Fluke 190M User Manual

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190M Series Medical ScopeMeter

Fluke Biomedical 190M-2, 190M-4

Users Manual

FBC-0029 April 2012, Rev. 1

SCO

CURSOR

METER

RECORDER

SCOPE

METER

CURSOR

REPLAY

ZOOM

REPLAY

LIMITED WARRANTY & LIMITATION OF LIABILITY

Each Fluke Biomedical 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 Biomedical authorized reseller, and does not apply to fuses, disposable batteries or to any product which, in Fluke Biomedical's opinion, has been misused, altered, neglected or damaged by accident or abnormal conditions of operation or handling. Fluke Biomedical 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 BioMedical does not warrant that software will be error free or operate without interruption.

Fluke Biomedical 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 Biomedical. Warranty support is available if product is purchased through a Fluke Biomedical authorized sales outlet or Buyer has paid the applicable international price. Fluke Biomedical 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 Biomedical's warranty obligation is limited, at Fluke Biomedical's option, to refund of the purchase price, free of charge repair, or replacement of a defective product which is returned to a Fluke Biomedical authorized service center within the warranty period.

To obtain warranty service, contact your nearest Fluke Biomedical authorized service center or send the product, with a description of the difficulty, postage and insurance prepaid (FOB Destination), to the nearest Fluke Biomedical authorized service center. Fluke Biomedical assumes no risk for damage in transit. Following warranty repair, the product will be returned to Buyer, transportation prepaid (FOB Destination).If Fluke Biomedical determines that the failure was caused by misuse, alteration, accident or abnormal condition of operation or handling, Fluke Biomedical 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 BIOMEDICAL 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

The 190M Series Medical ScopeMeter is manufactured in Romania for Fluke Biomedical, 6920 Seaway Blvd., Everett, WA, U.S.A.

SERVICE CENTERS

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

http://www.flukebiomedical.com

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

+1-800-850-4608 in U.S.A. and Canada

+31-40-2675314 in Europe

Title Page

Safety 1

Using the Scope and Meter ................................................................................................. 11

Introduction .................................................................................................................. 1

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

Safety Information: Read First ..................................................................................... 4

If Safety Features are Impaired .................................................................................... 7

Safe Use of Li-ion Battery Pack ................................................................................... 8

About this Chapter ..................................................................................................... 11

Powering the Test Tool .............................................................................................. 11

Resetting the Test Tool .............................................................................................. 12

Navigating a Menu ..................................................................................................... 13

Hiding Key Labels and Menus ................................................................................... 14

Key Illumination .......................................................................................................... 14

190M Series Medical ScopeMeter

Users Manual

Input Connections ...................................................................................................... 15

Making Input Connections ......................................................................................... 15

Adjusting the Probe Type Settings ............................................................................. 16

Selecting an Input Channel ........................................................................................ 17

Displaying an Unknown Signal with Connect-and-View™.......................................... 18

Making Automatic Scope Measurements................................................................... 19

Freezing the Screen .................................................................................................. 20

Using Average, Persistence and Glitch Capture ........................................................ 21

Acquiring Waveforms ................................................................................................. 25

Pass - Fail Testing ..................................................................................................... 32

Analyzing Waveforms ................................................................................................ 33

Making Automatic Meter Measurements (Model 190M-4) ......................................... 33

Making Multimeter Measurements (Model 190M-2) ................................................... 36

Using The Recorder Functions .......................................................................................... 41

About this Chapter ..................................................................................................... 41

Opening the Recorder Main Menu ............................................................................. 41

Plotting Measurements Over Time (TrendPlot™) ...................................................... 42

Recording Scope Waveforms In Deep Memory (Scope Record) ............................... 45

Analyzing a TrendPlot or Scope Record .................................................................... 48

Using Replay, Zoom and Cursors ...................................................................................... 49

About this Chapter ..................................................................................................... 49

Replaying the 100 Most Recent Scope Screens ........................................................ 49

Zooming in on a Waveform ........................................................................................ 52

Making Cursor Measurements ................................................................................... 53

Contents

Triggering on Waveforms ................................................................................................... 57

About this Chapter ..................................................................................................... 57

Setting Trigger Level and Slope ................................................................................. 58

Using Trigger Delay or Pre-trigger ............................................................................. 59

Automatic Trigger Options ......................................................................................... 60

Triggering on Edges ................................................................................................... 61

Triggering on External Waveforms (Model 190M-2) .................................................. 64

Triggering on Video Signals ....................................................................................... 65

Triggering on Pulses .................................................................................................. 67

Using Memory and PC ......................................................................................................... 71

About this Chapter ..................................................................................................... 71

Using the USB Ports .................................................................................................. 71

Saving and Recalling ................................................................................................. 72

Using FlukeView® ScopeMeter Software ................................................................... 80

Tips 81

About this Chapter ..................................................................................................... 81

Using the Standard Accessories ................................................................................ 81

Using the Independently Floating Isolated Inputs ...................................................... 83

Using the Tilt Stand .................................................................................................... 86

Kensington®-lock ........................................................................................................ 87

Attaching the Hanging Strap ...................................................................................... 87

Resetting the Test Tool .............................................................................................. 88

Suppressing Key Labels and Menus .......................................................................... 88

Changing the Information Language .......................................................................... 89

Adjusting the Contrast and Brightness ....................................................................... 89

Changing Date and Time ........................................................................................... 90

(continued)

iii

190M Series Medical ScopeMeter

Users Manual

Saving Battery Life ..................................................................................................... 90

Changing the Auto Set Options ................................................................................. 92

Maintaining the Test Tool ................................................................................................... 95

About this Chapter ..................................................................................................... 95

Cleaning the Test Tool ............................................................................................... 95

Storing the Test Tool ................................................................................................. 95

Charging the Batteries ............................................................................................... 96

Replacing the Battery Pack ........................................................................................ 97

Calibrating the Voltage Probes .................................................................................. 99

Displaying Version and Calibration Information ....................................................... 101

Displaying Battery Information ................................................................................. 101

Parts and Accessories ............................................................................................. 102

Optional Accessories ............................................................................................... 105

Troubleshooting ........ ...................... ..................... ..................... ...................... ......... 106

Specifications .................................................................................................................... 111

Introduction .............................................................................................................. 111

Oscilloscope ............................................................................................................ 112

Automatic Scope Measurements ............................................................................. 116

Meter Measurements for Model 190M-4 .................................................................. 119

Meter Measurements for Model 190M-2 .................................................................. 120

Recorder .................................................................................................................. 122

Zoom, Replay and Cursors ...................................................................................... 123

Miscellaneous ............... ........................... ............................ ........................... ......... 124

Environmental .......................................................................................................... 126

Contents

Certifications ............................................................................................................ 126

Safety ............................................................................................................... 126

10:1 Probe VPS410 ................................................................................................. 129

Electromagnetic Immunity ........................................................................................ 130

Index ................................................................................................................................. 131

(continued)

190M Series Medical ScopeMeter

Users Manual

Safety

Introduction

WWarning

Read “Safety Information” in this chapter before using this instrument.

The descriptions and instructions in this manual apply to all 190M Series Medical ScopeMeter versions (hereafter referred to as the instrument or as the test tool). The versions are listed below. The version 190M-4 appears in most illustrations.

Input C and Input D, and the Input C and Input D selection keys ( 190M-4.

and

) are only present on the version

Version Description

190M-2 Two 200 MHz Scope Inputs (BNC),

One Meter Input (banana jacks).

190M-4 Four 200 MHz Scope Inputs (BNC).

190M Series Medical ScopeMeter

Users Manual

Unpacking the Test Tool Kit

The following items are included in your test tool kit:

Figure 1. ScopeMeter Test Tool Kit

12345 - 12345 - 12345

Note

When new, the rechargeable Li-ion battery is not fully charged. See Chapter 7.

Unpacking the Test Tool Kit

The 190M Series Medical ScopeMeters include the following items:

# Description

1 ScopeMeter Test Tool including:

− Side strap

− Battery pack BP290 for model 190M-2 or

BP291 for model190M-4

2 Hanging Strap (see Chapter 6 for mounting

instructions)

3 BC190/808 Universal Power Adapter

4 USB interface cable for PC connection (USB-A

to mini-USB-B)

5 Safety Information sheet + CD ROM with Users

Manual (multi-language) and FlukeView ScopeMeter Software for Microsoft Windows

# Description

Voltage Probe Set (red)

Voltage Probe Set (blue)

Voltage Probe Set (gray), not for 190M-2

Voltage Probe Set (green), not for 190M-2

Each set includes:

a) 10:1 Voltage Probe, 300 MHz (red or blue or

gray or green) b) Hook Clip for Probe Tip (black) c) Ground Lead with Mini Alligator Clip (black) d) Ground Spring for Probe Tip (black) e) Insulation Sleeve (black)

10 MA 190 Accessory Kit

11 Test Leads with test pins (one red, one black),

for model 190M-2 only.

12 FlukeView Software Activation Key

13 Hard Shell Carrying Case

190M Series Medical ScopeMeter

Users Manual

Safety Information: Read First

Read all safety information before you use the test tool.

Specific warning and caution statements, where they apply, appear throughout the manual.

A “Warning” identifies conditions and procedures that are dangerous to the user.

A “Caution” identifies conditions and procedures that can cause damage the test tool or the equipment under test.

The following international symbols are used on the test tool and in this manual:

Li-Ion

See explanation in manual

Hazardous voltage may be present

Safety approval

Battery safety approval

Recycling information

Direct current

Do not dispose of this test tool as unsorted municipal waste. Go to Fluke's website for recycling information.

Double Insulation (Protection Class II)

Earth ground

Conforms to relevant Australian standards

Conforms to European Union directives.

Alternating current

RoHS China

Safety Information: Read First

XW Warning

To avoid electrical shock or fire, use only power cords and plugs that meet local safety regulations with the supplied BC190/808 Universal Power Adapter.

Note:

To accommodate connection to various line power sockets, the BC190/808 Universal 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. Line power cords with a protective grounding terminal are more commonly available. It is OK to use grounded line power cords, even though the ground terminal is not required.

XW Warning

To avoid electrical shock or fire if a test tool input is connected to more than 42 V peak, 30 V RMS or 60 V DC:

• Use only insulated voltage probes, test leads

and adapters supplied with the test tool, or indicated by Fluke Biomedical as suitable for the 190M Series Medical ScopeMeters.

• 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 power adapter first to the

ac outlet before connecting it to the test tool.

• Do not touch voltages more than 42 V peak ,

30 V RMS or 60 V DC.

• Do not connect the ground spring (Figure 1,

item d) to voltages more than 42 V peak, 30 V RMS, or 60 V DC with respect to earth ground.

• Do not apply more than the rated voltage,

between the terminals or between each terminal and earth ground.

190M Series Medical ScopeMeter

Users Manual

XW Warning

• 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. Fluke offers cables with plastic, safety designed BNC connectors suitable for the Medical ScopeMeter. See Chapter 7, “Optional Accessories.”

• Do not insert metal objects into connectors.

• Use the test tool only as specified, or the

protection supplied by the test tool can be compromised.

• Carefully read all instructions.

• Do not use the test tool if it operates

abnormally.

• Do not use and disable the test tool if it is

damaged.

• Keep fingers behind the finger guards on the

probes.

• Use only correct Measurement Category

(CAT), voltage, and amperage rated probes, test leads, and adapters for the measurement.

XW Warning

• Do not exceed the Measurement Category

(CAT) rating of the lowest rated individual component of a test tool, probe, or accessory.

• Do not use the test tool around explosive

gas, vapor, or in damp or wet environments.

• Measure a known voltage first to make sure

that the test tool operates correctly.

• Examine the case before you use the test

tool. Look for cracks or missing plastic. Carefully look at the insulation around the terminals.

• Do not work alone.

• Comply with local and national safety codes.

Use personal protective equipment (approved rubber gloves, face protection, and flame resistant clothes) to prevent shock and arc blast injury where hazardous live conductors are exposed.

• The battery door must be closed and locked

before you operate the test tool.

If Safety Features are Impaired

XW Warning

• Do not operate the test tool with covers

removed or the case open. Hazardous voltage exposure is possible.

• Remove the input signals before you clean

the test tool.

• Use only specified replacement parts.

Voltage ratings that are mentioned in the warnings are given as limits for “working voltage.” They represent V AC RMS (50 or 60 Hz) for ac sinewave applications and V DC for DC applications.

Measurement Category IV refers to the overhead or underground utility service of an installation.

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

Measurement Category II refers to local level, which is applicable for appliances and portable equipment.

The terms “Isolated” or “Electrically floating” are used in this manual to indicate a measurement in which the test tool input BNC 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.

The BNC jacks can independently be connected to a voltage above earth ground for isolated (electrically floating) measurements and are rated up to 1000 V RMS CAT III and 600 V RMS CAT IV with respect to 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.

Do not use test leads if they are damaged. Examine the test leads for damaged insulation, exposed metal, or if the wear indicator shows.

Whenever it is likely that safety has been impaired, turn off the test tool and disconnect it from any external signal sources and line power. Refer 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.

190M Series Medical ScopeMeter

Users Manual

Safe Use of Li-ion Battery Pack

Battery pack models BP290 (26 Wh)/BP291 (52 Wh) have been tested in accordance with the UN Manual of Tests and Criteria Part III Subsection 38.3 (ST/SG/AC.10/11/Rev.3) – more commonly known as the UN T1..T8 – tests, and have been found to comply with the stated criteria. The battery packs have been tested according to EN/IEC62133. As a result, they can be shipped unrestricted internationally by any means.

Storing the Battery Pack Safely

• Do not store battery packs near heat or fire. Do not

store in sunlight.

• Do not remove a battery pack from its original

packaging until required for use.

• When possible, remove the battery pack from the

equipment when not in use.

• Fully charge the battery pack before storing it for an

extended period to avoid a defect.

• After extended periods of storage, it may be

necessary to charge and discharge the battery packs several times to obtain maximum performance.

• Keep the battery pack out of the reach of children and

animals.

• Seek medical advice if a battery or part of it has been

swallowed.

Using the Battery Pack Safely

• Charge the battery pack before use. Use only Fluke-

approved power adapters to charge the battery pack. Refer to Fluke’s safety instructions and Users Manual for proper charging instructions.

• Do not leave a battery on prolonged charge when not

in use.

• The battery pack performs best when operated at normal room temperature 20 °C ± 5 °C (68 °F ± 9 °F).

• Do not put battery packs near heat or fire. Do not put in sunlight.

• Do not subject battery packs to severe impacts such as mechanical shock.

• Keep the battery pack clean and dry. Clean dirty connectors with a dry, clean cloth.

• Do not use any charger other than that specifically provided for use with this equipment.

• Do not use any battery that is not specified for use with the Medical ScopeMeter.

• Take careful notice of correct placement of the battery in the test tool or the External Battery Charger.

• Do not short-circuit a battery pack. Do not keep battery packs in a place where the terminals can be shorted by metal objects (e.g. coins, paperclips, pens or other).

Safe Use of Li-ion Battery Pack

• Never use a battery pack or charger showing visible

damage.

• Batteries contain hazardous chemicals that can cause

burns or explode. If exposure to chemicals occurs, clean with water and get medical aid. If the battery leaks, have the test tool repaired before use.

• Alteration of battery pack: do not attempt to open,

modify, reform or repair a battery pack that appears to be malfunctioning, or that has been physically damaged.

• Do not disassemble or crush battery packs.

• Use the battery only in the application for which it is

intended.

• Retain the original test tool information for future

reference.

Transporting the Battery Pack Safely

• The battery pack must adequately be protected

against short-circuit or damage during transport.

• Always consult the IATA guidelines describing safe air

transport of Li-ion batteries.

• Check-in luggage: battery packs are only allowed

when installed in the test tool.

• Hand carried luggage: a number of battery packs as

required for normal and individual use is allowed.

• Always consult national/local guidelines that are

applicable for shipment by mail or other transporters.

• A maximum of 3 battery packs may be shipped by

mail. The package must be marked as follows: PACKAGE CONTAINS LITHIUM-ION BATTERIES (NO LITHIUM METAL).

Disposing the Battery Pack Safely

• Always dispose of a worn out battery pack in

accordance with local regulations. Do not dispose of the battery in unsorted municipal waste. Refer to the Fluke website for recycling information.

• Dispose batteries only in discharged condition and

cover the battery terminals with insulating electrical tape.

190M Series Medical ScopeMeter

Users Manual

About this Chapter

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

Powering the Test Tool

Follow the procedure (steps 1 through 3) in Figure 2 to power the test tool from a standard ac outlet. See Chapter 6 for instructions on using battery power.

Chapter 1

Using the Scope and Meter

Turn the test tool on with the on/off key.

The test tool powers up in its last setup configuration.

BC190/808

Figure 2. Powering the Test Tool

190M Series Medical ScopeMeter

Users Manual

Resetting the Test Tool

If you want to reset the test tool to the factory settings, do the following:

Turn the test tool off.

USER

Press and hold the USER key.

Press and release.

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

USER

Now look at the display; you will see a screen that looks like Figure 3.

Release the USER key.

Figure 3. The Screen After Reset

Using the Scope and Meter Navigating a Menu

Navigating a Menu

The following example shows how to use the test tool’s menus to select a function. Subsequently follow steps 1 through 4 to open the scope menu and to choose an item.

SCOPE

To hide the labels for full screen view, press the

CLEAR key. Press the CLEAR key again to show

the labels again. This toggling enables you to check the labels without affecting your settings.

Press the SCOPE key to display the labels that define the present use for the four blue function keys at the bottom of the screen.

Note

Open the Waveform Options menu. This menu is displayed at the bottom of the screen. Actual settings are shown on a yellow background.

SCOPE

ENTER

3b 3b 3b

ENTER ENTER ENTER

Figure 4. Basic Navigation

ENTER

3 b

Pressing the blue arrow keys lets you to step through a menu without changing the settings.

To exit the menu at any moment press (CLOSE).

Use the blue arrow keys to highlight the item. Press the blue

ENTER key to accept the selection.

The next option will be selected. After the last option the menu will be closed.

Note

190M Series Medical ScopeMeter

Users Manual

Hiding Key Labels and Menus

You can close a menu or hide key label at any time:

CLEAR

To display menus or key labels, press one of the yellow menu keys, e.g. the

You can also close a menu using the CLOSE.

Hide any key label, press again to display the key label again (toggle function).

A displayed menu will be closed.

SCOPE key.

soft key

Key Illumination

Some keys are provided with an illumination LED. For an explanation of the LED function see the table below.

On: The display is off, test tool is running.

See Chapter 6 “Tips” section “Setting the Display AUTO-Off timer.”

Off: in all other situations On: Measurements are stopped, the

screen is frozen. (HOLD)

Off: Measurements are running. (RUN) On: The range key, the move up/down

key, and the F1…F4 key labels, apply to the illuminated channel key(s).

Off: -

HOLD

RUN

MANUAL

AUTO

TRIGGER

On: Manual operating mode. Off: Automatic operating mode, optimizes

the trace position, range, time base and triggering (Connect-and-View

On: signal is triggered Off: signal is not triggered Flashing: waiting for a trigger at “Single

Shot” or “On Trigger” trace update.

)

Using the Scope and Meter Input Connections

Input Connections

Look at the top of the test tool. The test tool has four safety BNC jack signal inputs (models 190M-4), or two safety BNC jack inputs and two safety 4-mm banana jack inputs (models 190M-2).

Isolated input architecture allows independent floating measurements with each input.

ALL INPUTS ISOLATED

Figure 5. Measurement Connections

Making Input Connections

To make scope measurements connect the red voltage probe to input A, the blue voltage probe to input B, the grey voltage probe to input C and the green voltage probe to input D. Connect the short ground leads of each voltage probe to its own reference potential (See Figure 6).

For Meter measurements refer to the applicable section in this chapter.

XWWarning

To avoid electrical shock use the insulation sleeve (Figure 1 item e)) if you use the probes without the probe tip or the ground spring.

− To maximally benefit from having

independently isolated floating inputs and to avoid problems caused by improper use, read Chapter 6: “Tips.”

− For an accurate indication of the measured

signal, it is necessary to match the probe to the test tool”s input channel. See section “Calibrating the voltage Probes” in Chapter 7.

Notes

190M Series Medical ScopeMeter

Users Manual

Figure 6. Scope Connections

Adjusting the Probe Type Settings

To obtain correct measurement results the test tool probe type settings must correspond to the connected probe types. To select the input A probe setting do the following:

ENTER

Display the INPUT A key labels.

Open the PROBE ON A menu.

Select the probe type Voltage,

Current, or Temp

Voltage: select the voltage probe

attenuation factor

Current and Temp: select the current probe or temperature probe sensitivity

Using the Scope and Meter

Selecting an Input Channel

To select an input channel, do the following:

Press the required channel key (A…D):

C D

RANGE

- the channel is turned on

- labels for the F1…F4 keys are shown. Press the channel key again to turn the labels off/on (toggle).

- the channel key illumination is turned on

If the channel key is illuminated, the RANGE and MOVE UP/DOWN keys

MOVE

are now assigned to the indicated channel.

To assign the RANGE and MOVE up down keys to multiple channels, keep one channel key pressed, then press another channel key.

Tip

To set multiple channels to the same range (V/div) as, for example, input A, do the following:

− Select the input A measurement function,

probe setting and input options for all involved channels

− press and hold

− press

− release

Notice that all pressed keys are illuminated now. The MOVE UP/DOWN key and the RANGE mV/V key applies to all involved input channels.

and/or

190M Series Medical ScopeMeter

Users Manual

Displaying an Unknown Signal with Connect-and-View™

The Connect-and-View feature lets the test tool display complex, unknown signals automatically. This function optimizes the position, range, time base, and triggering and assures a stable display of virtually any waveform. If the signal changes, the setup is automatically adjusted to maintain the best display result. This feature is especially useful for quickly checking several signals.

To enable the Connect-and-View feature when the test tool is in MANUAL mode, do the following:

MANUAL

AUTO

The bottom line shows the range, the time base, and the trigger information.

The waveform identifier (A) is visible on the right side of the screen, as shown in Figure 7. The input A zero icon at the left side of the screen identifies the ground level of the waveform.

MANUAL

AUTO

Perform an Auto Set. AUTO appears at the top right of the screen, the key illumination is off.

Press a second time to select the manual range again. MANUAL appears at the top right of the screen, the key illumination is on.

Figure 7. The Screen After an Auto Set

Use the light-gray bottom of the keypad to change the view of the waveform manually.

RANGE, TIME and MOVE keys at the

Using the Scope and Meter Making Automatic Scope Measurements

Making Automatic Scope Measurements

The test tool offers a wide range of automatic scope measurements. In addition to the waveforms you can display four numeric readings: R readings are selectable independently, and the measurements can be done on the input A , input B, input C or input D waveform.

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

SCOPE

Display the SCOPE key labels.

Open the READING .. menu.

ENTER

Select the reading number to be displayed, for example READING 1

Select on A. Observe that the highlight jumps to the present measurement.

EADING 1 … 4. These

Observe that the top left of the screen displays the Hz measurement. (See Figure 8.)

To choose also a Peak-Peak measurement for Input B as second reading, do the following:

ENTER

SCOPE

ENTER

Select the Hz measurement.

Display the SCOPE key labels.

Open the READING .. menu.

Select the reading number to be displayed, for example READING 2

Select on B. The highlight jumps to the measurements field.

190M Series Medical ScopeMeter

Users Manual

ENTER

Open the PEAK menu.

Select the Peak-Peak measurement.

Figure 8 shows an example of the screen with two readings. The character size will be reduced when more then two readings are on.

Figure 8. Hz and V peak-peak as Scope Readings

Freezing the Screen

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

HOLD

RUN

HOLD

RUN

Freeze the screen. HOLD appears at the right of the reading area. The key illumination is on.

Resume your measurement. The key illumination is off.

Using the Scope and Meter Using Average, Persistence and Glitch Capture

Using Average, Persistence and Glitch Capture

Using Average for Smoothing Waveforms

To smooth the waveform, do the following:

SCOPE

ENTER

Display the SCOPE key labels.

Open the WAVEFORM OPTIONS menu.

Jump to Average:

Select On... to open the AVERAGE menu.

You can use the average functions to suppress random or uncorrelated noise in the waveform without loss of bandwidth. Waveform samples with and without smoothing are shown in Figure 9.

ENTER

Select Average factor: Average

64. This averages the outcomes

of 64 acquisitions.

Select Average: Normal (normal average) or Smart (smart average, see below)

Smart average

In the normal average mode occasional deviations in a waveform just distort the averaged wave shape, and do not show up on screen clearly. When a signal really changes, for instance when you probe around, it takes quite some time before the new wave shape is stable. With smart averaging you can quickly probe around, and incidental waveform changes like a line flyback in video show up on screen instantly.

190M Series Medical ScopeMeter

Users Manual

Using Persistence, Envelope and Dot-Join to Display Waveforms

You can use Persistence to observe dynamic signals.

Figure 9. Smoothing a Waveform

SCOPE

Display the SCOPE key labels.

Open the WAVEFORM OPTIONS menu.

ENTER

Jump to Waveform: and open the Persistence... menu.

Using the Scope and Meter Using Average, Persistence and Glitch Capture

ENTER

Select Digital Persistence: Short, Medium, Long or Infinite to observe

dynamic waveforms like on an analog oscilloscope.

Select Digital Persistence: Off, Display: Envelope to see the upper and lower boundaries of dynamic waveforms (envelope mode).

Select Display: Dot-join: Off to display measured samples only. Dot join off may be useful when measuring for example modulated signals or video signals.

Select Display: Normal to turn the envelope mode off and the dot-join function on.

Figure 10. Using Persistence to Observe Dynamic

Signals

Displaying Glitches

To capture glitches on a waveform, do the following:

SCOPE

Display the SCOPE key labels.

Open the WAVEFORM OPTIONS menu.

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ENTER

Select Glitch: On

Exit the menu.

You can use this function to display events (glitches or other asynchronous waveforms) of 8 ns (8 nanoseconds, due to ADC’s with 125 MS/s sampling speed) or wider, or you can display HF modulated waveforms.

When you select the 2 mV/div range Glitch Detect will automatically be turned Off. In the 2 mV/div range you can set Glitch Detect On manually.

Suppressing High Frequency Noise

Switching the glitch detection off (Glitch: Off) will suppress the high frequency noise on a waveform. Averaging will suppress the noise even more.

SCOPE

ENTER

See also Using Average for Smoothing Waveforms on page 21.

Glitch capture and average do not affect bandwidth. Further noise suppression is possible with bandwidth limiting filters. See Working with Noisy Waveforms on page 27.

Display the SCOPE key labels.

Open the WAVEFORM OPTIONS menu.

Select Glitch: Off, then select

Average: On… to open the

AVERAGE menu.

Select Average 8.

Using the Scope and Meter

Acquiring Waveforms

Setting the Acquisition Speed and Waveform Memory Depth

To set the acquisition speed, do the following:

SCOPE

Selecting AC-Coupling

After a reset, the test tool is dc-coupled so that ac and dc voltages appear on the screen.

Use ac-coupling when you wish to observe a small ac signal that rides on a dc signal. To select ac-coupling, do the following:

Display the INPUT A key labels.

Observe that the bottom left of the screen displays the ac-coupling icon:

You can define how Auto Set affects this setting, see Chapter 6 “Changing the Auto Set Options.”

Highlight AC.

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Reversing the Polarity of the Displayed Waveform

To invert, for example the input A waveform, do the following:

For example, a negative-going waveform is displayed as positive-going waveform which may provide a more meaningful view. An inverted display is identified by an inversed trace identifier ( and in the status line below the waveform.

ENTER

Display the INPUT A key labels.

Open the INPUT A menu.

Select Inverted and accept inverted waveform display.

Exit the menu.

) at the right of the waveform,

Variable Input Sensitivity

The variable input sensitivity allows you to adjust any input sensitivity continuously, for example to set the amplitude of a reference signal to exactly 6 divisions.

The input sensitivity of a range can be increased up to 2.5 times, for example between 10 mV/div and 4 mV/div in the 10 mV/div range.

To use the variable input sensitivity on for example input A, do the following:

1 Apply the input signal

MANUAL

AUTO

An Auto Set will turn off the variable input sensitivity. You can now select the required input range. Keep in mind that the sensitivity will increase when you start adjusting the variable sensitivity (the displayed trace amplitude will increase).

Perform an Auto Set (AUTO must appear at the top of the screen)

Display the INPUT A key labels.

Using the Scope and Meter

Acquiring Waveforms

Open the INPUT A menu.

At the bottom left of the screen the text A Var is displayed.

Selecting Variable will turn off cursors and automatic input ranging.

ENTER

RANGE

Variable input sensitivity is not available in the

Mathematics functions (+ - x and Spectrum).

Select and accept Variable.

Exit the menu.

Press mV to increase the sensitivity, press V to decrease the sensitivity.

Note

Working with Noisy Waveforms

To suppress high frequency noise on waveforms, you can limit the working bandwidth to 20 kHz or 20 MHz. This function smoothes the displayed waveform. For the same reason, it improves triggering on the waveform.

To choose HF reject on for example input A, do the following:

Display the INPUT A key labels.

Open the INPUT A menu.

ENTER

Jump to Bandwidth: and select 20kHz (HF reject) to accept the

bandwidth limitation.

Tip

To suppress noise without loss of bandwidth, use the average function or turn off Display Glitches.

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Using Mathematics Functions +, -, x, XY-mode

You can add (+), subtract (-), or multiply (x) two waveforms. The test tool will display the mathematical result waveform and the source waveforms.

The XY-mode provides a plot with one input on the vertical axis and the second input on the horizontal axis.

The Mathematics functions perform a point-to-point operation on the involved waveforms.

To use a Mathematics function, do the following:

SCOPE

ENTER

Display the SCOPE key labels.

Open the WAVEFORM OPTIONS menu.

Jump to Waveform: and Select

Mathematics... to open the Mathematics menu.

ENTER

Select Function: +, -, x or XYmode.

Select the first waveform: Source 1: A, B, C or D

Select the second waveform: Source 2: A, B, C or D

The mathematical function key labels will be displayed now:

Press to select a scale factor to fit the result waveform onto the display.

Press to move the result waveform up or down.

Switch the result waveform on/off

(toggle).

The sensitivity range of the mathematical result is equal to the sensitivity range of the least sensitive input divided by the scale factor.

Using the Scope and Meter Acquiring Waveforms

Using Mathematics Function Spectrum (FFT)

The Spectrum function shows the spectral content of the input A, B, C or D waveform in the input trace color. It performs an FFT (Fast Fourier Transform) to transform the amplitude waveform from the time domain into the frequency domain.

To reduce the effect of side-lobes (leakage) it is recommended to use Auto windowing. This will automatically adapt the part of the waveform that is analyzed to a complete number of cycles

Selecting Hanning, Hamming or no windowing results in a faster update, but also in more leakage.

Ensure that the entire waveform amplitude remains on the screen.

To use the Spectrum function, do the following:

SCOPE

Display the SCOPE key labels.

Open the Waveform Options menu.

You will see a screen that looks like Figure 11.

Observe that the top right of the screen displays SPECTRUM.

If it displays LOW AMPL a spectrum measurement cannot be done as the waveform amplitude is too low.

ENTER

Jump to Waveform: and select Mathematics... to open the Mathematics menu.

Select Function: Spectrum.

Select the source waveform for the spectrum: Source : A, B, C or D

Select Window: Auto (automatic windowing), Hanning, Hamming, or None (no windowing).

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If it displays WRONG TB the time base setting does not enable the test tool to display an FFT result. It is either too slow, which can result in aliasing, or too fast, which results in less than one signal period on the screen.

Perform a spectrum analysis on trace A, B, C or D.

Set the horizontal amplitude scale to linear or logarithmic.

Set the vertical amplitude scale to linear or logarithmic.

Turn the spectrum function off/on (toggle function).

Figure 11. Spectrum measurement

Using the Scope and Meter Acquiring Waveforms

Comparing Waveforms

You can display a fixed reference waveform with the actual waveform for comparison.

To create a reference waveform and to display it with the actual waveform, do the following:

SCOPE

ENTER

Display the SCOPE key labels.

Open the Waveform Options menu.

Jump to the Waveform field and select Reference… to open the

WAVEFORM REFERENCE menu.

ENTER

Select On to display the reference waveform. This can be:

- the last used reference waveform (if not available no reference waveform will be shown).

- the envelope waveform if the persistence function Envelope is on.

Select Recall… to recall a saved waveform (or waveform envelope) from memory and use it as a reference waveform.

Select New… to open the NEW

REFERENCE menu.

If you selected New… continue at

step 5, else go to step 6.

Select the width of an additional envelope to be added to the momentary waveform.

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ENTER

To recall a saved waveform from memory and use it as a reference waveform, refer also to Chapter 5 Recalling Screens with Associated Setups.

Example of reference waveform with an additional envelope of ±2 pixels:

black pixels: basic waveform gray pixels: ± 2 pixels envelope

1 vertical pixel on the display is 0.04 x range/div 1 horizontal pixel on the display is 0.0333 x range/div.

Store the momentary waveform and display it permanently for reference. The display also shows the actual waveform.

Pass - Fail Testing

You can use a reference waveform as a test template for the actual waveform. If at least one sample of a waveform is outside the test template, the failed or passed scope screen will be stored. Up to 100 screens can be stored. If the memory is full, the first screen will be deleted in favor of the new screen to be stored.

The most appropriate reference waveform for the Pass-Fail test is a waveform envelope.

To use the Pass - Fail function using a waveform envelope, do the following:

Display a reference waveform as described in the previous section “Comparing Waveforms”

ENTER

Each time a scope screen is stored you will hear a beep. Chapter 3 provides information on how to analyze the stored screens.

From the Pass Fail Testing: menu select

Store “Fail” : each scope screen with samples outside the reference will be stored

Store “Pass” : each scope screen with no samples outside the reference will be stored

Using the Scope and Meter Analyzing Waveforms

Analyzing Waveforms

You can use the analysis functions CURSOR, ZOOM and

REPLAY to perform detailed waveform analysis. These

functions are described in Chapter 3: “Using Cursors, Zoom and Replay.”

Making Automatic Meter Measurements (Model 190M-4)

The test tool offers a wide range of automatic meter measurements. You can display four large numeric readings: R independently, and the measurements can be done on the input A, B, C or input D waveform. In METER mode the waveforms are not displayed. The 20 kHz HF rejection filter (see Working with Noisy Waveforms on page 27) is always on in the METER mode.

Selecting a Meter Measurement

To choose a current measurement for input A, do the following:

EADING 1 … 4. These readings are selectable

METER

Display the METER key labels.

Open the Reading .. menu.

Select the reading number to be displayed, for example READING 1

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ENTER

You will see a screen like in Figure 12.

ENTER

Select on A. Observe that the highlight jumps to the present measurement.

Select the A dc… measurement.

Select a current probe sensitivity that matches the connected current probe (see Adjusting the Probe Type Settings on page 16.)

Figure 12. Meter Screen

Making Relative Meter Measurements

A relative measurement displays the present measurement result relative to a defined reference value.

The following example shows how to perform a relative voltage measurement. First obtain a reference value:

METER

Display the METER key labels.

Measure a voltage to be used as reference value.

Set RELATIVE to ON. (ON is highlighted.) This stores the reference value as reference for subsequent measurements. Observe the ADJUST REFERENCE soft key (F3) that enables you to adjust the reference value (see step 5 below).

Measure the voltage to be compared to the reference.

Using the Scope and Meter Making Automatic Meter Measurements (Model 190M-4)

Now the large reading is the actual input value minus the stored reference value. The actual input value is displayed below the large reading (ACTUAL: xxxx), see Figure 13.

Figure 13. Making a Relative Measurement

You can use this feature when, for example, you need to monitor input activity (voltage, temperature) in relation to a known good value.

Adjusting the reference value

To adjust the reference value, do the following:

Display the Adjust Reference menu.

Select the applicable relative measurement reading.

Select the digit you want to adjust.

ENTER

Adjust the digit. Repeat step 7 and step 8 until finished.

Enter the new reference value.

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Making Multimeter Measurements (Model 190M-2)

The screen displays the numeric readings of the measurements on the meter input.

Making Meter Connections

Use the two 4-mm safety red ( ) and black (COM) banana jack inputs for the Meter functions. (See Figure

14.)

CAT II 1000V

CAT III 1000V CAT IV 600V

Figure 14. Meter Connections

Measuring Resistance Values

To measure a resistance, do the following:

Connect the red and black test leads from the 4-mm banana jack inputs to the resistor.

METER

Display the METER key labels.

Open the MEASUREMENT menu.

Highlight Ohms.

ENTER

Select Ohms measurement.

Using the Scope and Meter Making Multimeter Measurements (Model 190M-2)

The resistor value is displayed in ohms. Observe also that the bargraph is displayed. (See Figure 15.)

Figure 15. Resistor Value Readings

Making a Current Measurement

You can measure current in both Scope mode and Meter mode. Scope mode has the advantage of waveforms being displayed while you perform measurements.Meter mode has the advantage of high measurement resolution.

The next example explains a typical current measurement in Meter mode.

XWWarning

Carefully read the instructions about the current probe you are using.

To set up the test tool, do the following:

Connect a current probe (e.g. Fluke 024-74, optional) from the 4-mm banana jack outputs to the conductor to be measured.

Ensure that the red and black probe connectors correspond to the red and black banana jack inputs. (See Figure 16.)

METER

Display the METER key labels.

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ENTER

Now, you will see a screen like in Figure 17.

Figure 16. Measurement Setup

Open the MEASUREMENT menu.

Accept the current measurement.

Highlight A ac.

ENTER

Open the CURRENT PROBE submenu.

Figure 17. Ampere Measurement Readings

Observe the sensitivity of the current probe. Highlight the corresponding sensitivity in the menu, e.g. 1 mV/A.

Using the Scope and Meter Making Multimeter Measurements (Model 190M-2)

Selecting Auto/Manual Ranges

To activate manual ranging, do the following during any Meter measurement:

MANUAL

AUTO

Activate manual ranging.

Observe how the bargraph sensitivity changes.

Use manual ranging to set a fixed bargraph sensitivity and decimal point.

RANGE

MANUAL

AUTO

Increase (V) or decrease (mV) the range.

Choose auto ranging again.

When in auto ranging, the bargraph sensitivity and decimal point are automatically adjusted while checking different signals.

Making Relative Meter Measurements

A relative measurement displays the present measurement result relative to a defined reference value.

The following example shows how to perform a relative voltage measurement. First obtain a reference value:

METER

Display the METER key labels.

Measure a voltage to be used as reference value.

Measure the voltage to be compared to the reference.

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Now the large reading is the actual input value minus the stored reference value. The bargraph indicates the actual input value. The actual input value and the reference value are displayed below the large reading (ACTUAL: xxxx REFERENCE: xxx), see Figure 18.

Figure 18. Making a Relative Measurement

You can use this feature when, for example, you need to monitor input activity (voltage, temperature) in relation to a known good value.

Adjusting the reference value

To adjust the reference value, do the following:

Display the Adjust Reference menu.

Select the digit you want to adjust.

ENTER

Adjust the digit. Repeat step 6 and step 7 until finished.

Enter the new reference value.

About this Chapter

This chapter provides a step-by-step introduction to the recorder functions of the test tool. The introduction gives examples to show how to use the menus and perform basic operations.

Opening the Recorder Main Menu

First choose a measurement in scope or meter mode. Now you can choose the recorder functions from the recorder main menu. To open the main menu, do the following:

RECORDER

Open the recorder main menu. (See Figure 19).

Chapter 2

Using The Recorder Functions

Figure 19. Recorder Main Menu

Trendplot Meter is only present in model 190M-2.

190M Series Medical ScopeMeter Users Manual

Plotting Measurements Over Time (TrendPlot™)

Use the TrendPlot function to plot a graph of Scope or Meter measurements (readings) as function of time.

Note

Because the navigations for the Trendplot Scope and the Trendplot Meter are identical, only Scope Trendplot is explained in the next sections.

Starting a TrendPlot Function

To start a TrendPlot, do the following:

1 Make automatic Scope or Meter measurements,

see Chapter 1. The readings will be plotted!

RECORDER

ENTER

The test tool continuously records the digital readings of the measurements and displays these as a graph. The TrendPlot graph rolls from right to left like a paper chart recorder.

Observe that the recorded time from start appears at the bottom of the screen. The present reading appears on top of the screen. (See Figure 20.)

Open the RECORDER main menu.

Highlight Trend Plot.

Start the TrendPlot recording.

Using The Recorder Functions Plotting Measurements Over Time (TrendPlot™)

Note

When simultaneously TrendPlotting two readings, the screen area is split into two sections of four divisions each. When simultaneously TrendPlotting three or four readings, the screen area is split into three or four sections of two divisions each.

When the test tool is in automatic mode, automatic vertical scaling is used to fit the TrendPlot graph on the screen.

Set RECORDER to STOP to freeze the recorder function.

Figure 20. TrendPlot Reading

Scope TrendPlot is not possible on cursor related measurements. As an alternative you may use FlukeView logging of readings.

Set RECORDER to RUN to restart.

Note

190M Series Medical ScopeMeter Users Manual

Displaying Recorded Data

When in normal view (NORMAL), only the twelve most recently recorded divisions are displayed on screen. All previous recordings are stored in memory.

VIEW ALL shows all data in memory:

Press

NORMAL) and overview (VIEW ALL).

view (

When the recorder memory is full, an automatic compression algorithm is used to compress all samples into half of the memory without loss of transients. The other half of the recorder memory is free again to continue recording.

Display an overview of the full waveform.

repeatedly to toggle between normal

Changing the Recorder Options

At the lower right of the display, the status line indicates a time. You can choose this time to represent either the start time of the recording (‘Time of Day’) or the time elapsed since the start of the recording (‘From Start’).

To change the time reference, proceed from step 6 as follows:

Open the RECORDER OPTIONS menu.

ENTER

Turning Off the TrendPlot Display

Select Time of Day or From Start

Exit the recorder function.

Using The Recorder Functions Recording Scope Waveforms In Deep Memory (Scope Record)

Recording Scope Waveforms In Deep Memory (Scope Record)

The SCOPE RECORD function is a roll mode that logs a long waveform of each active input. This function can be used to monitor waveforms like motion control signals or the power-on event of an Uninterruptable Power Supply (UPS). During recording, fast transients are captured. Because of the deep memory, recording can be done for more than one day. This function is similar to the roll mode in many DSO’s but has deeper memory and better functionality.

Starting a Scope Record Function

To record for example the input A and input B waveform, do the following:

1 Apply a signal to input A and input B.

RECORDER

ENTER

The waveform moves across the screen from right to left like on a normal chart recorder. (See Figure 21).

Open the RECORDER main menu.

From the Recorder main menu, highlight Scope Record and Start the recording.

Figure 21. Recording Waveforms

Observe that the screen displays the following:

• Time from start at the top of the screen.

• The status at the bottom of the screen which includes

the time/div setting as well as the total timespan that fits the memory.

Note

For accurate recordings it is advised to let the instrument first warm up for five minutes.

190M Series Medical ScopeMeter Users Manual

Displaying Recorded Data

In Normal view, the samples that roll off the screen are stored in deep memory. When the memory is full, recording continues by shifting the data in memory and deleting the first samples out of memory.

In View All mode, the complete memory contents are displayed on the screen.

You can analyze the recorded waveforms using the Cursors and Zoom functions. See Chapter 3: “Using Replay, Zoom and Cursors”.

Press to toggle between VIEW ALL (overview of all recorded samples) and NORMAL view.

Using Scope Record in Single Sweep Mode

Use the recorder Single Sweep function to automatically stop recording when the deep memory is full.

Continue from step 3 of the previous section:

ENTER

Stop recording to unlock the OPTIONS… softkey.

Open the RECORDER OPTIONS menu.

Jump to the Mode field, select Single Sweep and accept the recorder options.

Start recording.

Using The Recorder Functions Recording Scope Waveforms In Deep Memory (Scope Record)

Using Triggering to Start or Stop Scope Record

To record an electrical event that causes a fault, it might be useful to start or stop recording on a trigger signal:

Start on trigger to start recording; recording stops when the deep memory is full

Stop on trigger to stop recording.

Stop when untriggered to continue recording as long as a next trigger comes within 1 division in view all mode.

For the models 190M-4 the signal on the BNC input that has been selected as trigger source must cause the trigger.

For the models 190M-2 the signal applied to the banana jack inputs ( trigger. The trigger source is automatically set to (external).

To set up the test tool, continue from step 3 of the previous section:

4 Apply the signal to be recorded to the BNC

EXT TRIGGER (in)). signal must cause the

input(s).

Stop recording to unlock the

OPTIONS… softkey

Ext.

ENTER

For external triggering (190M-2) continue at step 9.

ENTER

Open the RECORDER OPTIONS menu.

Jump to the Mode: field, select

on Trigger… (models 190M-4) or on Ext. (models 190M-2) to open

the START SINGLE SWEEP ON

TRIGGERING or the START SINGLE SWEEP ON EXT. menu.

Select one of the Conditions: and accept the selection.

Select the desired trigger slope (Slope:) and jump to Level:

190M Series Medical ScopeMeter Users Manual

ENTER

11 Apply a trigger signal to the red and black ext.

trigger banana inputs.

During recording samples are continuously saved in deep memory. The last twelve recorded divisions are displayed on the screen. Use View All to display the full memory contents.

To learn more about the Single Shot trigger function, see Chapter 4 “Triggering on Waveforms”.

Select the 0.12V or 1.2V trigger level and accept all recorder options.

Note

Figure 22. Triggered Single Sweep Recording

Analyzing a TrendPlot or Scope Record

From a TrendPlot or Scope Record you can use the analysis functions CURSORS and ZOOM to perform detailed waveform analysis. These functions are described in Chapter 3: “Using Replay, Zoom and Cursors”.

Chapter 3

Using Replay, Zoom and Cursors

About this Chapter

This chapter covers the capabilities of the analysis functions Cursor, Zoom, and Replay. These functions can be used with one or more of the primary functions Scope, TrendPlot or Scope Record.

It is possible to combine two or three analysis functions. A typical application using these functions follows:

• First replay the last screens to find the screen of

special interest.

• Then zoom in on the signal event.

• Finally, make measurements using the cursors.

Replaying the 100 Most Recent Scope Screens

When you are in scope mode, the test tool automatically stores the 100 most recent screens. When you press the

HOLD key or the REPLAY key, the memory contents are

frozen. Use the functions in the in time” by stepping through the stored screens to find the screen of your interest. This feature lets you capture and view signals even if you did not press

REPLAY menu to “go back

HOLD.

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Replaying Step-by-Step

To step through the last scope screens, do the following:

REPLAY

From scope mode, open the

REPLAY menu.

Observe that the trace is frozen and that REPLAY appears at the top of the screen (see Figure 23).

Observe that the bottom of the waveform area displays the replay bar with a screen number and related time stamp:

Step through the previous screens.

Step through the next screens.

Figure 23. Replaying a Waveform

The replay bar represents all 100 stored screens in memory. The displayed on the screen (in this example: the bar is partly white, the memory is not completely filled with 100 screens.

From this point you can use the zoom and cursor functions to study the signal in more detail.

icon represents the picture being

SCREEN -51). If

Using Replay, Zoom and Cursors

Replaying the 100 Most Recent Scope Screens

Replaying Continuously

You can also replay the stored screens continuously, like playing a video tape.

To replay continuously, do the following:

Wait until the screen with the signal event of interest appears.

REPLAY

From Scope mode, open the

REPLAY menu.

Observe that the trace is frozen and REPLAY appears at the top of the screen.

Continuously replay the stored screens in ascending order.

Stop the continuous replay.

Turning Off the Replay Function

Turn off REPLAY.

Capturing 100 Intermittents Automatically

When you use the test tool in triggered mode, 100 triggered screens are captured.

By combining the trigger possibilities with the capability of capturing 100 screens for later replay, you can leave the test tool unattended to capture intermittent signal anomalies. This way you could use Pulse Triggering to trigger and capture 100 intermittent glitches or you could capture 100 UPS startups.

For triggering, see Chapter 4: “Triggering on Waveforms”.

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Zooming in on a Waveform

To obtain a more detailed view of a waveform, you can zoom in on a waveform using the

To zoom in on a waveform, do the following:

ZOOM

Display the ZOOM key labels.

ZOOM appears at the top of the

screen, and the waveform is magnified.

ZOOM function.

Enlarge (decrease the time/div) or shrink (increase the time/div) the waveform.

Scroll. A position bar displays the position of the zoomed part in relation to the total waveform.

Tip

Even when the key labels are not displayed at the bottom of the screen, you can still use the arrow keys to zoom in and out. You can also use

s TIME ns key to zoom in and out.

the

Figure 24. Zooming in a Waveform

Observe that the bottom of the waveform area displays the zoom ratio, position bar, and time/div (see Figure 24). The zoom range depends on the amount of data samples stored in memory.

Turning Off the Zoom Function

Turn off the ZOOM function.

Using Replay, Zoom and Cursors

Making Cursor Measurements

Cursors allow you to make precise digital measurements on waveforms. This can be done on live waveforms, recorded waveforms, and on saved waveforms.

Using Horizontal Cursors on a Waveform

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

CURSOR

From scope mode, display the cursor key labels.

Press to highlight .

Highlight the upper cursor.

Move the upper cursor to the desired position on the screen.

Highlight the lower cursor.

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 still can use the arrow keys. This allows full control of both cursors while having full screen view.

Figure 25. Voltage Measurement with Cursors

The screen shows the voltage difference between the two cursors and the voltage at the cursors. (See Figure 25.)

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

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Using Vertical Cursors on a Waveform

To use the cursors for a time measurement (T, 1/T), for a mVs-mAs-mWs measurement, or for an RMS measurement of the trace section between the cursors, do the following:

CURSOR

From scope mode, display the cursor key labels.

Press to highlight

Choose, for example, time measurement: T.

Choose the trace that you want the markers to be placed on:

A ,B, C, D or M (Mathematics).

Highlight the left cursor.

Move the left cursor to the desired position on the waveform.

Highlight the right cursor.

Figure 26. Time Measurement with Cursors

The screen shows the time difference between the cursors and the voltage difference between the two markers. See Figure 26.

Move the right cursor to the desired position on the waveform.

Select OFF to turn off the cursors.

Using Replay, Zoom and Cursors

Making Cursor Measurements

Notes

− For mVs select probe type ‘Voltage’.

− For mAs select probe type ‘Current’.

− For mWs select mathematical function

x, and probe type ‘Voltage’ for one channel and ‘Current’ for the other channel.

Using Cursors on a Mathematical Result (+ - x) Waveform

Cursor measurements on, for examle, a AxB waveform give a reading in Watts if input A measures (milli)Volts and input B measures (milli)Amperes.

For other cursor measurements on, for example, a A+B, A-B or AxB waveform no reading will be available if the input A and input B measurement unit are different.

Using Cursors on Spectrum Measurements

To do a cursor measurent on a spectrum, do the following:

CURSOR

From Spectrum measurement display the cursor key label.

Move the cursor and observe the readings at the top of the screen.

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Making Rise Time Measurements

To measure rise time, do the following:

CURSOR

From scope mode, display the cursor key labels.

Press to highlight .

For multiple traces select the required trace A, B, C, D or M (if a math function is active).

Select MANUAL or AUTO (this automatically does steps 5 to 7).

Move the upper cursor to 100% of the trace height. A marker is shown at 90%.

Highlight the other cursor.

Move the lower cursor to 0% of the trace height. A marker is shown at 10%.

The reading shows the risetime from 10%-90% of the trace amplitude.

Figure 27. Risetime Measurement

Chapter 4

Triggering on Waveforms

About this Chapter

This chapter provides an introduction to the trigger functions of the test tool. Triggering tells the test tool when to begin displaying the waveform. You can use fully automatic triggering, take control of one or more main trigger functions (semi-automatic triggering), or you can use dedicated trigger functions to capture special waveforms.

Following are some typical trigger applications:

• Use the Connect-and-View™ function to have full

automatic triggering and instant display of virtually any waveform.

• If the signal is unstable or has a very low frequency,

you can control the trigger level, slope, and trigger

delay for a better view of the signal. See the next section.

• For dedicated applications, use one of the three

manual trigger functions:

• Edge triggering

• Video triggering

• Pulse Width triggering

• External Triggering (models 190M-2 only)

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Setting Trigger Level and Slope

The Connect-and-View™ function enables hands-off triggering to display complex unknown signals.

When your test tool is in manual range, do the following:

MANUAL

AUTO

Automatic triggering assures a stable display of virtually any signal.

From this point, you can take over the basic trigger controls such as level, slope and delay. To optimize trigger level and slope manually, do the following:

TRIGGER

Perform an auto set. AUTO appears at the top right of the screen.

Display the TRIGGER key labels.

Trigger on either positive slope or negative slope of the chosen waveform.

In Dual Slope Triggering ( X ) the test tool triggers on both positive slope and negative slope.

Enable the arrow keys for manual trigger level adjustment.

Figure 28. Screen with all Trigger Information

4 Adjust the trigger level.

Observe the trigger icon that indicates the trigger position, trigger level, and slope.

At the bottom of the screen the trigger parameters are displayed (See Figure 28). For example, means that input A is used as the trigger source with a positive slope.

When a valid trigger signal is found, the trigger key will be lit and the trigger parameters appear in black.

When no trigger is found, the trigger parameters appear in gray, ands the key light will be off.

Triggering on Waveforms Using Trigger Delay or Pre-trigger

Using Trigger Delay or Pre-trigger

You can begin to display the waveform some time before or after the trigger point has been detected. Initially, you have a half screen (6 divisions) of pre-trigger view (negative delay).

To set the trigger delay, do the following:

Observe that the trigger icon on the screen moves to show the new trigger position. When the trigger position moves left off of the screen, the trigger icon changes into

Moving the trigger icon to the right on the display gives you a pre-trigger view. This allows you to see what happened before the trigger event, or what caused the trigger.

In case of a trigger delay, the status at the bottom of the screen will change. For example:

This means that input A is used as the trigger source with a positive slope. The 500.0 ms indicates the (positive) delay between trigger point and waveform display.

MOVE

to indicate that you have selected a trigger delay.

Hold down to adjust the trigger delay.

When a valid trigger signal is found, the trigger key will be lit and the trigger parameters appear in black. When no trigger is found, the trigger parameters appear in gray, ands the key light will be off.

Figure 29. Trigger Delay or Pre-trigger View

Figure 29 shows an example of a trigger delay of 500 ms (top) and an example of pre-trigger view of 8 divisions (bottom).

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Automatic Trigger Options

In the trigger menu, settings for automatic triggering can be changed as follows. (See also Chapter 1: “Displaying an Unknown Signal with Connect-and-View”)

TRIGGER

TRIGGER key labels can differ depending on

The the latest trigger function used.

ENTER

Display the TRIGGER key labels.

Note

Open the TRIGGER OPTIONS menu.

Open the AUTOMATIC TRIGGER menu.

If the frequency range of the automatic triggering is set to > 15 Hz, the Connect-and-View™ function responds more quickly. The response is quicker because the test tool is instructed not to analyze low frequency signal components. However, when you measure frequencies lower than 15 Hz, the test tool must be instructed to analyze low frequency components for automatic triggering:

ENTER

Select > 1 HZ and return to the measurement screen.

Triggering on Waveforms Triggering on Edges

Triggering on Edges

If the signal is unstable or has a very low frequency, use edge triggering to obtain full manual trigger control.

To trigger on rising edges of the input A waveform, do the following:

TRIGGER

ENTER

Display the TRIGGER key labels.

Open the TRIGGER OPTIONS menu.

Open the TRIGGER ON EDGE menu.

When Free Run is selected, the test tool updates the screen even if there are no triggers. A trace always appears on the screen.

When On Trigger is selected, the test tool needs a trigger to display a waveform. Use this mode if you want to update the screen only when valid triggers occur.

When Single Shot is selected, the test tool waits for a trigger. After receiving a trigger, the waveform is displayed and the instrument is set to HOLD.

In most cases it is advised to use the Free Run mode:

ENTER

Observe that the key labels at the bottom of the screen have adapted to allow further selection of specific edge trigger settings:

Select Free Run, jump to Trigger Filter.

Set Trigger Filter to Off.

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Triggering on Noisy Waveforms

To reduce jitter on the screen when triggering on noisy waveforms, you can use a trigger filter. Continue from step 3 of the previous example as follows:

ENTER

Select On Trigger, jump to Trigger Filter.

Set Noise Reject or HF Reject to On. This is indicated by a taller

trigger icon .

When Noise Reject is on, an increased trigger gap will be applied.

When HF Reject is on, HF noise on the (internal) trigger signal will be suppressed.

Making a Single Acquisition

To catch single events, you can perform a single shot acquisition (one-time screen update). To set up the test tool for a single shot of the input A waveform, continue from step 3 (page 61) again:

ENTER

Select Single Shot.

The word

MANUAL appears at the top of the screen

indicating that the test tool is waiting for a trigger. As soon as the test tool receives a trigger, the waveform is displayed and the instrument is set to hold. This is indicated by the word

HOLD at top of the screen.

The test tool will now have a screen like Figure 30.

HOLD

RUN

Arm the test tool for a new single shot.

Tip

The test tool stores all single shots in the replay memory. Use the Replay function to look at all the stored single shots (see Chapter 3).

Figure 30. Making a Single Shot Measurement

Triggering on Waveforms Triggering on Edges

N-Cycle Triggering

N-Cycle triggering enables you to create a stable picture of for example n-cycle burst waveforms.

Each next trigger is generated after the waveform has crossed the trigger level N times in the direction that complies with the selected trigger slope.

To select N-Cycle triggering, continue from step 3 (page

61) again:

ENTER

Observe that the key labels at the bottom of the screen have been changed to allow further selection of specific N-Cycle trigger settings:

Select On Trigger or Single Shot, jump to Trigger Filter.

Select a Trigger Filter or set it Off.

Set NCycle to On

Set the number of cycles N

8 Adjust the trigger level

Traces with N-Cycle triggering (N=2) and without N-Cycle triggering are shown in Figure 31.

Figure 31. N-Cycle triggering

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Triggering on External Waveforms (Model 190M-2)

Use external triggering when you want to display waveforms on inputs A and B while triggering on a third signal. You can choose external triggering with automatic triggering or with edge triggering.

1 Supply a signal to the red and black 4-mm

banana jack inputs.

In this example you continue from the Trigger on Edges example. To choose the external signal as trigger source, continue as follows:

TRIGGER

Display the TRIGGER (On Edges) key labels.

Select Ext (external) edge trigger.

Observe that the key labels at the bottom of the screen have been adapted to allow selection of two different external trigger levels: 0.12 V and 1.2 V:

From this point the trigger level is fixed and is compatible with logic signals.

Select 1.2V under the Ext LEVEL label.

Triggering on Waveforms Triggering on Video Signals

Triggering on Video Signals

To trigger on a video signal, first select the standard of the video signal you are going to measure:

1 Apply a video signal to the red input A.

TRIGGER

Display the TRIGGER key labels.

Open the Trigger Options menu.

ENTER

Select Video on A … to open the

TRIGGER ON VIDEO menu.

Select positive signal polarity for video signals with negative going sync pulses.

Figure 32. Measuring Interlaced Video Signals

ENTER

Trigger level and slope are now fixed.

Observe that the key labels at the bottom of the screen have been changed to allow further selection of specific video trigger settings.

Select a video standard or Non interlaced… and return.

If you select Non interlaced a scan rate selection menu will open.

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Triggering on Video Frames

Use FIELD 1 or FIELD 2 to trigger either on the first half of the frame (odd) or on the second half of the frame (even).To trigger on the second half of the frame, do the following:

The signal part of the even field is displayed on the screen.

Choose FIELD 2.

Triggering on Video Lines

Use ALL LINES to trigger on all line synchronization pulses (horizontal synchronization).

The signal of one line is displayed on the screen. The screen is updated with the signal of the next line immediately after the test tool triggers on the horizontal synchronization pulse.

To view a specific video line in more detail, you can select the line number. For example, to measure on video line 123, continue from step 6 as follows:

8 Select number 123.

The signal of line 123 is displayed on the screen. Observe that the status line now also shows the selected line number. The screen is continuously updated with the signal of line 123.

Choose ALL LINES.

Enable video line selection.

Triggering on Waveforms Triggering on Pulses

Triggering on Pulses

Use pulse width triggering to isolate and display specific pulses that you can qualify by time, such as glitches, missing pulses, bursts or signal dropouts.

Detecting Narrow Pulses

To set the test tool to trigger on narrow positive pulses shorter than 5 ms, do the following:

1 Apply a video signal to the red input A.

TRIGGER

ENTER

Display the TRIGGER key labels.

Open the TRIGGER OPTIONS menu.

Select Pulse Width on A... to open the trigger on pulse width menu.

ENTER

The test tool is now prepared to trigger on narrow pulses only. Observe that the trigger key labels at the bottom of the screen have been adapted to set the pulse conditions:

To set the pulse width to 5 ms, do the following:

9 Select 5 ms.

All narrow positive pulses shorter than 5 ms are now displayed on the screen. (See Figure 33).

Select the positive pulse icon, then jump to Condition.

Select <t, then jump to Update.

Select On Trigger.

Enable the arrow keys to adjust the pulse width.

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Tip

The test tool stores all triggered screens in the replay memory. For example, if you setup your triggering for glitches, you can capture 100 glitches with time stamps. Use the look at all the stored glitches.

Figure 33. Triggering on Narrow Glitches

REPLAY key to

Finding Missing Pulses

The next example covers finding missing pulses in a train of positive pulses. In this example it is assumed that the pulses have a 100 ms distance between the rising edges. If the time accidently increases to 200 ms, a pulse is missing. To set the test tool to trigger on such missing pulses, let it trigger on gaps bigger than about 110 ms.

Do the following:

TRIGGER

ENTER

Display the TRIGGER key labels.

Open the TRIGGER OPTIONS menu.

Select Pulse Width on A... to open the TRIGGER ON PULSE WIDTH menu.

Triggering on Waveforms Triggering on Pulses

ENTER

The test tool is now prepared to trigger on pulses that are more than a selectable time in duration. Observe that the trigger menu at the bottom of the screen has been adapted to set the pulse condition:

To set the pulse width to 110 ms, continue as follows:

Select the positive pulse icon to trigger on a positive pulse, then jump to Condition:

Select >t, then jump to Update:

Select On Trigger and exit the menu.

Enable the arrow keys to adjust the pulse width.

Select 110 ms.

Figure 34. Triggering on Missing Pulses

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Chapter 5

Using Memory and PC

About this Chapter

This chapter provides a step-by-step introduction to the general functions of the test tool that can be used in the three main modes: Scope, Meter, or Recorder. You will find information on computer communication at the end of this chapter.

Using the USB Ports

The test tool is provided with two USB ports. Only one can be used at a time:

• a USB-host port to connect an external flash memory

drive (‘USB-stick’) for data storage.

• a mini-USB-B port which allows you to connect the

test tool to a PC for remote control and data transfer under PC-control, see Using FlukeView

on page 80.

The ports are fully isolated from the input channels and are covered with dust covers when not in use.

USB stick

Figure 35. Test Tool USB Connections

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Saving and Recalling

You can:

• Save screens and setups to internal memory, and

recall them again from memory. The test tool has 15 ‘screen and setup’ memories, 2 ‘record and setup’ memories, and 1 screen image memory. See also Table 1.

• Save up to 256 screens and setups to a USB memory

device, and recall them again from memory.

• Name saved screens and setups according to your

own preferences.

• Recall screens and recordings to analyze the screen

image at a later date.

• Recall a setup to continue a measurement with the

recalled operating configuration.

Notes

Saved data are stored in non-volatile Flash memory.

Not saved instrument data are stored in RAM memory and will be kept at least 30 seconds when the battery is removed when no power is supplied via the BC190 power adapter.

Table 1. Test Tool Internal Memory

Mode Memory locations

190M-2 30x 10x 9x

190M-4 15x 2x 1x

METER Setup +

1 screen

SCOPE Setup +

1 screen

SCOPE REC - Setup +

TRENDPLOT - Setup +

- Screen image

Setup +

100 replay

screens

record data

trendplot data

Screen image

In persistence mode the most recently written trace will be saved, not all persistence traces.

In the displayed file list of stored screens and setups the following symbols are used:

setup + 1 screen

setup + replay screens/record data

setup + trendplot data

screen image (imagexxx.bmp)

Using Memory and PC Saving and Recalling

Saving Screens with Associated Setups

To save for example a screen+setup in Scope mode, do the following:

From this point the screen is frozen.

SAVE

Display the SAVE key labels.

Open the SAVE menu.

Observe the number of available and used memory locations.

In METER mode the SAVE AS menu will be shown now as only a setup+screen can be saved, see step 4.

Select the target memory INT (internal memory) or USB (USB device).

Observe the new SAVE menu if you select USB.

ENTER

Select Screen+Setup and open the SAVE AS menu.

Below Save As: the default name + serial number and OK SAVE are already selected.

To modify the name for this particular Screen+Setup or to

ENTER

To resume your measurements press

modify the default name see below ‘Editing Names’.

Save the Screen+setup.

HOLD

RUN

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All memories in use

If no free memory locations are available a message pops up that proposes to you to overwrite the oldest data set. Do one of the following:

If you don’t want to overwrite the oldest data set,

- press

then delete one or more memory

locations, and save again.

If you want to overwrite the oldest data set,

- press

Editing names

To name the screen+setup according to your own preferences, continue from step 4 as follows:

ENTER

Open the EDIT NAME menu

Skip to a new character position.

Select another character and press ENTER to accept your choice.

Repeat 6 and 7 until done.

ENTER

Accept the name and return to the

SAVE AS menu.

Highlight OK SAVE to save the actual screen using the edited name.

To modify the default name generated by the test tool, continue from step 8 as follows:

ENTER

Highlight SET DEFAULT to save the new default name.

Highlight OK SAVE to save the actual screen using the new default name.

Using Memory and PC Saving and Recalling

Notes

The ‘record+setup’ memory locations store more than just what is visible on the screen. In TrendPlot or Scope Record mode the full recording is saved. In scope mode you can save all 100 replay screens in a single record+setup memory location. The table below shows what you can store for the various test tool modes.

To save a TrendPlot press STOP first.

Saving Screens in .bmp Format (Print Screen)

To save a screen in bitmap (.bmp) format, do the following:

The file is saved using a fixed name (IMAGE) and a serial number, for example IMAGE004.bmp.

If no free memory locations are available a message pops up that proposes to you to overwrite the oldest data set. Do one of the following:

If you don’t want to overwrite the oldest data set,

- press

locations, and save again.

If you want to overwrite the oldest data set,

- press

SAVE

Display the SAVE key labels.

Save the screen to:

− Internal memory (INT) if no

USB device is connected

− a USB device if connected.

, then delete one or more memory

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Deleting Screens with Associated Setups

To delete a screen and associated setup, do the following:

SAVE

ENTER

Display the SAVE key labels.

Open the FILE OPTIONS menu.

Select the source, internal memory (INT) or a USB device.

Highlight DELETE.

Accept your choice and jump to the filename field.

Select the file to be deleted,

Select all files for deletion.

Delete the selected files.

Recalling Screens with Associated Setups

To recall a screen+setup, do the following:

SAVE

4 Highlight DATA.

ENTER

6 Select the file to be recalled.

ENTER

Observe that the recalled waveform is displayed and that

HOLD appears on the screen. From this point you can use

cursors and zoom for analysis or you can print the recalled screen.

Display the SAVE key labels.

Open the RECALL menu.

Select the source, internal memory (INT) or a USB device.

Accept your choice and jump to the filename field.

Recall the selected screen+setup.

Using Memory and PC Saving and Recalling

To recall a screen as a reference waveform to compare it to an actually measured waveform, see Chapter 1 ‘Comparing Waveforms’.

Recalling a Setup Configuration

To recall a setup configuration, do the following:

From this point you continue in the new operating configuration.

SAVE

ENTER

Display the SAVE key labels.

Open the RECALL menu.

Select the source, internal memory (INT) or a USB device.

Highlight SETUP.

Accept your choice and jump to the filename field.

Select the file to be recalled,

Recall the selected setup.

Viewing Stored Screens

To scroll through the memories while looking at the stored screens, do the following:

5 Highlight a file.

7 Scroll through all stored screens.

SAVE

ENTER

Display the SAVE key labels.

Open the RECALL menu.

Select the source, internal memory (INT) or a USB device.

Jump to the filename field.

View the screen, and open the viewer.

Print screen, saves the screen to USB device (if connected) or internal memory.

Exit the View mode.

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Note:

In the VIEW mode the replay screens of a saved ‘record+setup’ cannot be viewed! Only the screen at the instant of saving can be reviewed in this way. To see all replay screens recall them from memory using the RECALL option.

Renaming Stored Screens and Setup Files

To modify the name of stored files, do the following:

SAVE

ENTER

Display the SAVE key labels.

Open the FILE OPTIONS menu.

Select the source, internal memory (INT) or a USB device.

Highlight RENAME.

Accept your choice and jump to the filename field.

Highlight the file to be renamed.

ENTER

Open the RENAME menu.

Skip to a new character position.

Select another character.

Repeat 8 and 9 until done.

Accept the name and return to the

RENAME menu.

Using Memory and PC Saving and Recalling

Copying-Moving Stored Screens and Setup Files

You can copy or move a file from internal memory to a USB device or from a USB device to internal memory.

To copy or to move a file, do the following:

SAVE

ENTER

Display the SAVE key labels.

Open the FILE OPTIONS menu.

Select the source, internal memory (INT) or a USB device. The other memory will become the destination.

Highlight COPY to copy or MOVE to move (copy and delete source) a file.

Accept your choice and jump to the filename field.

Select the file to be copied or moved,

Or Select all files.

ENTER

Copy or delete the selected files.

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Using FlukeView® ScopeMeter Software

With FlukeView® ScopeMeter software you can upload waveform data and screen bitmaps to your PC or notebook computer for further processing.

USB drivers for the test tool and a FlukeView are on the CD-ROM included in the shipment.

Connecting to a Computer

To connect the test tool to a PC or notebook computer and use the FlukeView ScopeMeter software for Windows (SW90W), do the following:

 Use a USB-A to mini-USB-B interface cable to

connect a computer to the mini USB PORT of the test tool (See Figure 36).

 Install the test tool USB drivers, see Appendix A.

 Install the FlukeView

information about installing and using FlukeView ScopeMeter software see the FlukeView ScopeMeter Users Manual on the CD ROM.

ScopeMeter software. For

Software

Figure 36. Connecting to a Computer

Notes

− The test tool input channels are electrically

isolated from the USB port.

− Remote control and data transfer via mini-

USB is not possible while saving or recalling data to or from a USB memory device.

Chapter 6

Tips

About this Chapter

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

Using the Standard Accessories

The following illustrations show the use of the standard accessories such as voltage probes, test leads, and the various clips.

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Figure 37. HF Voltage Probe Connection Using

Ground Spring

XWWarning

To avoid electrical shock or fire, do not connect the ground spring to voltages higher than 30 Vrms from earth ground.

Figure 38. Electronic Connections for Measurements

Using Hook Clips and Alligator Clip Grounding

XWWarning

To avoid electrical shock, re-apply the insulation sleeve (Fig. 1 item (e)) over the probe tip when the hook clip is not used. This also avoids the risk of accidently interconnecting the reference contact of multiple probes when ground leads are connected.

Tips Using the Independently Floating Isolated Inputs

Using the Independently Floating Isolated Inputs

You can use the independently floating isolated inputs to measure signals that are independently floating from each other.

Independently floating isolated inputs offer additional safety and measurement capabilities compared to inputs with common references or grounds.

Measuring Using Independently Floating Isolated Inputs

The test tool has independently floating isolated inputs. Each input section (A, B, C, D – A, B, METER INPUT) has its own signal input and its own reference input. The reference input of each input section is electrically isolated from the reference inputs of the other input sections. The isolated input architecture makes the test tool about as versatile as having four independent instruments. The advantages of having independently floating isolated inputs are:

• It allows simultaneous measurement of independently

floating signals.

• Additional safety. Since the commons are not directly

connected, the chance of causing short circuit when measuring multiple signals is greatly reduced.

• Additional safety. When measuring in systems with

multiple grounds, the ground currents induced are kept to a minimum.

Because the references are not connected together inside the test tool, each reference of the used inputs must be connected to a reference voltage.

Independently floating isolated inputs are still coupled by parasitic capacitance. This can occur between the input references and the environment, and between the input references mutually (see Figure 39). For this reason, you should connect the references to a system ground or another stable voltage. If the reference of an input is connected to a high speed and / or high voltage signal, you should be aware of parasitic capacitance. (See Figure 39 , Figure 41, Figure 42 and Figure 43.)

Note

The input channels are electrically isolated from the USB port and from the power adapter input.

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Figure 39. Parasitic capacitance between probes,

instrument and environment

XWWarning

To avoid electrical shock, always use the insulation sleeve (Fig. 1 item (e)) on the probe tip when using the probe reference (ground) lead. The voltage applied to the reference lead is also present on the ground ring near the probe tip, see Figure 40.

Figure 40. Probe Tip

Tips

Using the Independently Floating Isolated Inputs

MOTION/MOTOR CONTROLLER

DIGITAL GROUND

DC BUS

Figure 41. Parasitic capacitance between analog and

digital reference

NALOG INPUT DIGITAL CONTROLLER

DIGITAL

ANALOG

GROUND

Figure 42. Correct connection of reference leads

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ANALOG INPUT DIGITAL CONTROLLER

DIGITAL

ANALOG GROUND

GROUND

Figure 43. Wrong connection of reference leads

Noise that is picked up by reference lead D can be transmitted by parasitic capacitance to the analog input amplifier.

Using the Tilt Stand

The test tool is equipped with a tilt stand, allowing viewing from an angle while placed on a table. The typical position is shown in Figure 44.

Kensington lock support

Power adapter input

Figure 44. Using the Tilt Stand

Note

An optional Hanging Hook, ordering code HH290, can be attached to the rear of the test tool. The hook enables you to hang the test tool at a convenient viewing position, for example a cabinet door or a separation wall.

Tips Kensington®-lock

Kensington®-lock

The test tool is provided with a security slot compatible with a Kensington

The Kensington Security Slot along with a locking cable provides physical security against thefts of opportunity. Locking cables can be obtained from, for example, laptop computer accessory dealers.

lock, see Figure 44.

Attaching the Hanging Strap

A hanging strap is supplied with the test tool. The figure below shows how to attach the strap correctly to the test tool.

Figure 45. Attaching the Hanging Strap

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Resetting the Test Tool

If you want to reset the test tool to the factory settings, without clearing the memories, do the following:

Turn the test tool off.

USER

Press and hold.

Press and release.

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

USER

Release.

Suppressing Key Labels and Menus

You can close a menu or hide key label at any time:

CLEAR

To display menus or key labels, press one of the yellow menu keys, e.g. the

You can also close a menu using the CLOSE.

Hide any key label, press again to display the key label again (toggle function).

A displayed menu will be closed.

SCOPE key.

softkey

Tips Changing the Information Language

Changing the Information Language

During operation of the test tool, messages may appear at the bottom of the screen. You can select the language in which these messages are displayed. In this example you can select English or French. To change the language from English to French, do the following:

USER

Display the USER key labels.

Open the LANGUAGE SELECT menu.

ENTER

Highlight FRENCH.

Accept French as the language.

Adjusting the Contrast and Brightness

To adjust the contrast and backlight brightness, do the following:

3 Adjust the contrast of the screen.

To save battery power, the test tool is in economic brightness mode when operated on the battery. The high brightness intensity increases when you connect the power adapter.

USER

The new contrast and brightness are stored until a new adjustment is made.

Using dimmed light lengthens maximum battery power operation. See Chapter 8 ‘Specifications’, section ‘Miscellaneous’.

Display the USER key labels.

Enable the arrow keys for manual contrast and backlight adjustment.

Change the backlight.

Note

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Changing Date and Time

The test tool has a date and time clock. For example, to change the date to 19 April, 2012, do the following:

USER

ENTER

Display the USER key labels.

Open the USER OPTIONS menu.

Open the DATE ADJUST menu.

Choose 2012, jump to Month:

Choose 04, jump to Day:

Choose 19, jump to Format:

ENTER

You can change the time in a similar way by opening the

Time Adjust… menu (steps 2 and 3.)

Saving Battery Life

When operated on the battery, the test tool conserves power by shutting itself down. If you have not pressed a key for at least 30 minutes, the test tool turns itself off automatically.

Automatic power shutdown will not occur if TrendPlot or Scope Record is on, but the backlight will dim. Recording will continue even if the battery is low, and retention of memories is not jeopardized.

To save battery life without automatic power shutdown you can use the display AUTO-off option. The display will be turned off after the selected time (30 seconds or 5 minutes).

If the power adapter is connected, there is no automatic power shutdown, and the display AUTO-off function is inactive.

Choose DD/MM/YY, accept the new date.

Note

Fluke 190M User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents

Safety

Introduction

Unpacking the Test Tool Kit

Safety Information: Read First

If Safety Features are Impaired

Safe Use of Li-ion Battery Pack

Storing the Battery Pack Safely

Using the Battery Pack Safely

Transporting the Battery Pack Safely

Disposing the Battery Pack Safely

About this Chapter

Powering the Test Tool

Using the Scope and Meter

Resetting the Test Tool

Navigating a Menu

Hiding Key Labels and Menus

Key Illumination

Input Connections

Making Input Connections

Adjusting the Probe Type Settings

Selecting an Input Channel

Displaying an Unknown Signal with Connect-and-View™

Making Automatic Scope Measurements

Freezing the Screen

Using Average, Persistence and Glitch Capture

Using Average for Smoothing Waveforms

Smart average

Using Persistence, Envelope and Dot-Join to Display Waveforms

Displaying Glitches

Suppressing High Frequency Noise

Acquiring Waveforms

Setting the Acquisition Speed and Waveform Memory Depth

Selecting AC-Coupling

Reversing the Polarity of the Displayed Waveform

Variable Input Sensitivity

Working with Noisy Waveforms

Using Mathematics Functions +, -, x, XY-mode

Using Mathematics Function Spectrum (FFT)

Comparing Waveforms

Pass - Fail Testing

Analyzing Waveforms

Making Automatic Meter Measurements (Model 190M-4)

Selecting a Meter Measurement

Making Relative Meter Measurements

Making Multimeter Measurements (Model 190M-2)

Making Meter Connections

Measuring Resistance Values

Making a Current Measurement

Selecting Auto/Manual Ranges

Making Relative Meter Measurements

About this Chapter

Opening the Recorder Main Menu

Using The Recorder Functions

Plotting Measurements Over Time (TrendPlot™)

Starting a TrendPlot Function

Displaying Recorded Data

Changing the Recorder Options

Turning Off the TrendPlot Display

Recording Scope Waveforms In Deep Memory (Scope Record)

Starting a Scope Record Function

Displaying Recorded Data

Using Scope Record in Single Sweep Mode

Using Triggering to Start or Stop Scope Record

Analyzing a TrendPlot or Scope Record

Using Replay, Zoom and Cursors

About this Chapter

Replaying the 100 Most Recent Scope Screens

Replaying Step-by-Step

Replaying Continuously

Turning Off the Replay Function

Capturing 100 Intermittents Automatically

Zooming in on a Waveform

Turning Off the Zoom Function

Making Cursor Measurements

Using Horizontal Cursors on a Waveform