1. Manuals
  2. Brands
  3. ACES System Manuals
  4. Battery Charger
  5. Viper 4040
  6. User manual

ACES System Viper 4040 User Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

User Manual

Viper 4040
ACES Systems/TEC Aviation Division
Document Number 4040-OM-01
Revision 3.02
Oct 2012
Part Number 75-900-4040
10737 Lexington Drive – Knoxville, TN 37932-3294 USA – Telephone 865-671-2003– Fax 865-675-1241 – Web
www.acessystems.com

Advertisement

Table of Contents
loading

Summary of Contents for ACES System Viper 4040

  • Page 1: User Manual

    User Manual Viper 4040 ACES Systems/TEC Aviation Division Document Number 4040-OM-01 Revision 3.02 Oct 2012 Part Number 75-900-4040 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, 2000 - 2012. 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 (Revision 3.02, Oct 2012) Preface (Revision 3, Oct 2012) Contact ACES Systems Warranty Calibration and Certification Introduction (Revision 2, Oct 2012) Notes, Cautions, and Warnings Conventions Analyzer Description (Revision 3, Oct 2012) Keypad Screen Input and Output Ports 2.3.1 CHANNEL Ports 2.3.2...
  • Page 4 Using the VIPER 4040 (Revision 2, Aug 2007) Entering Data 3.1.1 Using the Keys 3.1.2 Filling in Fields Loading a Setup Main Menu Propeller Balance (Revision 2, Oct 2012) Start Job 4.1.1 Prop Balance Setup 4.1.1.1 Prop Balance Setup Screen 4.1.1.2...
  • Page 5 User Manual VIPER 4040 5.2.1.4 Main Rotor Adjustment Symbol Setup and Solution Logic 5-13 Setup Screen 5.2.1.5 Chart Definition 5-13 5.2.1.6 Main Rotor Setup Example 5-14 5.2.1.6.1 Main Rotor Setup Screen 5-15 5.2.1.6.2 Tracking Setup Screen 5-16 5.2.1.6.3 Main Rotor Conditions Setup 5-16 5.2.1.6.4...
  • Page 6 6.4.2 Setup List 6-15 6.4.3 Job Identification 6-16 6.4.4 Connect Sensors 6-16 6.4.5 Start Aircraft 6-17 6.4.6 Select Tail Rotor Condition Screen 6-18 6.4.7 Data Acquisition 6-18 6.4.8 Shut Down Engines 6-20 6.4.9 Review Prior Run(s) Data 6-21 6.4.10 Tail Rotor Suggested/Installed Weights Screen 6-21 6.4.11 Tail Rotor Re-Solve Feature...
  • Page 7 User Manual VIPER 4040 TFE731 Performance (Revision 3, Oct 2012) TFE731 Performance EMS 8.1.1 Necessary Equipment 8.1.1.1 Datalogger (JEDA) 8.1.1.2 ACES AvTrend Software 8.1.1.3 RS232-to-RS422 Communications Cable 8.1.1.4 EEC, N2 DEEC, and N1 DEEC Comm Cable(s) 8.1.1.5 Ambient Temperature Probe and Cable 8.1.1.6...
  • Page 8 10.3.3 Delete All 10-12 10.4 Manage Setups 10-13 10.4.1 Edit 10-13 10.4.2 10-13 10.4.3 Delete 10-13 Transient Vibration Surveys (Revision 3, Oct 2012) 11.1 Start Job 11-2 11.1.1 Transient Survey Setup 11-4 11.1.1.1 Config 11-7 11.1.1.2 Speeds 11-8 11.1.1.3 Parameters (Parms) 11-9 11.1.1.4 Plots...
  • Page 9 User Manual VIPER 4040 18.1 Miscellaneous Items 18-1 18.1.1 Setup Sensors 18-2 18.1.2 Set Date and Time 18-5 18.1.3 Set Power-Off Timeout 18-7 18.1.4 Set Job Count Limit 18-8 18.1.5 Check Battery 18-9 18.1.6 Analyzer Information 18-10 18.1.7 Database Information 18-12 18.1.8...

  • Page 10: Preface (Revision 3, Oct 2012)

    Preface (REVISION 3, OCT 2012) Contact ACES Systems General For general information regarding ACES Systems products and services, contact one of the international representatives listed at: http://www.acessystems.com/worldreps.htm. Technical Support For technical support please use the contact information found at: http://www.acessystems.com/contact.htm. If you require assistance with an operational problem with the analyzer, please have as much detailed information as possible available before contacting ACES Systems.

  • Page 11: Warranty

    Warranty The ACES Systems’ Viper Model 4040 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

    User Manual Viper 4040 Calibration and Certification Your ACES Systems equipment is calibrated and certified per NIST standards, effective the date of shipment. TEC requires the unit to be calibrated by TEC or a TEC authorized service facility on an annual basis to insure accuracy and currency of installed electronic components.

  • Page 13: Introduction (Revision 2, Oct 2012)

    The Viper 4040 allows you to print spectra and balance jobs directly to a serial printer, and with the use of a serial-to-parallel converter, to a parallel printer for inclusion in aircraft records or as file copies.

  • Page 14: Notes, Cautions, And Warnings

    1.1 - Notes, Cautions, and Warnings Throughout this manual you will encounter “notes, cautions, and warnings.” They will be in BOLD capital print centered above a short paragraph. The information in the paragraph is defined as follows for each of the three categories. NOTE Information considered essential to emphasize for clarity or to ensure the related procedure is correctly accomplished.
  • Page 15 User Manual Viper 4040 5. The “Banner” is the uppermost portion of the screen display, which defines its relationship to the currently-running analyzer function. The “Highlight Bar” is the darkened bar (controlled by the use of the arrow keys, [⇓] and [⇑]) used to identify and select the current menu item.

  • Page 16: Analyzer Description (Revision 3, Oct 2012)

    Chapter 2 Analyzer Description (Revision 3, Oct 2012) 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 in Section 2.5. COMM Model 4040 AC E S...

  • Page 17: Keypad

    2.1. Keypad The analyzer keypad consists of 31 function keys. (See Chapter 3, “Using the Viper 4040 Analyzer” for keypad operation.) 2.1.1. Located at the top left of the analyzer keypad, the [ON/OFF] key, when pressed once and released, turns the analyzer power on or off. The analyzer incorporates a power conservation function.
  • Page 18 User Manual 4040 Viper 2.1.4. Five function keys ([F1], [F2], [F3], [F4], and [F5]) are located directly below the analyzer’s screen. Five small rectangular boxes on the screen directly above the keys define their use as it corresponds to each screen. The purpose of each key may change from screen to screen.
  • Page 19 2.1.8. The [ENTER] key is pressed to accept data or a menu selection and set that selection into motion. The key is used in survey and balance procedures to proceed to the next step. HELP 2.1.9. Pressing the [HELP] key allows you to access guidance and/or examples of information that can be entered into the current field.

  • Page 20: Screen

    User Manual 4040 Viper 2.1.13. The symbols key ([. @%&]) has multiple functions. The “.” is used for placement of a decimal in fractional numbers such as 98.6. The other characters on this key are used as they would be in normal text such as “54 grams @ 230 degrees” or “3% error,”...

  • Page 21: Input And Output Ports

    2.3. - Input and Output Ports There are nine input/output ports on the top end panel of the analyzer, as shown in the figure above: four “CHANNEL” (vibration channel) inputs, four “TACH” (tachometer) inputs, and one “AUX/COMM” (auxiliary/communication) input/output port. 2.3.1.

  • Page 22: Strobe Port

    User Manual 4040 Viper modem. This port is also used to connect an ACES Systems’ Model 550 TraX or Model 540 Series Optical Trackers. Three additional input / output ports are provided on the left side panel of the analyzer. They are the STROBE, USB and BATT/CHG ports.

  • Page 23: Additional Standard Equipment

    WARNING The protective cap on the “BATT CHG” port must remain in place during periods when the charging unit is not connected. The two pins of the charging input are active at all times and may be shorted by unintentional contact with a conductor if the cap is not in place.

  • Page 24: Battery Charger

    User Manual 4040 Viper supply power at the rate of 4.5 Amps for one hour or at the rate of 1Amp for 4.5 hours. The difference in battery technology removes the "memory effect" associated with NiCd batteries. The analyzers in this serial number group also have integrated "smart-charger" technology. The battery can be fully cycled (charged and discharged), or partially discharged prior to re- charge, or any combination of the two methods and the smart-charging circuit combined with the NiMH chemistry will result in having 100% battery capacity available.

  • Page 25: Nickel Metal Hydride (Nimh) Equipped Analyzers

    2.4.2.2. Nickel Metal Hydride (NiMH) equipped analyzers The analyzer’s internal battery must be charged periodically. This is accomplished using the battery charger included as standard equipment with your analyzer and shown in the photograph below. The 12-Volt DC battery charger is used to charge the 4040’s Nickel Metal Hydride batteries.

  • Page 26: Usb Communications Cable

    User Manual 4040 Viper 2.4.3. USB Communications Cable An optional USB Communications cable is available for use with the Model 4040 Viper. The cable has a standard USB Type A connector at one end and an MS 4-socket connector at the other.

  • Page 27: User Manual

    Unlike turbofan or rotary wing applications, most propeller balancing applications use common accessories, so ACES Systems has assembled a propeller balancing kit, described below, which can be purchased with the Viper 4040 Analyzer. 2.5.1. Propeller Balancing Kit The propeller balancing kit contains all the necessary items to complete a single-engine, single-plane propeller balance.

  • Page 28: Accelerometer

    User Manual 4040 Viper 2.5.1.2. 991D-1 Accelerometer Although the Model 4040 will support a full range of vibration sensors, the 991D-1 accelerometer (see the illustration above) was selected as the standard for use with the propeller balance kit due to its rugged construction, accuracy, cost, and range of operation. A single sensor is supplied with the propeller balancing kit.

  • Page 29: Phototach

    2.5.1.4. Phototach The Phototach is a short-range optical sensor used in acquiring speed and phase angle data. Its optimum range is 12 to 18 inches from the target (reflective tape, 3M 7610). It is supplied with a three-inch by three-inch base. An optional camera type swivel mount is available from ACES Systems.

  • Page 30: Propeller Protractor

    User Manual 4040 Viper 1300 and new-design Phototachs with part number 10-100-1773 have a socket connector that connects directly to the bulkhead connector end of this cable. 2.5.1.6. Propeller Protractor The propeller protractor is designed to measure angles in a typical propeller/spinner assembly.

  • Page 31: Case Bolt Adapter Set

    1. Rotate the propeller with the reflective tape until it is directly in front of the Phototach. 2. With the propeller in this position, place the protractor over the spinner with the Rotation indicator pointing in the direction of rotation (forward looking aft) and one of the 360 degree points aligned with the position of the vibration sensor.

  • Page 32: Right-Angle Sensor Mount

    User Manual 4040 Viper 2.5.1.9. Right-Angle Sensor Mount The right-angle sensor mount shown in the left portion of the illustration above is made of anodized aluminum and designed to be mounted directly on the engine case bolt or to the case bolt adapter, shown in the right portion of the illustration above.

  • Page 33: Aces Systems Balance Placard

    NOTICE: This aircraft's power train rotating components compose an indexed assembly. The propeller was dynamically balanced using: 2.5.1.12. ACES Systems Balance Placard A placard similar to the one shown above is included in the propeller balancing kit. This or a similar placard should be attached to the spinner bulkhead upon completion of balancing to show that the propeller has been dynamically balanced and is indexed to the crankshaft of the engine.

  • Page 34: Using The Viper 4040 (Revision 2, Aug 2007)

    Chapter 3 Using the Viper 4040 Analyzer (Revision 2, Aug 2007) 3.1. – Entering Data Data is entered into the analyzer in one of three ways: by typing data using the keypad, transferring data from a personal computer using AvTrend software, or indirectly by selecting from preset options.

  • Page 35: Filling In Fields

    For example, to type the number “5”, press the key once, wait for two seconds. The number “5” should appear on the screen. To type the letter “N”, press the key three times rapidly, and then wait for two seconds. The letter “N” should appear on the screen. The insert position of the character being typed is indicated on screen by the cursor.

  • Page 36: Main Menu

    User Manual Viper 4040 3.3. - Main Menu The main menu is the first menu to be displayed when the analyzer is turned on. (See the following figure.) From this menu you may access all functions of the analyzer by using the available menu choices.

  • Page 37: Propeller Balance (Revision 2, Oct 2012)

    Chapter 4 Propeller Balance (Revision 2, Oct 2012) “Propeller Balance” is an analyzer function that 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 “Propeller Balance” banner screen menu (also shown below). Each of the listings on this banner screen menu is an option within the function.

  • Page 38: Start Job

    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 analyzers memory;...

  • Page 39: Prop Balance Setup

    User Manual Viper 4040 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” selection. The screen displays the message as shown below.

  • Page 40: Prop Balance Setup Screen

    this screen using the [⇓] and [⇑] keys. (Refer to Chapter 3, “Using the Model 4040 Viper Analyzer” if you are unfamiliar with using the keypad or inputting data.) Complete the “Prop Balance Setup” screen per the following example. 4.1.1.1. – Propeller Balance Setup Screen To complete the “Prop Balance Setup”...
  • Page 41 User Manual Viper 4040 4.1.1.1.5. Using the [⇓] key, move to the “Relative to” field. Select “Tape” or “Sensor” using the [⇒] key. If using predetermined weight locations, select “Tape.” Decide if you wish to measure weight placement phase angles relative to the reflective tape or the vibration sensor as an index point.

  • Page 42: Edit Icf

    “Monopole” - A monopole type pickup with an output of 120mV or greater. “Tach Gen” - A one to three pole tachometer generator with an output of 390mV or more. (This type of input is normally used for synchronous vibration surveys and not for a once per rev signal used to calculate phase angles in balancing.) 4.1.1.1.12.

  • Page 43: Sensor Setup

    User Manual Viper 4040 4.1.1.2.1. If you do not have ICF information for the balance setup, press the [BACKUP] key. This sets the ICF at the default for the known conditions. The ICF default value is added automatically when the Setup is created. The user may use this key at any time to reset the ICF to default.

  • Page 44: Prop Hole Layout Setup

    4.1.1.3.1. This is an information-only screen for use in verifying the parameters of the vibration sensor you have chosen. You may not edit or otherwise enter information on this screen. If this sensor does not possess the specifications you require for this setup, you may enter a new sensor in the “Sensor Setup” screen, or choose another sensor from the existing list.
  • Page 45 User Manual Viper 4040 4.1.1.4.2. Use the [⇓] key to move to the “No. of Holes” field. Enter the number of holes that correspond to the total number of trim weight mounting locations. The valid range of values for this field is 1 to 36.

  • Page 46: Job Identification

    measured as 174 degrees. On the screen, use the keypad to enter the angle of hole number 1 as “174.” Then, using the [⇓] key to move to the adjacent field (“No.”), input the number “1.” Next, measure to hole number 2. If hole number two is measured as 156 degrees, enter that value and “2”...

  • Page 47: Engine Information

    User Manual Viper 4040 4.1.3. – Engine Information 4.1.3.1. The “Engine Information” banner screen is displayed. This information is optional but will appear on the job printout if entered and will assist you in identifying this job when stored in memory. Complete the information fields using the keypad. When finished, press [ENTER] to continue.

  • Page 48: Tachometer Setup

    4.1.4.1. 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.

  • Page 49: Start Aircraft

    User Manual Viper 4040 7. Remove the tape backing and attach the reflective tape to the propeller at that location. Be sure to smooth out any wrinkles or bubbles in the tape. Ensure the edges are smoothed and firmly attached.

  • Page 50: Acquiring Data

    4.1.6. - Acquiring Data After starting the aircraft, the “Set Engine Speed” banner screen is displayed. At the top left of the screen, the run number is displayed. Directly below the run number, is the message, “Set eng # x RPM to: xxxx (where xxxx is the balance speed entered in the setup being used.” This is your target RPM for balancing.

  • Page 51: Balance Solution

    User Manual Viper 4040 If you are satisfied with the results of the run and are ready for a solution, press [ENTER] to accept the data and continue. If you want to retake data for this run, press the [F1] “Retake #1” key. This option returns you to the “Set Engine Speed”...
  • Page 52 channel being used (Channel A only in the example screen shown) and a solution for the first run. In this example screen shown below, the “Solution” is “45.1 GMS @ 276°” which means to place 45.1 grams (g) of weight at 276 degrees from the index point. (see Chapter 2, Analyzer Description on how to use the Propeller Protractor to locate the phase angle.) In the lower portion of the screen you see an information line stating “Remove previous trim weights.”...

  • Page 53: Set Split Weights

    User Manual Viper 4040 4.1.8.1. – Set Split Weights To use the split weight option, press the [F1] “Split Weight” key from the “Balance Solution” banner screen. The “Set Split Weights” banner screen below is displayed. The single location solution (in this case 46.1 g @ 16 degrees) is displayed at the top of the screen.
  • Page 54 and install it at the new angles. Weigh the test weights carefully and enter the exact amount of weight in the “Actual Weight Installed” fields. If you discover a problem with the split weight locations you specified, press the [F1] “Re- split”...

  • Page 55: Resume Job

    User Manual Viper 4040 4.2. - Resume Job Selecting “Resume Job” from the “Propeller Balance” banner screen menu allows you to select a job to resume. Only jobs that are left unfinished will appear in the list. Using the [⇓] key, highlight the job you wish to complete from the list of incomplete jobs, and press [ENTER].

  • Page 56: Review

    Selecting “Manage Jobs” from the “Propeller Balance” banner screen menu presents several sub-menu choices to choose from. These choices allow you to “manage” previously completed job data you have stored in the analyzer. 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.

  • Page 57: Manage Setups

    User Manual Viper 4040 4.4. - Manage Setups Selecting “Manage Setups” from the “Propeller Balance” banner screen menu presents several sub-menu choices to choose from. These choices allow you to “manage” setups you have stored previously in the analyzer. 4.4.1. - Edit Selecting the “Edit”...

  • Page 58: Main Rotor Track & Balance (Revision 3, Oct 2012)

    This section is intended to familiarize you with the various electronic chart forms and setup screens used with the Viper 4040. First by looking at each of the chart forms found in both the main and tail rotor sections, then by using these forms to create an actual setup.

  • Page 59: Regular Main Rotor Chart Setup

    5.1.1.1. – 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 60: Irregular Chart Forms

    User Manual Viper 4040 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”. Max ICF Update: This field is used to limit the learning ability for move-line length. The example above uses 100%.

  • Page 61: Irregular Main Rotor Chart Setup

    5.1.2.1. – Irregular Main Rotor Chart Setup The main rotor balance chart shown to the right presents two different types of adjustments: the addition of weight to target or blank, and sweeping either the target or blank blade aft. The ICF is different for each set of adjustments, 220 grams of weight per 1.0 IPS and 2 points of aft sweep per 1.0 IPS.
  • Page 62 User Manual Viper 4040 Max ICF Update: This field is used to restrict the learning criteria for move-line length. The example uses 100%. With 100% selected, any move line over 100% of the expected length for a given adjustment, and the analyzer will not update the ICF. Using the keypad, enter the desired parameter to be placed in the setup.

  • Page 63: Tracking Influence Setup

    5.1.3. – Tracking Influence Setup The tracking influence setup screen is used to define the type and number of adjustment units used to move a blade 1.0 unit of measure at the condition listed. Conditions: The condition name will be automatically entered and is not editable. Adjustment Name: Using the keypad, enter a three-character identifier for the adjustment type.

  • Page 64: Setup Process

    User Manual Viper 4040 Offset: This field will only appear after “Tracking Planes” above is set to 2 and the field is exited. This field is used to define the optimum distance between multiple blade planes. The analyzer will use this distance to properly position the groups of blades.
  • Page 65 keypad. (Refer to Chapter 3, “Using the Model 4040 Viper” if you are unfamiliar with using the keypad.) Follow the directions below to complete the “Main Rotor Setup” screen. 1. In the “Name” field, enter a name for the setup using the keypad. The field will accept up to 20 alphanumeric characters.

  • Page 66: Tracking Setup Screen

    User Manual Viper 4040 10. Move to the “RPM” field using [⇓] key. Using the keypad, enter the approximate maximum expected RPM of the rotor system. 11. Press the [⇓] key and move to the “Trk Units”. Use the [⇒] key to select the desired unit of measure to be used by the analyzer when presenting tracking data.

  • Page 67: Main Rotor Condition Setup Screen

    2. Press the [⇓] key to proceed to the unit label field. This is the unit of measure used to identify the diameter described in the above block. The available choices are: “ft”, “in”, “mm”, or “m”. Use the [⇒] key to select the appropriate unit. This field is independent of the other unit fields required in the setup.

  • Page 68: Conditions Setup Screen, Example

    User Manual Viper 4040 • To the right of each condition name is a chart “ID” field for each measurement type. If a “0” is entered in an “ID” field, the measurement obtained will be for reference only and will not be used as a basis for correction. If a number is entered in an “ID” field, the setup will require an electronic chart be defined and will result in corrections being given for that measurement vs.

  • Page 69: Conditions Setup Screen, Example 3

    In the example main rotor condition setup screen above, only one vertical chart ID, one lateral chart ID, and one tracking adjustment ID have been entered. Based on the ID numbers entered, all of the vertical measurements for Hover, FLT 80, and FLT 120 will be averaged and the solution based on this average.

  • Page 70: Chart Definition

    User Manual Viper 4040 5.2.1.4. – Main Rotor Adjustment Symbol and Solution Logic Setup Screen The “M/R Adjustment Symbol Setup” 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)”...

  • Page 71: Main Rotor Setup Example

    lateral chart(s), then any track adjustment influences required. When all charts have been completed, press [ENTER] to save the setup and return to the “Main Rotor Manage Setups” menu. Follow paragraphs 5.2.1.6 through 5.2.1.6.7 for a complete example of a typical main rotor setup.

  • Page 72: Main Rotor Setup Screen

    User Manual Viper 4040 5.2.1.6.1. – Main Rotor Setup Screen 1. The name of the setup has been labeled as “EXAMPLE 1”. 2. Vertical vibration will be measured on channel “A”. 3. Lateral vibration will be measured on channel “B”.

  • Page 73: Tracking Setup Screen

    5.2.1.6.2. – Tracking Setup Screen 1. Enter “37.00” in the first block using the keypad. 2. Select “ft” for units of rotor diameter. 3. Select “in” for the display units of lead/lag data. 5.2.1.6.3. – Main Rotor Conditions Setup Use the sample polar charts in section 5.2.1.6. In the “Main Rotor Conditions Setup” screen above, two vertical charts and one lateral chart have been identified.

  • Page 74: Main Rotor Adjustment Symbol And Solution Logic Setup

    User Manual Viper 4040 When completed, press [ENTER] to continue. 5.2.1.6.4. – Main Rotor Adjustment Symbol and Solution Logic Setup In the “Main Rotor Adjustment Symbol and Solution Logic” setup screen above, the positive numeric value in a solution screen has been identified as the addition of weight, sweeping a blade aft, moving a blade upwards using either pitch change links or tabs.

  • Page 75: Vertical: Flt 80 - Flt 120 Chart Definition Example

    1. The name of the chart, “Vert: HOVER”, has been automatically entered from the “Main Rotor Conditions Setup” screen and is non-editable. 2. The chart type is “Regular”. 3. This chart uses no sweep adjustments, and is therefore left as “No”. 4.

  • Page 76: Lateral Hover Chart

    User Manual Viper 4040 5. Max ICF Update is “50”%. 6. Rotation is “45” degrees. 7. The type of adjustment applied in accordance with this chart is trim tab in degrees; therefore “DEG” has been entered. 8. The influence co-efficient for trim tab adjustment is “10.0” degrees per 1.0 IPS vibration.

  • Page 77: Main Rotor Balance Process

    8. The second Bld/Pos name entered is “T AFT”, utilizing an adjustment unit of “PTS”. The influence co-efficient for this point is “2.00” points adjustment per “1.0” IPS vibration. The Move line for this position is “11:30”. 9. The third Bld/Pos name entered is “BLANK”, utilizing an adjustment unit of “GMS” weight.

  • Page 78: Starting A New Job

    User Manual Viper 4040 . – 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 79: Setup List

    5.3.2. – 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 [ENTER]. If the setup you need is not present, press the [F1] “New” key to proceed to the “Main Rotor Setup”...

  • Page 80: Tracking Selections

    User Manual Viper 4040 If the analyzer has been used previously, a list of customer names will have been stored and are accessed by pressing the [F1] “Names” key. A name can then be selected from this list for use with this job.

  • Page 81: Connect Sensors

    When finished, press [ENTER]. 5.3.5. – Connect Sensors 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 channels you specified in the applicable setup. •...

  • Page 82: Start Aircraft

    User Manual Viper 4040 tachometer source for the analyzer. Connect and route the tachometer cable from the Phototach to the analyzer. NOTE If possible, the location of the Phototach should allow for the reflective tape to trigger it when the main rotor is in the reference position as specified by the balance chart.

  • Page 83: Select Aircraft Condition

    The analyzer will now direct the user to “Perform FOD check and start aircraft per flight manual”, refer to the aircraft’s flight manual for all aircraft starting and operational instructions. This screen allows you to view the current main rotor RPM. When the aircraft has been started and RPM is stable, press [ENTER] to continue.

  • Page 84: Data Acquisition

    User Manual Viper 4040 5.3.8. – 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. Within the screen, the analyzer will present the “Current” and “Average” RPM, IPS level, and Phase (Clock) angle readings.

  • Page 85: Review Data

    5.3.9. – Review Data The “Review Data” screen will now appear presenting the vibration data for the current run and condition. This screen also offers a chance to retake the measurement by pressing the [F1] “Retake” key. Pressing this key returns you to the data acquisition screen, paragraph 5.3.8. If you wish to measure and record track for this run and condition, press the [F5] “Track”...

  • Page 86: Check Track - Results

    User Manual Viper 4040 If you select [F5] to measure track, a screen will appear prompting you to “Aim and Fire Tracker”. At this point, the tracker is energized and ready to use. Verify the presence of a solid amber light at the bottom of the LED aiming lights. If present, raise the tracker into the rotor disk and align until the green LED’s illuminate.

  • Page 87: Shut Down Engines

    NOTE If the number of data packets gathered is less than 75 % of the total rotations defined in paragraph 5.3.4, select the [F5] “Track” option upon returning to the review data screen as described in paragraph 5.3.9. When you have finished reviewing the track, press [ENTER] to return to the “Review Data” screen.

  • Page 88: Solution Screens

    User Manual Viper 4040 The “Review Prior Run(s) Data” screen appears as shown. 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. Press the [⇑] key to return to the previous condition.

  • Page 89: Example Solution Screen #1

    adjustment, the trim tab adjustment would be skipped and only the pitch change link adjustment would be made. As stated earlier, the solutions presented by the analyzer are based on the charts defined in the setup and the measurements acquired for the current run. These influences will be updated each time the analyzer is used.

  • Page 90: Example Solution Screen #2

    User Manual Viper 4040 time. If you wish to stop the job temporarily, press the “Main Menu” key or simply turn the analyzer off. When you have finished entering the adjustments performed, press [ENTER] to continue to the next screen.

  • Page 91: Main Rotor Manage Data Functions

    The last correction given for our sample job is for the lateral ground measurement. The solution type for this adjustment is grams of weight or points of blade sweep. The solution presented for this screen is to add 200.00 grams to the target blade. NOTE The analyzer will attempt to give solutions that “resolve to zero”...

  • Page 92: View Main Rotor Track And Balance

    User Manual Viper 4040 5.4.2. – View Main Rotor Track and Balance The “View Main Rotor Track and Balance” screen appears as shown above. This screen presents both the suggested and installed adjustments for the run number and chart name displayed.

  • Page 93: View Main Rotor Chart

    5.4.3. – 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 94: View Main Rotor Chart Icfs

    User Manual Viper 4040 5.4.4. – 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 95: Tail Rotor Balance (Revision 3, Oct 2012)

    Chapter 6 Tail Rotor Balance (Revision 3, Oct 2012) This section is intended to familiarize you with the various electronic chart forms and setup screens used with the 4040 Viper. 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 96: Regular Tail Rotor Chart Setup

    6.1.1.1. - Regular Tail Rotor Chart Setup The tail rotor balance chart shown to the right depicts six adjustment points. Each adjustment point has been circled to ease identification and differentiate them from the clock hours. The move line for each adjustment point has been indicated with an arrow, and the ICF is labeled at the bottom of the chart as being 12 grams per 1.0 IPS.

  • Page 97: Irregular Chart Forms

    User Manual Viper 4040 Additionally, the tail rotor balance function assumes the adjustment will always be weight in grams. If the chart uses an adjustment type such as the number of washers per IPS, simply enter this number and overlook the label of grams.
  • Page 98 Name: The name of the chart will be automatically inserted from the main setup screen for a tail rotor job. Chart Type: Select “Irregular” as the chart type. No. of WtPos: Enter the number of weight positions used as indicated by the polar chart, in this case 4.

  • Page 99: Tail Rotor Setup

    User Manual Viper 4040 6.2. – Tail Rotor Setup The following paragraphs illustrate each of the screens necessary to define and store a tail rotor setup. 6.2.1. – Tail Rotor Setup Screen Use the following screen capture and polar chart to follow the steps below to complete the tail rotor setup screen for “Example 1”...
  • Page 100 1. In the “Name” field, enter a name for the setup using the keypad. 2. Press [⇓] to move to the “Sensor Channel” field. Use the [⇒] key to select the vibration sensor channel for this setup. 3. Press [⇓] to move to the “Sensor” field and select a sensor type to be used with this setup by pressing the [⇒] key.

  • Page 101: Tail Rotor Chart Setup

    User Manual Viper 4040 11. Press the [⇓] key to proceed to the “Maximum Balance Weight” field. If there is a published maximum amount of weight that may be used for balancing the tail rotor, you may enter it in this block. This is the total amount of balance weight allowable, not the limit of each balance position.

  • Page 102: Multiple Condition Setup

    5. Press the [⇓] key and enter the second weight position name of “A”. Using the [⇓] key to change fields, enter the influence co-efficient for this location as “5.0” grams adjustment per “1.0” IPS vibration, and the move line of “10:00” using the keypad. 6.
  • Page 103 User Manual Viper 4040 2. Press [⇓] to move to the “Sensor Channel” field. Use the [⇒] key to select the vibration sensor channel for this setup. 3. Press [⇓] to move to the “Sensor” field and select a sensor type to be used with this setup by pressing the [⇒] key.

  • Page 104: Tail Rotor Condition Setup Screen

    limit of each balance position. If the Installed Weights for a single run is more than the maximum allowed, the user will encounter a warning screen to notify him that the maximum weight limit is being exceeded. When finished with the main setup screen, press [ENTER]. 6.3.2.

  • Page 105: First Condition Tail Rotor Chart Setup Screen

    User Manual Viper 4040 6.3.3. -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: 1.

  • Page 106: Second Condition Tail Rotor Chart Setup Screen

    4. Press the [⇓] key to enter the grams per IPS influence for the tail rotor. This example uses “100.00” grams. 5. Press the [⇓] key and enter the first weight position name as “TARGET”. 6. Press the [⇓] key and enter the “Add @” move line for weight placement on the “TARGET”...
  • Page 107 User Manual Viper 4040 100% Balance Chart + Target 1. The name for the chart, “100%”, has already been inserted from the “Tail Rotor Condition Setup” screen 2. Press the [⇓] key and select the chart type by pressing the [⇒] key. The type of chart for this example is “Regular”.

  • Page 108: 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 Viper 4040. Prior to starting a new tail rotor balance job, you must first select the “Tail Rotor Balance”...

  • Page 109: Setup List

    User Manual Viper 4040 depending on whether you are using the tail rotor function for the first time, have previously defined tail rotor setups, or have a previously started job stored in the analyzer. • If you are using the analyzer for the first time, the “Tail Rotor Setup” banner screen will appear allowing you to define a new tail rotor setup to use.

  • Page 110: Job Identification

    6.4.3. - 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 will have been stored and are accessed by pressing the [F1] “Names”...

  • Page 111: Start Aircraft

    User Manual Viper 4040 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 112: Select Tail Rotor Condition Screen

    6.4.6. – Select Tail Rotor Condition Screen The “Select Tail Rotor Condition” screen allows the user to select which condition he would like to take balance readings from. This screen will only appear in “Multiple Condition” balance runs. In a single condition run, the next screen to appear is the “Data Acquisition” screen, proceed to paragraph 6.4.7.
  • Page 113 User Manual Viper 4040 The data acquisition screen will appear next, displaying the current and averaged rotor speed, vibration amplitude (IPS), and phase angle (in clock format). There will also be a numeric error indication associated with the averaged measurement. The numeric error value will typically lower rapidly when the amplitude of vibration is high.

  • Page 114: Shut Down Engines

    • After data has been collected press the [F1] End Run. 6.4.8. - Shut Down Engines A screen directing you to shut down the engine(s) will appear next. You can use the [F2] “Swap Job” key to return directly to the Main Menu without rebooting the analyzer. Shut down and press [F5] “Continue”...

  • Page 115: Review Prior Run(S) Data

    User Manual Viper 4040 6.4.9. – Review Prior Run(s) Data The “Review Prior Run(s) Data” screen appears. This will allow you to review the data just acquired as well as all prior run data (if any has been taken). •...

  • Page 116: Tail Rotor Re-Solve Feature

    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 117 User Manual Viper 4040 hole locations under the “Enter Installed Wts” portion of the screen. This adjustment will only be possible if there is already attaching hardware in holes # 6 and #7. If this is not the case continue below.
  • Page 118 weights are removed to leave the tail rotor free of weight. Press the [SPACE+/-] key once to 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 [ENTER] key to re-solve the balance solution.

  • Page 119: Tail Rotor Manage Data Functions

    User Manual Viper 4040 6.5. – Tail Rotor Manage Data Functions The tail rotor “Review Job” function also now presents chart information, correction history, and influence co-efficient for each job. The following paragraphs will describe the new screens and the navigation steps to review this information.
  • Page 120 6-26 - Tail Rotor Balance 6 Revision 3, Oct 2012...

  • Page 121: (Revision 3.02, Oct 2012)

    Chapter 7 Fan/Turbine Balance and Fan Blade Optimizer (Revision 3.02, Oct 2012) “Fan/Turbine Balance” is an analyzer function that 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”...

  • Page 122: Setup List

    defined fan setups available in the analyzers memory; or 3) Resuming an incomplete fan job being held in the analyzer’s memory. 7.1.2. 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.

  • Page 123: Incomplete Job

    Manual Viper 4040 User 7.1.4. Incomplete Job. 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” selection. The screen displays the message as shown below. If you press the [F1] “Yes”...

  • Page 124: Complete The Fan/Turbine Balance Setup

    Complete the “Fan/Turbine Balance Setup” screen per the following example. 7.1.6. Complete the Fan/Turbine Balance Setup. To complete the “Fan/Turbine Balance Setup” banner screen (as shown below), do the following: 7.1.6.1. In the “Name” field, enter a name for this setup using the keypad. (Refer to Chapter 3, “Using the Model 4040 Viper Analyzer”...
  • Page 125 Manual Viper 4040 User 7.1.6.6. 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 right arrow key to select from Actual, Class, or Both. Class weights are balance weights designed specifically for use with the engine.
  • Page 126 a result of the physical properties of some shafts. The Slow Roll RPM is used to identify what the actual signal is, and then these measured values are subtracted from all subsequent vibration measurements. 7.1.6.13. Move to the “Min Baln RPM:” (minimum balancing speed) field by using the [⇓] key.
  • Page 127 Manual Viper 4040 User If the speeds are to be entered based on a vibration survey and relative to the highest peak encountered, use the [⇒] key to toggle the answer to “Yes” in the “Entered RPM Relative to Peak:” field. Press the [⇓] key and a new field “Peak Speed:”...

  • Page 128: Define Class Weights

    7.1.7. Define Class Weights. The “Define Class Wts” banner screen (if class weight is selected in item 7.1.6.6) will be displayed. To define a class weight set, do the following: 7.1.7.1. 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.
  • Page 129 Manual Viper 4040 User 7.1.7.4. Use the [⇓] key to move to the “Placement” field. Use the [⇒] key to select from “Continuous” or “Spread”. Selecting “Continuous” will tell the analyzer to match the suggested solution as closely as possible while keeping the installed weights in consecutive positions.

  • Page 130: Balance Plane Information Setup

    7.1.8. Balance Plane Information Setup. To complete the “Balance Plane Information” setup screen(s), as shown below, do the following: 7-10 – Fan Balance 7...
  • Page 131 Manual Viper 4040 User 7.1.8.1. In the “Plane:” field, use the [⇒] key to select the identifying number for the first balance plane information. You will complete one of these information screens for each balance plane as defined in item 7.1.6.4 or 7.1.6.5 above. If you defined only one balance plane, you will only complete one balance information screen.
  • Page 132 7.1.8.6. Use the [⇓] key to move to the “RivetWt:” field. Use the numeric keypad to enter a value for the weight in grams or ounces (as defined in item 7.1.6.9 above) of any attaching hardware used to secure the balance weight to the balance plane. 7.1.8.7.
  • Page 133 Manual Viper 4040 User NOTE If more than one set of class weights is available for this balance plane, you must select, and use ONLY one of the class weight sets for the balance plane. DO NOT MIX CLASS WEIGHTS.

  • Page 134: Sensor Information Screen

    pickup and its triggering device (magnetic interrupter, reflective tape, etc.). With the fan in this position, use the 12:00 position as the “0” or “360 degrees” (index point) and measure opposite the direction of rotation to the angle of each position number and record that angle adjacent to the position number.
  • Page 135 Manual Viper 4040 User 7.1.10.3. Use the [⇒] key to select the “Tach Type:” The analyzer will process the signal of several tooth types, Shifted Tooth - Shfd Tth, High Tooth - Hi Tth, Low Tooth - Lo Tth, Missing Tooth - Mssg Tth, Adjustable Shifted Tooth - AjSh Tth, as well as tachometer generators and optical sensors.

  • Page 136: Define Fan/Turbine Balance Icfs

    7.1.10.9. Use the keypad to enter a name in the “Desc” field. The name should reflect the source, location, or other common attribute of this sensor input. Some suggestions are FRONT, REAR, VERT, HORIZ, or FFV, FFH. Use the [⇓] key to move to the next field.

  • Page 137: Engine Information Screen

    Manual Viper 4040 User “Names” key and select a name from the stored list of names. When all fields are complete per your requirements, press [ENTER] to accept and continue. 7.1.13. Engine Information. The Engine Information screen will be displayed where you may enter the optional information of Position, Engine S/N, Type, TSO, TSN, and Cyc.

  • Page 138: Fan/Turbine Balance Equipment Setup

    7.1.15. Fan/Turbine Balance Equipment Setup. 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. This indicates that power to the optical tachometer is currently not available to check alignment with the reflective target.

  • Page 139: Test Tach Power

    Manual Viper 4040 User 7.1.16. The Tach Power may also be checked from the Main Menu option “Test Tach Power” as shown below. Highlight the “Test Tach Power” item and press [ENTER] to access the “Tach Power” screen. 7.1.16.1. Each function key on the “Tach Power” screen corresponds to a Tach channel. By pressing the corresponding function key, power will be routed to that tach channel for testing or alignment purposes.

  • Page 140: Set Engine Speed

    On some engines, there may be detail or factory installed weights, which must not be removed. Check the LMM prior to removing weights if you are not familiar with this engine and the balancing procedures. Start the engine using normal procedures and allow the engine to warm up to normal operating temperatures.
  • Page 141 Manual Viper 4040 User 7.1.19. A data acquisition screen similar to the one shown below will be displayed. If you are unfamiliar with reading this screen, see Chapter 20 of this manual, “Reading Spectrum and Scales”. Allow the analyzer to average the acquired data until the indications are stable.

  • Page 142: Shut Down Engines

    7.1.20. Shut Down Engines. The screen will display the message “Shut Down engine(s) per flight manual instructions”. Press [F2] “Swap Job” to return directly to the Main Menu without rebooting the analyzer. Press the [F5] “Continue” key to acknowledge the message and shut down the engine(s). 7.1.21.
  • Page 143 Manual Viper 4040 User 7.1.22. The Fan/Turbine Suggested /Installed Wts screen will be displayed. If this is the first suggested weight screen, the weights will be test weights unless an established influence was entered in the setup. Notice at the top of the screen that the message “Remove Old Wts”...
  • Page 144 time, press the [F5] “Quit Job” and the job will be terminated. When all fields are completed per your requirements, press [ENTER] to accept and continue. 7.1.22.1. The “Edit Class Wt Set” screen is used to tell the analyzer that certain members of the class weight set are not available.
  • Page 145 Manual Viper 4040 User 7.1.8.10 above. This will help you place the weights in the correct position/hole/blade location. If you want to stop and exit this job without the option to resume at a later time, press the [F5] Quit Job and the job will be terminated.

  • Page 146: Fan Blade Optimizer

    7.2. Fan Blade Optimizer The Fan Blade Optimizer is an accessory program that is activated with the licensing of the Fan/Turbine Balance option in the analyzer. Fan Blade optimizer allows you to remove 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 147: Select Setup List

    Manual Viper 4040 User 7.2.2. Select Setup List. If a Blade Optimizer setup has previously been entered for the engine model you are currently working, you may select it from the Select, Setup List as illustrated in the screen sample below and proceed to step 7.2.4. If your engine model is not listed, press the [F1] “New”...
  • Page 148 7.2.3.3. In the Blade Num Style: Use the [⇒] key to select the numbering style you would prefer to use for this setup. The choices are <A – Z>, which will allow up to 26 blades, or <B1 – B99> which will allow up to 99 blades in a set. This numbering style is how you will identify each blade in the set for weight and later for location placement.

  • Page 149: Engine Information Screen

    Manual Viper 4040 User 7.2.5. The Engine Information screen, shown below will be displayed. This is a generic form used for various analyzer features. 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 150: Fan Blade Optimizer Result Screen

    satisfied that all entries are correct, press [ENTER] to accept your entries and continue. 7.2.7. A momentary screen reading “Stand-by, Optimizing” will be displayed along with a progression bar. When the progression bar is completely darkened, the process will be complete (about 30 seconds to one minute) and the Fan Blade Optimizer Result screen, shown below, will be displayed.
  • Page 151 Manual Viper 4040 User 7.2.8. Once the blade placement is complete, a vibration survey should be completed to insure the balance is acceptable. If the balance is not acceptable, proceed to the Fan/Turbine Balance section of this chapter. 7 Fan Balance – 7-31...
  • Page 152 8.1. TFE731 Performance EMS 8.1.1. Necessary Equipment. In order to use the EMS function of the Viper 4040 analyzer you must first have the EMS function active on your analyzer. There is no charge for the EMS function to be activated on the analyzer. If “TFE731 Performance - EMS”...

  • Page 153: Tfe731 Performance (Revision 3, Oct 2012)

    **Falcon 900EX, Falcon 50 10-320-0287 10-320-0273 (center engine) Lear 45 10-320-0288 **Falcon 900EX, Falcon 50 (side engines) 10-320-0331 Falcon 50 (Pre-Aegis Installation) 10-320-0275 *Falcon 900EX / Galaxy uJEDA to 8002-60 / -62 only N1 DEEC Comm 10-320-0274 Air Filter PT 2 8002-60 \ -62 N1 DEEC PT 2...

  • Page 154: Datalogger (Jeda)

    8.1.1.2. ACES AvTrend Software: ACES AvTrend is the companion software provided with the purchase of the Viper 4040 analyzer. AvTrend allows you to dump and store all Jobs completed with your Viper 4040 to your computer. This includes TFE731 performance calibration runs. AvTrend directs the logger files to the MEDRA Logger Directory where it is stored until the data is reduced by MEDRA.

  • Page 155: Analyzer Operation

    8002-62 N1computers. When collecting data from either the 8002-60 or 8002-62 computers, you must also use the N2 DEEC harness cable (10-320- 0239) in conjunction with the –60/-62 N1 DEEC comm cable, 10-320-0274. The two cables are necessary to: 1) control the computer ( -60/-62 N1 DEEC Comm Cable) and 2) to facilitate a faster acquisition speed (N2 DEEC breakout cable) from these older design N1 Computers.
  • Page 156 User Manual Viper 4040 8.1.2.3. From the EMS Menu, select “Start EMS Job” and press [ENTER]. 8.1.2.4. The analyzer will perform a communications check with the JEDA unit and the aircraft computer. If an error is encountered, the information screen below will be displayed.
  • Page 157 8.1.2.6. The Engine Select screen will be displayed. Use the [RIGHT ARROW] key to scroll through the list of available engine models. The list is restricted to those engine models that may be installed on the aircraft model selected in the Aircraft Selection screen above.
  • Page 158 User Manual Viper 4040 8.1.2.8. The Performance Calibration Setup screen, shown below, will be displayed. Complete this screen as follows: Customer Name: Use the analyzer keypad to enter a customer name. Press the [DOWN ARROW] key to move to the next field.
  • Page 159 Calib. Reason: Use the [RIGHT ARROW] key to scroll through the available selections for Calibration Reason. When the Reason you are conducting the calibration run is displayed, press the [DOWN ARROW] key to move to the next field. Engine Hours: Use the analyzer’s numeric keypad to enter the total Engine Hours.
  • Page 160 User Manual Viper 4040 8.1.2.10. If the engine you are running is EEC or N2 DEEC equipped, the information message below will be displayed. Press [F1] “Yes” to conduct the bleed valve check or no to continue without conducting the check. NOTE: If the engine is N1 DEEC equipped, this message will not be seen as the Bleed Valve Check is not an option with N1 DEEC equipped engines.
  • Page 161 8.1.2.12. 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 162 The message is to inform you that all power adjustment will be made automatically by the Viper 4040 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 163 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. The normal time required for acquiring each point is one minute.

  • Page 164: Information Screens

    User Manual Viper 4040 8.1.2.16. The Cockpit Readings screen, as shown in the example below, will be displayed. The fields immediately to the right of the N1, N2 and ITT names will be blank. Use the analyzer keypad to enter the values as indicated by the cockpit instruments.
  • Page 165 two possible answers “Yes” or “No” that may be selected by pressing either the [F1] or [F5] key, respectively. 8.1.3.2. 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 terminating the job.
  • Page 166 N1 DEEC computer and the operator. 8.1.3.5. The information screen below will be displayed each time the Viper 4040 is adjusting power for the next point. As stated in the message, you should not attempt to press any keys during this process. You should also not move the PLA, activate or deactivate any aircraft systems that would change the power setting of the engine.
  • Page 167 8.1.3.6. 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.

  • Page 168: Getting The Latest Software

    Viper 4040. You may download the latest application at this location. The site is updated during the first week of each month. The application software can also be delivered to you via E-mail or on CD in special cases.

  • Page 169: Vibration Spectrum Survey (Revision 3.01, Oct 2012)

    Chapter 9 Vibration Spectrum Survey (Revision 3.01, Oct 2012) “Vibration Spectrum Survey” is an analyzer function that 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 “Vibration Spectrum Survey Jobs” banner screen menu (also shown below).

  • Page 170: Start Job

    9.1. - Start Job Selecting “Start Job” from the “Vibration Spectrum Survey Jobs” banner screen allows you to begin a vibration spectrum survey. When you select this option, one of two screens will appear next depending on whether you are starting a job from scratch or an incomplete job still exists in the analyzer’s memory.
  • Page 171 User Manual Viper 4040 If another job was in progress but was not completed, the “Incomplete Job” banner screen will be displayed to inform you of this. This screen will also display a message prompting you to verify that you want to complete the in-progress job or that you want to ignore it and begin a completely new job.

  • Page 172: Spectra Setup

    You can use this information if appropriate or input your specific setup information using the keypad. (Refer to Chapter 3, “Using the Viper 4040 Analyzer” if you are unfamiliar with using the keypad.) The analyzer will display the “Spectra Setup” banner with default values as those shown in the figure below.
  • Page 173 User Manual Viper 4040 frequency units filed, and are separated by the word “to”.Using the keypad, enter the minimum frequency value, then press [⇒] key and enter the and maximum frequency value according to the requirements for the job. For instance, if the frequency of interest is 300 Hz, choose a minimum and maximum frequency that will place the 300 Hz in the center of the range.
  • Page 174 spectra will be displayed. Consult your equipment maintenance manual for specific requirements of a vibration survey or for analysis guidelines. Use the [⇒] key to select IPS (Inches Per Second), mm/sec (millimeters per second), cm/sec (centimeters per second), Mils (1/1000th of an inch), Microns (1/1000000th of a meter), g’s (equivalent gravities of acceleration), mbars (microbars), Pascals, Volts, cm/s/s (centimeters per second per second) or db.

  • Page 175: Edit Conditions

    User Manual Viper 4040 9.1.1.1.11. Use the [⇓] key to move to move to the “Desc” (description) field. If the Sensor field contains a sensor selection, use the keypad to enter a description for the sensor such as FRONT, REAR, or a clock position (12:00 for instance). The Desc fields are optional .The available field length is 7 characters.
  • Page 176 with the vibration input or to provide an entry field for reference where no actual speed input is available. This allows you to view amplitude, in the selected engineering units, relative to the speed of the machine or component being monitored. To complete the Speed option, do the following: 9.1.1.3.1.

  • Page 177: Limits

    User Manual Viper 4040 require a FACTOR of 60 (1 (pulse per-rev) X 60 Hz) to equal Revolutions per minute (RPM). Enter the factor using the keypad. 9.1.1.3.6. Repeat steps 9.1.1.3.2 through 9.1.1.3.5 for each of the channels required. When all fields are completed per your requirements, press the [ENTER] key to return to the Spectra Setup screen.

  • Page 178: Job Identification

    screen below illustrates an example of how the limit line is actually depicted on the analyzer screen. Press [ENTER] from the Spectra Setup screen to finish and save the setup. 9.1.2. - Job Identification The next screen displayed is the “Job Identification” banner screen shown in the following illustration.

  • Page 179: Engine Information

    User Manual Viper 4040 9.1.3. – Engine Information The “Engine Information” banner screen, shown below, will be displayed. Use the [⇒] key to select a position number for the engine being surveyed. A serial number (“S/N”), “Type” “TSO” (time since new), and “TSN” (time since new) field is available for both an engine and a propeller so that stored surveys can be traced by either component of the powertrain system, where applicable.

  • Page 180: Microphone Calibration

    9.1.4. – Microphone Calibration If you have selected to gather data using a microphone, the “Start Engine” screen shown below will appear before data collection. You MUST calibrate the microphone before every use. Differences in temperature and pressure will affect the microphone readings if it is not properly calibrated.
  • Page 181 User Manual Viper 4040 9.1.4.3. 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 [ENTER] on the analyzer.
  • Page 182 9.1.4.5. As the channels are calibrated, an X will fill the brackets ([X]) indicating that data has been collected. When all channels are calibrated, press [BACKUP] to exit the calibration process and return to the “Start Engine” screen for the current job. Data collection from this point on is no different than with any other vibration sensor.

  • Page 183: Select Aircraft Condition

    User Manual Viper 4040 9.1.5. – Select Aircraft Condition The “Select Aircraft Condition” banner screen is displayed. The conditions are those defined in the “Edit Conditions” screen (see section 9.1.1.2 above). Use the [⇑] or [⇓] keys to select the condition you wish to collect. When your choice is highlighted, press [ENTER] to begin collecting data.
  • Page 184 Once any of these “F” key options are selected, both the screen and the corresponding “F” key functions change. With each selection, the “F” keys offer different options (e.g., Expand, Shrink, X scale) for viewing the spectra. The “F” key functions for viewing spectra are described in the following steps.
  • Page 185 User Manual Viper 4040 to the current position of the cursor only. The cursor can be moved along the X (horizontal) axis of the spectra by pressing the [⇐] or [⇒] keys. Hold down the key for large and rapid incremental changes. The value of the X-axis (frequency) and Y- axis (amplitude) will be displayed for the current position of the cursor.
  • Page 186 9.1.7.7. Pressing the [F1] “Expand” key will expand the X scale of the spectra, in effect enlarging the viewing area. You might think of this function as a “Zoom Out” feature. The center of the Expanded view will be the position of the cursor prior to pressing the [F1] key.

  • Page 187: Storing Data

    User Manual Viper 4040 9.1.7.12. Pressing the [F1] “Expand” key will expand the Y scale of the spectra, in effect enlarging the viewing area. You might think of this function as a “Zoom Out” feature. If the view is already at the maximum range of the specified Y scale range, no scaling change will occur.
  • Page 188 The “Select Aircraft Condition” banner screen is again displayed as shown in the following figure. Notice that the condition for which you just collected and stored data now has an “X” immediately to the left of the defined condition. This alerts the user that data has been collected and stored for this condition.

  • Page 189: Resume Job

    User Manual Viper 4040 It is also possible to quit the job without data being taken for all defined conditions by pressing the [F5] “Quit Job” key. You will not be able to resume this job at this point. You will be returned to the Vibration Spectrum Survey banner screen where you may Start a new job.

  • Page 190: Manage Jobs

    9.3. - Manage Jobs Selecting “Manage Jobs” from the “Vibration Spectrum Surveys” banner screen menu presents several sub-menu choices to choose from. These choices allow you to “manage” previously completed job data you have stored in the analyzer. 9.3.1. - Review Selecting the “Review”...

  • Page 191: Manage Setups

    User Manual Viper 4040 9.4. - Manage Setups Selecting “Manage Setups” from the “Vibration Spectrum Surveys” banner screen menu presents several sub-menu choices to choose from. These choices allow you to “manage” job setups you have stored previously in the analyzer.

  • Page 192: Overall Vibration Surveys (Revision 3.01, Oct 2012)

    Chapter 10 Overall Vibration Surveys (Revision 3.01, Oct 2012) “Overall Vibration Surveys” is an analyzer function that 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 “Overall Vibration Surveys” banner screen menu. Each of the listings on this banner screen menu is an option within the “Overall Vibration Surveys”...

  • Page 193: Start Job

    10.1. - Start Job Selecting “Start Job” from the “Overall Vibration Surveys” banner screen allows you to begin an overall 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 an incomplete job still exists in the analyzer’s memory.
  • Page 194 User Manual Viper 4040 If another job was in progress but was not completed, the “Incomplete Job” banner screen will be displayed to inform you of this. The analyzer will then display a message prompting you to verify that you want to complete the in-progress job or that you want to ignore it and begin a completely new job.

  • Page 195: Overall Vibration Setup

    You can use this information if appropriate or input your own specific setup information using the keypad. (Refer to Chapter 3, “Using the Viper 4040 Analyzer” if you are unfamiliar with using the keypad.) The analyzer will display the “Overall Vibration Setup”...
  • Page 196 User Manual Viper 4040 frequency units filed and separated by the word “to”.) Using the keypad, enter the minimum and maximum frequency values according to the requirements for the job. For instance, if the frequency of interest is 300 Hz, choose a minimum and maximum frequency that will place the 300 Hz in the center of the range.

  • Page 197: Conditions

    in differentiating the reading on one channel from another. The Channel A, B, C, and D descriptions likewise should be a description of your choosing which you and your co-workers easily understand, such as “Lateral,” “Vertical,” or “No. 1 Gen” and “No. 2 Gen”. All other fields are not optional and must be selected or filled in.

  • Page 198: Speeds

    User Manual Viper 4040 10.1.1.2.1. Use the [⇑] and [⇓] to move from field to field on this screen and the [⇒] and [⇐] keys to navigate within the field or toggle between selections. Make field entries in the fields using the keypad.

  • Page 199: Job Identification

    understood by all users of this setup. Use the analyzer keypad to input the description. For instance, if the input is in Hertz (cycles per second), the description might be Hz1. If the input is in a raw voltage, the input description might be DC2 indicating a Direct Current input on Channel 2.

  • Page 200: Engine Information

    User Manual Viper 4040 10.1.3. – 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. 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 201: Collecting Data

    a NORMAL CURSOR immediately at the highest displayed amplitude frequency. The [⇐] and [⇒] keys may also be used immediately to EXPAND or SHRINK the Y scale. 10.1.6. - Collecting Data When the data screen is displayed, you will also see one function box at the bottom of the screen (see following figure) corresponding to the position of the [F5] key.

  • Page 202: Resume Job

    User Manual Viper 4040 10.2. - Resume Job When you select “Resume Job” from the “Overall Vibration Surveys” banner screen menu, the “Incomplete Jobs” banner screen will be displayed. Incomplete jobs are listed by name, preceded by an asterisk. Select the job you wish to complete and the analyzer will return you to the point where the in-progress job was stopped, allowing you to complete it.

  • Page 203: Review

    10.3.1. - 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. When viewing is complete, press the [BACKUP] or [ENTER] key to exit the screen. 10.3.2.

  • Page 204: Manage Setups

    User Manual Viper 4040 10.4. - Manage Setups Selecting “Manage Setups” from the “Overall Vibration Surveys” banner screen menu presents several sub-menu choices to choose from. These choices allow you to “manage” job setups you have stored previously in the analyzer.
  • Page 205 Chapter 11 Transient Vibration Survey (Revision 3, Oct 2012) “Transient Vibration Survey” is an analyzer function that 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” banner screen menu. Each of the listings on this banner screen menu is an option within the “Transient Vibration Survey”...

  • Page 206: Transient Vibration Surveys (Revision 3, Oct 2012)

    11.1. - 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 207 User Manual Viper 4040 If another job was in progress but was not completed, the “Incomplete Job” banner screen will be displayed to inform you of this. The analyzer will then display a message prompting you to verify that you want to complete the in-progress job or that you want to ignore it and begin a completely new job.

  • Page 208: Transient Survey Setup

    You can use this information if appropriate or input your own specific setup information using the keypad. (Refer to Chapter 3, “Using the Viper 4040 Analyzer” if you are unfamiliar with using the keypad.) The analyzer will display the “Transient Survey Setup”...
  • Page 209 User Manual Viper 4040 desire a high pass frequency, such as 40 Hz, the minimum frequency field should reflect this as the minimum frequency of interest. 4. Use the [⇓] key to move to the maximum frequency field, immediately to the right of the word “to”...
  • Page 210 field indicates there will be no input to the Channel (A, B, C, or D) adjacent to the field where the word “None” appears. Your selection determines the engineering units in which the vibration spectra will be displayed. Each channel is independent of the other three so that the type of unit can vary between channels.

  • Page 211: Config

    User Manual Viper 4040 11.1.1.1. – Config The “Config” (which corresponds to the [F1] key) selection appears at the bottom left of the “Transient Survey Setup” banner screen. Press the [F1] key if you wish to define Conditions, Speeds, and Parameters for the survey. If you choose this option by pressing the [F1] “Config”...

  • Page 212: Speeds

    In the “Condition” column, use the analyzer keypad to enter a descriptive name for up to fifteen conditions. You may define up to fifteen individual points at which you collect and optionally store data. When defined, these conditions are stored with the setup and are accessed when the setup is selected and set into motion.
  • Page 213 User Manual Viper 4040 To define Speed inputs, do the following: Use the [⇑] and [⇓] keys to navigate the screen and input or select data using the keypad or the [⇒], and [⇐] keys respectively. In the “Measure” column, use the [⇒] or [⇐] key to select from Pulse S-H, Volts S, Pulse D-H, Volts D, Pulse S-L, Pulse D-L, or None indicating the tachometer input type for the tachometer input channel indicated.
  • Page 214 to define data collection parameters for the survey. If you choose this option, the following “Transient Parameters Setup” banner screen is displayed. To input information into the Transient Vibration Parameters screen, do the following. Use the [⇑] and [⇓] keys to navigate the screen and input or select data using the keypad or the [⇒] and [⇐] keys respectively.

  • Page 215: Plots

    User Manual Viper 4040 When fields are completed for all Parameters, press ENTER to return to the Transient Survey Setup screen. 11.1.1.4. – Plots The “Plots” (which corresponds to the [F4] key) selection appears at the bottom, second from the right function keys of the “Transient Survey Setup” banner screen. Press the [F4] key if you wish to define plots for display of the collected survey data.
  • Page 216 11.1.1.5.1. – 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 217 User Manual Viper 4040 To define spectra limits, do the following: 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. The letters A, B, C, and D are in reference to the input channel of the analyzer.

  • Page 218: Job Identification

    Move to the next column (Unit) and use the [⇒] and [⇐] keys to select the frequency unit. This selection will determine the frequency unit where lines will be drawn on the spectra relative to the x (frequency) axis specified in item 3 above. Move to the “Limit”...

  • Page 219: Start Engine

    User Manual Viper 4040 “Time Since New” and “Time Since Overhaul” are optional fields. When all fields are filled as required, press [ENTER] to continue. 11.1.4. – Start Engine Start the engine (or component) you are checking (generator, gearbox, etc.). When the component reaches normal operating conditions (speed, temp, etc.), press the [ENTER] key...
  • Page 220 use. Differences in temperature and pressure will affect the microphone readings if it is not properly calibrated. Follow the steps below to properly calibrate the microphone. Press the [F4] “Calib” to display a list of all channels which are currently configured to collect data with a microphone similar to the example below.
  • Page 221 User Manual Viper 4040 3. 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 [ENTER] on the analyzer.
  • Page 222 5. As the channels are calibrated, an X will fill the brackets ([X]) indicating that data has been collected. When all channels are calibrated, press [BACKUP] to exit the calibration process and return to the “Start Engine” screen for the current job. Data collection from this point on is no different than with any other vibration sensor.

  • Page 223: Select Aircraft Condition

    User Manual Viper 4040 11.1.6. – Select Aircraft Condition The “Select Aircraft Condition” banner screen is displayed. The conditions are those defined in the “Edit Conditions” screen (see section 11.1.1.1). Use the [⇑] or [⇓] keys to select the condition you wish to collect. When your choice is highlighted, press [ENTER] to begin collecting data.
  • Page 224 Once any of these “F” key options are selected, both the screen and the corresponding “F” key functions change. With each selection, the “F” keys offer different options (e.g., Expand, Shrink, X scale) for viewing the spectra. The “F” key functions for viewing spectra are described in the following steps.
  • Page 225 User Manual Viper 4040 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,” “Overall” and “Event” respectively. If no cursor is displayed when pressing this key, only the box nomenclature will change.
  • Page 226 above. 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 scale to the values specified in the setup. This is a quick and easy way to return all expanded and shrunken scales to that default value without the necessity of numerous keystrokes.

  • Page 227: Storing Data

    User Manual Viper 4040 [F1] “Options”, [F3] “View”, and [F5] “All” will return all available plots to the screen. The “F” keys will return to “Options”, “Spectra”, and “Event”. Pressing [F4] “Overall” will cause the screen to change from the spectra plot to the overall display as shown below.
  • Page 228 The “Select Aircraft Condition” banner screen is again displayed as shown in the following figure. Notice that the condition for which you just collected and stored data now has an “X” immediately to the left of the defined condition. This alerts the user that data has been collected and stored for this condition.

  • Page 229: Resume Job

    User Manual Viper 4040 From the “Select Condition” screen, to quit the job and return to the “Transient Vibration Surveys” banner screen, press [F5] for “Quit Job.” 11.2. - Resume Job When you select “Resume Job” from the “Transient Vibration Survey Jobs” banner screen menu, the “Incomplete Jobs”...

  • Page 230: Review

    11.3.1. - 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. When viewing is complete, press the [BACKUP] or [ENTER] key to exit the screen. 11.3.2.

  • Page 231: Manage Setups

    User Manual Viper 4040 11.4. - Manage Setups Selecting “Manage Setups” from the “Transient Vibration Survey Jobs” banner screen menu presents several sub-menu choices to choose from. These choices allow you to “manage” job setups you have stored previously in the analyzer.

  • Page 232: Select Setup For Remote Job

    selected job by pressing the [F1] key for “Yes,” or the [F5] key for “No.” We highly recommend you download the setup(s) for reference or permanent record prior to deleting them. Once deleted, the setups cannot be retrieved from the analyzer. 11.4.4.

  • Page 233: Monitor Spectrum (Revision 3, Oct 2012)

    Chapter 12 Monitor Spectrum (Revision 3, Oct 2012) “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.
  • Page 234 12.1.1.2. 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. 12.1.1.3. Use the [⇓] key to move down to the next field. Using the keypad, enter the determined minimum frequency in the “Min Frequency”...
  • Page 235 User Manual Viper 4040 12.1.1.6. Use the [⇓] key to move to the “Average Type” field. Select the average type by scrolling through the selections in the field using the [⇒] key until your selection is displayed. There are three available options, “Expon”. “Normal”...

  • Page 236: Speeds

    0.50, 1.00, 2.00, 5.00, 10.0, 20.0, 50.0, 60.0, 70.0, 80.0, 90.0, 100, 110, 120, 130, 140, 150, 200, 500, 1000, 2000 and 5000. This scale refers to the number of engineering units of vibration amplitude specified in the previous field. The full scale indicates the maximum vibration amplitude you expect to acquire or the maximum amplitude of interest.
  • Page 237 User Manual Viper 4040 NOTE Where selections vary between an “S” and a “D” suffix are necessary, the selection is dependent on whether the input is single ended (S) or differential (D). Where selections between an “L” and an “H” suffix are necessary, the selection is dependent on whether the required gain for the incoming signal is Low (L) or High (H).

  • Page 238: Monitor

    12.1.3. Monitor 12.1.3.1. Install the sensors and cables required for the task. 12.1.3.2. Start the component you are checking (engine, generator, etc.). When the component is at normal operating condition (speed, temp, etc.) press the [ENTER] key to begin acquiring data. When monitoring is complete, press [ENTER] again to stop data collection.
  • Page 239 Chapter 13 Monitor Magnitude & Clock (Revision 1, Aug 2007) “Monitor Magnitude and Clock” 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.

  • Page 240: Monitor Magnitude And Clock (Revision 1, Aug 2007)

    1. 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. 2. Use the [⇒] key to toggle between the selections in the “Tach Input” field. Toggle between selections using the [⇒] keys to select the tachometer-input channel to be monitored.
  • Page 241 User Manual Viper 4040 8. Use the [⇓] key to move down to the “Description” field. Enter a name from the keypad in the description field. The description field is optional. If you are only measuring one channel, leave this field blank.

  • Page 242: Monitor Magnitude And Phase (Revision 1, Aug 2007)

    Chapter 14 Monitor Magnitude and Phase (Revision 1, Aug 2007) “Monitor Magnitude and Phase” 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.
  • Page 243 3. Move down to the “Tach Type” field by using the [⇓] key. Use the [⇒] key to select the tachometer type you are using for the once-per-revolution input into the analyzer. 4. Use the [⇓] key to move to the “Vibration” field. The “Vibration” field determines the engineering units in which the amplitude, or “Y”...
  • Page 244 User Manual Viper 4040 amplitude of any specified limits as a minimum. If you do not expect amplitudes in excess of what would normally be experienced for the equipment application, set this field as low as possible while still allowing sufficient space to display the maximum limitations as stated above.

  • Page 245: Monitor Overall (Revision 2, Aug 2007)

    Chapter 15 Monitor Overall (Revision 2, Aug 2007) “Monitor Overall” vibration 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.
  • Page 246 15.1.1.3. Enter a name for the job in the optional “Name” field if desired using the keypad. (Refer to Chapter 3, “Using the Model 4040 Analyzer” if you are unfamiliar with using the keypad. Use the [⇓] key to move down to the next field. 15.1.1.4.
  • Page 247 User Manual Viper 4040 for specific requirements of a vibration survey or for analysis guidelines. Use the [⇐] or [⇒] keys to scroll through the selections in this field. The available selections are: G’s (equivalent gravities), IPS (Inches Per Second), mm/sec...

  • Page 248: Speeds

    from the keypad. This field is used as a description for the individual channel such as “Lat” and “Vert” or “Gearbox” and “Core.” 15.1.1.14. Repeat steps 15.1.1.12 through 15.1.1.13 for each of the channels you intend to use for this job. 15.1.2.

  • Page 249: Monitor

    User Manual Viper 4040 15.1.2.4. The “OFF/100%” column is used when the VOLTS selection is made in the “Measure” column described in paragraph 15.1.2.2 above. This field is used to enter the offset if measuring a DC voltage, or the frequency at 100% of component speed if measuring frequency in Hertz (Hz).

  • Page 250: Check Track (Revision 3, Oct 2012)

    Chapter 16 Check Track (Revision 3, Oct 2012) “Check Track” 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.
  • Page 251 1. Place the analyzer in the location it will be used. Install and connect the one-per-rev source to the TACH channel of choice. (You must use a single pickup or optical tach for the once-per-rev signal.) 2. Connect the integrated cable of the Model 550 TraX directly to the “AUX/COM”...
  • Page 252 User Manual Viper 4040 2. Use the [⇒] key to toggle between the two selections in the “Track Device” field, “TraX”, “Strobe” or “Tracker”. As shown in the figures above, the lower portion of the “Check Blade Track” banner screen then changes depending on the type of track device you selected.
  • Page 253 when acquiring blade data. (Refer to Chapter 3, “Using the VIPER” if you are unfamiliar with using the keypad.) NOTE The “Inches to Tip” field will ALWAYS be defined in inches. This field is independent of any units defined elsewhere in the configuration. 10.
  • Page 254 User Manual Viper 4040 If using the TraX - When you press [ENTER] to accept the configuration above, the TraX will automatically begin taking data. As long as the Tach and Ready lights continue to flash, the unit is actively collecting data. When the Tach and Ready lights extinguish, the “Check Track –...
  • Page 255 separate further. To return the targets to the stacked position, press the [F1] “Reset” key. To rotate the group of targets to another position for ease of viewing, press the [F2] “Rotate” key. When finished, press the [ENTER] key to exit back to the Main Menu banner screen.
  • Page 256 User Manual Viper 4040 the quality of data. The higher the number of gathered data packets, the better the data quality. If the number is below 75% of the number defined in the “No. of Rotations” line above, you may retake the track data by pressing [BACKUP], selecting the “Check Track”...

  • Page 257: Transfer Data With Pc (Revision 1, Aug 2007)

    Chapter 17 Transfer Data with PC (Revision 1, Aug 2007) “Transfer Data with PC” is accessed from the analyzer’s Main Menu banner screen. A description of each of the functions follows, along with the information required to complete the menu screens within the function, and the steps necessary to perform the functions. The “Transfer Data With PC via RS-232”...
  • Page 258 transferred to the PC when data is downloaded. When the setup is transferred back to the analyzer, the updated influence remains with it. Setups can also be downloaded directly from the ACES Systems web site at www.acessystems.com, then uploaded to the analyzer A user manual as well as help files accompanies the AvTrend software program.

  • Page 259: Miscellaneous Items (Revision 3.01, Oct 2012)

    Chapter 18 Miscellaneous Items (Revision 3.01, Oct 2012) 18.1. Miscellaneous Items The “Miscellaneous Items” banner menu screen contains several menu items, three of which are used for identification of the analyzer. The other items are user-accessible and editable items. All are described in the following sections.

  • Page 260: Setup Sensors

    18.1.1. - Setup Sensors The “Setup 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 reinput sensor data.
  • Page 261 User Manual Viper 4040 “Sensor Setup” screen and show the complete information currently in memory for the selected sensor. 18.1.1.1. – Add or Edit Sensor Names for some industry-standard sensors have already been preloaded into the analyzer at the factory and appear with a small padlock to the left of the name. The default sensor list cannot be edited or deleted.
  • Page 262 2. Select “Setup Sensors” from the “Miscellaneous Items” banner screen menu. 3. Select “Edit” from the “Manage Sensors” banner screen menu. NOTE To edit an existing unlocked sensor in the list, select it at this point, and proceed with step 5. For adding a new sensor, go to step 4.

  • Page 263: Set Date And Time

    User Manual Viper 4040 uses the reverse polarity and is set to “Yes”. If you do not know the polarity requirements of the sensor, call ACES Systems and ask for Customer Support. 10. The “Input Type:” is a toggle selection field. The two selections are “Single Ended” and “Differential”.
  • Page 264 1. Select “Miscellaneous Items” from the Main Menu banner screen. 2. Select “Set Date /Time” from the “Miscellaneous Items” banner screen menu. 3. Enter the time in a 24-hour format as follows in the “Time” field. Hour - Valid range is 1 through 24, followed by a “.” (Decimal) Minute - Valid range is 0 through 59, followed by a “.”...

  • Page 265: Set Power-Off Timeout

    User Manual Viper 4040 18.1.3. – Set Power-Off Timeout To set the Power-Off Timeout, do the following: 1. Select “Miscellaneous Items” from the Main Menu banner screen and press [ENTER]. 2. Select “Set Power-Off Timeout” from the Miscellaneous Items banner screen menu and press [ENTER].

  • Page 266: Set Job Count Limit

    18.1.4. – Set Job Count Limit You can limit the number of jobs the analyzer will store for each type of job. For example, if you institute a 10-job limit, the analyzer will store a maximum of 10 propeller balance jobs, 10 Main Rotor Balance Jobs, 10 Vibration Survey Jobs, 10 Transient Vibration Survey jobs, etc.

  • Page 267: Check Battery

    User Manual Viper 4040 18.1.5. – Check Battery The “Check Battery” function allows the user to check the remaining battery life prior to beginning a job. The current state of the battery is presented in a percentage of full charge remaining.

  • Page 268: Analyzer Information

    18.1.6. - Analyzer Information The “Analyzer Information” banner screen contains information about the analyzer and its owner. The information is entered into each individual analyzer at the factory at the time of purchase. This information is significant for two reasons. If your analyzer is ever stolen or lost, it can easily be identified by the information contained on this screen.
  • Page 269 User Manual Viper 4040 To access the “Analyzer Information” banner screen, do the following: 1. Select “Miscellaneous Items” from the Main Menu banner screen. Select “Analyzer Information” from the “Miscellaneous Items” banner screen menu. In addition to owner information, this screen displays the following information: Serial # - The serial number of the analyzer.

  • Page 270: Database Information

    18.1.7. – Database Information The “Database Information” selection will produce the “Database Information” banner screen. The screen is divided into two sections to accurately reflect the status of the two memory areas found in the Model 4040 Viper. The top half of the screen displays information about the “RAM Database”. This database stores most of the information recorded during Propeller Balance, Fan/Turbine Balance, Main and Tail Rotor Balance, and Vibration Survey Jobs.

  • Page 271: Erase Entire Database

    User Manual Viper 4040 Full, you must delete some of the Transient Vibration Survey Jobs to allow for proper data storage. In either case, the RAM Database or the Transient Storage, you will be prompted during the job or before the job if enough memory is not available to store the current job. This is an information (read only) screen and its contents cannot be altered by the user from within this screen.

  • Page 272: Bus Test

    software process that rebuilds the RAM database following the deletion of the corrupt data doesn't know what kind of corrupt object was deleted, because that information, being corrupt, is unreliable. As a result, any spectra taken for that job get left behind in the flash file system (FFS), where they occupy memory space, but are not accessible or useful in any way.

  • Page 273: Equipment And Accessory Setup And Troubleshooting

    Battery Specifications The Viper 4040 battery pack is a custom built 12V NiCd pack. The specifications of the battery pack are: ♦ Nominal 12V pack voltage.
  • Page 274 ♦ The custom pack is composed of 10 size C 1.2V cells. BATTERY LIFE/DISCHARGE When the battery pack is fully charged, the battery voltage is approximately 14V, which is considered above the 100% charge level. When the analyzer is used, the battery voltage will quickly drop (within the first 20-30 minutes of use) to 12.4V, which is approximately 60% indicated charge level.
  • Page 275 User Manual Viper 4040 CHARGING The most important guideline for charging is that no charger should be left connected to the analyzer for an indefinite amount of time. The charger can safely be used overnight (12-14 hours), but leaving it connected for longer periods can lead to overcharging, over heating, and reduced capacity effects.
  • Page 276 discharged, the discharge voltage is reduced compared to the original full discharge. This basically means that the original 4 hours of life, now reaches the re-charge/cutoff voltage after 3.5 hours. This makes the battery appear to “remember” the lower capacity of the shallow discharge. This phenomenon is REVERSIBLE. The battery can be restored to full capacity with a few full discharge-charge-reconditioning cycles as described above in the OVERCHARGING section.

  • Page 277: Cables

    User Manual Viper 4040 NOTE You must set the Power-Off Timeout option to “NO” in order to discharge the battery using this method. See chapter 18, “MISCELLANEOUS ITEMS” in this manual for making this setting. 3. Connect the unit to the charger for NO MORE than 14 hours.

  • Page 278: Lasetach

    fuselage (off the ground) with duct tape to correct this interference. Duct tape or wire ties are excellent for securing the cables. 19.3 - LASETACH® WARNING Never look directly into the laser aperture. Damage to the eye can occur. Don’t use the LASETACH® when the weather conditions include precipitation. A single drop of water on the aperture lens can dissipate or block the laser beam.

  • Page 279: Reflective Tape (3M Tape, Type 7610)

    User Manual Viper 4040 19.6. - Reflective Tape (3M Tape, Type 7610) Always thoroughly clean the area where the tape is to be applied. Using scissors or some other cutting tool, round off corners of the tape and be sure all edges are pressed down.

  • Page 280: Vibration Sensors

    19.7 - Vibration Sensor Do not drop the sensor. Although built for rugged use, most accelerometers and velocity sensors are susceptible to internal damage when dropped, especially on hard surfaces such as concrete ramps. Do not mount a sensor on a hot section of the engine until you are certain it will withstand the maximum amount of head being generated in that area.

  • Page 281: Troubleshooting Ground Loop Issues

    User Manual Viper 4040 19.10. – Troubleshooting Ground Loop Issues If ground loop problems are suspected, the offending connection can usually be tracked down by disconnecting analyzer connections one at a time to see if the problem goes away. Non-ACES cables may induce ground loops if shields/grounds are terminated incorrectly.

  • Page 282: Reading Spectrum And Scales (Revision 2, Oct 2012)

    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 Viper 4040 Analyzer. 20.1 - Reading the X and Y Plotted Vibration Spectrum A graphic spectrum display allows the user to investigate all aspects of a rotating component related to vibration.
  • Page 283 The scale of the “Y” axis, along the left vertical edge, displays the amplitude or strength of the component’s expended energy in the specified engineering units which in the figure above are presented as IPS, or Inches Per Second, of movement. 20.2 - Reading the Converging Vibration Indicator and Scale.
  • Page 284 User Manual Viper 4040 gust, aircraft movement or other external influences have caused the indications to be corrupted, press the [F1] key for “Reset.” This will clear the averaged data and begin a new averaging. When satisfied that the data is acceptable, press [ENTER] to stop the data collection and accept the averaging.

  • Page 285: Printing (Revision 3, Oct 2012)

    Chapter 21 Printing (Revision 3, Oct 2012) The Model 4040 Viper Analyzer does not allow printing directly from the analyzer. To print jobs, download to AvTrend and print them using AvTrend. This provides much more flexibility and detail. Specific instructions can be found in the AvTrend Silver User’s Manual, ACES P/N 75-900-4042.

  • Page 286: Specifications

    Chapter 22 Specifications Viper 4040 (Revision 3, Oct 2012) ACCURACY Vibration Amplitude +/-5%, 0-190 IPS with 20 mV per IPS sensor Frequency Range 0 -30K Hz per channel Tachometer Inputs +/- 0.01%, 150-32,000 RPM Phase resolution of 1 degree with accuracy of +/- 3 degrees repeatable to 1 degree.

Table of Contents