ACES SYSTEMS Viper II User Manual

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User Manual

ACES Viper II and Cobra II Analyzers

ACES Systems/TEC Aviation Division

Document Number 4041-OM-01

Revision 6.00

April 2020

Part Number 10-300-4041

10737 Lexington Drive – Knoxville, TN 37932-3294 USA – Telephone 865-671-2003– Fax 865-675-1241 – Web

www.AcesSystems.com

Table of Contents

Summary of Contents for ACES SYSTEMS Viper II

Page 1 User Manual ACES Viper II and Cobra II Analyzers ACES Systems/TEC Aviation Division Document Number 4041-OM-01 Revision 6.00 April 2020 Part Number 10-300-4041 10737 Lexington Drive – Knoxville, TN 37932-3294 USA – Telephone 865-671-2003– Fax 865-675-1241 – Web www.AcesSystems.com...
Page 2 Copyright Notice Copyright  by TEC, 2018. All rights reserved. No part of this document may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form by any means without the express written permission of TEC. Disclaimer This documentation is provided for information purposes.
Page 3: Table Of Contents
Table of Contents (Rev 6.00, Apr 2020) Preface (Rev 2.01, Apr 2020) Contact ACES Systems Warranty Calibration and Certification Introduction (Rev 2.10, Apr 2020) Table 1.1 ACES Gen II Analyzer Function Comparison Chart Notes, Cautions, and Warnings Conventions Analyzer Description (Rev 2.10, Apr 2020)
Page 4 4.1.4 Connect Sensors 4-21 4.1.5 Start Aircraft 4-23 4.1.6 Acquiring Data 4-23 4.1.7 Review Job 4-25 4.1.8 Balance Solution 4-27 4.1.9 Vibration Summary 4-33 Resume Job 4-35 Manage Jobs 4-35 Manage Setups 4-36 Weight Calculator 4-36 Reserved (Rev 1.00, Dec 2014) Reserved (Rev 1.00, Dec 2014) Main Rotor Track &...
Page 5 8-25 Analyzer Chart Forms 8-26 8.8.1 Regular Chart Forms 8-26 8.8.2 Irregular Chart Forms 8-28 Transient Balance (Viper II only) (Rev 2.10, Apr 2020) Create Setup 9.1.1 Transient Balance Setup 9.1.2 Sensor Information Screen 9.1.3 Transient Balance Speeds Screen 9.1.4...
Page 6 Start Aircraft 10-28 10.2 Resume Job 10-29 10.3 Manage Jobs 10-29 10.4 Manage Setups 10-30 Fan Blade Mapper (Viper II only) (Rev 3.00, Apr 2020) 11.1 Fan Blade Mapper 11-1 11.1.1 Start Job 11-1 11.1.2 Select Setup List 11-2 11.1.3...
Page 7 15-14 15.1.9 Storing Data 15-19 15.2 Resume Job 15-21 15.3 Manage Jobs 15-22 15.4 Exporting Time Trace Reports (Viper II only) 15-22 15.5 Manage Setups 15-24 Monitor Spectrum (Rev 2.10, Apr 2020) 16.1 Monitor Spectrum 16-1 16.1.1 Spectra Setup 16-1 16.1.2...
Page 8 Monitor Overall (Rev 2.10, Apr 2020) 19.1 Monitor Overall 19-1 19.1.1 Overall Vibration Setup 19-1 19.1.2 Speeds (Viper II only) 19-4 19.1.3 Monitor Overall 19-5 19.1.4 Collecting Data with Spectra 19-7 Check Track (Rev 3.00, Apr 2020) 20.1 Check Track 20-1 Test Tach Power (Rev 2.01, Apr 2020)
Page 9 Updated Rev level for Chapters 4, 7, 8, 11, 12, 13, 15, 17, 19, 20, 22, 23, and 24. 2/17/2016 2.00: Major rewrite generalizing the manual to cover both the Viper II and Cobra II. This East chapter was updated with screenshots and corrections to minor typographical errors.
Page 10: Preface (Rev 2.01, Apr 2020)
RMA by completing the form found at https://www.acessystems.com/product-repair-service/. Feedback ACES Systems depends on information from our customers to continue the attributes of quality, dependability and simplicity associated with our products. We invite you to contact our Technical Support office by completing the online form found at: https://www.acessystems.com/contact-us/contact-support/...
Page 11: Warranty
Gen II Warranty The ACES Systems’ Analyzer is warranted to be free of defects in material and workmanship for a period of 60 months (5 years) following the purchase date. Warranty does not cover the analyzer unless it is properly used, stored, and maintained in accordance with the provisions of this manual.
Page 12: Calibration And Certification
5-year warranty. See “Warranty” in this section for details. Revision History 2/15/2016 2.00: Major rewrite generalizing the manual to cover both the Viper II and Cobra II. East 4/1/2020 2.01: Updated minor grammatical errors. Added note to Warranty section. Removed “login required” under Shively RMA request section.
Page 13: Introduction (Rev 2.10, Apr 2020)
(Revision 2.1, April 2020) The ACES Systems’ Second Generation (Gen II) Analyzers are available in two versions – Cobra II and Viper II. The chart below shows the functions available in each analyzer. All analyzer features are discussed in this manual.
Page 14: Notes, Cautions, And Warnings
The Viper II analyzer is capable of true, four-channel, simultaneous data acquisition while the Cobra II is capable of only two-channel, simultaneous data acquisition. Both analyzers provide full graphic-spectrum capabilities including on-screen display of limits and component identification using normal and harmonic cursors.
Page 15: Conventions
User Manual Gen II 1.2. – Conventions The following are writing conventions used throughout the manual to describe certain concepts:  This manual indicates keys/keystrokes in square brackets. For example: [OK], [HOME], [5], or [F1].  The term “select,” as used in this manual, means to highlight the item on the current menu by using the arrow keys, then pressing the [OK] key.
Page 16 “Facing the propeller Looking At it” when working on a pusher-type propeller installation. Revision History 2/15/2016 2.00: Major rewrite generalizing the manual to cover both the Viper II and Cobra II. This chapter was updated East with comparison chart for the two analyzers. 01/09/2020 2.1: Added Direct Connect Verbiage to Function Comparison Chart.
Page 17: Analyzer Description (Rev 2.10, Apr 2020)
Chapter 2 Analyzer Description (Revision 2.1, April 2020) This chapter gives you a brief tour of the analyzer. It describes the various keys and their functions, the input and output ports, and the standard accessories supplied with the analyzer. Optional accessories are discussed later in the chapter.
Page 18: Keypad
User Manual Gen II 2.1. – Keypad The analyzer keypad consists of 30 function keys. (See Chapter 3, “Using the Gen II Analyzer” for keypad operation.) Located at the top right of the analyzer keypad, the [ON/OFF] key, when pressed once and released, turns the analyzer power on or off.
Page 19 User Manual Gen II The brightness key is located below the [F4] key. This key is fully functional for all phases of operation when the analyzer is powered. There are eight levels of brightness. Each key press will produce an incremental increase in the screen’s brightness. Once the highest level of brightness has been reached, the next key press will return the screen to the first brightness level.
Page 20 User Manual Gen II The ten alphanumeric keys (0 through 9 / A through Z) are used to input alphanumeric values into the analyzer. A single press followed by a two-second delay returns the first alpha character displayed on the key. Two or three rapid presses followed by a two second delay returns the second or third alpha character respectively.
Page 21: Screen
– Input and Output Ports 2.3.1. – Top Panel The Viper II has nine input/output ports on the top panel of the analyzer, as shown in the figure below: four “CHANNEL” (vibration channel) inputs, four “TACH” (tachometer) inputs, and one “AUX/COMM” (auxiliary/communication) input/output port.
Page 22 Table 2.1: ACES Gen II Analyzer Tach Inputs ACES Gen II Analyzer Tach Inputs Analyzer Versions Tach Input Cobra II Viper II Optical (Phototach or LaseTach)   Mag Pickup (Mag P/U) ...
Page 23: Side Panel
STRB / JEDA / ACCY 18-28V DC IN 2.3.2.1. - STRB / JEDA / ACCY Port (Viper II) or STRB / ACCY Port (Cobra II – not pictured) This port is used for connection of a current and future accessories designed to work with the Gen II analyzers.
Page 24: Front Face
User Manual Gen II The Viper II analyzer allows for the connection of the ACES Model 1752B JEDA or Direct EMS and is used in conjunction with the Honeywell Performance option (Chapter 12) to communicate with Honeywell’s TFE731 series of engines.
Page 25: Carrying Case
User Manual Gen II WARNING The Gen II analyzers were not intended to be operated during the charging cycle. Individual power requirements must be examined on a case-by-case basis. Operation of the Gen II analyzers with the charger energized and connected may affect acquired readings. 2.4.3.
Page 26: Optional Equipment
Even with the USB keyboard connected, the keypad on the front panel remains active. 2/16/2016 2.00: Major rewrite generalizing the manual to cover both the Viper II and Cobra II. This chapter was updated East with illustrations and corrections to minor typographical errors.
Page 27: Using The Gen Ii Analyzer (Rev 2.10, Apr 2020)
Chapter 3 Using the Gen II Analyzer (Revision 2.10, April 2020) 3.1. – Entering Data Data is entered into the analyzer in one of three ways: (1) by typing data using the keypad; (2) by selecting from specific lists; or (3) by transferring data from a USB flash drive. The methods of inputting data are described in the following sections.
Page 28: Filling In Fields
– Downloading E-Setups from the ACES Systems web site (Log-in required) Electronic versions of the setups (E-Setups) are stored on the ACES Systems web site and can be downloaded directly to the USB flash drive by following the instructions below: The following instructions describe the procedure using Internet Explorer.
Page 29 User Manual Gen II  Once you are logged into the ACES website, hover the mouse over, but do NOT click, “Support”. In the dropdown menu, click on the “Technical Library” link as shown below.  In the “Technical Library” page, you may use the “Filter Results” drop down lists. Simply click on the Bold Type headers and click in the checkbox(es) to narrow your search down until you see what you need in the results widow to the right.
Page 30 User Manual Gen II  Click the “Download” link to the right of the setup you wish to download.  In the pop-up menu, you can select the “Save” button and the E-Setup will be saved in your “Downloads” folder by default. Alternatively, you can click the down arrow on the right side of the “Save”...
Page 31 User Manual Gen II 3.1.3.2. – Exporting setups from the analyzer  Setups can be exported from the analyzer, see paragraph 3.4.4.5 below. After exporting the setup, it will be saved in the “aces_export” folder. Remove the USB flash drive from the analyzer and insert it into a USB port on the computer.
Page 32 User Manual Gen II  From the Analyzer Management menu, select “Database Management.”  Select “Import Setups from USB Drive” and press [OK].  If an existing setup with the same name as the setup you are importing exists, you will be asked if it is ok to overwrite this file.
Page 33: Main Menu
Your analyzer may not show all items displayed in the screen below. If you do not have a license for certain functions, contact your ACES Systems sales representative for information about optional Gen II functions and obtaining a license for them.
Page 34: Status Pane
User Manual Gen II Viper II Cobra II The [F2] “Hide” and [F3] “Show All” keys allow you to control what is shown on the Main Menu.  To hide a seldom used menu item, use the [] and [] keys to highlight the menu item and press the [F2] “Hide”...
Page 35: Common Job Functions
User Manual Gen II 3.4. – Common Job Functions NOTE The functions listed below will apply to all job types listed on the Main Menu. The job types shown in the screenshots below (i.e. Propeller Balance) are for reference only. 3.4.1.
Page 36: Manage Jobs
User Manual Gen II 3.4.3. – Manage Jobs Selecting “Manage Jobs” from within a Main Menu Job function presents several sub-menu choices as shown below. These choices allow you to “manage” previously completed job data you have stored in the analyzer. 3-10 –...
Page 37 User Manual Gen II 3.4.3.1. – Review Selecting the “Review” option presents a list of stored jobs on the “Job List” banner screen. You can select one job for on-screen viewing. Incomplete jobs will be preceded by an “I” inside a square.
Page 38 User Manual Gen II Once you select a job and press [OK], a progress indicator will be displayed. During this process, the analyzer will display the “Creating Report” banner screen. As progress is made in completing the report, the page number and status bar will update. After the report is created, the screen will change to indicate that the process is complete.
Page 39 User Manual Gen II 3.4.3.2.1. Transfer Reports Press the [HOME] key to return to the Main Menu. The Status Pane will show any pending reports, which will be transferred to the USB memory device then stored in the “aces_reports” folder of the USB memory device. Whenever reports are pending, the [F1] “Xfer Rpt” button is visible as shown below.
Page 40 User Manual Gen II The analyzer will display the screen below when the transfer is complete. Press [F5] “Continue” to return to the Main Menu. At this time, it is safe to remove the USB device. After you move the USB memory device to a computer, you can open or print the reports on the computer without the need for any additional software (provided the computer has a PDF reader installed).
Page 41 User Manual Gen II When deleting individual jobs, you will first be presented with a list of available jobs. After selecting the job you want to delete, or when selecting to “Delete All” jobs, you will be asked to confirm your selection. Press either [F1] “Yes” to continue with the deletion, or [F5] “No”...
Page 42 User Manual Gen II Once the operation is complete, you will be returned to the applicable job function menu (“Main Rotor Track & Balance Jobs” in our example). 3.4.3.4. – Export Selecting the “Export” option presents a list of stored jobs on the “Export Job to USB” banner screen.
Page 43 User Manual Gen II When the export is complete, the screen will display the “Operation Complete” message. Press the [F5] “Continue” key to return to the “Export Job to USB” menu to export another job. 3-17 – Using the Gen II Analyzer Chapter 3 Revision 2.10, April 20...
Page 44: Manage Setups
User Manual Gen II 3.4.4. – Manage Setups Selecting “Manage Setups” presents several sub-menu choices as shown below. These choices allow you to “manage” setups that have been previously stored in the analyzer. 3.4.4.1. – Edit Selecting the “Edit” function displays the “Setup List” screen. Select the setup you wish to edit and press OK.
Page 45 User Manual Gen II the configuration may be slightly different (i.e. tach or sensor position). Making a copy preserves the integrity of the original setup. NOTE When copying a setup, the setup name must be changed. The change can be as simple as adding a “2”...
Page 46 User Manual Gen II Once you select a setup and press [OK], a progress indicator will be displayed as shown below. When the report creation is complete, the message “Report created” will appear. In addition, the “Pending Reports” value will increase by one indicating there is another report ready for transfer to the USB flash drive.
Page 47 User Manual Gen II 3.4.4.4. – Delete The “Delete” option presents you with a list of stored setups. From the list, you may select an individual setup for deletion. After making your selection, you will be asked to verify your intent to delete the selected setup by pressing the [F1] key for “Yes,” or the [F5] key for “No.”...
Page 48 User Manual Gen II 3.4.4.5. – Export The “Export” option presents a list of stored setups on the “Export Setup to USB” banner screen. From the list you may choose a setup to be exported directly to a USB flash drive. The exported setup file is saved in a “.tgz”...
Page 49: Data Management On The Usb Drive
User Manual Gen II 3.5. – Data Management on the USB Drive Your analyzer will come with a USB flash drive intended for transferring data to or from the analyzer. This device is formatted with a FAT32 file system to insure proper operation with the analyzer’s file system.
Page 50: Aces_Export
User Manual Gen II 3.5.2. – aces_export This location contains exported jobs and setups. Data is stored here when you use the “Export” function found inside the Manage Jobs or Manage Setups menu items described above in paragraphs 3.4.3.4 and 3.4.4.5 respectively. 3.5.3.
Page 51: Aces_Setups
Added new screen captures and process for downloading eSetups from the web. 2/15/2016 2.00: Major rewrite generalizing the manual to cover both the Viper II and Cobra II. This chapter was updated East with screenshots from the new website.
Page 52: Propeller Balance (Rev 2.20, Apr 2020)
Viper II Cobra II Because most propeller balancing applications use common accessories, ACES Systems has assembled a propeller balancing kit, described below, which can be purchased with the Gen II Analyzers.
Page 53: Propeller Balancing Kit
The three-pin MS female connector on one end of the cable mates to the 991D -1 sensor. The six-pin MS male connector mates to one of the four (CHANNEL A, B, C, or D) vibration-input ports available on the analyzer. Contact ACES Systems for other sensor, cable, or adapter options.
Page 54 The connectors are constructed of aluminum alloy with olive drab chromate coating for corrosion resistance. The male end connects to the tach input of any ACES Systems’ analyzer/balancer or to the female end of another cable of the same type. The opposite (female, bulkhead) end will accept another 10-320-0126 cable for extension or connect to an aircraft or sensor interface.
Page 55 User Manual Gen II Propeller Protractor The propeller protractor is designed to measure angles in a typical propeller/spinner assembly. The propeller protractor pictured below is a complete circle. It is divided into five-degree increments. Every 15 degrees, the angle is identified by a tick mark. Every 45 degrees, the angle is printed in a circular identifier.
Page 56 User Manual Gen II  Place the protractor over the spinner with the Rotation indicator pointing in the direction of rotation (forward looking aft) and the 360-degree points aligned with the position of the reflective tape.  Read the numbers in the circles, and then interpolate values of the unmarked incremental lines to locate the desired angle.
Page 57 The tape is manufactured by the 3M Company and is the only tape we recommend for use with the system. Contact ACES Systems for replacement tape. (See Chapter 23, “Equipment and Accessory Setup and Troubleshooting” for additional information for high RPM.) ACES Systems Balance Placard Placards similar to the one shown below are included in the propeller balancing kit.
Page 58: Start Job
User Manual Gen II 4.1. – Start Job Selecting “Start Job” from the “Propeller Balance” banner screen allows you to begin a new propeller balance job. When you select this option, one of three screens will appear depending on whether you are: 1) Starting a new job with no setups previously defined in the analyzer’s memory;...
Page 59 User Manual Gen II If you are starting a new job with previously defined setups available in the analyzer’s memory, the screen will automatically display the Select Setup List banner screen similar to the one shown below. The actual setup names will be those, which you have entered into your analyzer. If you are resuming an incomplete job being held in the analyzer’s memory, the opportunity to do so is presented immediately following the “Start Job”...
Page 60: Prop Balance Setup
User Manual Gen II 4.1.1. – Prop Balance Setup The “Prop Balance Setup” banner screen allows you to define and store a propeller balance Setup. The “Prop Balance Setup” banner screen displays fill-in and selection type fields. The fill- in fields have squared off ends ([ ]). These fields are filled in using inputs from the analyzer keypad.
Page 61 Using the [] key, move to the “Max Wts” field. Enter the maximum total trim balance weight (in grams) allowed for this installation. If the manufacturer does not specify a maximum weight, refer to the ACES Systems Guide to Propeller Balancing. The valid range of values for this field is 1 to 9999.
Page 62 User Manual Gen II (Root Mean Square). Typically, you will use Peak if using IPS in the “Vib:” field above. 4.1.1.1.11. Move to the “FSR” field and use the [] key to select the Full-Scale Range for the vibration amplitude you reasonably expect to encounter on this job. For a propeller balance conducted using IPS, a normal selection would be 1.
Page 63 CAUTION Sensors connected to Channel A and Channel B (or Channel C and Channel D in the Viper II) must be of the same type. Using different sensors during the same job will cause erroneous readings and problems achieving good balance results.
Page 64 User Manual Gen II The “Edit ICF” (which corresponds to the [F1] key) selection appears at the bottom left of the “Prop Balance Setup” banner screen. Press the [F1] key if you wish to define the Influence Coefficients for this setup. The following “Edit ICF” banner screen is displayed. If you have selected a two (2) engine balance, the screen will contain individual ICF fields for each engine.
Page 65 User Manual Gen II 4.1.1.2.3. A successful balance job (one that has updated the setup’s ICF) will toggle the “Edit” menu item above the [F3] key. Pressing the [F3] key will display additional function key options giving you the option to press [F1] “Avg=Def” to set the averaged ICF to the default ICF, pressing [F2] “Def by HP”...
Page 66 User Manual Gen II 4.1.1.3. – Sensor Setup Pressing the [F5] “Sensor” key from the “Prop Balance Setup” banner screen displays the “Sensor Setup” banner screen shown below. The information on this screen should correspond to the sensor you selected for this setup in paragraph 4.1.1.1.199 above. 4.1.1.3.1.
Page 67 User Manual Gen II 4.1.1.3.2. When all fields are completed to your satisfaction, press the [OK] key to accept the inputs and continue to the “Prop Hole Layout Setup”. 4.1.1.4. – Prop Hole Layout Setup If “Yes” was selected under the “Holes:” entry in paragraph 4.1.1.1.7 the “Prop Hole Layout Setup”...
Page 68 User Manual Gen II indicate the direction of increasing hole numbers as viewed from forward looking aft. 4.1.1.4.5. Move to the “Max H. Wt” field using the [] key. Using the keypad, enter the maximum allowable weight (in grams) for any single hole. If you do not know this value, refer to the aircraft maintenance manual or the ACES Guide to Propeller Balancing.
Page 69 User Manual Gen II If you selected “Uneven” in paragraph 4.1.1.4.3 – Multiple angle/hole number fields are displayed. Each hole number (“No.”) is automatically populated and its corresponding angle must be defined individually. Using the keypad, complete each field by entering an angular (“Ang”) location as measured opposite the direction of propeller rotation.
Page 70: Job Identification
User Manual Gen II [OK] to accept the settings. The analyzer will return you to the “Propeller Balance Setups” menu. 4.1.2. – Job Identification At this point in the “Propeller Balance” process, you should have completed the following steps: (1) selected “Propeller Balance” from the Main Menu; (2) selected “Start Job;” and (3) completed the “Prop Balance Setup”...
Page 71: Engine Information
User Manual Gen II 4.1.3. – Engine Selection / Engine Information The “Engine Selection” banner screen is displayed. If you have selected a two (2) engine balance setup, the first screen above will be displayed. In that setup you may select to run either, or both the engines within the setup.
Page 72: Connect Sensors
User Manual Gen II 4.1.4. – Connect Sensors The “Connect Sensors” banner screen will be displayed as shown above. Messages that appear on this screen prompt you to perform the physical installation and connection of the tach and vibration sensors to the input ports you specified in the setup. 4.1.4.1.
Page 73 Alternatively, all trim balance weights can be removed before proceeding beyond this point. Refer to the ACES Systems’ Guide to Propeller Balancing (included with your propeller balancing kit) for a full list of FAA-approved inspection requirements.
Page 74: Start Aircraft
User Manual Gen II 4.1.5. – Start Aircraft Prior to performing any dynamic balancing, it is advised to follow the instructions in the ACES Systems’ Guide to Propeller Balancing included with your analyzer for inspections prior to balancing. The document is FAA approved and provides guidelines for the selection and installation of balance weights.
Page 75 User Manual Gen II  “Current Vib:” – The current vibration reading. This value is for monitoring purposes only and is not being recorded. NOTE The Difference between the Desired and Current RPM should not exceed the values outlined in Chapter 24, paragraph 24.2.5 “RPM Warnings”...
Page 76: Review Job
User Manual Gen II percentage of error (Error) in the averaging. If you wish to reset the averaging and take new data, press the [F1] “Reset” key. The data can be viewed in a polar chart format by pressing the [F2] “Polar”...
Page 77 User Manual Gen II If you are satisfied with the results of the run and are ready for a solution, press [OK] to accept the data and continue. If you want to retake data for this run, press the [F1] “Retake #1” key, [F2] “Retake #2”, or [F3] “Retake All”...
Page 78: Balance Solution
User Manual Gen II 4.1.8. – Balance Solution The “Run 1 Existing Weights” screen will appear based on the selection made in step 4.1.1.1.7 above, ONLY after Run #1 andIF the “Holes:” field was set to “Yes”. This is a feature that will allow the existing trim balance weights to remain on for the data collection phase of the job on the first run.
Page 79 User Manual Gen II If you do NOT have existing trim balance weights installed press the [F5] “No” key to proceed to the next step. The solution screen displayed will depend on the selection made in 4.1.1.1.7 above. If the “Holes:”...
Page 80 If the solution exceeds the single location limits of the propeller or spinner assembly (refer to ACES Systems’ Guide to Propeller Balancing included with your analyzer), you may split the weight across two locations.
Page 81 User Manual Gen II The single location solution (in this case 32.4 g @ 270 degrees) is displayed at the top of the screen. The next line states: “Enter New Location.” Use the keypad to complete the next two fields, “Angle 1” and “Angle 2.” Locate the two available weight installation locations (one on each side of the 270-degree location) and enter them in the two fields.
Page 82 User Manual Gen II If you discover a problem with the split weight locations you specified, press the [F1] “Re-split” or [F0] “Back Up” key and enter the two new angles. When the “Actual Installed Weight” fields are completed, press [OK] to continue. The screen will return to the “Balance Solution”...
Page 83 User Manual Gen II In the lower portion of the screen you see an information line stating: “Remove old weights; install and enter new weights.” If the previous dynamic balance trim weights were left installed, as explained in step 4.1.8 above, at this point the existing weights will be removed and replaced with the new solution.
Page 84: Vibration Summary
Then repeat the procedures described above starting with paragraph 4.1.5 until the level of vibration is at or better than an acceptable level. See the ACES Systems Guide to Propeller Balancing for details of vibration levels and weight installation procedures.
Page 85 User Manual Gen II The “Vibration Summary” banner screen will display run number at which the current vibration level was recorded. It will give a brief description of the current engine vibration level. The screen will show the starting vibration magnitude and phase angle on any channels defined in the setup.
Page 86: Resume Job
User Manual Gen II 4.2. – Resume Job The features in this section are common among all jobs. Because of this, they are contained in “Chapter 3, Using the Gen II Analyzer”. 4.3. – Manage Jobs The features in this section are common among all jobs. Because of this, they are contained in “Chapter 3, Using the Gen II Analyzer”.
Page 87: Manage Setups
User Manual Gen II 4.4. – Manage Setups The features in this section are common among all jobs. Because of this, they are contained in “Chapter 3, Using the Gen II Analyzer”. 4.5. – Weight Calculator CAUTION If test weights were used on the spinner, they must be removed before installing any permanent weights.
Page 88 User Manual Gen II The weight calculator, as shown below, can be used for placement of the final balance weights. This function can be accessed by using the [F3] “WtCalc” function key from the “Balance Summary” screen shown in paragraph 4.1.9 above . For your convenience, this function can also be accessed at any time from the “Propeller Balance Jobs”...
Page 89 User Manual Gen II  The “Split Angle” toggle field allows you to split the weight across two locations. Selecting “No”, the final weight solution will be installed at a single weight location as shown below.  By selecting “Yes” in the “Split Angle” field, the “Set Split Weight” screen is displayed as shown below.
Page 90 1.02: Added text about the Polar Chart view. Main Polar view explanation in Chapter 24. Lucas 2/17/2016 2.00: Major rewrite generalizing the manual to cover both the Viper II and Cobra II. This chapter was updated East with screenshots and corrections to minor typographical errors.
Page 91: Reserved (Rev 1.00, Dec 2014)
Chapter 5 RESERVED (Revision 1.00, Dec 2014)
Page 92: Reserved (Rev 1.00, Dec 2014)
Chapter 6 RESERVED (Revision 1.00, Dec 2014)
Page 93: Main Rotor Track & Balance (Rev 3.00, Apr 2020)
Chapter 7 Main Rotor Track & Balance (Revision 3.00, April 2020) This section is intended to familiarize you with the various electronic chart forms and setup screens used with the Gen II Analyzer–first by looking at each of the chart forms found in the main rotor section, then by using these forms to create an actual setup.
Page 94 20 alphanumeric characters. CAUTION Sensors connected to Channel A, Channel B, (or Channel C and Channel D in the Viper II) must be of the same type. Using different sensors during the same job will cause erroneous readings and problems achieving good balance results.
Page 95 User Manual Gen II 7.1.1.7. Press the [] key to move to the “Number of Weight Positions” field. Using the [] key, select the total number of lateral balance weight positions as determined from the lateral balance chart. The maximum number of positions equals 6. 7.1.1.8.
Page 96: Tracking Setup Screen
User Manual Gen II  “Both” = measurement and storage of both vibration and track for the listed condition  “Vib” = measurement and storage of vibration only for the listed condition  “Trk” = measurement and storage of track only for the listed condition When all conditions and measurement types desired have been input to your satisfaction, press [OK] to continue.
Page 97 User Manual Gen II device. Use the keypad to enter a number between -180 to 180 degrees. For more information on Blade 1 Offset see the paragraph 2.4 of the Model 550 Aces TraX Operational Supplement. 7.1.2.5. Use the [] key to move to the “In. from Mast CL” block. This will define the linear distance, as measured in the same plane as the tracker is mounted, from the tracker to the extended centerline of the mast.
Page 98: Main Rotor Condition Setup Screen
User Manual Gen II 7.1.3. – Main Rotor Condition Setup Screen English Metric The “Main Rotor Condition. Setup” screen appears. The purpose of this screen is to allow the user to enter an “ID” number for each polar chart or tracking influence to be used by the analyzer when determining if a solution is required.
Page 99 User Manual Gen II Looking at the example main rotor conditions setup screen above, three charts will be used, two vertical and one lateral. One tracking influence definition will also need to be created. The first chart is for vertical measurements at hover only. The second chart is for the averaged vertical measurements from both FLT 80 and FLT 120.
Page 100: Main Rotor Adjustment Symbol And Solution Logic Screen
User Manual Gen II The last example shows one lateral chart and two track adjustment ID entries. The lateral measurements for both Ground and Hover will be averaged, with the solution based on this average. The recorded track split for Ground and Hover will be averaged with one solution based on this average.
Page 101 User Manual Gen II The “M/R Adj Symbol & Soln Logic” screen appears as shown. This screen is used to establish the direction of move for a positive adjustment as determined by the charts. For example, if the selection of “Sweep (AFT)” is made, when the analyzer gives an adjustment for blade sweep to move a blade “4 flats”, the actual movement of the blade is 4 flats aft.
Page 102: Chart Definition
User Manual Gen II “All”, the analyzer will present all of the available solutions for vertical, lateral and track readings. Analyzers with App Version Service Pack 5 and subsequent* The two solution options are “Max” and “Avg”. “Max”, Unchanged from Service pack 1-4. the analyzer will present the solution for the highest vibration reading attained for the vertical and lateral sensors.
Page 103 User Manual Gen II Rotor diameter: 37.0 Feet. Lead/lag units are read in inches. Rotor speed: 385 RPM/ 7-11 – Main Rotor Track & Balance Chapter 7 Revision 3.00, Apr 2020...
Page 104 User Manual Gen II 7.1.6.1. – Main Rotor Setup Screen  The name of the setup has been labeled as “EXAMPLE 1”.  Vertical vibration will be measured on channel “A”.  Lateral vibration will be measured on channel “B”. ...
Page 105 User Manual Gen II  Tab Adj Decimal set to “3”  Rotors, a single rotor is chosen.  Four conditions have been entered for this job, “GROUND”, “HOVER”, “80 KTS”, and “120KTS”. Both track and vibration will be measured and recorded for this setup. Press [OK] to proceed to the next screen.
Page 106 User Manual Gen II 7.1.6.3. – Main Rotor Conditions Setup Use the sample polar charts in paragraph 7.1.6. In the “Main Rotor Conditions Setup” screen above, two vertical charts and one lateral chart have been identified. The first vertical chart, ID number “1”, will be used for a vertical measurement in hover only, while the second vertical chart, ID number “2”, is for the average vertical measurement of both “FLT 80”...
Page 107 User Manual Gen II In the “Main Rotor Adj Symbol & Soln Logic” setup screen above, the positive numeric value in a solution screen has been identified as ADDING weight, sweeping a blade FWD , moving a blade UP using either pitch change links or tabs. The solution logic has been set to “MAX” and will present the solution related to the highest vibration readings attained for the vertical and lateral sensors.
Page 108 User Manual Gen II  The name of the chart, “Vert: HOVER”, has been automatically entered from the “Main Rotor Conditions Setup” screen and is non-editable.  The chart type is “Regular”.  This chart uses no sweep adjustments, and is therefore left as “No”. ...
Page 109 User Manual Gen II The “Vert: 80 KTS – 120KTS ” chart setup screen appears next. Use the vertical vibration chart in paragraph 7.1.6, to complete the steps below and properly define this chart.  The name of the chart, “Vert: 80 KTS – 120KTS ”, has been automatically entered from the “Main Rotor Conditions Setup”...
Page 110 User Manual Gen II 7.1.6.7. – Lateral Hover Chart The last chart defined will be “Lat: HOVER”. Use the lateral vibration chart in paragraph 7.1.6, to complete the steps below and properly define this chart.  The name has been automatically entered as “Lat: HOVER” from the “Main Rotor Conditions Setup”...
Page 111: Main Rotor Balance Process
User Manual Gen II  The third Bld/Pos name entered is “BLANK”, utilizing an adjustment unit of “GMS” weight. The influence co-efficient for this point is “200.00” grams adjustment per “1.0” IPS vibration. The Move line for this position is “2:30”. ...
Page 112: Starting A New Job
User Manual Gen II 7.2.1. – Starting a New Job Selecting “Start Job” from the “Main Rotor Track & Balance” banner screen allows you to begin a main rotor balance job. When you select this option, one of three screens will appear next depending on whether you are using the main rotor function for the first time, have previously defined main rotor setups, or have a previously started job stored in the analyzer.
Page 113: Setup List
User Manual Gen II 7.2.2. – Setup List The setup list presents the stored main rotor setups in analyzer memory. Select the setup you wish to use by highlighting the name of the setup using the [] key and pressing [OK]. If the setup you need is not present, press the [F1] “New”...
Page 114: Connect Sensors
User Manual Gen II If the analyzer has been used previously, a list of customer names and/or A/C Reg numbers will have been stored and are accessed by pressing the [F1] “Cust” or [F2] “A/C Reg” keys respectively. A name can then be selected from this list for use with this job. When finished, press [OK].
Page 115 – Optical Tachometer Setup (Optional) To install the optical tachometer, do the following:  If not specifically provided by an ACES Systems Application Note or manufacturer’s directions, locate a position that allows the Phototach to be installed not more than 18 inches away or closer than 4 inches from a rotating main rotor component.
Page 116: Select Aircraft Condition
User Manual Gen II 7.2.4. – Select Aircraft Condition Once the aircraft is started and at operating speed, use the “Select Condition” screen to view and chose the conditions that were defined in the setup; each preceded by a set of brackets. To measure a condition, highlight it using the [] key and press [OK].
Page 117: Data Acquisition
User Manual Gen II 7.2.5. – Data Acquisition Upon selecting to acquire a measurement, the data acquisition screen appears. The screen banner will contain the run number as well as the condition being measured. At this point vibration and track data will be collected simultaneously. Within the screen, the analyzer will present the “Average”...
Page 118: Review Prior Runs Data
User Manual Gen II 7.2.6. – Review Prior Runs Data The “Review Prior Runs Data” screen will now appear presenting the Vibration data and Track data for the current run and condition. The data will be displayed in the order of the current run and first condition measured. From this first screen, press the [] key to proceed to the next condition measured for the current run.
Page 119: Solution Screens
User Manual Gen II When you have completed reviewing the data, and all conditions data has been collected press [OK] to continue to the solution screens. 7.2.7. – Solution Screens The number and type of solutions presented will depend upon the data gathered and the targets that were set for each of the measurement types in the “Conditions Setup”...
Page 120 User Manual Gen II performed, or skipped. If the analyzer presents a solution and you choose not to apply it on the current run, you are required to zero out the adjustment entries in the recording screen for that particular adjustment. If you believe that the current ICFs are correct and the impact of one adjustment on another will be minimal, it is possible to make multiple adjustments during a single run by pressing the [F1] “All Adj”...
Page 121 User Manual Gen II  [F2] “Inst=None” key will delete all “Installed” field entries. This function is used when a particular adjustment is to be skipped on the current run.  [F3] “Collected” – Displays the “Review Prior Run(s) Data” screen ...
Page 122 User Manual Gen II – Example Solution Screen #3 The last correction given for our sample job is for the Track adjustment using trim tabs. The solution type for this adjustment is degrees on the trim tab. NOTE The analyzer will attempt to give solutions that “resolve to zero” in all cases. This may nullify the ability to make some adjustments with any degree of accuracy.
Page 123: Main Rotor Manage Data Functions
User Manual Gen II 7.3. – Main Rotor Manage Data Functions The main rotor “Review Job” function presents chart information, correction history, and influence co-efficient for the job. The following paragraphs will describe these new screens and how to navigate through them to review this information. 7.3.1.
Page 124: View Main Rotor Track And Balance
User Manual Gen II  To review different conditions within the same run, press either the [] or [] key.  To review data for a different run, press either the [] or [] key.  To view adjustments made for the current run, press the [F1] “ViewAdj” key. See paragraph 7.3.2.
Page 125: View Main Rotor Chart
User Manual Gen II 7.3.3. – View Main Rotor Chart The “View M/R Chart” screen gives the chart name, chart type, default magnitude of adjustment, name and adjustment ratio of each blade position.  Pressing the [] or [] keys will toggle between multiple chart types if more than one is defined for the setup.
Page 126: View Main Rotor Chart Icfs
User Manual Gen II 7.3.4. – View Main Rotor Chart ICFs The “View M/R Chart ICFs” screen shows how the influence coefficient magnitude and rotation was changed as a result of the correction made on each run. Because the analyzer continues to learn between runs, it is very important to ensure accurate data entry for the actual correction made during each run.
Page 127: Resume Job
User Manual Gen II 7.4. – Resume Job The features in this section are common among all jobs. Because of this, they are contained in Chapter 3, “Using the Gen II Analyzer”. 7.5. – Manage Jobs The features in this section are common among all jobs. Because of this, they are contained in Chapter 3, “Using the Gen II Analyzer”.
Page 128: Manage Setups
User Manual Gen II 7.6. – Manage Setups The features in this section are common among all jobs. Because of this, they are contained in Chapter 3, “Using the Gen II Analyzer”. 7.7. – Analyzer Chart Forms Just as in the case with polar balance charts, there are two types of analyzer chart “forms” used with the Analyzer and one tracking influence setup screen.
Page 129 User Manual Gen II 7.7.1.1. – Regular Main Rotor Chart Setup The main rotor balance chart shown to the right depicts three weight positions, Red, Yellow, and Blue. The move line for each position has been indicated with an arrow, the type of adjustment given below the chart is “Plates”.
Page 130 User Manual Gen II No Adjustment Bld/Pos.: This field is used to designate a main rotor blade as a “no adjustment blade”. This feature is used when the OEM suggests that no adjustments be applied to a particular blade during a track and balance job. An optimized solution is provided by the analyzer that requires no adjustments to the designated “No Adjustment Blade”.
Page 131: Irregular Chart Forms
User Manual Gen II NOTE Blade position names must be entered sequentially in either clockwise or counter clockwise order. It does not matter what direction is chosen. 7.7.2. – Irregular Chart Forms Any polar chart that does not fit the “Regular”...
Page 132 User Manual Gen II Chart Type: Press either the [] or [] keys to select the chart type. For this example, select “Irregular”. Sweep Only: This field is used when defining a chart that incorporates sweeping of the blades as the only means of adjustment.
Page 133: Tracking Influence Setup
User Manual Gen II angle is 30. Perform this for each adjustment point shown on the chart and the setup is complete. The move line for the T AFT position will be 5:30. The move line for the BLANK position will be 8:30. B AFT will have the move line at 11:30. NOTE Blade position names must be entered sequentially in either clockwise or counter clockwise order.
Page 134 1.02: Added text about the Polar Chart view. Main Polar view explanation in Chapter 24. Lucas 2/12/2016 2.00: Major rewrite generalizing the manual to cover both the Viper II and Cobra II. This chapter was East updated with screenshots and corrections to minor typographical errors.
Page 135: Tail Rotor Balance (Rev 3.00, Apr 2020)
Chapter 8 Tail Rotor Balance (Revision 3.00, April 2020) This section is intended to familiarize you with the various electronic chart forms and setup screens used with the Gen II Analyzer, first by looking at each of the chart forms found in the tail rotor section, then by using these forms to create an actual setup.
Page 136 User Manual Gen II  In the “Name” field, enter a name for the setup using the keypad.  Press [] to move to the “Sensor Channel” field. Use the [] key to select the vibration sensor channel for this setup. ...
Page 137: Tail Rotor Chart Setup
User Manual Gen II choose “Dont Care” regardless of the actual direction of rotation of the tail rotor. For further guidance contact Aces Support at support@acesystems.com.  Press the [] key to move to the “Number of Blades” field. Using the keypad, enter the number of blades on the tail rotor.
Page 138 User Manual Gen II  Press the [] key and select the chart type by pressing the [] key. The type of chart for this example is “Irregular”. See paragraph 8.8.1 for more information on chart type “Regular” and paragraph 8.8.2 for chart type “Irregular”. ...
Page 139: Tail Rotor Setup Screen
User Manual Gen II 8.2.1. – Tail Rotor Setup Screen Using the instructions outlined in paragraph 8.1.1 to complete the “Tail Rotor Setup” screen as shown in the screenshot above. When finished with the main setup screen, press [OK]. 8.2.2. –...
Page 140 User Manual Gen II  Press the [] key to move to the name field for the second condition.  Press the [] key to assign the next chart ID. If the tail rotor requires different charts as shown above, the ID’s will be 1 and 2. If all conditions use the same chart all of the ID numbers will be 1.
Page 141: First Condition Tail Rotor Chart Setup Screen
User Manual Gen II 8.2.3. – First Condition Tail Rotor Chart Setup Screen 80% Balance Chart The “Tail Rotor Chart Setup” screen for the first condition (80%) appears next. Using the tail rotor polar chart above, fill in the appropriate information as follows: ...
Page 142: Second Condition Tail Rotor Chart Setup Screen
User Manual Gen II  Press the [] key to enter the grams per IPS influence for the tail rotor. This example uses “100.00” grams.  Press the [] key and enter the first weight position name as “TARGET”.  Press the [] key and enter the “Add @”...
Page 143 User Manual Gen II 100% Balance Chart + Target  The name for the chart, “100%”, has already been inserted from the “Tail Rotor Condition Setup” screen.  Press the [] key and select the chart type by pressing the [] key. The type of chart for this example is “Regular”.
Page 144: Tail Rotor Balance Process
User Manual Gen II 8.3. – Tail Rotor Balance Process The following paragraphs present the tail rotor balance process and its associated screens. It is intended to familiarize the user with the data acquisition and correction capabilities of the Gen II analyzers. Prior to starting a new tail rotor balance job, you must first select the “Tail Rotor Balance”...
Page 145: Setup List
[] key and pressing [OK]. If the setup you need is not present, you can download a setup from the ACES Systems Website Technical Library. Alternatively, you can create the setup by pressing the [F1] “New” key to proceed to the “Tail Rotor Setup”...
Page 146: Job Identification
User Manual Gen II 8.3.3. – Job Identification The “Job Identification” banner screen appears next allowing entry of the customer name, A/C registration, and A/C total time. This information is optional, but it is suggested that at least a customer name be entered, as it will aid in identifying the job for future use. If the analyzer has been used previously, a list of customer names and/or A/C Reg numbers will have been stored and are accessed by pressing the [F1] “Cust”...
Page 147: Start Aircraft
User Manual Gen II The “Connect Sensors” banner screen will be displayed next. Messages that appear on this screen prompt you to perform the physical installation and connection of the tachometer and vibration sensors to the input ports you specified in the applicable setup. ...
Page 148: Select Tail Rotor Condition Screen
User Manual Gen II 8.3.6. – Select Tail Rotor Condition Screen If multiple conditions were configured in the setup, the “Select Tail Rotor Condition” screen will be displayed allowing the user to select the applicable condition to acquire data. This screen will only appear in “Multiple Condition”...
Page 149 User Manual Gen II error indication associated with the averaged measurement. The numeric error value will typically lower rapidly when the amplitude of vibration is high. The top line of this screen can display three different status messages. The messages are: “Waiting for Data”...
Page 150: Review Prior Run(S) Data
User Manual Gen II  If performing a tail rotor balance job consisting of more than one condition, the “Select Aircraft Condition” screen will appear. Select the condition desired and press [OK]. When data has been collected at all of the conditions, the condition boxes will have “X’s”...
Page 151: Shut Down Engines
User Manual Gen II  If the setup has more than one condition, press the [F2] “Next Cond” key to view the data for the second condition.  Pressing the [F3] “Polar” key will display the data in a polar chart format. When finished reviewing, press [OK] to continue to the solution process.
Page 152: Tail Rotor Suggested/Installed Weights Screen
User Manual Gen II 8.3.11. – Tail Rotor Suggested/Installed Weights Screen The “T/R Suggested / Installed Weights” screen appears displaying the suggested adjustments and providing for input of the actual changes made to the tail rotor prior to the next run. It is extremely important that these changes are entered, as they will be used to update the influence co-efficient for the next run.
Page 153: Tail Rotor Re-Solve Feature
User Manual Gen II  Pressing the [F2] “None” key will delete all “Installed” entries. This function is used when an adjustment is to be skipped on the current run.  Pressing the [F3] “Re-Solve” key will allow you to find an alternate solution. This may be used when weight is already attached to the tail rotor or the suggested weights are smaller than the minimum hole weight.
Page 154 User Manual Gen II In the example above, the suggested weight is smaller than the minimum weight; a bolt and nut, which are required to attach hardware (attach hdw). The weight of this hardware must be included in the final weight installation. In this case, press the [F3] “Re-Solve” key to find an alternate solution.
Page 155 User Manual Gen II enter the negative sign before the removed weight value. When all weights have been weighed, removed from the tail rotor, and entered into the appropriated field, press the [OK] key to re-solve the balance solution. Now the solution presented on the top half of the “T/R Suggested/Installed Weights” screen below “Run 1 Suggestion:”...
Page 156: Tail Rotor Manage Data Functions
User Manual Gen II Once the solution has been applied, press [OK] to return to the “Start Aircraft” screen for the next run. Repeat the data acquisition and solution application process to verify the adjustments have brought vibration readings below limits. Once you have decreased vibration levels to below the Limit / Target entered in the setup, you will be presented with the Balance Status screen shown below.
Page 157: View Tail Rotor Balance
User Manual Gen II 8.4.1. – View Tail Rotor Balance After selecting to review a job, the “View T/R Balance” screen appears showing the run number, RPM at which the data was acquired, amplitude and clock angle of the vibration, and suggested, as well as the installed, corrections to the rotor.
Page 158: Resume Job
User Manual Gen II (below top). The second gives the influence co-efficient and phase angle rotation changes for each run (below bottom). Any additional charts will have similar screens to view. Pressing [F5] “Continue” will progress through all available screens for all conditions. When returned to the “View T/R Balance”...
Page 159: Manage Jobs
User Manual Gen II 8.6. – Manage Jobs The features in this section are common among all jobs. Because of this, they are contained in Chapter 3, “Using the Gen II Analyzer”. 8.7. – Manage Setups The features in this section are common among all jobs. Because of this, they are contained in Chapter 3, “Using the Gen II Analyzer”.
Page 160: Analyzer Chart Forms
User Manual Gen II 8.8. –Analyzer Chart Forms Just as in the case with polar balance charts, there are two types of analyzer chart “forms” used with the analyzer. The chart forms are also categorized as either “Regular” or “Irregular”. The selection of setup type is made within the chart form itself by using either the [] or [] keys to toggle between “Regular”...
Page 161 User Manual Gen II Name: The name of the chart will be automatically inserted from the “Tail Rotor Setup Screen” name field and is not editable. Chart Type: Use [] or [] key to select the chart type. For this example, the type is “Regular”.
Page 162: Irregular Chart Forms
User Manual Gen II NOTE Weight position names must be entered sequentially in either clockwise or counterclockwise order. It does not matter what direction is chosen. 8.8.2. – Irregular Chart Forms The tail rotor balance chart shown to the right represents four adjustment points, all of which utilize the addition of weight as a correction type.
Page 163 1.02: Added text about the Polar Chart view. Main Polar view explanation in Chapter 24. Lucas 2/12/2016 2.00: Major rewrite generalizing the manual to cover both the Viper II and Cobra II. This chapter was East updated with screenshots and corrections to minor typographical errors.
Page 164: Transient Balance (Viper Ii Only) (Rev 2.10, Apr 2020)
(Viper II only) (Revision 2.10, Apr 2020) “Transient Balance” is an analyzer function that is only available in the Viper II analyzer. It is accessed from the analyzer’s Main Menu banner screen as shown in the illustration below. Selecting this function from the Main Menu produces the “Transient Balance” banner screen menu (also shown below).
Page 165 User Manual Gen II If another job was in progress but was not completed, the “Incomplete Job” banner screen will be displayed to inform you of this. The displayed message will give you the details of the last incomplete job and provide the opportunity to resume it. Pressing the [F1] “Yes” key will return you to the last logical in-progress step of the job.
Page 166: Transient Balance Setup
User Manual Gen II “Transient Balance Setup” Screen. If you are starting a new job with no setups previously defined in the analyzer’s memory, the screen will automatically display the Transient Balance Setup banner screen shown below. See paragraph 9.1.1 below for step-by-step instructions on completing the Transient Balance Setup.
Page 167 User Manual Gen II or optional USB keyboard. The selection fields have pointed ends (< >). These fields have two or more preset values that are selected by using the [] and [] keys. Navigate between the fields on this screen using the [] and [] keys. (Refer to Chapter 3, “Using the Gen II Analyzer”...
Page 168 User Manual Gen II by noting the direction the fan rotates as viewed from behind the fan looking forward out of the intake. 9.1.1.6. Using the [] key, move to the “Num Baln Planes” field. Use the [] key to select the total number of rotational balance planes on this engine type.
Page 169 User Manual Gen II 9.1.1.11. Use the [] key to move to the “Baln Weight Unit:” field. Use the [] key to select “g” for grams or “oz” for ounces. You will use this unit of measurement to define your class weight set. If using Actual Weights, this defines the units of measure in which the balance solution will be presented.
Page 170: Sensor Information Screen
User Manual Gen II 9.1.2. – Sensor Information Screen 9.1.2.1. In the “Eng ID:” (engine identification) field use the numeric keypad to enter the number of the engine. Press the [] key to move to the next field. 9.1.2.2. Use the [] to select the “Tach Chan” (tachometer channel) you will use for this job.
Page 171: Transient Balance Speeds Screen
User Manual Gen II 9.1.2.6. Use the [] key to select the “Tach Filter Type”. The options are for a Single pole filter, a Double pole filter or None. 9.1.2.7. Use the keypad to enter the “Tach Filter Frequency”. Enter a numeric value equal to the lowest frequency of interest.
Page 172 User Manual Gen II 9.1.3.1. In the “Num Balance Speed Bands:” field, use the [] key to select the number of separate speed ranges you wish to configure for the balance run. The default is “1” This would be appropriate for performing an acceleration balance on an engine with no “Cautionary Ranges”...
Page 173: Define Class Wts Screen
User Manual Gen II greater than 20% of the value entered in the “Actual RPM @ 100%” field (Para 9.1.1.15 above). 9.1.3.6. Press the [] key to move the cursor to the next speed field under the “Speeds” columns. Use the keypad to enter a maximum speed for the first speed band. The speed may be entered as N1% or actual RPM.
Page 174 User Manual Gen II 9.1.4.1. In the “Set ID” field, use the keypad to enter a name or part number for the class weight set you are about to define. The Set ID should be one that is recognizable and commonly used by everyone who will be using this setup to balance.
Page 175 User Manual Gen II 9.1.4.5. Use the [] key to move to the “Add/Remove” field. The possible selections are “Add/Remove” which allows you to 1) add and remove weights to implement a balance solution, 2) Free Form, which allows you to add, remove and even reassign weights as necessary to implement a balance solution, 3) Remove then Add, which requires that the previously installed weights be removed completely before installing a new set of weights to implement a balance solution and 4) Add Only, which dictates...
Page 176: Balance Plane Information Screen
User Manual Gen II 9.1.5. – Balance Plane Information Screen 9.1.5.1. The “Plane ID:” field displays the identifying number for the first balance plane information. You will complete one of these information screens for each balance plane as defined in paragraph 9.1.1.6 or 9.1.1.7 above. If you defined only one balance plane, you will only complete one Balance Plane Information screen.
Page 177 User Manual Gen II 9.1.5.3. Use the [] key to move to the “Num Positions:” (number of weight positions) field. Use the numeric keypad to enter a number equal to the total number of positions where balance weights may be attached for this balance plane only. 9.1.5.4.
Page 178 User Manual Gen II angle to each position number based on the other information you provide in this screen. Any unequal spacing of even a single position dictates that you use the Uneven setting. If using the Uneven setting, an additional screen displaying a table will be displayed when you leave this screen.
Page 179 User Manual Gen II However, if multiple complete weight sets are allowed on the balance plane, you can switch between these sets inside the job during the solution process. 9.1.5.15. Use the [] key to move to the “Trial Wt” field. Use the numeric keypad to enter a weight in grams or ounces (as defined in paragraph 9.1.1.11 above) for the analyzer to use as a trial weight in the first balance run.
Page 180: Label Detail Wt Holes Screen
User Manual Gen II (“Ang”) location and its corresponding position number (“No.”) as measured opposite the direction of fan rotation as viewed from the perspective selected in paragraph 9.1.5.11 above. Use the [] and [] keys to move between these fields. To determine these values, do the following.
Page 181: Define Transient Balance Icfs Screen
User Manual Gen II hole number and an <-X->. The X symbolizes that a Detail Weight is located in this hole and it is not available for trim balancing. 9.1.7. – Define Transient Balance ICFs Screen 9.1.7.1. The “Plane ID:” field displays the identifying number for the balance plane being configured.
Page 182: Start Job
User Manual Gen II 9.1.7.6. The “N1%” field identifies the N1 speed for which the ICF is configured. At least one ICF speed must be identified. If no known ICF speeds are available, this value will typically be “20” or “100”. 9.1.7.7.
Page 183 User Manual Gen II 9.2.2. – Engine Information Screen 9.2.2.1. The Engine Information screen will be displayed where you may enter the optional information of Position, Engine S/N, Type, TSO, TSN, and Cyc. Complete each field as necessary using the analyzer keypad. If Engine Serial Numbers have previously been entered in this analyzer, you may optionally press the [F3] “Eng S/N”...
Page 184 User Manual Gen II 9.2.3. – Label Detail Wt Holes Screen 9.2.3.1. If you selected to label detail weights in the Job in paragraph 9.1.1.10 above, the “Label Detail Wt Holes” screen will appear. Complete as shown in paragraph 9.1.6 above.
Page 185 User Manual Gen II 9.2.5. – Start Aircraft for Acceleration (Run 1) 9.2.5.1. The “Start Aircraft” banner screen, shown below, will be displayed with several informational messages. The Run number indicates which run of the balance job is currently being collected. The second line states “Perform FOD check, start engine per flight manual and set engine(s) to idle.”...
Page 186 User Manual Gen II 9.2.5.3. Begin the acceleration or deceleration at such a rate to maintain a green ribbon in the scale. The rate will be determined by the RPM range from the balance speeds entered in paragraphs 9.1.1.14 and 9.1.1.15 and the ramp time entered in paragraph 9.1.3.4. If your rate is too fast, the ribbon will turn red and the message “Too Fast”...
Page 187 User Manual Gen II and Deg (phase angle) collected on all runs up to this point. Pressing the [] or [] keys will allow you to navigate through the readings from all runs of the current job. Press the [OK] key to acknowledge the message and continue to the shut down the engine(s) screen.
Page 188 User Manual Gen II This screenshot displays a plot using a basic This screenshot displays a plot using a configuration of a single sensor and a single configuration with multiple sensors and multiple speed band in an Acceleration run. The function speed bands in both an Acceleration and keys available are;...
Page 189 User Manual Gen II 9.2.5.7. After displaying a brief “Optimizing Solution” status indicator, the “Run 1 Existing Weights?” screen will be displayed. This screen will only appear after Run #1. Select “F1 Yes” if the first run was conducted with the previous trim balance weight installed.
Page 190 User Manual Gen II the class weight for that location and repeat until all existing weights are entered into the analyzer and then press [OK] to continue. 9.2.5.9. Pressing the “F6 Graph” key on the previous screen will present the “Run 1 Existing Weights”...
Page 191 User Manual Gen II installation of class weights. Identified in the Name: Plane # line as HF120 TRM WT (this will be the name of the default class weight set as specified in paragraph 9.1.5.14 above). The left column, with a heading of “Posn”, shows the suggested position (or preferred term selected in paragraph 9.1.5.2 above) for each class weight.
Page 192 User Manual Gen II 9.2.5.11. The function keys operate as described below:  [F1] “Inst=None” key – This will return all “Installed” values to the null or “0” weight. Once pressed, the [F1] menu will change to “Inst=Sugg”. This will return all “Installed” values to the values listed under the center “Suggest”...
Page 193 User Manual Gen II  [F4] “Sel Pla/Wt” – Appears if optional balance planes or multiple class weight sets are configured in the setup. Displays the “Select Plane / Class Wt Set” screen and allows you to select another balance plane and/or weight set. ...
Page 194 User Manual Gen II 9.2.6. – Start Aircraft for Acceleration (Run 2) 9.2.6.1. The screen will again display the Start Aircraft banner screen and indicate a new Run number. From this point, repeat paragraphs 9.2.5 to 9.2.5.1111 until the vibration amplitude is reduced to an acceptable level or below the target amplitude entered in the setup.
Page 195 User Manual Gen II 9.2.6.3. If certain criteria were not met indicating a good job, you will see the message below telling you the ICF was not updated. However, you have the option to update or discard the ICF. If the balance job was satisfactory with few runs, it may be acceptable to update the ICF.
Page 196 User Manual Gen II 9.4. – Manage Jobs The features in this section are common among all jobs. Because of this, they are contained in Chapter 3, “Using the Gen II Analyzer”. 9.5. – Manage Setups The features in this section are common among all jobs. Because of this, they are contained in Chapter 3, “Using the Gen II Analyzer”.
Page 197 Lucas 2/17/2016 2.00: Major rewrite generalizing the manual to cover both the Viper II and Cobra II. This chapter only applies to East the Viper II and the generalization has minimal impact. This chapter was updated with corrections to minor typographical errors.
Page 198 (Viper II only) (Revision 2.10, Apr 2020) “Fan/Turbine Balance” is a function that is only available in the Viper II analyzer. It is accessed from the analyzer’s Main Menu banner screen as shown in the illustration below. Selecting this function from the main menu brings up the “Jobs and Setups” banner screen menu (also shown below).
Page 199 User Manual Gen II “Incomplete Job” If another job was in progress but was not completed, the “Incomplete Job” banner screen will be displayed to inform you of this. The displayed message will give you the details of the last incomplete job and provide the opportunity to resume it. Pressing the [F1] “Yes”...
Page 200 User Manual Gen II “Fan/Turbine Balance Setup” Screen. If you are starting a new job with no setups previously defined in the analyzer’s memory, the screen will automatically display the “Fan/Turbine Balance Setup” banner screen shown below. 10.1.1. – Fan/Turbine Balance Setup Screen The “Fan/Turbine Balance Setup”...
Page 201 User Manual Gen II To complete the “Fan/Turbine Balance Setup” banner screen (shown below), do the following: 10.1.1.1. In the “Name” field, enter a name for this setup using the keypad. The name you choose will aid you in differentiating this setup from other stored setups should you choose to use or review it at a later time.
Page 202 User Manual Gen II when attempts to balance on the primary balance plane do not yield the desired results. 10.1.1.6. Using the [] key, move to the “Balance Wt Type:” field. The balance weight type is a description of the balance weights for this application. Use the [] key to select from Actual, Class, or Both.
Page 203 User Manual Gen II 10.1.1.10. Move to the “Num Sens/Eng:” field using the [] key. Select the number of sensors you will use on each engine by using the [] key to scroll between the selections. This selection will define total number of sensors being used on each engine for the balance job.
Page 204 User Manual Gen II applicable Maintenance Manual if you are not familiar with the modifier used for this application. 10.1.1.17. When all fields are completed as required, press [OK] to proceed. 10.1.2. – Fan/Turbine Balance Speeds Screen 10.1.2.1. If you selected a number of balance speeds in paragraph 10.1.1.11 above, the “Fan/Turbine Balance Speeds”...
Page 205 User Manual Gen II 10.1.2.4. Use the [] key to move to the toggle field at the bottom of the screen. This field gives you the option to use the Actual Speeds acquired during the first run as the target speeds for all subsequent runs OR use the speeds defined on this screen as the target for ALL runs.
Page 206 User Manual Gen II 10.1.3.3. Use the [] key to move to the “SplitErr:” field. Use the numeric keypad to enter a number that will be used to determine the maximum amount of error between the suggested solution and the available class weight placement combination.
Page 207 User Manual Gen II input. If you have specified more than one class weight set for this setup in paragraph 10.1.1.7 above, another Define Class weight screen will be displayed, such as the two screens below, when you press [OK] to store the current screen and continue.
Page 208 User Manual Gen II 10.1.4.2. Use the [] key to move to the “Posn Type:” field. This field will define the terminology used to refer to the weight locations throughout the balance job. The choices in this field are <Position>, <Hole> or <Blade>. After you exit this field the remaining references will change to the selected term.
Page 209 User Manual Gen II 10.1.4.8. Use the [] key to move to the “in/mm” toggle field. This field is used to define the Radius measurement and will only appear if an optional balance plane is identified in paragraph 10.1.1.5 above. Use the [] key to select “in” (inches) or “mm”...
Page 210 User Manual Gen II 10.1.4.13. Use the [] key to move to the “MaxWt/Plane" (maximum weight for this balance plane) field. Enter a numeric value to define the maximum total number of grams or ounces (as defined in paragraph 10.1.1.9 above) allowed for installation on this balance plane.
Page 211 User Manual Gen II 10.1.4.17. If you selected “Uneven” in step 10.1.4.9 above, the “Angle of #1 Posn:” field will not be displayed, but when you press [OK] the multiple angle/position number fields are displayed as shown in the example above. Each position angle must be defined individually.
Page 212 User Manual Gen II 10.1.5. – Label Detail Wt Holes Screen 10.1.5.1. If you selected to label the detail weights in the Setup in paragraph 10.1.1.8 above the next screen to appear will be the Label Detail Wt Holes screen. Use the [] key to move from hole number to hole number.
Page 213 User Manual Gen II 10.1.6.2. Use the [] to select the “Tach Chan” (tachometer channel) you will use for this job. Be sure the channel you select here is the channel you actually connect the tachometer-input signal to when setting up the equipment. Press the [] key to move to the next field.
Page 214 User Manual Gen II 10.1.6.10. Use the [] key to select the “Ch” (Channel A, B, C, or D) where you will connect the sensor input from the vibration sensor in this same row. Use the [] key to move to the next field. 10.1.6.11.
Page 215: Job Identification Screen
User Manual Gen II 10.1.7.2. The “All Planes Use the Same ICF:” field is only available if multiple balance planes were defined in paragraph 10.1.1.4 or 10.1.1.5 above. Use the [] to toggle the YES / NO answer field to indicate if all balance planes should use the same influence coefficient.
Page 216: Engine Information Screen
User Manual Gen II 10.1.9. – Engine Information Screen 10.1.9.1. The Engine Information screen will be displayed where you may enter the optional information of Position, Engine S/N, Type, TSO, TSN, and Cyc. Complete each field as necessary using the analyzer keypad. If Serial Numbers or Engine Types have previously been entered in this analyzer, you may optionally press the [F3] “Eng S/N”...
Page 217 User Manual Gen II 10.1.10. – Fan/Turbine Balance Equipment Setup 10.1.10.1. The “Fan/Turbine Balance Equipment Setup” banner screen, shown below, will be displayed. Install the speed sensor, vibration sensor, and cables as indicated. Near the center of the screen, the information message “Tach power is off” will be displayed.
Page 218 User Manual Gen II procedures and allow the engine to warm up to normal operating temperatures. When warm up is complete, allow the engine to stabilize at speed, make any minor adjustments as necessary, and then press [OK] to continue. Use the [F3] “+/- Pol.”...
Page 219 User Manual Gen II 10.1.11.3. A data acquisition screen similar to the one shown below will be displayed. If you are unfamiliar with reading this screen, see Chapter 24 of this manual, “Reading Spectrum and Scales”. Allow the analyzer to average the acquired data until the indications are stable.
Page 220 User Manual Gen II stabilize the reading. This option may be necessary when some of the Tooth settings (Mod Tth or Adj Tth) are selected on some engines. NOTE While collecting data, if the amplitude is high, the Error number will decrease toward 0.00 very rapidly.
Page 221 User Manual Gen II 10.1.13. – Shut Down Engines 10.1.13.1. The screen will display the message “Shut Down engine per flight manual instructions”. Press the [F5] “Continue” key to acknowledge the message and shut down the engine(s). 10.1.14. – Fan/Turb Suggested/Installed Wts 10.1.14.1.
Page 222 User Manual Gen II “Remove Old Wts, Inst. New Wts” is shown. All previously installed weights must be removed EACH TIME a new solution is installed. This means that weights installed on the previous run of a balance job must be removed completely before a new solution is installed.
Page 223 User Manual Gen II 10.1.14.2. The function keys operate as described below:  [F1] “Inst=None” key – This will return all “Installed” values to the null or “0” weight. Once pressed, the [F1] menu will change to “Inst=Sugg”. This will return all “Installed” values to the values listed under the center “Suggest”...
Page 224 User Manual Gen II  [F4] “Sel Pla/Wt” – Appears if optional balance planes or multiple class weight sets are configured in the setup. The “Select Plane / Class Wt Set” screen and allows you to select an optional balance plane and/or weight set. ...
Page 225 User Manual Gen II 10.1.15. – Start Aircraft 10.1.15.1. The screen will again display the Start Aircraft banner screen and indicate a new Run number. From this point, repeat steps 10.1.11 to 10.1.14 above until the vibration amplitude is reduced to an acceptable level or below the target amplitude entered in the setup.
Page 226: Resume Job
User Manual Gen II 10.1.15.3. If certain criteria were not met indicating a good job, you will see the message below telling you why the ICF could not be updated. 10.2. – Resume Job The features in this section are common among all jobs. Because of this, they are contained in Chapter 3, “Using the Gen II Analyzer”.
Page 227: Manage Setups
Lucas 1/14/2016 2.00: Major rewrite generalizing the manual to cover both the Viper II and Cobra II. This chapter only applies to East the Viper II and the generalization has minimal impact. This chapter was updated with corrections to minor typographical errors.
Page 228: Start Job
(Revision 3.00, Apr 2020) The Fan Blade Mapper is an accessory program that is only available in the Viper II analyzer. It allows you to remove as little as a single blade from a fan disk then enter the weight moment information for the new blade and all other blades currently installed on the disk.
Page 229 User Manual Gen II 11.1.2. – Select Setup List 11.1.2.1. If no setups were previously entered, the analyzer will open a new setup screen as shown in paragraph 11.1.2.2 below. If a setup has previously been entered for the engine model you are currently working, you may select it from the “Select, Setup List”...
Page 230 User Manual Gen II 11.1.2.3. In the Name: field, use the analyzer keypad to enter a name for this setup. The engine model is usually a good choice for this name. 11.1.2.4. In the Number of Blades: field, use the analyzer keypad to enter the total number of blades on the disk.
Page 231: Job Identification Screen
User Manual Gen II paragraph 11.1.5.1 below. Selecting “No” will not present the Serial Number fields. 11.1.2.9. The Define Max Weight Difference for Opposite Blades: field will become visible when an even value is entered in the Number of Blades: field (paragraph 11.1.2.4 above).
Page 232 User Manual Gen II 11.1.4. – Engine Identification 11.1.4.1. The “Engine Information” screen, shown below will be displayed. Use the [] key to select the Position for the engine (1, 2, 3, or 4). Enter the optional Engine Serial Number (S/N), Type, Time Since Overhaul (TSO) and Time Since New (TSN) as required.
Page 233 User Manual Gen II 11.1.6. – Optimizing Solution 11.1.6.1. A momentary screen reading “Optimizing Mapping” will be displayed along with a progression bar. The “Fan Blade Mapper Result” screen, shown below, will be displayed showing the optimal blade placement for each blade in the set to achieve the best weight distribution and balance.
Page 234: Manage Jobs
User Manual Gen II 11.1.6.2. Once the blade placement is complete, a vibration survey should be completed to ensure the balance is acceptable. If the balance is not acceptable, perform a Transient Balance in accordance with Chapter 9 or a Fan/Turbine Balance in accordance with Chapter 10.
Page 235: Manage Setups
1.02: Updated to reflect “Define Max Weight Difference Between Opposing Blades” feature East 1/14/2016 2.00: Major rewrite generalizing the manual to cover both the Viper II and Cobra II. This chapter only applies to East the Viper II and the generalization has minimal impact.
Page 236: Honeywell Performance (Viper Ii Only) (Rev 2.20, Apr 2020)
N1 DEEC computer without the need of the JEDA module. The Honeywell Performance function is available as part of the Viper II Main Menu and is used with or without the model 1752B JEDA dependent on the engine computer model. If you are not sure what performance equipment and accessories you currently have or need, contact ACES Systems at (865) 671-2003 or via email at Support@acessystems.com.
Page 237 S Y S T E M S VIPER II Analyzer Boot V ers ion App Versi on GH I J KL M NO PQ R • Viper II Analyzer & EMS N1 DEEC Direct Connect Equipment Setup 12-2 – Honeywell Performance Chapter 12 Revision 2.20,...
Page 238 S Y S T E M S VIPER II Analyzer Boot Version App Version **SN 88 and higher only *SN 87 and lower only • 1752B JEDA with Viper II Analyzer Equipment Setup 12-3 – Honeywell Performance Chapter 12 Revision 2.20,...
Page 239 The appropriate cable then connects the sensor to the JEDA unit or directly to the AUX/COMM input on the Viper II when used with N1 DEEC Direct Connect applications.
Page 240: Analyzer Operation
BEFORE powering on the equipment. Once the cables are connected, power on the JEDA. You will hear a series of clicks followed by a short pause and then a single click. Finally, power on the Viper II analyzer. 12.1.2.
Page 241 GREEN light to indicate a temperature is being sent to the Viper II or a solid YELLOW light to indicate that no temperature probe is connected or detected. The Viper II DEEC direct interface cable...
Page 242 AVAILABLE from the list, confirm that the cables are connected correctly and are the correct ones for your airframe, and recycle power to the DEEC computer. If you continue to be unable to find the correct engine model, contact ACES Systems by 12-7 – Honeywell Performance Chapter 12 Revision 2.20,...
Page 243 User Manual Gen II following the instructions in the Preface to this manual. When you are ready to continue, press [OK] to accept your selection. 12.1.2.8. The Nozzle Select screen will be displayed. If conducting the run on EEC, N2 DEEC or -60/-62 N1 DEEC computers, use the [] key to scroll through the list of available Nozzles that may be installed on the engine model and aircraft selected in paragraphs 12.1.2.6 and 12.1.2.7 above.
Page 244 N1 speed drift from a stable speed, before the data logger or Viper II will detect and store an invalid sample. The default is 100. If wind conditions dictate, this value may be set as high as 300 RPM, however;...
Page 245 User Manual Gen II key to move to the next field. (Not Pictured and may not be available selections) Fuel LHV(BTU/lbm): If you are using a fuel flow meter, use the analyzer keypad to enter the Fuel Lower Heating Value. If you are not using a fuel flow meter, this entry is not required.
Page 246 User Manual Gen II 12.1.2.12. If the engine is N1 DEEC equipped, the WARNING message below will be displayed. The message indicates that the computer is not in the certified, factory default mode. If power to the analyzer is lost for any reason, the N1 DEEC control will not automatically return to its default, certified mode.
Page 247 The message is to inform you that all power adjustment will be made automatically by the Viper II Analyzer. While you do not need to adjust power for the calibration run, you still have the ability to reduce the engine power using the PLA if necessary, such as in an emergency or because of airfield traffic.
Page 248 User Manual Gen II 12.1.2.16. When the analyzer switches to the Acquisition mode, the header at the top of the screen will indicate “Acquisition” and the data quality indications, ACCEPTABLE, QUESTIONABLE and UNRELIABLE will be shown to the right of the P/Set indication.
Page 249: Information Screens
User Manual Gen II 12.1.2.18. The Cockpit Readings screen, as shown in the example below, will be displayed. The numeric fields immediately to the right of “Cockpit N1, N2 and ITT” will have a default value of “30”, “30”, and “100” respectively. Use the analyzer keypad to enter the values as indicated by the cockpit instruments.
Page 250 User Manual Gen II answers “Yes” or “No” that may be selected by pressing either the [F1] or [F5] key, respectively. 12.1.3.2. The Information screen below, “Reduce PLA slowly until the engine slows below N2 = XX.X%” indicates that you have either selected the [F1] “Yes” answer from the screen above, or you have completed data acquisition and are terminating the job.
Page 251 12.1.3.5. An information screen similar to the one shown below will be displayed each time the Viper II Analyzer is adjusting power for the next point. You should not attempt to press any keys during this process. You should also not move the PLA or activate or deactivate any aircraft systems that would change the power setting of the engine.
Page 252 User Manual Gen II 12.1.3.6. The information screen below will be displayed following the collection of data from the fifth point of a calibration run. A minimum of five points are required, however, the analyzer will allow you to acquire an additional seven points if you so desire. If you answer “YES”...
Page 253: Manage Jobs
User Manual Gen II 12.2. – Manage EMS Jobs Selecting “Manage EMS Jobs” from the “Honeywell Performance” banner screen menu presents several sub-menu choices as shown below. These choices allow you to “manage” previously completed job data you have stored in the analyzer. 12.2.1.
Page 254: Create Report
User Manual Gen II 12.2.2. – Create Report Selecting the “Create Report” option presents a list of stored jobs on the “Create Job Report” banner screen. From this list you may create a report in PDF format. Once you select a job and press [OK], a progress indicator will be displayed followed by the message “Report created”.
Page 255: Export Logger Settings
For example, in the screen below, the “OAT: Connected” indicates that an Outside Air Temp cable and RTD sensor are connected to the Viper II analyzer and operating normally. Likewise, the “Pamb: Not Connected” line directly below the OAT: line indicates that no Ambient Pressure Sensor is detected which means it is either NOT connected or that a fault exists in either the sensor or the connecting cable.
Page 256: Edit Job Parameters
User Manual Gen II 12.7 – Edit Job Parameters The Edit Job Parameters allow customization of how the software will respond to collected data or user input. The “On PLA Move” option defines how the software should respond if it detects that the PLA has been moved.
Page 257: Monitor N1 Deec Parameters
User Manual Gen II 12.9 - Monitor N1 DEEC Parameters The Monitor N1 DEEC Parameters option allows the display of the state and data collected by the N1 DEEC. This option is generally used as a troubleshooting tool when the scan data is questionable or not being acquired.
Page 258: Monitor Aux Oat
The Monitor Aux OAT option allows the display of data measured from the OAT sensor attached to the Aux/Com port on the Viper II analyzer. While in “Monitor” mode, the OAT data and measuring software version will be updated approximately once (1) times per second.
Page 259 Chapter reference link in footer. 1/15/2016 2.00: Major rewrite generalizing the manual to cover both the Viper II and Cobra II. This East chapter only applies to the Viper II and the generalization has minimal impact. A note was added prior to para.
Page 260: Transient Vibration Survey (Viper Ii Only) (Rev 4.10, Apr 2020)
(Viper II only) (Revision 4.10, Apr 2020) “Transient Vibration Survey” is a function that is only available in the Viper II analyzer. It is accessed from the analyzer’s Main Menu banner screen as shown in the illustration below. Selecting this function from the main menu brings up the “Transient Vibration Survey Jobs”...
Page 261: Start Job
User Manual Gen II 13.1. – Start Job Selecting “Start Job” from the “Transient Vibration Survey Jobs” banner screen allows you to begin a transient vibration survey. When you select this option, one of two screens will appear next depending on whether you are starting a job from scratch or whether an incomplete job still exists in the analyzer’s memory.
Page 262 User Manual Gen II “Select Setup List”. If you are starting a new job with previously defined setups available in the analyzer’s memory, the screen will automatically display the “Select Setup List” banner screen similar to the one shown below. The actual setup names will be those which you have entered into your analyzer.
Page 263 User Manual Gen II appear automatically. You can use this information if appropriate or input your own specific setup information using the keypad. (Refer to Chapter 3, “Using the Gen II Analyzer” if you are unfamiliar with using the keypad.) The analyzer will display the “Transient Survey Setup” banner with default values or values entered from the previous job such as those shown in the figure below.
Page 264 User Manual Gen II 13.1.1.1.4. Use the [] key to move to the maximum frequency field, immediately to the right of the word “to” and the minimum frequency field. Use the analyzer keypad to enter the highest frequency of interest for this survey relative to the frequency units selected in paragraph 13.1.1.1.2 above.
Page 265 User Manual Gen II acceleration or deceleration of the engine (or component being checked) you may wish to set the rate at longer intervals, 200 or 500 for instance. 13.1.1.1.9. Use the [] key to move to the “Define related tachs?” field. This field will allow you to define correlations between vibration channels and tach signals.
Page 266 User Manual Gen II vibration sensor connected to this channel. For example, if you are using a vibration sensor configured in mV/g (see section 22.1 “Manage Sensors” for more information on configuring sensors), the broadband vibration units will be displayed in g’s. Second, the frequency range measured in the broadband survey will always be 140 Hz through 30 kHz.
Page 267 User Manual Gen II 13.1.1.3. – Conditions The “Conds” (conditions) key, which corresponds to the [F1] key, will display the Conditions screen as shown in the example below. 13-8 – Transient Vibration Survey Chapter 13 Revision 4.10, Apr 20...
Page 268 User Manual Gen II To input conditions, do the following: 13.1.1.3.1. In the “Condition” column, use the analyzer keypad to enter a descriptive name for up to fifteen conditions. You may define up to 15 individual points at which you collect and optionally store data.
Page 269 NONE is selected when the corresponding tach channel is not being used. Only pulsed inputs such as a Phototach, Lasetach or magnetic pickup may be used with the Viper II Analyzer. This pulse input may be, but is not necessarily a once-per-rev pulse. The preference is actually a multi-pulse per revolution input.
Page 270 User Manual Gen II pulse frequency (Hz) of the tach source at 100%. The component speed (RPM) at 100% is then divided by the tach pulse frequency to obtain the factor. In the example above, the “N2” speed at 100% is 10,000 RPM and the tach pulse frequency is 4000 Hz. This will give us a factor of “2.5”.
Page 271 User Manual Gen II To input information into the Transient Vibration Parameters screen, do the following. 13.1.1.5.1. In the “Description” column, use the keypad to input a description of the individual component you will track with a speed input. The description should be one that is familiar and easily understood to all users of this setup.
Page 272 User Manual Gen II 13.1.1.5.6. When fields are completed for all Parameters, press [OK] to return to the Transient Survey Setup screen. Broadband (BBnd) 13.1.1.6. – Pressing the [F2] “Bbnd” key will take you to the “Broadband Input Configuration” screen. This screen is used to define the Full-Scale Range of the Broadband measurement.
Page 273 User Manual Gen II 13.1.1.7.1. The “Parameters” column is a display of the available parameters for plotting. These are based on your configurations made in the “Speeds Input Setup” screen in paragraph 13.1.1.4, the “Define related tachs?” in paragraph 13.1.1.1.9, and the “Broadband (Bbnd)”...
Page 274 User Manual Gen II 13.1.1.9. – L:Parms The “L:Parms”, or Limit :Parameters, (which corresponds to the [F1] key) selection appears at the bottom left of the Transient Survey Setup screen after selection [F5] “Limits” from the main Transient Survey Setup screen. Press the [F1] key if you wish to define Parameter Limits for the transient survey plots.
Page 275 User Manual Gen II 13.1.1.10. – L:Spec The “L:Spec”, or Limit: Spectra, (which corresponds to the [F2] key) selection appears at the bottom, second from the left of the Transient Survey Setup screen after selection of [F5] “Limits” from the main Transient Survey Setup screen. Press the [F2] key if you wish to define Spectra Limits for the transient survey plots.
Page 276: Job Identification
User Manual Gen II 13.1.1.10.2. Use the [] and [] keys to navigate the screen and input or select units using the keypad or the [] and [] keys respectively. 13.1.1.10.3. The “Edit Limits for Channel X” banner screen, where X represents the input channel letter A, B, C, or D, shown above, will be displayed.
Page 277: Engine Information
User Manual Gen II 13.1.3. – Engine Information The “Engine Information” banner screen is displayed as shown below. Serial number (“S/N”) and “Type” fields are available for both an engine and a propeller so that stored surveys can be traced by either component of the powertrain system. All fields are optional but we highly recommend you fill in as much information as possible for ease of use in trending, recall, and storage.
Page 278: Equipment Setup
User Manual Gen II 13.1.4. – Equipment Setup The Transient Balance Equipment Setup banner screen, shown below, will be displayed. Install the speed sensor, vibration sensor, and cables as indicated. Near the center of the screen, the information message “Tach power is on” will be displayed. This indicates that power to the optical tachometer is currently available to check alignment with the reflective target.
Page 279: Microphone Calibration
User Manual Gen II The option to turn tach power on/off using the [F1] function key is for tachometer alignment and will only appear when Pulse S is selected in paragraph 13.1.1.3.1 above. It will not affect the tachometer’s operational condition. Regardless of selection, once this screen is exited power WILL be supplied to an Optical Tachometer.
Page 280 User Manual Gen II 13.1.5.2.1. Enter the “Ref. Level:”, Reference Level, typically in decibels (dB), and the “Ref. Frequency:”, Reference Frequency, in Hertz (Hz), as found on the calibrator. Plug the microphone into the correct size adapter in the top of the calibrator. Turn the calibrator on and press [OK] on the analyzer.
Page 281: Start Engine
User Manual Gen II paragraph 13.1.5.1. The checkbox next to the applicable channel will contain an “x” indicating the calibration has been accomplished. 13.1.5.3.2. Press [F5] “Start Engine” to continue. If calibration has not been completed, a warning message will appear giving you the option to calibrate the microphone or continue with the job.
Page 282: Collecting Data With "Overall" Or "Overall W/Record
User Manual Gen II 13.1.8. – Collecting Data with “Overall” or “Overall w/Record” If the display type was selected as “Overall” or “Overall w/Record” in paragraph 13.1.1.1.7 above, the overall values are displayed as shown below. The “w/Record” option will display a blinking “Record”...
Page 283 User Manual Gen II B, Overall, Event) for viewing the measurements. The “F” key functions for viewing overall measurements are described in the following steps. 13.1.8.1. – Fields displayed when viewing Overall 13.1.8.1.1. “Events:” – Displays the number of events triggered when the user presses the [F5] “Event”...
Page 284: Collecting Data With "Spectra" Or "Spectra W/Record
User Manual Gen II 13.1.8.2.2. Pressing the [F4] “Spectra” key will display the spectra plot as shown in paragraph 13.1.9 below. 13.1.8.2.3. [F5] “Record” or Event” – If “w/Record” option is selected in paragraph 13.1.1.1.7, the [F5] menu option will display a blinking “Record” key. Pressing it will begin data acquisition and the function key menu will change to “Event”.
Page 285 User Manual Gen II 13.1.9.1. – Fields displayed when viewing Spectra 13.1.9.1.1. Modifier – Displayed in the upper left above the “Y” scale. This will display the modifier for the affected channel entered in paragraph 13.1.1.1.11. 13.1.9.1.2. Channel description (Desc) – Centered at the top of the spectrum and is the description for the affected channel entered in paragraph 13.1.1.1.17.
Page 286 User Manual Gen II 13.1.9.2. – Function Key Options when viewing Spectra 13.1.9.2.1. Pressing the [F1] “Options” key will change the [F1], [F2], [F3], [F4] and [F5] boxes to read “Cursor”, “X Scale”, and “Y Scale”, “View” and “Cancel” respectively as shown in the figure below.
Page 287 User Manual Gen II 13.1.8.12.1 and press the [F1] “Normal” or [F3] “None” key and the multiple cursors will be replaced by your selection.  Pressing the [F3] “None” key will remove either a normal or harmonic cursor if currently displayed on screen. The three boxes above the [F1], [F4] and [F5] keys will return to “Options,”...
Page 288 User Manual Gen II prior to pressing the [F1] key. If the view is already at the maximum range of the specified scale range, no scaling change will occur. However, the cursor will be displayed and the X, Y, and “Ovr” (Overall) values will be shown in the upper right corner of the screen.
Page 289: Storing Data
User Manual Gen II 13.1.10. – Storing Data Anytime the spectrum is displayed on screen you may press [OK] to terminate data acquisition. The analyzer then displays the screen shown below. If a single condition was configured in paragraph 13.1.1.3, the “Shut Down Engines” screen shown on the following page will be displayed.
Page 290: Resume Job
User Manual Gen II At this point you may select a new condition and repeat procedures starting from paragraph 13.1.7 until all required data are collected. If you would like to exit the job with the ability to resume it later, you can press the [F1] “Pause Job” key. This will cause the following screen to be displayed.
Page 291: Manage Jobs
User Manual Gen II 13.3. – Manage Jobs The features in this section are common among all jobs. Because of this, they are contained in Chapter 3, “Using the Gen II Analyzer”. 13.4. Exporting Time Trace Information For Transient Vibration Surveys, export the PWC Time Trace information of the job(s) as necessary by selecting “Transient Vibration Survey”...
Page 292 User Manual Gen II Use the [] and [] keys to select the name of the job and press [OK]. Select the IDAC Class based on where the data is to be transferred. Enter the initials of the Technician who performed the survey into the Technician field. Update the starting run number if the job is a second run on the same engine.
Page 293: Custom Reports
User Manual Gen II 13.5. – Custom Reports This feature allows the customization of job reports to allow the user the ability to tailor the report to display only what is relevant. The feature is only for transient vibration surveys. To generate a custom report, select “Manage Jobs”...
Page 294 User Manual Gen II Select the desired information to be displayed in the custom report. Press [F1] “Conds” key to select the conditions desired to be in the custom report. Press [F3] “All” key to include all elements of collected data in the report. To clear all elements of the report, press [F4] “Clear”.
Page 295: Manage Setups
Broadband feature instructions. Lucas 1/18/2016 2.00: Major rewrite generalizing the manual to cover both the Viper II and Cobra II. East This chapter only applies to the Viper II and the generalization has minimal impact. This chapter was updated with corrections to minor typographical errors.
Page 296: Vibration Spectrum Survey (Rev 4.10, Apr 2017)
Survey” function. Descriptions of each of these options follow, along with the information required to complete the menu screens within the options, and the steps necessary to perform the vibration spectrum surveys function. Viper II Cobra II The Vibration Spectrum Survey option allows the user to rapidly complete and store vibration surveys using the “Vibration Spectrum Setup”...
Page 297 User Manual Gen II “Incomplete Job” If another job was in progress but was not completed, the “Incomplete Job” banner screen will be displayed to inform you of this. The displayed message will give you the details of the last incomplete job and provide the opportunity to resume it. Pressing the [F1] “Yes”...
Page 298: Vibration Spectrum Setup
“Vibration Spectrum Setup” banner screen shown below. 14.1.1. – Vibration Spectrum Setup Viper II Cobra II The “Vibration Spectrum Setup” banner screen allows you to define and store a vibration spectrum survey setup.
Page 299 User Manual Gen II Viper II Cobra II 14.1.1.1. – Vibration Spectrum Setup Screen 14.1.1.1.1. In the “Name” field, enter a name for this setup using the keypad. The name you choose will aid you in differentiating this setup from other stored setups should you choose to use or review it at a later time.
Page 300 NOTE Sensor Channels C & D are only available on the Viper II 14.1.1.1.9. Use the [] key to move to the “Units” column of the “Channel A:” row. Select an engineering unit from the available list by using [] key.
Page 301 User Manual Gen II automatically provide additional selection fields in the “Mod”, “MaxValue”, “Sensor” and “Desc” columns. 14.1.1.1.10. Use the [] key to move to the “Mod” field. The “Mod” field determines the modifier that will be applied to the engineering units of the spectra. Consult your equipment maintenance manual for specific requirements of a vibration survey or for analysis guidelines.
Page 302 “Spectra Setup” screen. 14.1.1.3. – Speeds (Viper II only) Press the [F2] “Speeds” key from the Vibration Spectrum Setup screen shown above in paragraph 14.1.1. The Speeds option allows you to measure several types of speed inputs for synchronizing with the vibration input or to provide an entry field for reference where no actual speed input is available.
Page 303 User Manual Gen II To define Speed inputs, do the following: 14.1.1.3.1. In the “Measure” column, use the [] or [] key to select from “Pulse S”, “Pulse D” or “None” indicating the tachometer input type for the tachometer input channel indicated. NONE is selected when the corresponding tach channel is not being used.
Page 304 Viper II Cobra II NOTE Sensor Channels C & D are only available on the Viper II 14.1.1.4.1. Choose the spectrum for which you wish to define limits, “A-Limits”, “B-Limits”, “C- Limits”, or “D-Limits” from the corresponding function key at the bottom of the screen.
Page 305 Use the keypad to enter the lowest frequency of interest, “F-low”. If “Unit” is set to “RPM” or “Hz”, this value will define the lowest frequency in a fixed range. The Viper II provides the additional selections of xCS1 through xCS4. If “Unit” is set to one of these, this value is multiplied by that component speed (configured in paragraph 14.1.1.3...
Page 306: Job Identification
User Manual Gen II field. When all desired limits are set, press [OK] to accept your settings and exit the screen. 14.1.1.4.8. If multiple sensor channels use the same settings, you can copy the settings to another channel using the [F1] through [F5] function keys. 14.1.1.4.9.
Page 307: Engine Information
User Manual Gen II 14.1.3. – Engine Information The “Engine Information” banner screen is displayed as shown below. Serial number (“S/N”) and “Type” fields are available for both an engine and a propeller so that stored surveys can be traced by either component of the powertrain system. All fields are optional but we highly recommend you fill in as much information as possible for ease of use in trending, recall, and storage.
Page 308: Equipment Setup
The “Equipment Setup” banner screen, shown below, will be displayed prompting to install the appropriate sensors and cables. If the Viper II’s “Speeds” screen in paragraph 14.1.1.3 above was configured for use of an optical tachometer, the information message “Tach power is On” will be displayed near the center of the screen.
Page 309: Microphone Calibration (Viper Ii Only)
The option to turn tach power on/off using the [F1] function key is for tachometer alignment and will only appear in a Viper II and when Pulse S is selected in paragraph 14.1.1.3.1 above. It will not affect the tachometer’s operational condition. Regardless of selection, once this screen is exited power WILL be supplied to an Optical Tachometer.
Page 310 User Manual Gen II 14.1.5.2.1. Enter the Reference Level, typically in decibels (dB), and the Reference Frequency, in Hertz (Hz), as found on the calibrator. Plug the microphone into the correct size adapter in the top of the calibrator. Turn the calibrator on and press [OK] on the analyzer. 14.1.5.2.2.
Page 311: Start Engine
The [F4] menu item “Calib” and the message “Press F4 to change the microphone Calibration” will only appear in a Viper II and if a microphone has been selected as a sensor in the setup. This function is not available in the Cobra II.
Page 312: Collecting Data
(top and bottom) in both the Cobra II and Viper II or into quadrants for three or four sensors in the Viper II. The analyzer will begin data acquisition as soon as the screen is displayed.
Page 313 User Manual Gen II 14.1.8.1.1. Modifier – Displayed in the upper left above the “Y” scale. This will display the modifier for the affected channel entered in paragraph 14.1.1.1.10. 14.1.8.1.2. Channel description (Desc) – Centered at the top of the spectrum and is the description for the affected channel entered in paragraph 14.1.1.1.14.
Page 314 User Manual Gen II  Pressing the [F1] “Cursor” key will change the [F1], [F2], [F3], and [F5] boxes to read “Normal,” “Harmonic,” “None,” and “Cancel” respectively. The functions of the “F” keys will continue to change as the screens change. ...
Page 315 User Manual Gen II  Pressing the [F2] “X scale” or [F3] “Y scale” keys will change the [F1], [F2], [F3] and [F5] boxes to read “Expand,” “Default,” “Shrink,” and “Cancel” respectively as shown in the following figure.  Pressing the [F1] “Expand” key will expand the X or Y scale of the spectra, in effect enlarging the viewing area.
Page 316 14.1.8.3.2. “Channel” – Displays the descriptions entered in paragraph 14.1.1.1.14 for each vibration sensor and paragraph 14.1.1.3.2 above for each Viper II tach channel. 14.1.8.3.3. “Current” – Displays the current values for each channel configured.
Page 317 “Units” – Displays the unit of measure selected in paragraph 14.1.1.1.9 for each sensor channel configured. 14.1.8.3.6. “% Speed” (Viper II only) – Displays the speed in percent for each tach configured ONLY if a 100% speed value was in entered in paragraph 14.1.1.3.3 above. Otherwise, these fields will be blank.
Page 318: Storing Data
User Manual Gen II 14.1.9. – Storing Data Anytime during the job, you may press [OK] to terminate data acquisition. The analyzer then displays the screen shown below giving you the opportunity to store the collected data. Pressing [F1] “Yes” will store the collected data to the analyzer. Pressing [F5] “No” will delete the acquired data and it cannot be recovered.
Page 319: Resume Job
User Manual Gen II At this point you may select a new condition and repeat procedures starting from paragraph 14.1.7 until all required data are collected. If you would like to end the run with the ability to resume it at a later time, press [F1] “Pause Job”. If you would like to exit the job without the ability to resume it later, you can press the [F5] “Quit Job”...
Page 320: Manage Jobs
User Manual Gen II 14.3. – Manage Jobs The features in this section are common among all jobs. Because of this, they are contained in Chapter 3, “Using the Gen II Analyzer”. 14.4. – Manage Setups The features in this section are common among all jobs. Because of this, they are contained in Chapter 3, “Using the Gen II Analyzer”.
Page 321 User Manual Gen II Revision History 1/20/2016 2.00: Major rewrite generalizing the manual to cover both the Viper II and Cobra II. This chapter was updated East with screenshots and corrections to minor typographical errors. 8/15/2017 4.00: Updated with new behavior where the Select Condition screen is always presented, even if there is just Wilson one condition.
Page 322: Overall Vibration Survey (Rev 4.10, Apr 2020)
Viper II Cobra II The Overall Vibration Survey option allows the user to rapidly complete and store overall vibration surveys using the “Overall Vibration Setup”...
Page 323 User Manual Gen II “Incomplete Job” If another job was in progress but was not completed, the “Incomplete Job” banner screen will be displayed to inform you of this. The displayed message will give you the details of the last incomplete job and provide the opportunity to resume it. Pressing the [F1] “Yes”...
Page 324: Overall Vibration Setup
“Overall Vibration Setup” Screen. If you are starting a new job with no setups previously defined in the analyzer’s memory, the screen will automatically display the “Overall Vibration Setup” banner screen shown below. Viper II Cobra II 15.1.1. – Overall Vibration Setup The “Overall Vibration Setup”...
Page 325 User Manual Gen II Viper II Cobra II 15.1.1.1. – Overall Vibration Setup Screen 15.1.1.1.1. In the “Name” field, enter a name for this setup using the keypad. The name you choose will aid you in differentiating this setup from other stored setups should you choose to use or review it at a later time.
Page 326 User Manual Gen II NOTE Sensor Channels C & D are only available on the Viper II 15.1.1.1.5. Use the [] key to move to the “Units” column of the “Channel A:” row. Select an engineering unit from the available list by using [] key. A selection of “None” in the field indicates there will be no input to the Channel adjacent to the field where the word “None”...
Page 327 “Overall Vibration Setup” screen. 15.1.1.3. – Speeds (Viper II only) Press the [F2] “Speeds” key from the setup screen shown above in paragraph 15.1.1. The Speeds option allows you to measure several types of speed inputs for synchronizing with the vibration input or to provide an entry field for reference where no actual speed input is available.
Page 328 User Manual Gen II This allows you to view amplitude, in the selected engineering units, relative to the speed of the machine or component being monitored. If you choose this option to define speed inputs for the survey, the following “Speed Inputs Setup”...
Page 329: Job Identification
User Manual Gen II 15.1.1.3.4. The “FACTOR” column can be used to enter a multiplier for converting Hertz to actual component speed in RPM. If using a Pulse input, the RPM is equal to Hertz x Factor. The analyzer assumes the input to be relative to Hz (cycles per second) so that an input of one pulse per revolution (one-per-rev) would require a FACTOR of 60 (1 per-rev X 60 Hz assumed) to equal Revolutions Per Minute (RPM).
Page 330: Engine Information
User Manual Gen II 15.1.3. – Engine Information The “Engine Information” banner screen is displayed as shown below. A serial number (“S/N”) and “Type” field are available for both an engine and a propeller so that stored surveys can be traced by either component of the powertrain system.
Page 331: Equipment Setup
The “Equipment Setup” banner screen, shown below, will be displayed prompting to install the appropriate sensors and cables. If the Viper II’s “Speeds” screen in paragraph 15.1.1.3 was configured for use of an optical tachometer, the information message “Tach power is On” will be displayed near the center of the screen.
Page 332: Microphone Calibration (Viper Ii Only)
The option to turn tach power on using the [F1] function key is for tachometer alignment and will only appear in a Viper II and when Pulse S is selected in paragraph 15.1.1.3.1 above. It will not affect the tachometer’s operational condition. Regardless of selection, once this screen is exited power WILL be supplied to an Optical Tachometer.
Page 333 User Manual Gen II 15.1.5.2.1. Enter the Reference Level, typically in decibels (dB), and the Reference Frequency, in Hertz (Hz), as found on the calibrator. Plug the microphone into the correct size adapter in the top of the calibrator. Turn the calibrator on and press [OK] on the analyzer. 15.1.5.2.2.
Page 334: Start Engine
The [F4] menu item “Calib” and the message “Press F4 to change the microphone Calibration” will only appear in a Viper II and if a microphone has been selected as a sensor in the setup. This function is not available in the Cobra II.
Page 335: Collecting Data
The analyzer will begin data acquisition as soon as the screen is displayed. For a description of the fields and function keys, see paragraphs 15.1.8.1 and 15.1.8.1.3 below 1 – 4 sensors with tach in Viper II only 1 – 2 sensors in Viper II and Cobra II 15.1.8.1.
Page 336 “Units” – Displays the unit of measure selected in paragraph 15.1.1.1.5 for each sensor channel configured. 15.1.8.1.6. “% Speed” (Viper II only) – Displays the speed in percent for each tach configured ONLY if a 100% speed value was in entered in paragraph 15.1.1.3.3. Otherwise, these fields will be blank.
Page 337 If multiple sensors were configured, the display will be divided as shown below; in half for two sensors (top and bottom) in both the Cobra II and Viper II or into quadrants for three or four sensors in the Viper II.
Page 338 User Manual Gen II 15.1.8.4. – Function Key Options when viewing Spectra 15.1.8.4.1. Pressing the [F1] “Options” key will change the [F1], [F2], [F3], [F4] and [F5] boxes to read “Cursor”, “X Scale”, and “Y Scale”, “View” and “Cancel” respectively as shown in the figure below.
Page 339 User Manual Gen II “Overall,” and “Restart” respectively. If no cursor is displayed when pressing this key, only the box nomenclature will change.  Pressing the [F2] “X scale” or [F3] “Y scale” keys will change the [F1], [F2], [F3], and [F5] boxes to read “Expand,”...
Page 340: Storing Data
User Manual Gen II “Restart” respectively. If you wish to Expand the X scale even further, retrace the steps from that point as described in the text.  Pressing the [F2] “Default” key will return the X or Y scale to the values specified in the setup.
Page 341 User Manual Gen II [F1] “Yes” will store the collected data to the analyzer. Pressing [F5] “No” will delete the acquired data and it cannot be recovered. If all conditions have been collected, the “Shut Down Engines” screen shown on the following page will be displayed.
Page 342: Resume Job
User Manual Gen II At this point you may select a new condition and repeat procedures starting from paragraph 15.1.7 until all required data are collected. If you would like to end the run with the ability to resume it at a later time, press [F1] “Pause Job”. If you would like to exit the job without the ability to resume it later, you can press the [F5] “Quit Job”...
Page 343: Manage Jobs
User Manual Gen II 15.3. – Manage Jobs The features in this section are common among all jobs. Because of this, they are contained in Chapter 3, “Using the Gen II Analyzer”. 15.4. Exporting Time Trace Reports For Vibration Surveys, export the PWC Time Trace information of the job(s) as necessary by selecting “Overall Vibration Survey”...
Page 344 User Manual Gen II Use the [] and [] keys to select the name of the job and press [OK]. Select the IDAC Class based on where the data is to be transferred. Enter the initials of the Technician who performed the survey into the Technician field. Update the starting run number if the job is a second run on the same engine.
Page 345: Manage Setups
1.01: Repaired broken reference links and added revision history table. Berlin 1/20/2016 2.00: Major rewrite generalizing the manual to cover both the Viper II and Cobra II. This chapter East was updated with screenshots and corrections to minor typographical errors.
Page 346: Monitor Spectrum (Rev 2.10, Apr 2020)
“Monitor Spectrum” is an analyzer function that is accessed from the analyzer’s Main Menu banner screen. A description of this function follows, along with the information required to complete the menu screens within the function, and the steps necessary to perform the function. Viper II Cobra II 16.1. – Monitor Spectrum The “Monitor Spectrum”...
Page 347 User Manual Gen II Viper II Cobra II 16.1.1.2. Determine if the required frequency units are revolutions per minute (RPM) or cycles per second (Hz). Press the [] key to toggle between the frequency unit selections in the field. 16.1.1.3.
Page 348 The default value of 4 is sufficient for most applications. NOTE Sensor Channels C & D are only available on the Viper II 16.1.1.9. Use the [] key to move to the “Units” column of the Channel A row. This field determines the engineering units in which the amplitude, or “Y”...
Page 349: Speeds (Viper Ii Only)
16.1.1.15. Repeat paragraphs 16.1.1.13 through 16.1.1.14 for each of the channels you intend to use for this job. 16.1.2. – Speeds (Viper II only) 16.1.1.16. Press the [F2] “Speeds” key from the Spectra Setup screen shown above in paragraph 16.1.1.1. The Speeds option allows you to measure several types of speed inputs for synchronizing with the vibration input or to provide an entry field for reference where no actual speed input is available.
Page 350 Only pulsed inputs such as a PhotoTach, Lasetach or magnetic pickup may be used with the Viper II Analyzer. This pulse input may be, but is not necessarily a once-per-rev pulse. The preference is actually a multi-pulse per revolution input.
Page 351 User Manual Gen II give you a factor of “2.5”. If the tach pulse frequency is unknown, set the FACTOR to “1” and read the value for the applicable tach channel at a known stable engine speed. The indicated tach pulse frequency can then be divided into the known engine speed at that point.
Page 352 User Manual Gen II 16.1.3.2.1. Pressing the [F1] “Options” key will change the [F1], [F2], [F3], [F4] and [F5] boxes to read “Cursor”, “X Scale”, and “Y Scale”, “View” and “Cancel” respectively as shown in the figure below.  Pressing the [F1] “Cursor” key will change the [F1], [F2], [F3] and [F5] boxes to read “Normal,”...
Page 353 User Manual Gen II  Pressing the [F3] “None” key will remove any cursor currently displayed on screen. The three boxes above the [F1], [F2], [F4] and [F5] keys will return to “Options,” “Resume,” “Overall” and “Restart” respectively. If no cursor is displayed when pressing this key, only the box nomenclature will change.
Page 354 16.1.3.3.2. “Channel” – Displays the descriptions entered in paragraphs 16.1.1.14 for each vibration sensor and 16.1.1.18 for each Viper II tach channel. 16-9 – Monitor Spectrum Chapter 16...
Page 355 “Units” – Displays the unit of measure selected in paragraph 16.1.1.9 above for each sensor channel configured. 16.1.3.3.6. “% Speed” (Viper II only) – Displays the speed in percent for each tach configured ONLY if a 100% speed value was in entered in paragraph 16.1.1.19 above. Otherwise, these fields will be blank.
Page 356 User Manual Gen II Revision History 1/20/2016 2.00: Major rewrite generalizing the manual to cover both the Viper II and Cobra II. This chapter was updated East with screenshots and corrections to minor typographical errors. 4/1/2020 2.1: Update for UI changes in Software Pack 7. Addition of Tach Filter Info, screenshots and minor Shively typographical errors.
Page 357: Monitor
Measurements acquired with this function will not be accurate for use in these applications. To balance these applications, use the “Tail Rotor Balance” selection from the Main Menu. Viper II Cobra II To use the “Monitor Magnitude and Clock” function, do the following:...
Page 358  From the Main Menu banner screen, select “Monitor Magnitude and Clock.” The “Monitor Magnitude and Clock” banner screen appears as shown in the figure below. Viper II Cobra II  Use the [] key to toggle between the selections in the “Tach Channel” field. Toggle between selections using the [] keys to select the tachometer-input channel to be...
Page 359 CAUTION Sensors connected to Channel A and Channel B (or Channel C and Channel D in the Viper II) must be of the same type. Using different sensors during this function will cause erroneous readings ...
Page 360 1.01: Updated broken chapter reference links in footer and added Revision History table. Berlin 1/21/2016 2.00: Major rewrite generalizing the manual to cover both the Viper II and Cobra II. This chapter was updated with East screenshots and corrections to minor typographical errors.
Page 361: Monitor Magnitude And Phase (Rev 2.01, Apr 2020)
The “Monitor Magnitude and Phase” function provides for rapid acquisition of a phase angle and amplitude reading without defining and saving a setup. This function allows for no storage of readings for future review. Viper II Cobra II To use the “Monitor Magnitude and Phase” function, do the following: ...
Page 362 The filter will then be effective for that frequency and all frequencies above that value. NOTE This feature is only available in the Viper II Analyzer. 18-2 – Monitor Magnitude and Phase Chapter 18...
Page 363  When finished acquiring vibration data, press the [OK] key to stop. Revision History: 1/21/2016 2.00: Major rewrite generalizing the manual to cover both the Viper II and Cobra II. This chapter was updated with East screenshots and corrections to minor typographical errors.
Page 364: Monitor Overall (Rev 2.10, Apr 2020)
“Monitor Overall” is an analyzer function that is accessed from the analyzer’s Main Menu banner screen. A description of this function follows, along with the information required to complete the menu screens within the function, and the steps necessary to perform the function. Viper II Cobra II 19.1. – Monitor Overall “Monitor Overall”...
Page 365 900 Hz. Use the keypad to enter the maximum frequency into the second field. NOTE Sensor Channels C & D are only available on the Viper II 19.1.1.6. Use the [] key to move to the “Units” column of the Channel A row. The “Units” field determines the engineering units in which the amplitude, or “Y”...
Page 366 User Manual Gen II (centimeters per second), Mils (1/1000th of an inch), Microns (1/1000000th of a meter), ubars (Millibars), Pascals, Volts, m/s/s (meters per second per second), cm/s/s (centimeters per second per second, dB (decibels), Special and None. NOTE Selecting mils or microns in this block will not allow you to select any accelerometer input in paragraph 19.1.1.10 below.
Page 367: Speeds (Viper Ii Only)
Only pulsed inputs such as a Phototach, Lasetach or magnetic pickup may be used with the Viper II Analyzer. This pulse input may be, but is not necessarily a once-per-rev pulse. The preference is actually a multi-pulse per revolution input.
Page 368: Monitor Overall
User Manual Gen II 19.1.2.5. The “FACTOR” column can be used to enter a multiplier for converting Hertz to actual component speed in RPM. If using a Pulse input, the RPM is equal to Hertz x Factor. The analyzer assumes the input to be relative to Hz (cycles per second) so that an input of one pulse per revolution (one-per-rev) would require a FACTOR of 60 (1 per-rev X 60 Hz assumed) to equal Revolutions Per Minute (RPM).
Page 369 “Units” – Displays the unit of measure selected in paragraph 19.1.1.6 above for each sensor channel configured. 19.1.3.1.6. “% Speed” (Viper II only) – Displays the speed in percent for each tach configured ONLY if a 100% speed value was in entered in paragraph 19.1.2.4. Otherwise, these fields will be blank.
Page 370: Collecting Data With Spectra
User Manual Gen II channels when Channel A reached its maximum value. The default selection is Channel A and the heading over the third column is reads “MxChanA”. This will change to display the selected channel as shown in the screenshot below. 19.1.3.2.2.
Page 371 User Manual Gen II 19.1.4.1. – Fields displayed when viewing Spectra 19.1.4.1.1. Modifier – Displayed in the upper left above the “Y” scale. This will display the modifier for the affected channel entered in paragraph 19.1.1.7 above. 19.1.4.1.2. Channel description (Desc) – Centered at the top of the spectrum and is the description for the affected channel entered in paragraph 19.1.1.11 above.
Page 372 User Manual Gen II 19.1.4.2. – Function Key Options when viewing Spectra 19.1.4.2.1. Pressing the [F1] “Options” key will change the [F1], [F2], [F3], [F4] and [F5] boxes to read “Cursor”, “X Scale”, and “Y Scale”, “View” and “Cancel” respectively as shown in the figure below.
Page 373 User Manual Gen II above and when presented with the choice, press either the [F1] “Normal” or [F3] “None” key and the multiple cursors will be replaced by your selection.  Pressing the [F3] “None” key will remove any cursor currently displayed on screen.
Page 374 User Manual Gen II prior to pressing the [F1] key. If the view is already at the maximum range of the specified scale range, no scaling change will occur. However, the cursor will be displayed and the X, Y, and “Ovr” (Overall) values will be shown in the upper right corner of the screen.
Page 375 1.01: Updated broken chapter reference links in the footer and added revision table. Berlin 1/22/2016 2.00: Major rewrite generalizing the manual to cover both the Viper II and Cobra II. This chapter was updated East with screenshots and corrections to minor typographical errors.
Page 376: Check Track (Rev 3.00, Apr 2020)
Data from this function is not stored in the analyzer. The “Check Track” function can be performed using either an industry-standard strobe for visual blade tracking or the ACES Systems’ Model 550 TraX Before using the “Check Track” function on the analyzer, you must first install physical equipment such as cables and sensors.
Page 377 User Manual Gen II  Connect the integrated cable of the Model 550 TraX directly to the “AUX/COM” input port located on the top end of the analyzer. If using a strobe light, connect the strobe interface cable to the analyzer’s “STROBE” input port.
Page 378 User Manual Gen II  Use the [] key to move down to the “No. of Blades” field. Using the [] key, select the number of blades on the rotor you are checking. Available selections are 2 through 6.  Use the [] key to move down to the “Relative to Blade” field. This selection will determine the reference blade for tracking displays.
Page 379 User Manual Gen II  Use the [] key to move down to the “Trkr Inclination” field. Use the Inclinometer to measure the installed angle and enter it in this field. Valid entries are from 30 thru 90 degrees. (Refer to the Model 550 TraX operational supplement, P/N 75-900-4043 for additional details as necessary.) ...
Page 380 1.01: Updated broken chapter reference links in the footer and added revision history table. Berlin 1/22/2016 2.00: Major rewrite generalizing the manual to cover both the Viper II and Cobra II. This chapter was East updated with screenshots and corrections to minor typographical errors.
Page 381: Test Tach Power (Rev 2.01, Apr 2020)
(Revision 2.01, Apr 2020) “Test Tach Power” is accessed from the analyzer’s Main Menu banner screen. This function allows you to power optical tachometers to align reflective tape or simply check their function. Viper II Cobra II 21.1. -Test Tach Power...
Page 382 Gen II NOTE Tach Channels 3 & 4 are only available on the Viper II From this screen, you have a quick method of providing power to each of the four tach channels with no further configuration. Pressing [F0] will return you to the Main Menu. Pressing [F1], [F2], [F3], or [F4] will change the bottom line of the screen to display “Tach Power: TACH X”...
Page 383 User Manual Model 4040 Viper Analyzer Revision History 1/22/2016 2.00: Major rewrite generalizing the manual to cover both the Viper II and Cobra II. This chapter was updated East with screenshots and corrections to minor typographical errors. 4/1/2020 2.01: Updated screenshots for SP7 UI changes.
Page 384: Analyzer Management (Rev 2.10, Apr 2020)
The other items are user-accessible and editable items. All are described in the following sections. NOTE Some options appearing in the following screenshots will not be available on all units as they are for development/testing purposes only. Viper II Cobra II...
Page 385: Manage Sensors
User Manual Gen II 22.1. – Manage Sensors The “Manage Sensors” option allows you to preprogram information about all the vibration sensors you own or use. Once all sensors are preprogrammed, they can be recalled and selected from an option list during a balance/analysis procedure, saving time during the procedure by eliminating the need to re-input sensor data.
Page 386: Add Or Edit Sensor
 The sensor’s amplitude units sometimes called EU or engineering units. This will be expressed in one of the following formats: o Both The Viper II and Cobra II - g’s (for equivalent gravities), IPS (Inches Per Second), mm/sec (millimeters per second), cm/sec (centimeters per second), mils...
Page 387 “Bias Voltage” or similar. If you do not know the IEP requirements of the sensor, call ACES Systems and ask for Product Support.  The input type of your sensor. Available selections are single ended and differential. The correct selection here will reduce the noise and increase the accuracy of the sensor’s...
Page 388 “Yes”. If you do not know the polarity requirements of the sensor, call ACES Systems and ask for Customer Support.  The “IEP Sensor:” field is a toggle selection field. The two selections are “Yes” and “No.”...
Page 389: Create Report
Sheet, Single-Ended being the most common. If you do not know the polarity requirements of the sensor, call ACES Systems and ask for Product Support.  When all fields are completed as required, press [OK] to accept your settings and exit the screen.
Page 390: Set Date/Time
User Manual Gen II 22.2.1. – Set Date/Time The first available setting is that of the date and time. Follow the instructions below to set the date and time to your specific requirements.  Enter the time in a 24-hour format as follows in the “Time” field. Hour - Valid range is 1 through 24, followed by a “.”...
Page 391: Set Language
User Manual Gen II  Using the [] to move to the “Region” field. You may specify the geographic region you wish to use by using the [] key to toggle the selection to the location you wish to use. ...
Page 392: Set Power-Off Timeout
User Manual Gen II Use the [] key to toggle the selection between the available language options. Once the choice is highlighted, press the [OK] key to save and continue in that new language. 22.2.3. – Set Power-Off Timeout The Power-off timeout will turn the analyzer off after the period of inactivity specified below is reached.
Page 393: Set Screen Saver Timeout
User Manual Gen II  Use the [] key to select “Yes” or “No” to answer the question “Enable power-off timeout?”. Use the [] key to exit the field.  Exiting the above field with “Yes” selected will cause the “Timeout length (minutes)” line to appear.
Page 394: Analyzer Information
User Manual Gen II original setting. This will help reduce power consumption and increase battery life. To Set the Screen Saver Timeout, do the following:  Use the [] key to select “Yes” or “No” to answer the question “Enable Screen Saver?”...
Page 395: Aces Systems Contact Information
The “Analyzer Version Information” screen displays all of the available software and hardware version information. ACES Systems product support may ask for this information in helping to determine any issues that may arise with the analyzer. Press [OK] to exit this screen and return to the “Analyzer Information”...
Page 396: Analyzer Owner Information
User Manual Gen II 22.3.3. Analyzer Owner Information You may enter information relative to you or your company into the fields on this screen. Use the keypad, or the optional USB keyboard, to enter information into these fields. Entries here will appear on all reports created by the analyzer.
Page 397: Battery Information
User Manual Gen II  The [F2] “Cal Rpt” key will cause the analyzer to create a calibration report based on the last successful calibration performed on the analyzer. Pressing this key will cause the analyzer to display the “Creating Report” screen pictured below. When complete, you will return to the “Analyzer Owner Information”...
Page 398: Analyzer Legal Information
User Manual Gen II  Charge (%) – The current battery level in percent. Should match battery level displayed in the status pane.  Voltage (V) – The current voltage level of the battery.  Current (mA) – The measure of current flow to and from the battery in milliamps. A positive value is displayed when the battery is being charged.
Page 399: Analyzer Terms And Conditions
User Manual Gen II 22.4.1. – Analyzer Terms and Conditions The first selection is the “Analyzer Terms & Conditions”. These are the terms and conditions you agree to for using the analyzer. Highlight the menu item and press [OK] to display the agreement.
Page 400: Open Source Components
USB memory device. 22.5. – Analyzer License Information The Main Menu items are purchased from ACES Systems and activated in the analyzer by entering specific license codes. To add licenses, follow the instructions below.
Page 401: Add Analyzer License
User Manual Gen II 22.5.1. – Add Analyzer License Select the “Add Analyzer License from USB Drive” menu item to add additional licenses to the analzyer. You can either manually enter the license number into the “License Key:” field shown below and press [OK] or: ...
Page 402: Database Management
Gen II Select “Active Licenses” to view the current licenses that are active on the analyzer. If you wish to add features to the analyzer please contact ACES Systems Global Solutions Specialists. 22.6. – Database Management The “Database Management” function allows you to manage data stored inside the analyzer’s memory.
Page 403: Import Setups From Usb Drive
User Manual Gen II 22.6.1. – Import Setups from USB Drive “Import Setups from USB Drive” allows you to quickly, easily and accurately configure the analyzer to perform specific jobs by loading preconfigured setups into the analyzer. Setups can be found on our web site (www.AcesSystems.com) or exchanged between analyzers. To import a previously exported setup, follow the steps below.
Page 404: Restore Jobs From Usb Drive
User Manual Gen II When the process is complete, you will return to the “Database Management” screen. You can navigate to the job menu item associated with the setup and either “Start Job” or “Manage Setups” with the newly stored setup. For more detailed instructions on this function please refer to Chapter 3.
Page 405: Copy Database To Usb Drive
User Manual Gen II When the restoration is complete, the analyzer will display the “Import Results” screen. Please reference Chapter 3 for more detailed infomration regarding this page. 22.6.3. – Copy Database to USB Drive “Copy Database to USB Drive” allows you to create a complete copy of all jobs, setups, and sensors stored in the analyzer.
Page 406 User Manual Gen II If there is a USB memory device in the analyzer, the process will begin automatically. If there is no USB memory device, insert a USB memory device and follow the onscreen instructions to start the process. When the copy is complete, the analyzer will display the message shown below.
Page 407: Erase All Jobs
User Manual Gen II If there are any “Pending Reports” stored in the analzyer, the analyzer will prompt you to transfer those to the USB memory device also. Use the [F1] “Yes” and [F5] “No” keys to make your selection. 22.6.4.
Page 408: Database Information
User Manual Gen II The analyzer will present the warning message below. Remember, this operation is not recoverable and if you have not previously exported any information you want to save, the data will be lost. Press [F1] “Yes” to erase the data or [F5]”No” to return to the previous screen. 22.6.5.
Page 409: Create Setup Report
User Manual Gen II Highlight the menu item and press [OK] to display the information below. After you have retrieved the necessary information, press the [F5] “Continue” key to return to the “Database Management” menu. 22.6.6. – Create Setup Report It is possible to generate a report which lists all of the setups stored in the analyzer, their lineage (in the case of setups copied from a master) and their attributes.
Page 410 User Manual Gen II After you start the process, the analyzer will display a status message similar to the one below while it generates the report. When the report is finished, the analyzer will display the message below. Press the [F5] “Continue”...
Page 411 User Manual Gen II The report will be added to the “Pending Reports” shown in the status pane. When you are ready, you can either transfer them to the USB memory device from any menu which contains the [F1] “Xfer Rpt” key (See Chapter 3, “Using the Gen II Analyzer”) or use the “Transfer Reports” menu item on the Analyzer Management menu described in paragraph 22.8 below.
Page 412: Create All Job Report
User Manual Gen II 22.6.7. – Create All Job Report You can create a report that lists all job types stored in the analyzer by selecting the “Create All Job Report” menu item. You may want to save a listing of all jobs and their status or Product Support may ask you to create the report for troubleshooting.
Page 413 User Manual Gen II After you start the process, the analyzer will display a status message similar to the one below while it generates the report. When the report is finished, the analyzer will display the message below. Press the [F5] “Continue”...
Page 414 User Manual Gen II The report will be added to the “Pending Reports” shown in the status pane. When you are ready, you can either transfer them to the USB memory device from any menu which contains the [F1] “Xfer Rpt” key (See Chapter 3, “Using the Gen II Analyzer”) or use the “Transfer Reports” menu item on the Analyzer Management menu described in paragraph 22.8 below.
Page 415: Format Usb Drive
User Manual Gen II 22.6.8. – Format USB Drive Your analyzer will come with a USB memory device intended for transferring data to or from the analyzer. This device is formatted with a FAT32 file system to insure proper operation with the analyzer’s file system.
Page 416: Copy User Manual To Usb
User Manual Gen II  Navigate to the “Format USB Drive” menu option and press [OK] to begin the process. The analyzer will provide the warning message below. Remember that this process is unrecoverable. Make sure you have all of the necessary information copied from the USB memory device BEFORE beginning this process.
Page 417: Transfer Reports
User Manual Gen II Once complete, the PDF copy can be located in the aces_manuals folder on the USB memory device. 22.8. – Transfer Reports After you have created a report as described in Chapter 3, “Using the Gen II Analyzer”, you can transfer them to the USB memory device by using this menu item.
Page 418 1.01: Updated broken chapter reference links in the footer and added revision history table. Berlin 1/20/2016 2.00: Major rewrite generalizing the manual to cover both the Viper II and Cobra II. This chapter was updated East with screenshots and corrections to minor typographical errors.
Page 419: Battery Charger And Battery
Chapter 23 Equipment and Accessory Setup and Troubleshooting (Revision 4.01, Apr 2020) The information in this chapter is provided to assist you in avoiding some of the common pitfalls associated with setting up and using the various accessories, cables and sensors required for performing routine balance or vibration survey jobs with the Gen II Analyzers.
Page 420 The Lithium-ion battery pack contained in the ACES Viper II and Cobra II is classified under UN 3480 and has less than 8g equivalent lithium content. This pack has been found to comply with tests listed in the United Nations Manual of Tests and Criteria, Part 38.3.
Page 421: Extended Storage
User Manual Gen II  When shipping, the package must be marked as follows: PACKAGE CONTAINS LITHIUM-ION BATTERIES (NO LITHIUM METAL). 23.1.2. – Extended Storage When the unit is placed in storage, the battery will lose approximately 5% charge each month. If the unit is to be stored for a long duration, the unit should be charged before placing in storage to ensure the battery does not become completely exhausted.
Page 422: Phototach
Never use any reflective target tape other than that recommended in the manual (3M Tape, Model 7610 or ACES Systems’ P/N 10-400-0176). The incorrect type of reflective tape can render the LASETACH ineffective in high-speed applications. An angle of 5 to 10 degrees from the perpendicular of the LASETACH/reflective tape is best.
Page 423 User Manual Gen II 23.6.1. – Reflective Tape Width Requirements If problems are experienced using the Phototach (this does not apply to the Lasetach) while balancing high-speed props with the reflective tape further out on the blade, refer to the following chart for tape placement adjustments.
Page 424 Systems for assistance in scaling the signals to a manageable level. Overload Indicator Each indicator letter identifies the internal stage of signal processing where the overload is occurring. This information allows ACES Systems to help diagnose the issue. O = ADC Inputs H = High Pass Filter I = Integrator 23-6 –...
Page 425 1.01: Added Chapter 23.1.2 Extended Storage and revision history table and added revision history table. Berlin 1/20/2016 2.00: Major rewrite generalizing the manual to cover both the Viper II and Cobra II. This chapter was updated East with screenshots and corrections to minor typographical errors.
Page 426 Chapter 24 Reading Spectrum and Scales (Revision 2.10, Apr 2020) The information in this chapter is provided to assist you in reading the graphical displays of the various types of data that can be acquired using the Gen II Analyzers. 24.1.
Page 427 User Manual Gen II The scale of the “X” axis, along the lower horizontal edge, displays the frequency of interest in Hertz (Hz), which is cycles per second, or in Revolutions per minute (RPM), as shown in the figure. The frequency scale is a means of locating a component operating at a known number of cycles per second (Hz) or minute (RPM).
Page 428 User Manual Gen II continue to decrease as the bars converge. Allow the unit to collect data as long as the error continues to decrease. This will insure you have the most accurate data possible. Remember that the percent error will be slower to reduce as the balance is improved. 24.2.2.
Page 429 User Manual Gen II 24.2.4. –Status Messages The top line of this screen can display four different status messages. The messages are: “Waiting for Data” -This message is displayed until in-range RPM, IPS, and Phase Angle readings are recorded by the analyzer. The only way to exit the screen while this message is displayed is to use the [F0] “Back Up”...
Page 430 NOTE Vibe Channels C & D are only available in the Viper II 24.3. -Reading Polar Charts The Polar chart is a circular graph on which data points are displayed using the angle, and the distance from the center point.
Page 431 User Manual Gen II The “X” axis of the phase angle chart ranges from 0 to 360 degrees and divided into 30-degree increments. The “Y” axis range is from 0.20 to 1.00 and divided onto 0.20 increments. 24.3.2. –Clock Angle Polar Chart The clock angle Polar Chart, as shown in the illustration below, appears in most rotary wing- based analyzer functions such as Main Rotor Track &...
Page 432 User Manual Gen II 24.3.3. –Viewing Polar Charts during Data Acquisition During data acquisition, one of the polar charts shown below will be displayed depending on the analyzer function being used. Phase Angle Polar Chart Clock Angle Polar Chart The vibration will be indicated by a circle displayed at a location on the polar that corresponds with the “Vib”...
Page 433 User Manual Gen II Use the “Therm” key to view the vibration readings in a converging scale (also known as the “thermometer”. The key’s location will vary depending on the job function being used. For more information on reading a converging scale, see Section 24.2 above. Use the [F3] “+/- Pol.”...
Page 434 User Manual Gen II 24.3.9. –Reviewing Polar Charts During and After a Job During a job, in the Review data screen, you can press the “Polar” key to display the vibration data in a polar chart as shown below. The location of the “Polar” key and the type of chart will depend on the analyzer function being used.
Page 435 User Manual Gen II After a job has been started, polar charts are available when reviewing job data in the “Manage Jobs” menu option “Review” (see Chapter 3 “Using The Gen II Analyzer). The polar charts when reviewing a job are similar to charts shown above but contain additional options as shown in the screenshot below.
Page 436 User Manual Gen II Polar Chart displaying “Actual” weight placement Polar Chart displaying calculated “Solution” 24.3.11. –Multiple Vibration Channels If multiple vibration channels are configured, the “< > Vib Channel” message will appear on the screen. Pressing the [] or [] keys will cycle through the available channels. Polar Chart displaying “Vertical”...
Page 437 1.01: Updated broken chapter reference link in the footer and added revision history table. Berlin 2/12/2016 2.00: Major rewrite generalizing the manual to cover both the Viper II and Cobra II. This chapter was updated East to include Polar Charts and corrections to minor typographical errors.
Page 438 Smart Li-Ion Battery (Internal), 87 Wh Operating Time: 8.0 Hours Charging Time: 3.0 Hours (approximately) Memory 1 GB Flash Inputs Viper II Cobra II Vibration Channels: 4 ea. 2 ea. Tach / Mag Pickup: 4 ea. 2 ea. TraX Optical Tracker 1 ea.

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