Page 1 USER’S MANUAL eZ-Analyst 5.1.x version Real-Time Vibration and Acoustic Analysis Software IOtech 25971 Cannon Road Cleveland, OH 44146-1833 (440) 439-4091 *372165D-01* Fax: (440) 439-4093 sales@iotech.com productsupport@iotech.com 372165D-01 1086-0922 rev 15.1 www.iotech.com...
Page 2: Ch 1 - Software Installation
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/618E, WaveBooks, and IOtech 640, 650, and 652 dynamic signal analyzers.
Page 3: Table Of Contents
Ch 1 – Software Installation WaveBooks …… 1-1 ZonicBook/618E …… 1-3 IOtech 640, 650, and 652 …… 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 –...
Page 4 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 eZ-Analyst 938091...
Page 5: Wavebooks
IOtech 640, 650, 652, and 655 …… 1-5 WaveBooks System Requirements 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.
Page 6 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 –...
Page 7: Zonicbook/618E
ZonicBook/618E 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 •...
Page 8 Windows Desktop Start Menu. 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. Software Installation, ZonicBook/618E eZ-Analyst 988490...
Page 9: Iotech 640, 650, And 652
IOtech 640, 650, 652, and 655 Dynamic Signal Analyzers for Vibration Analysis & Monitoring 640u, 650u, 652u, or 655u (USB2.0) Verify that you have the following items. • 640u, 650u, 652u, or 655u • USB Cable • Dynamic Signal Analysis CD •...
Page 10: Features
*eZ-Analyst can be used for the dynamic channels of the 655 device, but not for the temperature channels. If you will be using a 655 for temperature applications you will need to use other software, such as eZ-TOMAS or DASYLab.
Page 11 *eZ-Analyst can be used for the dynamic channels of the 655 device, but not for the temperature channels. If you will be using a 655 for temperature applications you will need to use other software, such as eZ-TOMAS or DASYLab.
Page 12 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.
Page 13: Measurement 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.
Page 14: A Word About Configuration
A Word About Configuration Configuring Input Channels 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.
Page 15: Task Menu
(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.
Page 16 Playback / Review Mode Task Menu 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.
Page 17 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.
Page 18 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. Menus eZ-Analyst 987990...
Page 19 Piston phones are most often used for calibrating microphones. Piston phones typically make use of decibel (dB) engineering units. 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.
Page 20 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. Menus eZ-Analyst 989090...
Page 21 Configuration Window [via the Edit pull-down menu]. The formula for dB display for Unaveraged Spectrum, Averaged Spectrum, and FRF is: dB = 20 log (x/dBEUref) The formula for dB display for Autospectrum, Cross Spectrum, and PSD is: dB =10 log [x/((dBEUref)^2)] eZ-Analyst Menus 989090...
Page 22 Start Clicking this button starts the calibration process for all selected channels. Calibration At the completion of the calibration, the measured mV and the Transducer Measurement mV/EU value for the applicable channels are automatically updated. Menus eZ-Analyst 989090...
Page 23 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 Menus 989090...
Page 24: File Menu
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...
Page 25: Export Menu
Floating Point – As an alternative to Integer, you can choose to export data to RPC III double precision Floating Point format. Floating Point provides greater resolution and dynamic range than that provided by the Integer format. Floating Point is a more recent format that may not be supported by all third party software. eZ-Analyst Menus 3-11 987090...
Page 26 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. 3-12 Menus eZ-Analyst 989090...
Page 27: Window Menu
Example of an Added Function View Reference Note: Three buttons become enabled at the right side of the main window toolbar for most single-display function views (FV), i.e., when frequency is used for the x-axis scale instead of time. eZ-Analyst Menus 3-13 989090...
Page 28: Add Strip Chart
The buttons are used in the exact same manner as when they were located on eZ-Analyst’s main window. Removing the checkmark from “Buttons” places the channel buttons back onto the toolbar. Note that the <Input Channel Buttons> button [located on the toolbar, just to the left of where the channel buttons reside] provides the same functionality.
Page 29: Locations
Tachometer channels are set up in the Input Channels Window. See the Tach Channels section of chapter 4 for additional information. > Acquisition Setup Window Menu Selecting “Acquisition Setup” brings up a display of setup information pertaining to the acquisition, e.g., Analysis Frequency, Blocksize, Trigger, Mode, etc. Acquisition Setup eZ-Analyst Menus 3-15 989090...
Page 30: Measurement Status
Window Menu Selecting “User Comments” brings up a size-adjustable dialog box, which consists of a text field. User Comments provides the user a means by which he or she may review previous comments and add new ones. 3-16 Menus eZ-Analyst 989090...
Page 31: Cascade
The Graph Toolbar, discussed in chapter 5, includes a button to allow for quick vertical tiling. Refer to that chapter for button descriptions and locations. Example of using Vertical Tile with two Plots Each plot is longer in the “vertical” direction. eZ-Analyst Menus 3-17 989090...
Page 32: Tile Horizontally
Refresh Windows Window Menu Used to refresh a window; for example, to refresh a Strip Chart. In this case, the refresh function blanks out the present Strip Chart, essentially providing you with a new, clean window. 3-18 Menus eZ-Analyst 989090...
Page 33: Edit Menu
Measurement Mode panel. This panel is of importance to file overwrite protection; and should be understood (see page 4-41). The Edit Menu provides a means of configuring eZ-Analyst in regard to both functionality and appearance. The menu contains the following selections: Configuration Window ……...
Page 34 Note: A “Delta X” Freq. of 2.5 Hz indicates a higher frequency resolution than a “Delta X” Freq. of 100 Hz. Higher frequency resolutions indicate that the signal trace will be based on more data points for a given time frame. The higher the frequency resolution, the smoother the trace will be. Edit Menu eZ-Analyst 889691...
Page 35: Analyzer Tab
Nyquist Factor: A user-selected factor, for which waveform frequency is multiplied by, to ensure that a sampled analog signal is accurately reconstructed. eZ-Analyst has up to three selectable Nyquist Factors: 2.56, 5.12, and 10.24, depending on the hardware being used.
Page 36 The AC coupling option of selecting 0.1 Hz or 1 Hz is available only on ZonicBook/618E and WBK18 modules [that are being used in conjunction with a ZonicBook/618E]. When a WBK18 is used with a WaveBook/516E, choosing AC Coupling [in the Edit Configuration menu] automatically enables filtering at 0.1 Hz. Edit Menu eZ-Analyst 889691...
Page 37 In the previous figure we see that “Pre-Trigger” is selected for 10.00 (%). Note: For IOtech 640, 650, 652, and 655 devices, a maximum pre-trigger percentage exists for each combination of analysis frequency, number of spectral lines, and number of analog input channels.
Page 38 500Hz 1kHz 2kHz 5kHz 10kHz 20kHz 40kHz 25600 12800 6400 3200 Spectral 1600 Lines Frequency For 2 Channels 20Hz 50Hz 100Hz 200Hz 500Hz 1kHz 2kHz 5kHz 10kHz 20kHz 40kHz 25600 12800 6400 3200 1600 Spectral Lines Edit Menu eZ-Analyst 889691...
Page 39 500Hz 1kHz 2kHz 5kHz 10kHz 20kHz 40kHz 25600 12800 6400 3200 Spectral 1600 Lines Frequency For 5 Channels 20Hz 50Hz 100Hz 200Hz 500Hz 1kHz 2kHz 5kHz 10kHz 20kHz 40kHz 25600 12800 6400 3200 1600 Spectral Lines eZ-Analyst Edit Menu 889691...
Page 40 500Hz 1kHz 2kHz 5kHz 10kHz 20kHz 40kHz 25600 12800 6400 3200 1600 Spectral Lines Frequency For 8 Channels 20Hz 50Hz 100Hz 200Hz 500Hz 1kHz 2kHz 5kHz 10kHz 20kHz 40kHz 25600 12800 6400 3200 Spectral 1600 Lines Edit Menu eZ-Analyst 889691...
Page 41 500Hz 1kHz 2kHz 5kHz 10kHz 20kHz 40kHz 25600 12800 6400 3200 Spectral 1600 Lines Frequency For 10 Channels 20Hz 50Hz 100Hz 200Hz 500Hz 1kHz 2kHz 5kHz 10kHz 20kHz 40kHz 25600 12800 6400 3200 1600 Spectral Lines eZ-Analyst Edit Menu 889691...
Page 42 (3) open the Configuration window Capturing Transient Data Setting eZ-Analyst to trigger on an Input Channel captures transient data when the associated parameters are correctly specified. The following sections discuss the associate parameter and how they apply to a signal such as an impact hammer striking an object. The signal show is from an accelerometer located in the hammer’s head.
Page 43 Post-Trigger (D) Post-Trigger Post-Trigger is the opposite of Pre-Trigger. Post-Trigger causes eZ-Analyst to wait “n%” samples before it begins filling a block of data. This has the effect of shifting the signal to the left. Shifting a Waveform with Pre-Trigger and Post-Trigger Note: The trigger level is an absolute signal level that must be within the FSV.
Page 44 The first time you attempt to start data acquisition after you select Linear (-) averaging, the Negative Averaging Setup/ Measurement window opens. An example of how to perform negative averaging follows these definitions. 4-12 Edit Menu eZ-Analyst 889691...
Page 45 Negative Average spectra. If you compare the Negative Average spectra to the non- running impact you will notice that the Running Speed vibration has been subtracted out, leaving Resonances. eZ-Analyst Edit Menu 4-13 889691...
Page 46 Impact Measurement on a Non-running Motor Impact Measurement, 10 Averages on a Motor Running at 3600 RPM 4-14 Edit Menu eZ-Analyst 889691...
Page 47: Input Channels Tab
When using WaveBook hardware, eZ-Analyst supports up to 64 channels of input. If your WaveBook’s hardware configuration has more than 64 channels, eZ-Analyst will display an error message and enter the Playback mode. If you wish to use Measurement mode you will have to reduce the channel count by removing expansion modules.
Page 48: Analog Input Channels
Response channels. If you are using a force channel, then (1) highlight that channel’s Response/Reference cell, and (2) select Reference on the resulting popup menu. Full-Scale Voltage. The cells in this column are used to set the full-scale voltage value in Volts. 4-16 Edit Menu eZ-Analyst 889691...
Page 49 Detection of a fault does not, however, alter the acquisition process or its data. When the IEPE function is not available to a channel a dash appears in the IEPE column for the associated channel. eZ-Analyst Edit Menu 4-17 889691...
Page 50 Note: the Preferences Tab contains a checkbox with the associated text: “Check for TEDS sensors on Dynamic Input Channels.” If checked, every time eZ-Analyst is started, every channel [on each connected WBK18 or ZonicBook main channel] is scanned for the presence of a TEDS compliant accelerometer.
Page 51 EU Ref: is applied to displayed data when the Y-axis scale is set to dB. This is valid only for frequency domain data. Note: Data exported from eZ-Analyst is always scaled to Engineering Units. This is regardless as to whether EU or V is selected.
Page 52 Miles per Hour, Revolutions Per Second, or HZ. The desired conversion factor is entered as a multiplier. To divide, enter an appropriate decimal. For example, divide by 2 you would enter a value of 0.5. 4-20 Edit Menu eZ-Analyst 889691...
Page 53 RPM and Max Orders represent the practical limits of the Order Track display that are constrained by the settings of Analysis frequency, Spectral lines, and the Orders Nyquist Factor. These two values interact. Changing one will cause the other to change. eZ-Analyst Edit Menu 4-21 889691...
Page 54 Increasing the debounce value too high will reject the tachometer pulse altogether, particularly at high RPM. Do not set the debounce value to higher than one-half of the minimum tach pulse period. The minimum tach pulse period is that which exists during the highest RPM. 4-22 Edit Menu eZ-Analyst 889691...
Page 55 The following diagrams show typical tach pulses and appropriate comparator threshold trigger settings. Typical Tach Pulses and Appropriate Threshold Settings eZ-Analyst Edit Menu 4-23 889691...
Page 56 Analog Signal Input channels (CH1 through CH8) instead of a TACH channel, then the tachometer signal will only Use Voltage Mode when you need to be accepted in the Voltage Mode. determine a trigger voltage. 4-24 Edit Menu eZ-Analyst 889691...
Page 57: Fft Setup Tab
Its side lobes are considerably higher. Its effective noise bandwidth is still almost twice that of the Hanning window, therefore this window is used mainly to measure accurate peak amplitudes of discrete spectral components that are known to be separated by several spectral lines. eZ-Analyst Edit Menu 4-25 889691...
Page 58 The percent of the Frame Period at which the Rectangular and Cosine Taper Windowing functions stop. Edge (%): This is the percent of the Frame Period during which the Cosine Taper Windowing function tapers up and down. 4-26 Edit Menu eZ-Analyst 889691...
Page 59 Analysis Frequency via radio button on the Analyzer Tab, “CPM” appears as the HPF units. FFT Integration Panel HPF Int1 (Hz): Enter a value for the cutoff amount for the first integration. HPF Int2 (Hz): Enter a value for the cutoff amount for the second integration. eZ-Analyst Edit Menu 4-27 889691...
Page 60 Analog Channels (CH1 through CH8) can be set to have an input type of “Tach” from the Input Channels Tab, as indicated in the right-hand figure above. Tach Setup for Analog Channels is performed within the FFT Tab 4-28 Edit Menu eZ-Analyst 889691...
Page 61 Orders represent the practical limits of the Order Track display that are constrained by the settings of Analyses frequency, Spectral lines, and the Nyquist Factor. These two values interact. Changing one will cause the other to change. eZ-Analyst Edit Menu 4-29...
Page 62 FFT Setup Tab: Bank Control (Modal Locations) Panel This panel relates to the Modal Locations window, which is accessed from eZ-Analyst Window’s pull-down menu. The Bank Control (Modal Locations) Control Panel contains one check box, two radio buttons, and a location increment field. Descriptions of each follow.
Page 63 The panel [following figure] is designed such that a specified voltage can be assigned to a specified dB value. dB Voltage Reference Panel Reference Note: The dB EU Reference Volt column is located in the Input Channels Tab. eZ-Analyst Edit Menu 4-31 889691...
Page 64: Recording Setup Tab
Spectrum < at specified frequency Delay (sec) – this function is used to include [with the recording] data that follows the stop trigger event by the set number of seconds, as specified by the delay. eZ-Analyst Edit Menu 4-33 889691...
Page 65 When using Scheduled Recording, you need to set up the recording options for automatic file creation. This is done in the Recording Setup Tab’s “File Name Options” panel, discussed below. Edit Menu > Configuration > Recording Setup Tab: File Name Options File Name Options Panel 4-34 Edit Menu eZ-Analyst 889691...
Page 66 For example, you may want to include the environmental conditions that existed at the time of the recording, the phase of the project, or a problem that is being investigated. Note that the comments are saved as part of the data file. eZ-Analyst Edit Menu 4-35...
Page 67: Block Rejection Tab
At the end of each average, if you want to reject that measurement, click on the <Reject?> button. eZ-Analyst will then reject the current frame of data. The data and average counter will go back to the previous measurement.
Page 68 Double Hammer range at 12% and 14%, or 11% and 13% of the block. Typically this range is fine tuned using sample acquisitions prior to starting a real test. eZ-Analyst Edit Menu 4-37...
Page 69: Octave Setup Tab
Dual band uses 32 block sizes. This makes it possible for eZ- Analyst to simultaneously process 32 “time segments” in the lower frequency range, as indicated in the following figure. 1 Block Processed for High Band 32 Blocks Processed for Low Band 4-38 Edit Menu eZ-Analyst 889691...
Page 70 When eZ-Analyst was set with a limit of 6400 spectral lines, dual band processing offered the following benefits: • A wider range of octave band data with no increase in block size. • A much wider range of data, in comparison to the data from the Single Band mode.
Page 71: Preferences Tab
The Preferences tab includes two panels: (a) T.E.D.S and (b) Measurement Mode. T.E.D.S. Panel If the TEDS checkbox is checked: every time eZ-Analyst is started, every channel [on each connected WBK18 or ZonicBook main channel] will be scanned for the presence of a TEDS compliant accelerometer.
Page 72 Edit > Configuration > Preferences Tab – Measurement Mode Panel Measurement Mode Panel In eZ-Analyst the same Hardware and Configuration Setups [that are used to Record data to disk in Measurement Mode] are also later used to read and analyze recorded data in Playback Mode.
Page 73 If you entered or selected a pre-existing filename and the Hardware and Configuration Setup file already exists [and there is previously recorded data file present with the same name] you will be warned. See following figure. 4-42 Edit Menu eZ-Analyst 889691...
Page 74 The following topics are related to this material on the Measurement Mode panel o Task Menu > Measurement Mode > Change Task Mode o Control Menu o File Menu > Exit o File Save / Hardware Setup, Save or Recall eZ-Analyst Edit Menu 4-43 889691...
Page 75: Output Channel Setup
In regard to ZonicBook/618E – Source Output is supported for device and for attached WBK18 modules. In regard to WaveBooks – Source Output is only supported when eZ-Analyst detects attached WBK14 or WBK18 expansion units. For both the ZonicBook/618E and WaveBooks, the Output Channel (Excitation Source) can be for either a continuously running sine wave or a swept sine wave.
Page 76 To configure, make selections for the available parameters, and then click the <OK> button. Once a sweep is completed, the waveform returns to its start frequency and is swept again and again until stopped by the user or until the software application is terminated. eZ-Analyst Edit Menu 4-45...
Page 77: 640U And 640E Waveform Output
640u and 640e Waveform Output eZ-Analyst provides extensive Waveform Output functionality when used with an IOtech 640e or 640u Dynamic Signal Analyzer. When connected to a Dynamic Signal Analyzer 640 Series device [DSA640] the Waveform Output menu selection changes to appear as shown in the figure at the right. Also available is a toolbar button show in the following figure.
Page 78 Frame Time. When waveform output is locked, the Burst On / Sweep Time control is disabled, and the value displayed is the Frame Time. Locking a Waveform Duration eZ-Analyst Edit Menu 4-47 889691...
Page 79 To zoom into the waveform simply click and drag the mouse over the desired viewing area . Zooming in on a Wave Segment You can continue to zoom into the waveform to view smaller and smaller sections of the currently displayed waveform segment. 4-48 Edit Menu eZ-Analyst 889691...
Page 80 (1) Start to End frequency, (2) End to Start frequency, (3) Start to End to Start frequency, or (4) End to Start to End frequency. The Chirp wave type is a Sine wave that cannot have envelope ramps applied to it. eZ-Analyst Edit Menu 4-49 889691...
Page 81 Selecting a File to Import Raw Data (.DSC) Files If you selected an eZ-Analyst raw data file (files in the Import dialog box with a .DSC file extension), the Configuration dialog Arbitrary Tab will appear as shown in the next figure.
Page 82 When the opened file has a .TXT file extension, you will be presented with another dialog box. This is where you tell eZ-Analyst how to interpret the data in the ASCII file. The next figure shows the first step needed for importing an ASCII file.
Page 83 Importing ASCII data can take several seconds. While the data is being imported a progress bar is displayed as indicated in the above figure. When all of the data has been imported, the dialog display changes. See following figure. 4-52 Edit Menu eZ-Analyst 889691...
Page 84 For example, eZ-Analyst needs to know what the +/- Full Scale Range was when the data was acquired. The software also needs to know the sample rate that was used to acquire the data.
Page 85 “played-out” through the 640 unit’s Analog Output. As data is played- out, eZ-Analyst is periodically interrupted to fill the buffer with more data to keep the waveform flowing. The smaller the buffer the less time it takes to play-out, therefore more interruptions are made to keep generating waveforms.
Page 86 When the Signal Generator Button is pressed eZ-Analyst starts generating Waveforms at the DSA640 Analog Output connector. The Signal Generator Button changes from a flat line, to a Sine wave Icon to indicate that the output is running.
Page 87: Playback Setup Window
1% of the next available history data. This means that a setting of 99 allows us to step through the history data in 1% increments. Playback Speed – Select from one of three playback speed options: No Delay, Acquisition Rate, or Delay (mSec) 4-56 Edit Menu eZ-Analyst 889691...
Page 88 16 additional buttons are used to set colors for traces or channels. If you want a channel to remain a certain color ensure the channel radio button selected. Click on a channel’s color chip to open a color palette. Click on the desired color, then click <OK>. eZ-Analyst Edit Menu 4-57...
Page 89 “Minimum is typically set above the extraneous noise level. Peak Width Sets the eZ-Analyst to search data, according to a cursor-selected range (Spectral Lines) (band). The band takes into account the Minimum threshold value for peak searching, if defined.
Page 90 PSD is a single-channel display function. It is the Fourier Transform of the Auto-correlation function. This normalization should be used with continuous random signals. Spectrum A dual-channel display function. Displays averaged linear spectrum computed as the square root of the averaged autospectrum. eZ-Analyst Toolbar Buttons 929791...
Page 91 Y-axis with consecutive points joined by line segments. From basic vibration theory, a Nyquist plot of a mobility function should trace out a circle (counter-clockwise) as the frequency is increased through an isolated structural resonance. Toolbar Buttons eZ-Analyst 916994...
Page 92 Full Octave (#16) and 1/3 Octave (#17). Buttons 9, 10, 11 will only be active if there is a “Reference Channel.” A channel can be selected to “Reference” in the Input/Output Channels Tab via the Response/Reference column. eZ-Analyst Toolbar Buttons 916994...
Page 93 Tab of the Configuration window to time data. Full Octave Extends from a lower frequency, f 0 2 to twice the lower frequency (2f 0 ). The <Full Octave> button is only actie when the <Octave> button (#11) is selected. Toolbar Buttons eZ-Analyst 916994...
Page 94 Note that the annotation color will match the “Foreground” color as set in Edit/Display Preferences. Note that the Annotation frame will only display up to 6 sets of cursor values. eZ-Analyst Toolbar Buttons 916994...
Page 95 RMS: (Root Mean Square): The square root of the average of the square of Pk-Pk the value of the function taken throughout one period. Peak: Zero to Peak. Pk-Pk: Peak to Peak. Refer to the following illustrations. RMS Level Peak Peak-to-Peak Toolbar Buttons eZ-Analyst 916994...
Page 96 To use Order Tracking a tachometer must be assigned to an enabled channel. Note that if the <Order Tracking> and <Slice View> buttons are both enabled, eZ-Analyst displays the slice view above the order tracking view. The Order Tracking display can be enabled from either the Measurement (Real Time) mode or the Playback mode.
Page 97 32 - Slice View 31 32 33 33 – Split View Display Selected: Waterfall 34 – Order Tracking, or Frequency Frequency View 3D-Waterfall Display *You must have at least one cursor selected for slice display. eZ-Analyst Toolbar - Selecting Displays 918294...
Page 98 33 – Split View Grayed-Out Display Selected: Order Tracking 34 – Order Tracking, or Order Frequency View Tracking Order Tracking and Order Slice View Display *You must have at least one cursor selected for slice display. 5-10 Toolbar - Selecting Displays eZ-Analyst 918294...
Page 99: Introduction
To REMOVE a channel, click on the With your mouse, click and drag a channel desired “channel box” in this area box from the right of the plot into the plot and drag it into the plot region. area. eZ-Analyst Interactive Plot Display 988191...
Page 100: Display Preferences Window
Using Cursors In eZ-Analyst cursors can appear as vertical lines that indicate an X Y axis intersect via an asterisk (*), or can appear as an asterisk alone. Line and Point settings are made from the Display Preferences window (following figure) which is accessed from the Edit Pull-down menu.
Page 101 After entering the new value, if you decide that you want to keep the value as it was, press the PC keyboard’s <Esc> key to close the cursor frame without accepting the new value. eZ-Analyst Interactive Plot Display 988191...
Page 102 SideBand – Used for one channel trace. Results in several cursors spaced at even intervals on both sides of the primary cursor. With the use of Annotation button values will be shown for all cursors. Interactive Plot Display eZ-Analyst 988191...
Page 103 Display Preferences). The user can move the freeform cursors to any desired points on trace. Note that the Annotation frame will only provide X and Y values for up to 6 cursors. eZ-Analyst Interactive Plot Display 988191...
Page 104: Additional Functionality
MSPaint or Word. Plot Window Data Copied and Pasted into Word When you want to export data from windowed time plots, you should use the export function in lieu of the copy function. Interactive Plot Display eZ-Analyst 988191...
Page 105: Strip Charts
When in multi-channel mode, only traces of the maximum values for each channel will be displayed. An example of a strip chart with two channels follows. Strip Chart, Multi-Channel Mode eZ-Analyst Interactive Plot Display 988191...
Page 106 Overlays of XLS Files eZ-Analyst allows you to overlay up to 15 Excel (XLS) files within a function view, providing that the following conditions are met. Only one channel is displayed. The data type is in agreement with that in the view; e.g., if the original channel is octave then the channels for the overlay must include octave.
Page 107 The <Reset List> button clears the list of XLS files and allows you to create a new list. 5. After you have completed your selection and have positioned the XLS filed in the desired order, click the <Ok> button. eZ-Analyst Interactive Plot Display 988191...
Page 108: Displaying Channel Pairs
To change the X-Axis: Hold down the <Ctrl> key, at the same time, left-click and drag the mouse cursor horizontally on the plot. Two vertical cursor lines will define the new x-axis end points. 6-10 Interactive Plot Display eZ-Analyst 988191...
Page 109 To simultaneously change the X & Y Axes: Hold down the <Ctrl> and <Alt> keys, at the same time, left-click and drag the mouse cursor diagonally on the plot. A rectangle will define the new area of the plot. eZ-Analyst Interactive Plot Display...
Page 110 AutoScale ensures that all the captured data is visible on the plot. Grid The Grid menu allows you to place and remove grid lines from the graph of plotted data. You can also turn the grid on and off by pressing the “G” hot key. 6-12 Interactive Plot Display eZ-Analyst 988191...
Page 111 TIP: To enhance 3D waterfall performance you can do one or more of the following: increase PC processor speed increase PC memory display fewer waterfalls use fewer spectral lines lower the number of records use fewer frequency slices eZ-Analyst Waterfalls, Order Tracking, & Slice Views 878193...
Page 112: 3D Waterfalls
The Spectrum Waterfall Configuration dialog lets you control how individual Waterfall and Frequency Slice data views will appear and behave. Each Function View window can have its own Waterfall and Slice data views. Waterfall Configuration Menu 3D Waterfall Display Waterfalls, Order Tracking, and Slice Views eZ-Analyst 878193...
Page 113 The Display Records parameter controls the number of records that are cascaded together in the waterfall. A large number of records produce more resolution in the waterfall, but is offset by a reduction of performance in updating the plot. You can adjust the eZ-Analyst waterfall record setting between 10 and 256 records per plot.
Page 114 Frequency Slices use cursor colors will change the colors of the Frequency Slice plots in the Waterfall. When left unchecked, the slice plots use the channel colors as defined in the eZ-Analyst preferences dialog. When checked, the slice plots will assume the colors of the cursors as they appear in the Spectrum plot window.
Page 115 <OK> to close the dialog to save your settings. Note: The rotation presets are global to all waterfall configurations. This is unlike the other settings in the dialog that are unique to a single waterfall plot. eZ-Analyst Waterfalls, Order Tracking, & Slice Views 878193...
Page 116 Hold down the <Shift> key and drag the mouse. This moves the plot to a new position. To rotate the waterfall plot: Drag the mouse to achieve the desired angle of view. Waterfalls, Order Tracking, and Slice Views eZ-Analyst 878193...
Page 117: Order Tracking
Window with two views If the <Order Tracking> and <Slice View> buttons are both enabled eZ-Analyst displays the slice view above the order tracking view, as indicated in the figure. Order Tracking display can be enabled from either the Measurement (Real Time) mode or the Playback mode.
Page 118 Note that if the <Order Tracking> and <Slice View> buttons are both enabled, eZ-Analyst displays the slice view above the order tracking view. The Order Tracking display can be enabled from either the Measurement (Real Time) mode or the Playback mode.
Page 119 32 - Slice View 31 32 33 33 – Split View Display Selected: Waterfall 34 – Order Tracking, or Frequency Frequency View 3D-Waterfall Display *You must have at least one cursor selected for slice display. eZ-Analyst Waterfalls, Order Tracking, & Slice Views 878193...
Page 120 Display Selected: Order Tracking 34 – Order Tracking, or Order Frequency View Tracking Order Tracking and Order Slice View Display *You must have at least one cursor selected for slice display. 7-10 Waterfalls, Order Tracking, and Slice Views eZ-Analyst 878193...
Page 121: Using Spectrum Cursors
Spectrum plot. Under the Main cursor node are the Secondary cursor nodes. In the above example, the Main cursor is located on Spectral Line 100, and the harmonic cursors are on the multiples of 100. Annotation in a Frame eZ-Analyst Waterfalls, Order Tracking, & Slice Views 7-11 878193...
Page 122 To re-size the frame, place the mouse pointer over the lower right corner of the frame. The cursor changes shape and allows you to drag the frame dimensions to the desired new size. 7-12 Waterfalls, Order Tracking, and Slice Views eZ-Analyst 878193...
Page 123: Appendix A - Keyboard Controls For Ez-Analyst
- Keyboard Controls for eZ-Analyst Appendix A This appendix consists of several hot key tables for the benefit of those who prefer to use keys in place of mouse/cursor interaction with a GUI. However, for certain functions, such as changing axis scales, a mouse will be needed.
Page 124 Display Menu Control Keys Function Comments Opens the Plot Display Character- Option: “Right-clicking” the mouse, while the cursor istics Menu is over the plot will also open this menu. Used to open the Complex Type Press D + C; release, then press <Enter>. The Display Menu.
Page 125 Plot Display Controls (Note) Keys Function Comments Turns Auto-scale On. ----- (a) While holding down the <Alt> key, place the Expands or contracts the Y-Axis. cursor at the desired start point of the Y-axis, (b) click the left mouse button, (c) drag the mouse vertically until the cursor is at the new end point of the scale.
Page 126 Slice View Control Note that the use of keys in this table assumes that the Slice View has focus. Keys Function Comments <Home> Resets the Playback record ----- pointer to the first record. Autoscale / Manual Scale Toggles between Autoscale and Manual scale. Manual scale values are the ones you enter into the Value Input boxes near the ends of the X &...
Page 127 Compliance, also referred to as Receptance Displacement/Force. The transfer type function is calculated by dividing the cross spectrum of the channel pair by the auto spectrum of the reference (force) channel. Cycles per Minute. 60 CPM is equal to 1 Hz. eZ-Analyst Glossary 959294...
Page 128 Fast Fourier Transform (FFT) Reference Window is applied to the output of a transducer to avoid collecting extraneous signals caused by an excitation device, such as an impulse hammer. Possible selections are: Response, Rectangular, and Cosine Taper. G-2, Glossary eZ-Analyst 959294...
Page 129 “-1.” Inertance Acceleration/Force. The transfer type function is calculated by dividing the cross spectrum of the channel pair by the auto spectrum of the reference (force) channel. eZ-Analyst Glossary 959294...
Page 130 Auto-correlation function. This normalization should be used with continuous random signals. Receptance, also referred to as Compliance Displacement/Force. The transfer type function is calculated by dividing the cross spectrum of the channel pair by the auto spectrum of the reference (force) channel. G-4, Glossary eZ-Analyst 959294...
Page 131 Windowed Time Time data determined by the FFT Response under the FFT Setup tab (of the Edit menu’s Configuration Settings window). See Fast Fourier Transform (FFT) Response Window. The FFT (Response) window is a time-domain, weighting window. eZ-Analyst Glossary 959294...

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