Fluke ScopeMeter 123 Manual de usuario

Fluke 123/124

Industrial ScopeMeter

Getting started

Sep 2002

All product names are trademarks of their respective companies.

(2x)

(3x)

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

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:

+1-888-993-5853 in the U.S.A and Canada

+31-40-2675200 in Europe

+1-425-446-5500 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

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

•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.

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

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

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

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

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

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.

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