Measurement eZ-Analyst User Manual

USER’S MANUAL

eZ-Analyst

1086-0922 rev 14.1

IOtech

25971 Cannon Road

Cleveland, OH 44146-1833

(440) 439-4091

Fax: (440) 439-4093

sales@iotech.com

productsupport@iotech.com

www.iotech.com

*372165B-01*

372165B-01

eZ-Analyst

Real-Time Vibration & Acoustic Analysis Software

Manual Layout

This document is a reference manual for eZ-Analyst, its Menu options, associated Toolbar buttons, and resulting GUI screen images. When deemed beneficial, examples were placed to supplement the primary material. The document discusses eZ-Analyst in relation to ZonicBook, WaveBook, and IOtech 600 Series applications. Differences in functionality are pointed out when of importance to the user.

Ch 1 – Software Installation

Ch 2 – An Introduction to eZ-Analyst Discusses eZ-Analyst’s measurement and

playback modes.

Ch 3 – Menus discusses the following menus: Task, File, Control, Export, and Window.

The Edit Menu is discussed in chapter 4.

Ch 4 – Edit Menu discusses the following windows: Configuration, Playback Setup, Display

Preferences, and Output Channel Setup. Note that the 640e and 640u analyzers of a relatively extensive section pertaining to output waveforms.

Ch 5 – Toolbar Buttons identifies and shows the location of the toolbar buttons and

provides a brief synopsis of their purpose.

WaveBooks ZonicBook/618E IOtech 600 Series

Ch 6 – Interactive Features of the Plot Display Window explains how to change plot

display characteristics, including display functions, by using the window’s interactive features. The chapter includes a section on cursor types and annotation options.

Ch 7 – Waterfalls, Order Tracking, & Slice Views discusses these display options

available to eZ-Analyst users.

Appendix A – Keyboard Controls for eZ-Analyst identifies keys for controlling plot

display, menus, windows, and record/playback functions.

Glossary

Check the README.TXT file, if present, for information that may not have been available at the time this manual went to press.

eZ-Analyst 878193 iii

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iv 878193 eZ-Analyst

Manual Layout …… iii

Ch 1 – Software Installation

WaveBooks …… 1-1 ZonicBook/618E …… 1-3 IOtech 600 Series …… 1-5

Ch 2 – An Introduction to eZ-Analyst

Features …… 2-2 Measurement Mode …… 2-5 Playback Mode …… 2-5 A Word about Configuration …… 2-5

Ch 3 – Menus

Task Menu …… 3-2 File Menu …… 3-10 Control Menu …… 3-10 Export Menu …… 3-11 Window Menu …… 3-13

Edit Menu …… Waterfalls, Order Tracking, & Slice Views ……

Ch 4 – Edit Menu

Configuration Window …… 4-2

Analyzer Tab …… 4-4 Input Channels Tab …… 4-15 Analog Input Channels …..4-15

Tach Channels ….. 4-18

FFT Setup Tab …… 4-23 Recording Setup Tab …… 4-31 Block Rejection Tab …… 4-35 Octave Setup Tab…… 4-37 Preferences Tab …… 4-39

Output Channel Setup …… 4-43

ZonicBook/618E and WaveBook Waveform Output …… 4-45 640u and 640e Waveform Output …… 4-46

see chapter 4

see chapter 7

Playback Setup Window …… 4-56 Display Preferences Window …… 4-58

Ch 5 – Toolbar Buttons

Continued . . .

eZ-Analyst 878193 v

Ch 6 – Interactive Features of the Plot Display Window

Introduction …… 6-1 Adding and Removing Channels …… 6-1 Using Cursors …… 6-2 Additional Functionality …… 6-6

Copy …… 6-6 Strip Charts …… 6-7 XLS Overlay (Overlay of Excel Files) …… 6-8 Displaying Channel Pairs …… 6-10 Changing the Display Range …… 6-10 Changing Format, Scale, and Grid …… 6-12

Ch 7 – Waterfalls, Order Tracking, & Slice Views

3D Waterfalls …… 7-2 Order Tracking …… 7-7 Selecting Displays …… 7-8 Using Spectrum Cursors …… 7-11

Appendix A – Keyboard Controls for eZ-Analyst

Glossary

vi 878193 eZ-Analyst

Software Installation 1

Certain WBK options are not supported by eZ-Analyst. If you are using WBK options with WaveBook and intend to use eZ-Analyst, refer to the WBK support table on page 1-2.

Remove any previous-installed versions of WaveBook software before installing a new version.

WaveBooks …… 1-1 ZonicBook/618E …… 1-3 IOtech 600 Series …… 1-5

WaveBooks

System Requirements

Before setting up the hardware or installing the software, verify that you have the following items.

WaveBook data acquisition system Power supply with cord For WaveBook/516E: Ethernet patch cable Dynamic Signal Analysis CD License Key for eZ-Analyst

In addition, verify that your computer meets the following minimum requirements.

Monitor: SVGA, 1024 x 768 resolution For WaveBook/516E: 10/100BaseT Ethernet port Windows 2000 SP4 and Windows XP users:

Intel™ Pentium, 1 GHz or equivalent; 512 MB memory; 10 GB disk space

Windows Vista users:

PC must be Windows Vista Premium Ready

Optional, but recommended:

EPP (Enhanced Parallel Port), or ECP (Extended Capabilities Port)

Software Installation for WaveBooks

1. Start Windows.

2. Close all running applications.

3. Insert the Dynamic Signal Analysis CD into your CD-ROM drive and wait for the CD to

auto-run.

If the CD does not start on its own:

(a) click the desktop’s <Start> button (b) choose the Run command (c) select the CD-ROM drive, then select the setup.exe file. (d) click <OK>.

An Opening Screen will appear.

eZ-Analyst 978891 Software Installation, WaveBooks 1-1

Reference Notes:

 Adobe Acrobat PDF versions of documents pertaining to WaveBook are

included on the Dynamic Signal Analysis CD and are automatically installed onto your PC’s hard-drive as a part of product support at the time of software installation. The default location is the Programs group, which can be accessed via the Windows Desktop Start Menu.

 After your software is installed you can setup your WaveBook device and

connect it to the host computer. Instructions for Hardware Setup are included

in your WaveBook User’s Manual.

4. Click the <ENTER SETUP> button.

5. From the hardware selection screen [which follows a licensing agreement], select

WaveBook Systems from the drop-down list and follow the on-screen instructions.

WBK Support for WaveBooks using eZ-Analyst

WBK Option Supported

WBK10A – Analog Expansion Module - no WBK11A – Simultaneous Sample & Hold (SSH) Card  WBK12A and WBK13A – Programmable Filter Cards  WBK14 – Dynamic Signal Conditioning Module  WBK15 – 5B Isolated Signal Conditioning Module - no WBK16 – Strain Gage Module - no WBK17 – Counter-Input Module, with Quadrature Encoder Support - no WBK18 – Dynamic Signal Conditioning Module  WBK20A – PCMCIA/EPP Interface Card and Cable  WBK21 – ISA/EPP Interface Plug-In Board  WBK23 – PCI/EPP Interface Plug-In Board  WBK25 – Ethernet Interface Module  WBK30 – WaveBook Memory Options  WBK40 and WBK41 – Thermocouple and Multi-Function I/O Modules - no WBK61 and WBK62 – High Voltage Adapters - no -

Information pertaining to these products is included in The WBK Options Manual, p/n 489-0902.

1-2 Software Installation, WaveBooks 978891 eZ-Analyst

ZonicBook/618E

Remove any previous-installed versions of eZ-Analyst software before installing a new version.

WBK Support

When used with ZonicBook/618E, eZ-Analyst supports WBK18 and WBK30.

System Requirements

Before setting up the hardware or installing the software, verify that you have the following items.

ZonicBook/618E Data Acquisition System Power Supply with cord Dynamic Signal Analysis CD License Key for eZ-Analyst Ethernet Patch Cable Dynamic Signal Analysis CD License Key for eZ-Analyst

In addition, verify that your computer system meets the following minimum requirements.

Monitor: SVGA, 1024 x 768 screen resolution Ethernet jack [on PC or on a hub connected to the Ethernet] Windows 2000 SP4 and Windows XP users:

PC with Intel™ Pentium, 1 GHz or equivalent; 512 MB memory; 10 GB disk space

Windows Vista users:

PC must be Windows Vista Premium Ready

Software Installation for ZonicBook/618E

1. Start Windows.

2. Close all running applications.

3. Insert the Dynamic Signal Analysis CD into your CD-ROM drive and wait for the CD

to auto-run.

If the CD does not start on its own:

(a) click the desktop’s <Start> button (b) choose the Run command (c) select the CD-ROM drive, then select the setup.exe file. (d) click <OK>.

An Opening Screen will appear.

4. Click the <ENTER SETUP> button.

5. From the hardware selection screen [which follows a licensing agreement], select

ZonicBook/618E from the drop-down list and follow the on-screen instructions.

eZ-Analyst 978891 Software Installation, ZonicBook/618E 1-3

Reference Notes:

o Adobe Acrobat PDF versions of documents pertaining to ZonicBook/618E

are included on the Dynamic Signal Analysis CD and are automatically installed onto your PC’s hard-drive as a part of product support at the time of software installation. The default location is the Programs group, which can be accessed via the Windows Desktop Start Menu.

o After your software is installed you can setup your ZonicBook/618 and

connect it to the host computer. Instructions are included in the ZonicBook/618E User’s Manual, p/n 1106-0901.

1-4 Software Installation, ZonicBook/618E 978891 eZ-Analyst

IOtech 600 Series

For a 640u or 650u verify that you have the following items.

640u or 650u USB Cable Dynamic Signal Analysis CD License Key for eZ-Analyst Windows 2000 SP4 and Windows XP users:

PC with Intel™ Pentium, 1 GHz or equivalent; 512 MB memory; 10 GB disk space

Windows Vista users:

PC must be Windows Vista Premium Ready

For a 640e or 650e verify that you have the following items.

640e or 650e TR-2U Power Supply Ethernet Patch Cable Dynamic Signal Analysis CD License Keys for eZ-Analyst Windows 2000 SP4 and Windows XP users:

PC with Intel™ Pentium, 1 GHz or equivalent; 512 MB memory; 10 GB disk space

Windows Vista users:

PC must be Windows Vista Premium Ready

To Install the Software (Applies to all 600 Series models)

1. Close all running applications on the host PC.

2. Insert the Dynamic Signal Analysis CD into your CD-ROM drive and wait for the CD to auto-run.

An Opening Screen will appear.

4. Click the <ENTER SETUP> button.

5. From the hardware selection screen [which follows a licensing agreement], select the applicable

device (640e, 640u, 650e, or 650u) from the drop-down list and follow the on-screen instructions.

Reference Notes:

o After the software is installed you can setup your 600 Series analyzer and connect it to the

host computer. Instructions are included in a Quick Start shipped with the device. The Dynamic Signal Analysis CD includes PDF versions of the 600 Series quick starts and a user’s manual.

o Adobe Acrobat PDF versions of documents pertaining to IOtech 600 Series analyzers are

included on the Dynamic Signal Analysis CD. In addition, they are automatically installed onto your PC’s hard-drive as a part of product support at the time of software installation. The default location is the Programs group, which can be accessed via the Windows Desktop Start Menu.

Dynamic Signal Analyzers for Vibration Analysis & Monitoring

640u and 650u (USB2.0)

640e and 650e (Ethernet)

eZ-Analyst 978891 Software Installation, 600 Series 1-3

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1-4 Software Installation, 600 Series 978891 eZ-Analyst

An Introduction to eZ-Analyst 2

Features …… 2-1 Measurement Mode …… 2-4 Playback Mode …… 2-4 A Word About Configuration …… 2-5

eZ-Analyst is the result of more than ten years of software development and customer input. This software adds realtime continuous and transient data acquisition to IOtech 600

Series, WaveBooks, and ZonicBook/618E dynamic signal analyzers. Analysis can be in the time, frequency, or order

domain.

eZ-Analyst is operated through a series of setup windows that display only the information deemed important to your test. Acquisition configuration involves selecting desired acquisition parameters from user-friendly menus.

Features

• Real-time FFT analysis

• Easy-to-use graphical user interface provides fast setup

• Large number of display options: Time Waveform, Spectrum, Auto Spectrum,

FRF, Cross, PSD, Transfer Function, Coherence, Octave, and Waterfall

• Order Normalization and Order Tracked Plots

• Multiple Plot Overlays using exported data files

• Export to Excel, ME Scope, SMS Star, or UFF Type 58 ASCII or Binary

• Save/Recall display setups with multiple display windows and overlays

• Wide selection of real-time analysis features, including integration/differentiation

averaging, and much more

eZ-Analyst Series 878193 Introduction 2-1

Playback / Record Status

Acquisition Graph Edit Input Channel Status Toolbar Config. Window (Open/Close)

Analog Input Tach Channels Channels

Averaging Status

Slider

Date/Time

Channel Identifiers

Four Function View Windows in Playback Mode

eZ-Analyst is a graphical analysis application that can be used to collect, analyze, record, and play back recorded data. With use of a 600 Series, ZonicBook/618E, or WaveBook analyzer, ez-Analyst can collect and display multiple channels of data in real-time. The graphical displays can consist not only of the raw time-domain data, but also plots of frequency domain data. For example, real time FFT (Fast Fourier Transform) plots.

Data that is recorded to disk-file is in the raw time domain and can be played back for additional analysis time and time again. For example, a raw signal can be played back overand-over using different FFT Window algorithms to manipulate the signal. Once the desired results have been achieved, the new data can be exported to a different file and format, while preserving the original file. In addition, the playback capability does not require the presence of analyzer hardware.

2-2 Introduction 878193 eZ-Analyst Series

You can select the Measurement Mode or the Playback mode from either the Task pull-down menu, or by using the <Change Task Mode> button [the first button in the Task Bar]. The Task Tool Bar automatically changes to accommodate the selected mode.

1 Status

Message

2 Acquisition

Status

3 Date/Time Provides time in the following format: Day-Month-Year, Hour: Minutes: Seconds.

4 Slider Bar The sliding bar indicates the relative location of the displayed data. The record number and

5 Playback /

Recording Status

A message regarding the status, if applicable, will be displayed in this area. Examples of possible messages are: Double Hammer Rejected, Overload Rejected, Reject (Manual Reject Mode), and GAP.

Indicates the status of the acquisition.

Waiting Trigger indicates that a trigger has not been recognized since the Acquire button

was clicked.

Triggered indicates eZ-Analyst is capturing and processing data based on the setup

conditions.

Acquiring indicates that data is being acquired, but is not being recorded to disk.

Recording indicates that data is being recorded-to-disk, as it is being acquired.

Completed indicates eZ-Analyst has finished processing the frame of data.

The “Averages Count” increments by 1 at this time.

When in Record Mode the current time is displayed. When in Playback Mode the measured time is displayed.

the number of records in the file are listed to the right. The slider can be used to quickly locate a specific record. Note that both the Record and the Playback mode make use of the slider bar.

Displays the current record and the total number of records to be collected. Time equivalents are included in parenthesis

Example, 12/25 means that the record currently displayed is the 12 25 records.

record, out of a total of

Averaging

Status

6 Channels Each numbered box represents a channel. Drag a channel [channel-box] to the plot area to

This field shows when the Averaging Mode is used, during the Scope Mode or the Playback Mode. A display of 2/5 would indicate that 2 averages have been performed out of a total of 5 averages to be performed.

have its data displayed. That channel’s data is plotted in a distinct color and a color-coded channel button is displayed to the right of the plot.

Reference channels are bold and italic. The underlined channel is the current reference channel. Use the right mouse button to select current reference channel. Reference channels are specified in the Configuration accessed via the Edit Menu.

eZ-Analyst Series 878193 Introduction 2-3

Measurement Mode

The Measurement Mode is an active data-collecting mode, which, for that reason, requires the use of data acquisition hardware. The Measurement Mode can only be selected if analyzer hardware is present (600 Series. ZonicBook/618E, or WaveBook).

The Measurement Mode acquires data using one of the following three methods: (1) Scope-Continuous, (2) Scope-Single, and (3) Record.

The Scope-Continuous and Scope-Single methods display data, but do not log data. The scope methods are useful for signal validation and checkout. The Record method, in addition to displaying data, logs data-to-disk based on user-defined start and stop criteria.

In addition to being selected from the Task Menu, the Measurement Mode can be selected from the Task Tool Bar by clicking the <Change Task Mode> button while in the Playback Mode. Clicking this button from Measurement Mode will change the task mode tool bar to Playback.

The Measurement Mode is detailed in Chapter 3.

Change Task Mode

Scope-Continuous Scope-Single Record Cursor Lock

Measurement Mode Task Bar

Playback Mode

The Playback Mode does not require the presence of physical hardware. When in Playback, eZ-Analyst is strictly a post-acquisition display and analysis program. Raw time-domain data, that has been recorded-to-disk, can be played back for analysis repeatedly. For example, a raw signal could be played back several times, each time using a different FFT Window algorithm to manipulate the original signal. Once the desired results have been achieved the new data can be exported in a new format and to a different file. The original file can remain unchanged, and kept for future analysis.

To activate the Playback Mode, select Playback/Review on the Task Menu. An option is to click the <Change Task Mode> button (the first button in the tool bar) while in the Measurement Mode. If an analyzer (600 Series, WaveBook, or ZonicBook/618E) is not available eZ-Analyst will automatically enter the Playback mode and will display the data that was most recently recorded to disk.

The Playback Mode is detailed in Chapter 3.

Change Task Mode

Play Backward, Play Backward Stop Play Play Forward One Frame at a Time One Frame at a Time

Playback Mode Task Bar

2-4 Introduction 878193 eZ-Analyst Series

A Word About Configuration

eZ-Analyst makes use of various menus and related windows for the purpose of configuration. Chapter 4 is devoted exclusively to the Edit menu. It is that menu which provides access to the Configuration Window (see figure). It is from the Configuration Window that the majority of acquisition related settings are made.

Configuring Input Channels

eZ-Analyst Series 878193 Introduction 2-5

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2-6 Introduction 878193 eZ-Analyst Series

Menus 3

Task Menu …… 3-1

Measurement Mode…….3-1 Playback Mode…….3-3 Input Range (Auto/Manual)……..3-3 Calibration………..3-5

File Menu …… 3-10 Control Menu …… 3-10 Export Menu …… 3-11 Window Menu …… 3-13 Edit Menu ……

see chapter 4

Waterfalls, Order Tracking, and Frequency

….. see chapter 7

Slices

Foreword

The menus, with exception of the Task Menu and the Edit Menu, are presented in the order that they appear on eZ-Analyst’s main window. The Task Menu is discussed first since it is from this menu that the user (1) selects Measurement Mode or Playback Mode and (2) makes use of the Auto-Ranging feature for input channels.

The Edit Menu is perhaps the most significant of all eZ-Analyst menus and is the most frequently used. Chapter 4 is dedicated solely to the Edit Menu.

Reference Note: Refer to chapter 4 for information regarding the Edit Menu.

Note! The “Edit Menu>Configuration> Preferences tab” section of chapter 4 discusses a Measurement Mode panel. This panel is of importance to file overwrite protection, and should be read (see page 4-38).

Refer to Chapter 7 for details regarding three spectrum only views: 3D Waterfall, Frequency Slice, and Spectrum Display Split View.

Task Menu

Task Menu > Measurement Mode

The Measurement Mode is an active data-collecting mode, which, for that reason, requires the use of data acquisition hardware. The Measurement Mode can only be selected if a 600 Series, ZonicBook/618E, or WaveBook is available; otherwise, eZ-Analyst will run in the Playback Mode.

The Measurement Mode acquires data using one of the following three methods: (1) Scope-Continuous, (2) Scope-Single, and (3) Record.

Change Task Mode

Scope-Continuous Scope-Single Record Cursor Lock

Measurement Mode Task Bar

eZ-Analyst 878193 Menus 3-1

Note that grayed-out buttons indicate that the associated function is not available due to a prerequisite not being met.

Change Task Mode

Changes the task from Measurement Mode to Playback Mode. The Task Bar buttons will change accordingly.

Record

Scope-Continuous

Scope-Single

Signal Generator

Indicates that the Generator is turned ON

Indicates that the Generator is turned OFF

Cursor Lock

Starts recording data-to-disk in continuous time. Note that a ZonicBook or WaveBook must be used to acquire data.

Starts a block-time data acquisition. This scope method is typically used to acquire impact data or to take measurements when data storage is not required.

Starts a single-time run data acquisition. This scope method is typically used to acquire impact data or to take measurements when data storage is not required.

The Signal Generator button toggles between two images and is only active when hardware is present.

The sign wave button indicates that the generator is ON. Clicking on it will turn the generator OFF and the button image will change to a circled red line, indicating that the generator is OFF.

Clicking the button, while the “Off Status” image is present, will turn the Signal Generator back ON, and will change the button to show the sign wave image.

Note: For WaveBook applications you must set the applicable output channel (that is to generate the signal) to “Active.” See, Output Channel Setup in chapter 4.

An active cursor lock button will have the image of an opened or locked padlock. When the padlock is locked (closed), cursors in multiple windows will be synchronized and locked, providing that the windows are of the same time domain, frequency domain, or have the same octave band data.

An opened padlock image indicates that cursors in multiple windows have independent cursor movement, i.e., they are unsynchronized.

Export

This button exports data, if export conditions are set. For details, see the section, Export Menu> Export Function Data.

3-2 Menus 878193 eZ-Analyst

Task Menu > Playback / Review Mode

To activate the Playback Mode, select Playback/Review on the Task Menu. An option is to click the <Change Task Mode> button (the first button in the tool bar) while in the Measurement Mode. Also, note that when a WaveBook or ZonicBook is not available, eZ-Analyst will automatically enter the Playback mode and will display the data that was most recently recorded to disk.

Change Task Mode

Play Backward, Play Backward Stop Play Play Forward One Frame at a Time One Frame at a Time

Playback Mode Task Bar

Task Menu > Input Range (Auto/Manual) *

Auto-ranging is a procedure that automatically sets the input full-scale voltage (FSV) range for input channels. The FSV is set by measuring a representative sample of real-time data. Autoranging is only performed on active channels.

Auto-ranging works best if you supply the maximum expected voltage range for the data that will be captured during the acquisition. Therefore, make the Auto Range Duration long enough to apply a typical signal. In addition, make sure that the Auto Range Analysis Frequency is fast enough to capture the high frequency component. Typically the Analysis Frequency will be the same setting as eZ-Analyst’s Acquisition Analysis Frequency.

AutoRange Dialog Box, from a WaveBook

Note that AutoRange Dialog Boxes for other analyzers are similar.

* You can access the dialog box by clicking the <Auto Range> button, which is located on the

Input Channels tab, when in the “Measurement Mode.”

eZ-Analyst 878193 Menus 3-3

Mode

The Mode panel consists of three radio buttons, which are used to select one of the following range modes: AutoRange(%), AutoRange(V), or ManualRange(V).

Starting FSV

The Starting FSV (Full Scale Voltage) panel consists of three radio buttons, which are used to set the starting FSV to Maximum, Minimum, or Current.

Channel Gauges

The channel gauges, one per channel, display the instantaneous peak value as percentage or voltage, depending on the mode that was selected. The color of the vertical bar has the following significance:

Yellow The signal range is from 0 to the minimum Full-Scale Voltage set in the Auto-range Setup

Green The signal range is from the minimum to the maximum of the Full-Scale Voltage set in the

Red The signal range is over the maximum of the Full-Scale Voltage set in the Auto-range Setup

window.

Auto-range Setup window.

window.

%, FSVF, & Factors Display

Maximum FSV is the high-end limit for the input voltage.

Note that 25.7 V is the highest possible FSV for a ZonicBook Medallion.

Minimum FSV is the low-end limit for the input voltage. In the figure at the right Minimum FSV is set to 0.2 volts.

HI Accept % defines the highest acceptable percentage of peak input voltage for the selected FSV, i.e., Current, Minimum, or Maximum. Thus, if our selected FSV was 0.2 V and we had an upper limit of 90%; then our upper limit in volts would be 0.18 V. An example follows as to how exceeding this value causes a range adjustment.

LO Accept % defines the lowest acceptable percentage of peak input voltage for the selected FSV, i.e., (Current, Minimum, or Maximum). Thus, if our selected FSV was 0.2 V and we had a lower limit of 10%; then our actual low limit in volts would be .02 V.

Incr Factor (Increasing Factor) is the factor by which the Current FSV will increase, should the peak exceed the upper limit. In the figure we see that the Increasing factor is

1.5.

Decr Factor (Decreasing Factor) is the factor by which the Current FSV will decrease, should the peak not reach the lower limit. Keeping the decrease factor at “1” will result in no decrease of the Current FSV. Setting the Decrease Factor to 0.8 would cause the Current FSV to decrease to 80% of its value if the peak fell short of the low limit.

Note: These are the same values that were entered in the Vpeak column in the Channel Setup

window. The values are immediately replaced when the Auto ranging process begins.

3-4 Menus 878193 eZ-Analyst

An Example of Auto-Ranging

Maximum FSV set at 25.7 V Minimum FSV set at 0.2 V Upper Limit set at 90% Lower Limit set at 10% Increasing Factor set at 1.5 Decreasing Factor set at 1

In the first iteration we see that we have a peak of 0.19 V. This falls outside of our band of

0.02 to 0.18 V that was established by our upper and lower limit percentages; i.e., 90% of the Current FSV and 10% of the FSV.

As a result, the Current FSV is increased by a factor of 1.5 (our Increasing Factor) and the Current FSV becomes 0.30 V. Our limits, in volts, also changed since we are now looking at percentages of 0.30 volts instead of the same percentages of 0.20 volts.

In the second iteration of our example, we see a 0.22 volt peak. This value is within our established limits so the Current FSV does not change.

Note 1: If the Capture Mode is the Input Channel (Trigger Mode), the Auto Range process waits for a

trigger.

Note 2: A Start FSV of Minimum or Maximum can selected instead of Current FSV, as in our example.

Minimum FSV is the default.

In this example we have set the radio button for Current FSV instead of Minimum or Maximum (note 2). The starting value, in the example, is 0.20 V.

An Example of Auto-Ranging

Task Menu > Calibration

When calibration is performed, a signal of known Peak level [or RMS value] is supplied to a transducer that is connected to an active input channel. An accelerometer calibrator or piston phone is typically used to generate the calibration signal for vibration sensors and microphones, respectively.

eZ-Analyst includes a Calibration window for selecting the channels to be calibrated and for entering several signal-related parameters. In addition, the calibration is actually started from the window.

Examples:

Accelerometer calibrators typically make use of linear engineering

units and, as their name implies, are used for calibrating accelerometers.

Piston phones are most often used for calibrating microphones. Piston phones typically make use of decibel (dB) engineering units.

eZ-Analyst 878193 Menus 3-5

When you are in “Measurement Mode” you can access the Calibration window from the Task Menu or from the Input/Output Channels tab.

Calibration Display Screen

When a channel is calibrated, the number of averages used will be 5, or the number that is designated in the “No. of Averages” field (located on the Analyzer Tab). The greater of the two values will be used, automatically.

A discussion of the various regions of the Calibration window now follows. The section concludes with an example.

Calibration Process

Single Channel

Multiple Channel

Used to select one active channel at a time. When the calibrator only has one channel output, the Single Channel method must be used. When Single Channel is selected, the “Active” column shows a radio button next to each channel.

Used to select two or more channels for simultaneous calibration. This is only an option when the calibrator offers more than one output. When Multiple Channel is selected, the “Active” column shows a checkbox next to each channel.

Calibration Domain

With the use of Fourier Transform, any signal can be viewed from a time domain or a frequency domain. Either domain can be selected for use in the calibration process.

Time

Frequency

The overall value is computed using time domain data.

The overall value is computed with frequency domain data by summing up frequency component of FFT spectrum.

Calibrator Frequency (Hz)

This field is used to enter the frequency setting of the calibrator. The analysis frequency, which is twice this frequency, is used if possible. Otherwise, the maximum allowed analysis frequency is used.

3-6 Menus 878193 eZ-Analyst

Columns on the Calibration Window

No. This column displays channel numbers [1, 2, 3, … etc.] for easy reference to

their associated cells. The channel numbers, being for display indication only, are fixed and can not be edited.

Active When “Single Channel” is selected, you can click on a radio button in the

“Active” column to enable one channel for calibration. When the calibration is complete, select the radio button for the next channel to be calibrated.

When “Multiple Channel” is selected, the radio buttons are replaced by checkboxes. Ensure that each channel to be calibrated has the associated box checked, and that the remaining channels remain unchecked. For multiple channel applications note that you can click on the column label, i.e., the word “Active” to simultaneously check or uncheck all channel checkboxes in the column.

Note: The channel settings in the Calibration window are independent of the

selections that appear in the Input Channel Setup window. Only active channel shows up at calibration window.

Calibrator Type

This column is used to select Peak or RMS* as the calibrator type. Highlight a cell, or range of cells, in the grid, then select Peak or RMS from the popup menu.

Peak

RMS

Calibrator Scale

Uses the peak amplitude of the spectrum around the specified frequency of the calibration signal.

Uses a compensated overall level calculation to determine the RMS level of the calibration signal, as specified in the Units field.

*RMS – Root-mean-square, is the square root of the arithmetic mean of the

squares of a set of numbers.

This column is used to select the calibrator scale to linear or to decibel.

Select Lin if the calibrator is in linear scale.

Lin

Select dB if the calibrator scale is dB.

Note: While there are several definitions to dB, in our application we are

using dB to express the ratio of the magnitudes of two quantities equal to 20 times the common logarithm of the ratio.

The formula for dB is:

dB = 20 log (x/dBEUref)

EU dB Reference

dB EU Reference is applied to displayed data when the Y-axis scale is set to dB.

dB = 20 log (x/dBEUref)

The formula for dB display for Autospectrum, Cross Spectrum, and PSD is:

dB =10 log [x/((dBEUref)^2)]

This field is used to enter the Engineering Units dB reference.

This is valid only for frequency domain data. Note: The dB Reference (Volt) can be changed simultaneously for all channels

from the associated entry box in the FFT Setup Tab. The tab is accessed from the Configuration Window [via the Edit pull-down menu].

The formula for dB display for Unaveraged Spectrum, Averaged Spectrum, and FRF is:

eZ-Analyst 878193 Menus 3-7

Calibrator EU

Measured mV

Transducer mV/EU

EU Offset EU Offset is used for DC signal compensation. Offset is added to, or

This field is used to set the Calibrator’s Engineering Units.

Displays the measured value of the channel in milli-volts.

The Transducer mV/EU value can be entered manually, or by the measurement process. Highlight a cell, or cells, in the grid before typing a value in the data entry box. Then press the <OK> button to accept the value. All other fields linked to this value are updated when the value is accepted.

mV/EU= Volts/Units * Transducer Gain

subtracted from the measured EU value.

Transducer Gain

Calibration Date

Start Calibration Measurement

Transducer Gain is used as auxiliary scaling to compensate for the transducer amplifier gain. Gain is a multiplied function.

This column displays the date and time of the last calibration. If any channel value changes, even if the original number is restored, the calibration date and time are automatically removed for that channel.

Clicking this button starts the calibration process for all selected channels. At the completion of the calibration, the measured mV and the Transducer mV/EU value for the applicable channels are automatically updated.

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Calibration Procedure, an Example

Accelerometer type - Piezotronics 303A03 Calibrator - Piezotronics 394B05 - 1.02 G (RMS) at 80Hz Unit of acceleration - in/sec^2

Note: 1.02 G RMS is equivalent to 393.811 in/sec^2 (1G=386.089in/sec^2).

This is a linear scale, thus we will be selecting Lin in the Calibrator Scale column.

In this example we will be calibrating channel 1.

1. Attach the accelerometer to the calibrator (signal source). Connect the other end of the accelerometer cable to the channel 1.

2. Set the FSV into a proper range (i.e. 32.4 mV) in the Input Channels Setup window, then click the <Apply> button.

3. Set the desired blocksize in the Analyzer Tab if a block size of greater than 4096 is desired.

4. Set the “No. of Averages” in the Analyzer Tab if an average count of greater than 5 is desired.

5. Open the Calibration Window from the Task Menu, or from the Input/Output Channels Tab.

6. Select “Single Channel.”

7. Select “Auto Range,” if desired.

8. Select a Calibration domain. In this case, either “Time” or “Frequency” can be selected.

9. Enter 80 Hz in the Calibrator Frequency field.

10. Ensure the radio button for Channel 1 is enabled (in the Active column.)

11. Select RMS for the Calibrator Type.

12. Select Linear in the Calibrator Scale field.

13. Leave EU dB Reference set at 1.000. Note that this step can be skipped when linear scale is used.

14. Set Calibrator EU at 1.02 ; implying an engineering unit of 1G.

15. Enter 393.811 in the Transducer mv/EU field.

16. Leave the EU Offset at 0.0000. We are assuming no offset in this example.

17.

Leave 1.000 as the Transducer Gain. No amplifier or attenuator is being used in our

example.

18. Click <Apply> so your new values will not be lost.

19. Click the <Start Calibration Measurement> button to begin calibration.

eZ-Analyst 878193 Menus 3-9

File Menu

The File Menu provides a means to print plotted data, as well as open, save, and export data files.

Open Time History Data

Used to locate and open saved .dsc files.

Save [or Open] Multiple Data Set (.mds)

These two menu items provide a means of saving [or opening] function files. Time and autospectrum data is saved. If there is any reference channel cross-spectrum is saved for all channel pairs. The file extension is .mds.

Save [or Recall] Hardware Setup (.set)

These menu items provide a means of saving [or recalling] current settings and processing conditions. In addition, .mds files can be used to recall setup conditions, because these filetypes include setup conditions in addition to measured data. Note that only the setup condition is recalled.

Save [or Recall] Plot Setup (.pset)

These two menu items provide a means of saving [or recalling] the current plot condition, such as window locations and window content, including: channel numbers, function type, axis-type, and range. These files can be recalled at a later date to process customized plot conditions.

Without user intervention, the plot setup file is automatically saved with .mds and .dsc files.

You can have plot setups automatically recalled whenever you recall data files. To select this option, open the Preferences window [accessed through the Edit pull-down menu] and check the box labeled “Recall Plot Setup When Recall Data Files.”

The standard print window associated with your specific computer will open. Select a printer and the number of copies needed before clicking <OK>.

Note: In regard to printing, black plot backgrounds changed to white.

Authorization

Opens an Authorization Dialog box that provides a means of entering a license key (authorization code). Use of the key enables the features of purchased software, such as eZ-Analyst. The dialog box includes an option to run a 30-day trial version of eZ-Analyst.

Exit

This menu item closes the eZ-Analyst application.

Control Menu

The Control Menu selections provide the same functionality as the Task Bar buttons previously discussed.

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Export Menu

Export Menu > Time History Data …

This window is used to export recorded files as Text (ASCII) files.

Source Information Panel

This panel, located at the top of the window, contains basic information about the source file (see figure).

Export Window

Destination Information Panel

Note: For 600 Series, WaveBooks, and ZonicBook/618E analyzers the file format is Text (ASCII).

1. In the Filename data entry box, type the directory path and file name for the recorded file, or use the <Browse> button to locate the desired file. The correct file extension will be appended to the file name later, when the <OK> button is clicked.

2. Specify the First (Starting) and Last (Ending) records (blocks) that you want saved. In the first figure above, “1” is specified for the Starting Block and “88” is specified for the Ending Block.

3. Specify the channels of interest. Click to place a checkmark in the channel box for each of the channels you want to export. The selected channels will be adjusted to continuous channels starting with channel 1, but all the properties [including labels] will retain the old definition. For example, selected channels 1,3,5,6,8,16 would be adjusted to channels 1,2,3,4,5,6 in the exported file.

4. If desired, change the gain and/or offset values on a per-channel basis.

5. Click the <OK> button.

eZ-Analyst 878193 Menus 3-11

Export Menu > Function Data Set(s)

This menu item is for exporting function files.

Export Function Data

1. Select the type of file you want.

2. Type the directory path and file name for the function file, or use the <Browse> button to locate the desired file.

3. If you want to have records automatically appended to the specified file, select Automatic Save after Averaging.

4. Specify either All Ch. Pairs, or Displayed Ch. & Functions.

• All Ch. Pairs - exports all the data for all the channels pairs so that all functions

can be retrieved if desired.

• Displayed Ch. & Functions - exports only the data for the displayed functions.

5. Click to place a checkmark by each of the functions to be saved. See the following note.

6. Click <OK>.

Note: Selected functions can not be saved without the display of a warning prompt. This is in

case the selection is not valid. For example: if the functions FRF, Cross, and Coherence were selected, but no reference channels were selected, then the three functions could not be saved. This is because these three functions require a reference channel.

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+ 106 hidden pages

Measurement eZ-Analyst User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Manual Layout

Table of Contents

WaveBooks

ZonicBook/618E

IOtech 600 Series

Task Menu

File Menu

Control Menu

Export Menu