3 dB)

with STL120 ............................................ <10 Hz (-3dB)

with 10 MΩ 10:1 Probe ............................ <1 Hz (-3 dB)

Rise Time

excluding probes, test leads (Fluke 123) .........<17.5 ns

excluding probes, test leads (Fluke 124) .........<8.75 ns

Input Impedance

excluding probes and test leads................ 1 MΩ//12 pF

with BB120 ................................................ 1 MΩ//20 pF

with STL120............................................. 1 MΩ//225 pF

with VP40 10:1 Probe............................. 5 MΩ//15.5 pF

Sensitivity............................................5 mV to 500 V/div

Display Modes .............................................. A, -A, B, -B

Max. Input Voltage A and B

direct, with test leads, or with VP40 Probe..... 600 Vrms

with BB120 .....................................................300 Vrms

(For detailed specifications, see “Safety”, Figs. 4-1/4-2)

Max. Floating Voltage

from any terminal to ground ...........................600 Vrms

up to 400 Hz

Resolution................................................................ 8 bit

Vertical Accuracy .......................±(1% + 0.05 range/div)

Max. Vertical Move .......................................±4 divisions

62

Specifications

Dual Input Oscilloscope

4

Horizontal

Scope Modes...................................Normal, Single, Roll

Ranges

Normal:

equivalent sampling (Fluke 123) ..... 20 ns to 500 ns/div

equivalent sampling (Fluke 124) ..... 10 ns to 500 ns/div

real time sampling ................................... 1 µs to 5 s/div

Single (real time) ..................................... 1 µs to 5 s/div

Roll (real time)......................................... 1s to 60 s/div

Sampling Rate (for both channels simultaneously)

Equivalent sampling (repetitive signals)........................

up to 1.25 GS/s

Real time sampling:

1 µs to 5 ms/div .......................................... 25 MS/s

10 ms to 60 s/div .......................................... 5 MS/s

Time Base Accuracy

Equivalent sampling .................. ±(0.4% +0.04 time/div)

Real time sampling.................... ±(0.1% +0.04 time/div)

Glitch Detection..................≥40 ns @ 20 ns to 5 ms/div

≥200 ns @ 10 ms to 60 s/div

Glitch detection is always active.

Horizontal Move ...........................................10 divisions

Trigger point can be positioned anywhere across the
screen.

Trigger

Screen Update ..............................Free Run, On Trigger

Source ..............................................................A, B, EXT

EXTernal via optically isolated trigger probe ITP120

(optional accessory)

Sensitivity A and B (Fluke 123)

@ DC to 5 MHz.............................0.5 divisions or 5 mV

@ 25 MHz.................................................. 1.5 divisions

@ 40 MHz..................................................... 4 divisions

Sensitivity A and B (Fluke 124)

@ DC to 5 MHz.............................0.5 divisions or 5 mV

@ 40 MHz.................................................. 1.5 divisions

@ 60 MHz..................................................... 4 divisions

Slope................................................... Positive, Negative

Video on A.......................... interlaced video signals only

Modes................................................Lines, Line Select

Standards .......................... PAL, NTSC, PAL+, SECAM

Polarity.............................................. Positive, Negative

Sensitivity .........................................0.6 divisions sync.

63

Fluke 123/124

Users Manual

Advanced Scope Functions

Display Modes

Normal........Captures up to 40 ns glitches and displays

analog-like persistence waveform.

Smooth.......Suppresses noise from a waveform.

Envelope ....Records and displays the minimum and

maximum of waveforms over time.

Auto Set

Continuous fully automatic adjustment of amplitude,
time base, trigger levels, trigger gap, and hold-off.
Manual override by user adjustment of amplitude, time
base, or trigger level.

64

Specifications

Dual Input Meter

4

Dual Input Meter

The accuracy of all measurements is within ± (% of
reading + number of counts) from 18 °C to 28 °C.
Add 0.1x (specific accuracy) for each °C below 18 °C or
above 28 °C. For voltage measurements with 10:1 probe,
add probe uncertainty +1%. More than one waveform
period must be visible on the sceen.

Input A and Input B

DC Voltage (VDC)

Ranges........................ 500 mV, 5V, 50V, 500V, 1250V

Accuracy ..........................................±(0.5% +5 counts)

Normal Mode Rejection (SMR)...........................>60 dB

@ 50 or 60 Hz ±1%

Common Mode Rejection (CMRR)........>100 dB @ DC

>60 dB @ 50, 60, or 400 Hz

Full Scale Reading .................................... 5000 counts

True RMS Voltages (VAC and VAC+DC)

Ranges........................ 500 mV, 5V, 50V, 500V, 1250V

Accuracy for 5 to 100% of range

DC coupled:

DC to 60 Hz (VAC+DC) ...............±(1% +10 counts)

1 Hz to 60 Hz (VAC) ....................±(1% +10 counts)

AC or DC coupled:

60 Hz to 20 kHz ........................ ±(2.5% +15 counts)

20 kHz to 1 MHz .......................... ±(5% +20 counts)

1 MHz to 5 MHz.........................±(10% +25 counts)

5 MHz to 12.5 MHz ................... ±(30% +25 counts)

5 MHz to 20 MHz (excl. test leads or probes) ..........

±(30% +25 counts)

AC coupled with 1:1 (shielded) test leads

60 Hz (6 Hz with 10:1 probe) ......................... -1.5%

50 Hz (5 Hz with 10:1 probe) ............................ -2%

33 Hz (3.3 Hz with 10:1 probe) ......................... -5%

10 Hz (1 Hz with 10:1 probe) .......................... -30%

DC Rejection (only VAC) ................................... >50 dB

Common Mode Rejection (CMRR)....... >100 dB @ DC

>60 dB @ 50, 60, or 400 Hz

Full Scale Reading ....................................5000 counts

The reading is independent of any signal crest factor.

Peak

Modes.........................Max peak, Min peak, or pk-to-pk

Ranges ........................500 mV, 5V, 50V, 500V, 1250V

Accuracy:

Max peak or Min peak........................ 5% of full scale

Peak-to-Peak ................................... 10% of full scale

Full Scale Reading ......................................500 counts

Frequency (Hz)

Ranges ................ 1 Hz, 10 Hz, 100 Hz, 1 kHz, 10 kHz,

100 kHz,1 MHz, 10 MHz, and 50 MHz (Fluke 123) or

70MHz (Fluke 124)

Frequency Range in Continuous Autoset......................

15 Hz (1 Hz) to 50 MHz

65

Fluke 123/124

Users Manual

Accuracy:

@1 Hz to 1 MHz............................ ±(0.5% +2 counts)

@1 to 10 MHz ...............................±(1.0% +2 counts)

@10 to 50 MHz (Fluke 123) ..........±(2.5% +2 counts)

@10 to 70 MHz (Fluke 124) ..........±(2.5% +2 counts)

(50 MHz in Autorange)

Full Scale Reading..................................10 000 counts

Duty Cycle (DUTY)

Range...........................................................2% to 98%

Frequency Range in Continuous Autoset .....................

15 Hz (1 Hz) to 30 MHz

Accuracy (Logic or Pulse waveforms):

@1Hz to 1 MHz............................. ±(0.5% +2 counts)

@1 MHz to 10 MHz....................... ±(1.0% +2 counts)

Pulse Width (PULSE)

Frequency Range in Continuous Autoset .....................

15 Hz (1 Hz) to 30 MHz
Accuracy (Logic or Pulse waveforms):

@1 Hz to 1 MHz............................ ±(0.5% +2 counts)

@1 MHz to 10 MHz....................... ±(1.0% +2 counts)

Full Scale Reading ..................................1000 counts

Amperes (AMP) ....................with optional current probe

Ranges......... same as VDC, VAC, VAC+DC, or PEAK

Scale Factor... 1 mV/A, 10 mV/A, 100 mV/A, and 1 V/A

Accuracy ......... same as VDC, VAC, VAC+DC, or PEAK

(add current probe uncertainty)

Temperature (TEMP) ... with optional temperature probe

Range........................................200 °C/div (200 °F/div)

Scale Factor ............................... 1 mV/°C and 1 mV/°F

Accuracy........... as VDC (add temp. probe uncertainty)

Decibel (dB)

0 dBV........................................................................ 1V

0 dBm (600Ω /50Ω) ............................................. 1 mW

referenced to 600Ω or 50Ω

dB on ...................................... VDC, VAC, or VAC+DC

Full Scale Reading .................................... 1000 counts

Crest Factor (CREST)

Range.................................................................1 to 10

Accuracy............................................... ±(5% +1 count)

Full Scale Reading ...................................... 100 counts

Phase

Modes...................................................... A to B, B to A

Range.................................................0 to 359 degrees

Accuracy up to 1 MHz ...................................2 degrees

Accuracy 1 MHz to 5 MHz.............................5 degrees

Resolution .......................................................1 degree

66

Specifications

Dual Input Meter

4

Input A

Ohm (ΩΩΩΩ)

Ranges....... 500Ω, 5 kΩ, 50 kΩ, 500 kΩ, 5 MΩ, 30 MΩ

Accuracy: .........................................±(0.6% +5 counts)

Full Scale Reading:

500Ω to 5 MΩ ......................................... 5000 counts

30 MΩ..................................................... 3000 counts

Measurement Current ......................... 0.5 mA to 50 nA

decreases with increasing ranges

Open Circuit Voltage ...............................................<4V

Continuity (CONT)

Beep..................................... <(30Ω ±5Ω) in 50Ω range

Measurement Current ........................................0.5 mA

Detection of shorts of ......................................... ≥1 ms

Diode

Measurement Voltage:

@0.5 mA ...........................................................>2.8V

@open circuit .......................................................<4V

Accuracy .............................................±(2% +5 counts)

Measurement Current ........................................0.5 mA

Polarity ..................................... + on input A, - on COM

Capacitance (CAP)

Ranges................. 50 nF, 500 nF, 5 µF, 50 µF, 500 µF

Accuracy ...........................................±(2% +10 counts)

Full Scale Reading .................................... 5000 counts

Measurement Current...............................5 µA to 0.5 mA

increases with increasing ranges
Dual slope integrating measurement with parasitic
serial and parallel resistance cancellation.

67

Fluke 123/124

Users Manual

Advanced Meter Functions

Zero Set

Set actual value to reference

Fast/Normal/Smooth

Meter settling time Fast: 1s @ 1 µs to 10 ms/div.
Meter settling time Normal: 2s @ 1 µs to 10 ms/div.
Meter settling time Smooth: 10s @ 1 µs to 10 ms/div.

Touch Hold (on A)

Captures and freezes a stable measurement result.
Beeps when stable. Touch Hold works on the main
meter reading, with thresholds of 1 Vpp for AC signals
and 100 mV for DC signals.

TrendPlot

Graphs meter readings of the Min and Max values from
15 s/div (120 seconds) to 2 days/div (16 days) with time
and date stamp. Automatic vertical scaling and time
compression.
Displays the actual and Minimum, Maximum, or average
(AVG) reading.

Fixed Decimal Point

Possible by using attenuation keys.

Cursor readout (Fluke 124)

Sources:

A, B

Single Vertical Line:

Average, Min and Max Readout
Average, Min, Max and Time from Start of Readout (in
ROLL mode; instrument in HOLD)
Min, Max and Time from Start of Readout (in
TRENDPLOT mode; instrument in HOLD)

Dual Vertical Lines:

Peak-Peak, Time Distance and Reciprocal Time
Distance Readout
Average, Min, Max and Time Distance Readout (in
ROLL mode; instrument in HOLD)

Dual Horizontal Lines:

High, Low and Peak-Peak Readout

Rise or Fall Time:

Transition Time, 0%-Level and 100%-Level Readout
(Manual or Auto Leveling; Auto Leveling only possible in
Single Channel Mode)

Accuracy:

As Oscilloscope Accuracy

68

Specifications

Miscellaneous

4

Miscellaneous

Display

Size .................................... 72 x 72 mm (2.83 x 2.83 in)

Resolution ............................................240 x 240 pixels

Waveform Display:

Vertical .............................................8 div of 20 pixels

Horizontal ......................................9.6 div of 25 pixels

Backlight.................. Cold Cathode Fluorescent (CCFL)

Power

External: ............................. via Power Adapter PM8907

Input Voltage ......................................... 10 to 21V DC

Power .........................................................5W typical

Input Connector.......................................... 5 mm jack

Fluke 123 (Internal Battery Pack BP120):

Battery Power.....................Rechargeable Ni-Cd 4.8V

Operating Time............... 4 hours with bright backlight

4.25 hours with dimmed backlight

Charging Time.......................5 hours with test tool off

40 hours with test tool on

9 .. 14 hours with refresh cycle

Fluke 124 (Internal Battery Pack BP130):

Battery Power....................Rechargeable Ni-MH 4.8V

Operating Time............... 6 hours with bright backlight

6.30 hours with dimmed backlight

Charging Time.......................7 hours with test tool off

60 hours with test tool on

12 .. 19 hours with refresh cycle

Allowable ambient temperature:

during charging ................. 0 to 45 °C (32 to 113 °F)

Memory

Number of Screen + Setup Memories (Fluke 123).... 10

Number of Screen + Setup Memories (Fluke 124).... 20

Mechanical

Size....................... 232 x 115 x 50 mm (9.1 x 4.5 x 2 in)

Weight ................................................... 1.2 kg (2.5 lbs)

including battery pack

Interface ..................................RS-232, optically isolated

To Printer..........................supports Epson FX, LQ, and

HP Deskjet
Serial via PM9080 (optically isolated RS-232
adapter/cable, optional).
Parallel via PAC91 (optically isolated print adapter
cable, optional).

To PC ....................... Dump and load settings and data

Serial via PM9080 (optically isolated RS-232
adapter/cable, optional), using SW90W (FlukeView
software for Windows®).

®

, Laserjet®, and Postscript

®

69

Fluke 123/124

Users Manual

Environmental

Environmental ....................... MIL-PRF-28800F, Class 2

Temperature

Operating ................................0 to 50 °C (32 to 122 °F)

Storage................................. -20 to 60 °C (-4 to 140 °F)

Humidity

Operating:

@0 to 10 °C (32 to 50 °F)................. noncondensing

@10 to 30 °C (50 to 86 °F)................................ 95%

@30 to 40 °C (86 to 104 °F)................................ 75%

@40 to 50 °C (104 to 122 °F).............................. 45%

Storage:

@-20 to 60 °C (-4 to 140 °F) .............. noncondensing

Altitude

Operating ...................................... 4.5 km (15 000 feet)

Max. Input and Floating Voltage 600 Vrms upto 2 km,
linearly derating to 400 Vrms @ 4.5 km

Storage........................................... 12 km (40 000 feet)

Vibration (sinusoidal) ....................................................

........... MIL28800F, class 2, 3.8.4.2, 4.5.5.3.1: Max. 3g

Shock ...............................................................................

......... MIL28800F, class 2, 3.8.5.1, 4.5.5.4.1: Max. 30g

Electromagnetic Compatibility (EMC)

Emission.........................................EN 50081-1 (1992):

EN55022 and EN60555-2

Immunity.........................................EN 50082-2 (1992):

IEC1000-4-2, -3, -4, -5

(See also Tables 1 to 3)

Enclosure Protection ..........................IP51, ref: IEC529

Safety

Designed for measurements on 600 Vrms Category III
Installations, Pollution Degree 2, per:

• ANSI/ISA S82.01-1994

• EN61010-1 (1993) (IEC1010-1)

• CAN/CSA-C22.2 No.1010.1-92 (including approval)

• UL3111-1 (including approval)

Max. Input Voltage Input A and B

Direct on input or with leads .......................... 600 Vrms

for derating, see Figure 4-1.

With Banana-to BNC Adapter BB120............. 300 Vrms

for derating, see Figure 4-1.

Max. Floating Voltage

from any terminal to ground ...........................600 Vrms

up to 400 Hz

70

Specifications

Safety

4

Figure 4-1. Max. Input Voltage v.s. Frequency for

BB120 and STL120

Figure 4-2. Max. Input Voltage v.s. Frequency for VP40

10:1 Voltage Probe

71

Fluke 123/124

Users Manual

The Fluke 123/124, including standard accessories, conforms with the EEC directive 89/336 for EMC immunity, as defined
by IEC1000-4-3, with the addition of the following tables.

Trace disturbance with STL120

Table 1

No visible disturbance E= 3 V/m E= 10 V/m

Frequency range 10 kHz to 27 MHz
Frequency range 27 MHz to 1 GHz

Disturbance less than 10% of full scale E= 3 V/m E= 10 V/m

Frequency range 10 kHz to 27 MHz
Frequency range 27 MHz to 1 GHz

(-): no visible disturbance

Test tool ranges not specified in tables 1 and 2 may have a disturbance of more than 10% of full scale.

100 mV/div to 500 V/div
100 mV/div to 500 V/div

Table 2

20 mV/div to 50 mV/div
10 mV/div to 20 mV/div

500 mV/div to 500 V/div
100 mV/div to 500 V/div

100 mV/div to 200 mV/div

-

72

Specifications

Safety

Multimeter disturbance:

• VDC, VAC, and VAC+DC with STL120 and short ground lead.

• OHM, CONT, DIODE, and CAP with STL120, and black test lead to COM.

Table 3

Disturbance less than 1% of full scale E= 3 V/m E= 10 V/m

Frequency range 10 kHz to 27 MHz

VDC, VAC, VAC+DC
OHM, CONT, DIODE
CAP

Frequency range 27 MHz to 1 GHz

VDC, VAC, VAC+DC
OHM, CONT, DIODE
CAP

Test tool ranges not specified in table 3 may have a disturbance of more than 10% of full scale.

500 mV to 1250V

500Ω to 30 MΩ

50 nF to 500 µF

500 mV to 1250V

500Ω to 30 MΩ

50 nF to 500 µF

500 mV to 1250V

500Ω to 30 MΩ

50 nF to 500 µF

500 mV to 1250V

500Ω to 30 MΩ

50 nF to 500 µF

4

73

Index

—A—

AC coupling, 4
AC120 Alligator Clips, 51
Accessories, 49
AC-Coupling, 26
Acquiring the Waveform, 23
Acquisition Modes, 63
Adjusting Scope Probes, 47
Advanced Meter Functions, 68
Advanced Scope Functions, 64
Alligator Clips, 51
Altitude, 70
Amperes Measurement, 66
Amplitude, 18
Auto Set, 64
Auto Set Configuration, 58

Automatic Power Shutdown, 57
Avoid Electrical Shock, 12

—B—

Backlight, 9
Banana Jack Inputs, 12
Banana-to-BNC Adapter, 51
Bandwidth, 62
Battery Charger, 50
Battery Disposing, 46
Battery Indicator, 10
Battery Life, 57
Battery Pack, 2, 44, 50
Battery Power, 69
Battery Refresh Date, 49
Battery Replacing, 46
BB120 Adapters, 51

Blue Function Keys, 10
BP120 Battery Pack, 47, 50
BP130 Battery Pack, 47, 50
Bright Display, 9

—C—

C120 Hard Case, 52
C125 Compact Soft Case, 52
C789 Soft Case, 52
Calibrating the Test Tool, 49
Capacitance, 14, 59, 67
Case, 52
Changing the Amplitude, 18
Changing the Display, 55
Changing the Graphic

Representation, 18

Changing the Time Base, 18

75

Fluke 123/124

Users Manual

Charge Time, 69
Charger, 50
Charging, 44
Cleaning, 43
Common, 12
Communication Errors, 60
Compact Soft Case, 52
Computer, 41
Connect-and-View function, 13
Connecting a Computer, 42
Continuity, 14, 59, 67
Contrast, 55
Crest Factor, 66
Current Measurement, 66
Cursors, 35, 68

—D—

Date, 56
DC Voltage (VDC), 65
Decibel (dB), 66
Declaration of Conformity, 1
Deleting Screens and Setups, 34
Dimmed Display, 9
Diode, 14, 59, 67
Display, 55, 69
Disposing Batteries, 46
Duty Cycle, 66

—E—

Earth Ground, 6
Electrical Shock, 5
Electrically Floating, 6
Electromagnetic Compatibility, 1,

70
Emission, 70
Envelope, 64
Envelope of a Waveform, 21
Environmental, 70
Environmental Data, 61

—F—

Fast/Smooth, 68
Fixed Decimal Point, 68
FlukeView, 41, 52
Freeze Recording, 25
Freezing the Screen, 16
Frequency (Hz), 65
Frequency Response, 62
Function Keys, 10

—G—

Glitch Detection, 63
Graphic Representation, 18

Gray Text, 28
Grey INPUT B, 12
Grid Display, 55
ground, 6
Ground Test Lead, 51
Grounding Problems, 59

—H—

Hands-free Measurements, 16
Hard Carrying Case, 52
HC120 Hook Clips, 51
High Frequency Measurements, 38
Holding a Stable Reading, 16
Hook Clips, 51
Horizontal Cursors, 35
Horizontal Move, 63
Humidity, 70
Hz, 65

—I—

Immunity, 70
Input A, 12
Input B, 12
Input Impedance, 62
insulated

isolated, 5

76

Index (continued)

Isolated, 6
Isolated Trigger Probe, 29, 52
Isolated Triggering, 29
ITP120, 29, 52

—L—

Level, 27

—M—

Maintenance, 43
Making Measurements, 14
Manual, 51
Manual Override, 64
Max. Floating Voltage, 6, 62, 70
Max. Input Voltage, 62, 70
Maximum (MAX) Reading, 23
Measurement Connections, 12
Measurements, 14
Mechanical, 69
mechanical damage, 5
Memory, 69
Menu Area, 10
Meter A Measurement, 14
Meter B Measurement, 15
Min Max Reading, 23
Minimum (MIN) Reading, 22
Multimeter Disturbance, 73

—N—

Ni-Cd Battery Pack, 2, 44, 50
Ni-MH Battery Pack, 2, 44

—O—

Ohm (Ω), 14, 59, 67
Operating Time, 69
Optical Interface, 39, 41, 69

—P—

PAC91, 52
Parallel Print Cable, 52
Parts, 49
Peak, 65
Performance Characteristics, 61
Phase, 66
PM8907, 50
PM8918, 47
PM8918 Probe, 52, 62
PM9080, 39, 41, 52
Polarity, 26
Positioning the Waveform, 19
Power Adapter, 50, 57
Power Down Timer, 57
Powering the Test Tool, 7
Print Cable, 52

Printing, 39
Printing Errors, 60
Probe, 47, 52, 62
Probe 10

1, 38
Probe Adjustment, 39
Probe Attenuation, 38
Pulse Width, 66

—R—

Reading Area, 10, 14
Reading the Screen, 10
Recalibrating, 49
Recalling, 32
Recalling Screens and Setups, 33
Record a Waveform, 21
Recording Slow Signals, 25
Red INPUT A, 12
Refreshing the Batteries, 49
Relative Measurements, 17
Replaceable Parts, 49
Replacing Batteries, 46
Resetting, 54
Resetting the Test Tool, 8
Reversing the Polarity, 26
Rise Time, 62
Rise Time Measurements, 37
Roll Mode Function, 25

77

Fluke 123/124

Users Manual

RS-232 Adapter/Cable, 39, 41, 52
RS-232 Communication Errors, 60

—S—

Safety, 70
Safety Characteristics, 61
Safety Precautions, 4
Safety Requirements, 1
Sampling Rate, 63
Saving, 32
Saving Screens and Setups, 32
SCC 120, 41, 52
Scope Modes, 63
Scope Probes, 52
Screen Contrast, 55
Selecting Trigger Parameters, 28
Sensitivity, 62
Serial Printer, 40
Service Manual, 49
Shielded Test Leads, 50
Shock, 70
Single Shot, 23
Slope, 27, 63
Slow Signals, 25
Smooth, 20, 64
Soft Carrying Case, 52
Software, 52

Software Version, 49
Specifications, 61
Stable Reading, 16
Stand, 53
STL120 Test Leads, 50
Storing, 43
SW90W Software, 41, 52

—T—

Temperature Measurement, 66
Temperature, Environmental, 70
Test Leads, 50
Tilt Stand, 53
Time, 56
Time Base, 18
Time Base Accuracy, 63
Time Base Ranges, 63
Touch Hold
Trace Disturbance, 72
TrendPlot™ function, 68
TrendPlot™ Function, 22
Trigger, 63
Trigger Icons, 27
Trigger Level, 27
Trigger Parameters, 28
Trigger Sensitivity, 63
Triggering, 27

®

function, 16, 68

—U—

Unpacking, 2
User Manual, 51
Using a Printer, 39
Using FlukeView Software, 41

—V—

Vertical Accuracy, 62
Vertical Cursors, 36
Vibration, 70
Video Line, 31
Video on A, 63
Video Signals, 29
VP40 Probe, 38

—W—

Waveform Area, 10

—Z—

Zero Reference, 17

78