Fluke ScopeMeter 123 User manual

Fluke 123/124
Industrial ScopeMeter
Getting started
GB
Sep 2002
© 2002 Fluke Corporation, All rights reserved. Printed in The Netherlands
All product names are trademarks of their respective companies.

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Fluke 123/124 Fluke 123-S/124-S
Fluke 124/124-S
Fluke 123/124 : 1x
Fluke 123-S/124-S : 2x
Figure 1-0. ScopeMeter Test Tool Kit

1
Getting Started
Introduction
This Getting Started Manual provides basic information
on the Fluke 123 and 124 ScopeMeter Test Tools. For
complete operating instructions, refer to the Users
Manual on the accompanying CD-ROM
Contacting a Service Center
To locate a Fluke authorized service center, visit us on
the World Wide Web at: www.fluke.com
or call Fluke using any of the phone numbers listed
below:
[phone] in the U.S.A and Canada
[phone] in Europe
[phone] from other countries.
Safety Information: Read First
The Fluke 123/124 ScopeMeter Test Tool (hereafter
referred to as “Test Tool”) complies with:
•ANSI/ISA S82.01-1994
•EN/IEC61010-1 (1993)
600 V Category III Installations, Pollution Degree 2
•CAN/CSA-C22.2 No.1010.1-92 (including approval)
•UL3111-1 (including approval)
Use the Test Tool only as specified in the Users Manual.
Otherwise, the protection provided by the Test Tool might
be impaired.
A Warning identifies conditions and actions that pose
hazard(s) to the user. A Caution identifies conditions and
actions that may damage the Test Tool.

Fluke 123/124
Getting Started
2
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.
The 230V rating of the PM8907/808 is not for use in
North America. A line plug adapter complying with the
applicable National Requirements may be provided to
alter the blade configurations for a specific country.
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 1-0,
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.
•Do not insert metal objects into connectors.

Getting Started
Preparing for Use
3
•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.
The isolated input connectors have no exposed metal and
are fully insulated to protect against electrical shock.
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.
P
Pr re ep pa ar ri in ng g f fo or r U Us se e
At delivery, the installed rechargeable batteries may be
empty. To reach full charge they must be charged for 5
hours (Fluke 123) or 7 hours (Fluke 124) with the Test
Tool turned off:
•use only the supplied Battery Charger/Power Adapter
model PM8907
•before use check that the PM8907 voltage and
frequency range match the local line power range
•connect the battery charger to the ac outlet
•connect the battery charger to the POWER ADAPTER
input on the right-hand side of the Test Tool.

Fluke 123/124
Getting Started
4
Caution
To prevent decrease of the battery capacity, you
must charge the batteries at least once a year.
Powering/Resetting the Test Tool
Turning power on/off:
The Test Tool powers up in its last
setup configuration.
Resetting the Test Tool to the factory (default) settings:
+Turn power off, then press and hold the
Backlight key and turn on again. You
should hear a double beep.
Changing Backlight and Contrast
To save battery power, the screen can be set to an
economic brightness display when operated on the battery
pack (with no power adapter connected).
Note
Using dimmed display lengthens maximum
battery power operation time.
To change the brightness and contrast of the display in
Fluke 123, press repeatedly:
Dim / Brighten the backlight.
Adjust the Contrast of the display.
To change the brightness and contrast in Fluke 124:
Switch from cursor to display control.
Press LIGHT.
Dim / Brighten the backlight.
Press CONTRAST.
Adjust the Contrast of the display.

Getting Started
Reading the Screen
5
Reading the Screen
The screen is divided into three areas that are indicated in
Figure 1. The areas are:
Reading area (A): Displays the numeric readings. If only
Input A is on, you will see the Input A readings only. If
Input B is on you also will see the Input B readings.
Waveform area (B): Displays the Input A(B) waveform.
The trace identifier (A) is visible on the left of the
waveform. The zero icon (-) identifies the ground level of
the waveform. The bottom line displays the ranges / div
and the power indicator (line or battery).
Note:
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 arrow keys and the ENTER key:
+
Fluke 123
Fluke 124
Figure 1. The Screen Area's

Fluke 123/124
Getting Started
6
Making Menu Selections
Selection of a function in the menu is done as follows:
A menu pops up after operation of, for
instance, the SCOPE MENU key.
Use the arrow keys to highlight the
desired measurement function.
Press ENTER to confirm the selection.
Meter Measurements
Meter mode is used for OHMΩ, CONTinuity, DIODE, and
CAPacitance measurement. Use the Red Shielded Test
Lead at Input A and the Long Black Ground Lead at Input
COM (Common) in the way as shown in Figure 2.
100 Ω
Figure 2. Test lead arrangement for meter
measurements
To measure for instance a resistance, proceed as follows:
Open the INPUT A Menu.
Highlight OHMΩ.
Select Ohms measurement. The
resistance value is displayed in ohms.
Observe that also a bargraph is displayed

Getting Started
Scope Connections and Grounding
7
Scope Connections and Grounding
For single input measurements use the Red Shielded Test
Lead on Input A. For measurements on two different
signals, additionally use the Gray Shielded Test Lead on
Input B.
For low frequency measurements and high signal levels,
use the Black COM (Common) Input as single ground.
Figure 3 shows this.
Figure 3. Grounding with Unshielded Ground Lead.
For measurements at higher frequencies or low levels, use
both Shielded Test Leads with Short Ground Leads
instead of using the COM Input.
Bear in mind that the Short Ground Leads must be
connected to the same potential! Refer to Figure 4.
Figure 4. Grounding with Short Ground Leads
Warning
To avoid electrical shock or fire, use only one
COM (common) connection , or ensure that
all connections to COM are at the same
potential.
Note:
Fluke 124 is supplied with a 10:1 Oscilloscope
Probe. Use of a Probe is recommended when
you measure high frequency signals in circuits
with a high impedance. The Probe such as
supplied matches with the Test Tool without
additional high frequency adjustment.
For grounding of the Probe, use a Short Ground
Lead such as also used with the Shielded Test
Leads.

Fluke 123/124
Getting Started
8
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.
Certain details of the waveform can be made visible by
manually changing amplitude, time base, waveform
position, and triggering. How to do that is explained in the
course of this Guide.
Freezing the Screen
You can freeze the screen (Waveforms and Readings)
with the HOLD/RUN key. This allows you read the screen
while the Test Tool has been disconnected from the
Device to be checked.
Freeze the screen. HOLD appears in
the bottom of the reading screen.
Start the measurement again.
Scope Measurements on Input A and B
Choose frequency measurement (Hz) for Input A:
Open the INPUT A Menu.
Highlight Hz.
Press ENTER to confirm the selection.
Observe that Hz is now the Main Reading. The former
Main Reading has now moved to the smaller Secondary
Reading Position. Figure 5 shows this.

Getting Started
Scope Measurements on Input A and B
9
Then choose Peak-to-Peak Reading for Input B:
Open the INPUT B Menu.
Highlight ON.
Turn INPUT B on.
Highlight PEAK ... . The dots ... behind
PEAK indicate that a submenu will
follow on this selection.
Open the PEAK Submenu.
Highlight PEAK-PEAK.
Press ENTER to confirm the selection.
Now you will see a screen like in Figure 5. The A and B
traces give a graphical representation of the waveforms
applied to Input A and Input B.
Figure 5. Measurements on Input A and Input B

Fluke 123/124
Getting Started
10
Manually Changing the Waveform
Representation
Changing the amplitude:
Enlarge or Reduce the waveform
amplitude; there are separate keys for
Input A and Input B.
Changing the Time Base:
Increase or Decrease the number of
periods.
Positioning the traces:
/Select A MOVE or B MOVE.
Position the selected waveform to the
desired screen position.
Trigger adjustments: Triggering tells the Test Tool when to
begin displaying the waveform. The trigger point on the
waveform is indicated by the Trigger Identifier ( ). Trigger
Level and the Trigger Slope can be adjusted to your
personal taste. This may help to get certain signal details
within the viewing area:
Enables the arrow keys for Trigger
Level and Slope.
Adjust the Trigger Level.
Select Negative / Positive Slope.
Making Cursor measurements
Cursors are present in Fluke 124. Cursors allow you to
make precise digital measurements on live and on saved
waveforms.
Display the cursor key functions:
Select Cursor measurement type:
Measure signal height at one point of
time.

Getting Started
INPUT A Menu / INPUT B Menu
11
Measure signal height difference
between two points of time and
measure time difference between these
two points.
Measure signal height at the cursor
positions and between cursor positions.
Measure rise time or fall time.
Select the cursor to be moved. Use the
blue arrow keys to move the cursors
Depending on cursor measurement
type:
Cursor measurements on trace A or B.
Automatic or manual risetime
measurement on a single channel.
Switch cursor measurements off.
INPUT A Menu / INPUT B Menu
•In the INPUT A Menu you can choose from
many measurement functions. Selection is
done with the arrow keys and activated with F4.
•The function keys F1, F2, and F3 give access
to submenus:
METER A OPTIONS ... : in this menu you can
select meter functions like Coupling,
Smoothing, and Zero Reference.
TREND PLOT: plots the course of readings as
a function of time.
TOUCH HOLD captures and freezes a stable
measurement result. A beep indicates this.
In INPUT B Menu, functions such as in the
INPUT A Menu can be selected.

Fluke 123/124
Getting Started
12
Scope Menu
•SCOPE MENU is used to select A and B
input signal conditions like coupling, and
normal/inverted display.
•The function keys F1, F2, and F3 give access
to submenus:
SCOPE OPTIONS ...
SCOPE MODE
•NORMAL: the scope mode commonly used.
•SINGLE SHOT: can be used to catch single
events.
•ROLL MODE: is useful for monitoring lower
frequency waveforms.
WAVEFORM MODE
•NORMAL: the mode most commonly used.
•SMOOTH: is used to suppress noise.
•ENVELOPE: envelope records all values of
live waveforms. On the screen the resultant
envelope is displayed.
PROBES ...
•PROBE on A: for selection of the correct
probe type when using non-standard probes.
•PROBE on B. Identical to Input A description.
•PROBE AC ADJUST. For adjustment of 10:1
voltage probes other than the probe supplied
with Fluke 124. This is necessary for correct
high frequency measurements.
TRIGGER ...
•INPUT: selection of the trigger source on
which the Test Tool is triggered. EXTernal
triggering is possible via an optically isolated
trigger probe.
•SCREEN UPDATE: FREE RUN gives
automatic screen update even if there are no
triggers. ON TRIG only gives screen update
when valid triggers occur.
•AUTO RANGE: selection of Auto Set on
signals >15 Hz (fast response) or >1 Hz
(slower).

Getting Started
User Options Menu
13
User Options Menu
•USER OPTIONS gives submenus to
configure the Test Tool to your personal taste:
•The function keys F1, F2, and F3 give access
to submenus.
BATTERY REFRESH.. : should be done about
four times a year to keep the batteries in
optimal condition.
LANGUAGE: the language of messages can be
selected in this submenu.
VERSION & CAL ... shows version information.
SAVE / PRINT menu
•SAVE / PRINT lets you save Screens and
Setups to memory, to recall them later
•The function keys F1, F2, and F3 give access
to submenus:
PRINTER SETUP: selection of printer type and
the baud rate.
PRINT SCREEN: The active screen is printed.
DELETE ALL: Deletes all memories at the
same time.

Fluke 123/124
Getting Started
14