Rpx technologies Dynavibe gx series User manual

DynaVibe GX Series User

Manual

Software Version 1.13

Revised: May 2017

Doc: RPX-AXU-RP-GX2-113-A

www.rpxtech.com

DynaVibe GX Series User Manual

Table of Contents

1Getting Started ___________________________________________________________ 2

1.1 Using this Manual ________________________________________________________2

2Background Concepts ______________________________________________________ 2

2.1 Dynamic Balancing _______________________________________________________2

2.2 Spectral Analysis _________________________________________________________2

3Applications _____________________________________________________________ 4

3.1 Propeller Balancing _______________________________________________________4

3.2 Rotorcraft Track and Balance _______________________________________________5

3.3 Vibration Spectral Analysis _________________________________________________6

3.4 Turbine Vibration Surveys __________________________________________________7

4DynaVibe GX Operation ____________________________________________________ 8

4.1 Ports and Connections_____________________________________________________8

4.2 Accelerometer Ports ______________________________________________________8

4.3 SD Card Slot _____________________________________________________________8

4.4 Optical Tach and Accessory Port _____________________________________________9

4.5 USB Port ________________________________________________________________9

4.6 Keypad _________________________________________________________________9

4.7 Turning on the System____________________________________________________10

4.8 Home Screen ___________________________________________________________10

4.9 Mode Summary _________________________________________________________12

5Mode Specifics __________________________________________________________ 14

5.1 Settings Mode __________________________________________________________14

5.2 Measure Mode _________________________________________________________15

5.3 EZ Measure Mode _______________________________________________________17

5.4 AutoBalance Mode ______________________________________________________22

5.5 Spectrum Mode _________________________________________________________32

5.6 TotalVibe Mode _________________________________________________________34

5.7 VibeSurvey Mode (GX3 Only) ______________________________________________35

5.8 Williams Mode (GX3 Only) ________________________________________________38

5.9 Rotorcraft (GX3 Only) ____________________________________________________45

6System Maintenance _____________________________________________________ 54

6.1 Cleaning _______________________________________________________________54

6.2 Battery Replacement_____________________________________________________54

7Troubleshooting _________________________________________________________ 55

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Important Notice

Any system that distracts a pilot while operating an aircraft is a safety hazard.

During the balancing procedure, please use extreme caution. Be very careful

with cables and components, especially on pusher-type aircraft. ALWAYS

confirm the ignition is off before rotating the propeller, main rotor, or tail

rotor.

Areas of this manual will highlight some specific safety concerns while

operating the dynamic balancing system. Before using this system, review

and follow all safety instructions in this manual, the relevant application

note(s), and the aircraft manufacturer’s documentation.

This manual is for reference only and does not modify, replace, substitute for, or supersede official

regulations or the aircraft manufacturer’s instructions. There are risks and hazards associated with

modifications to aircraft and these modifications are potentially dangerous and could cause harm. RPX

Technologies, Inc. assumes no liability, either express or implied, in the use of this procedure.

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1Getting Started

1.1 Using this Manual

This document describes the general operation of the DynaVibe GX series of dynamic balancers

(including the GX2 and GX3). Some modes are only available on specific model variants and will be

marked accordingly, such as “GX3 Only”.

Because of the wide range of applications for this tool, use this manual in combination with one or

more DynaVibe application notes or aircraft maintenance manuals that describe the setup and usage

for specific applications.

2Background Concepts

2.1 Dynamic Balancing

A rotating mass will always have small imbalances and tolerance variations. On a fixed wing aircraft, for

example, the engine crank, spinner, propeller, propeller extension, and starter ring mass variations will

cause vibrations that propagate through the engine, airframe, instruments, and passengers.

Vibration can cause damage throughout the aircraft. For example, vibration can damage the crank

bearings, engine mounts, firewall, instrument panel, exhaust, air intake, and more. Vibration also

causes accelerated wear and fatigue on equipment and passengers. The negative effects of vibration

can be reduced by dynamically balancing the rotating assembly as a combined unit.

Dynamic balancing is accomplished by monitoring an accelerometer and an optical tachometer

attached to the aircraft. The dynamic balancer uses these sensors to monitor assembly movement,

rotational speed, and angular position as the assembly rotates. The balancer then quantifies the

vibration magnitude and phase angle. Based on this measured vibration magnitude and phase angle,

adding weight to the assembly at critical locations improves alignment of the center of mass to the

rotational axis, thereby reducing the vibration magnitude.

While not all vibration can be eliminated, any reduction in vibration will reduce physical damage and

passenger fatigue. Note that vibration from engine combustion, gear reductions, and accessories will

not be affected by dynamic balancing. These additional vibration components can be identified and

quantified using spectral analysis.

2.2 Spectral Analysis

Spectral analysis is a data processing technique that examines a broad range of frequencies

simultaneously. Unlike dynamic balancing, where the magnitude and phase of a single vibration

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frequency are determined, spectral analysis displays vibration magnitudes of a broad range of

frequencies on a graph.

For example, in a fixed-wing piston-engine-driven aircraft, vibrations from engine misfire, prop

imbalance, prop wash, imbalanced alternator, etc. will each occur at a different frequency and will be

shown as individual peaks on the spectral graph. When performing spectral analysis with the optical

tach installed, the source of each vibration peak can often be identified by comparing the ratio of the

peak’s frequency to the frequency measured by the optical tach. On a non-geared four-stroke airplane

engine with a two-blade propeller, the propeller assembly vibration will be at 1x, weak cylinders will be

at 1/2 x, prop wash will be at 2x, etc.

Refer to the sections below for more information on how to use the DynaVibe GX for spectral analysis

and how it applies to your applications. RPX application notes, such as RPX-AFA-PR-SPC-00 "Spectral

Analysis of Piston Engine Aircraft," provide additional information.

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3Applications

3.1 Propeller Balancing

Process Overview

Balancing is an iterative process of vibration measurement and mass adjustments.

To balance a propeller, first mount an accelerometer to the engine and an optical tach to the aircraft as

described in the application note(s) listed below, or as described by the aircraft manufacturer’s

maintenance procedure. The DynaVibe GX uses these sensors to measure the vibration magnitude and

phase angle.Based on these measurements and information from previous runs, the balancer

determines the location where dynamic balance weights need to be added or removed to balance the

assembly.

DynaVibe GX Modes to Use

The DynaVibe GX has three modes useful for balancing propellers:

AutoBalance (recommended): This is the generally recommended mode for balancing propellers. Not

only does it report vibration magnitude and phase angle in an easy-to-understand format (zero degrees

is up and angles are always measured in the clockwise direction), this mode also recommends specific

mass adjustments and “learns” from each run. This simplifies and accelerates the balancing process.

When finished, the AutoBalance mode also generates a report for documentation.

EZ Measure: EZ Measure provides less automation than AutoBalance. While it does give vibration

magnitude and phase angle in the same easy-to-understand format, it does not recommend mass

adjustments. This mode is used to manually walk through the balancing process, compare front-to-

back vibration magnitudes, and other applications where a quick reading is needed.

Measure: Measure mode gives raw vibration magnitude and phase angle measurements from one or

two accelerometer channels. In Measure mode, the phase angle is not compensated for the setup (see

the Measure mode section below for how to interpret the phase angle). Measure mode is useful for

someone who has experience with a DynaVibe classic or another balancer that gives uncompensated

vibration phase angle readings.

Spectrum (troubleshooting):Note that while propeller assembly imbalance is the most common cause

of aircraft vibration, prop balancing only balances the propeller assembly. If vibration is still present

after the propeller is balanced, then spectral analysis can help identify the source of vibration. Refer to

the spectral analysis section below for more information.

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Application Notes and Procedures

This manual is not intended to be a comprehensive guide to propeller balancing. For process details

please refer to the following documents:

•Application Note: RPX-AFA-PR-BAL-00 “Dynamic Propeller Balancing on Aircraft”

•Aircraft manufacturer’s maintenance manual (if a procedure is available)

3.2 Rotorcraft Track and Balance

Process Overview

Rotocraft track and balance procedures vary by rotorcraft type and manufacturer recommendations.

General overviews are provided in this document and in our application notes, but please refer to the

manufacturer’s maintenance manuals for the exact track and balance procedure for your aircraft.

In general, main rotor track and balance procedures start on the ground with an initial dynamic balance

and blade track. Once an initial track and balance is complete, the process is repeated in a hover, then

in forward flight.

Other rotating components, such as fans, shafts, and tail rotors, can also be balanced using the

DynaVibe GX.

DynaVibe GX Modes to Use

Note: When using published track and balance charts or procedures from manufacturer’s

maintenance manuals, use only Rotorcraft mode or Measure mode since these charts and procedures

require raw phase angle readings.

Rotorcraft Mode (recommended):Rotorcraft mode in the DynaVibe GX3 can be used with or without

the DynaTrack. However, Rotorcraft mode is the ONLY mode that uses the DynaTrack for optical blade

tracking.Rotorcraft mode first helps you set up the system, then allows several measurement

conditions to be taken back-to-back, such as hover and multiple forward flight speeds. Blade track and

up to two vibration measurements (i.e. vertical and/or lateral) are recorded simultaneously during each

data set acquisition. This comprehensive set of measurements can then be used to determine what

adjustments are needed between flights to track and balance the ship.

Measure:Measure mode can be used to take single vibration measurements on a rotating component

using either one accelerometer alone or two accelerometers simultaneously. Please refer to the

Measure description above in the Propeller Balancing section, as well as the Measure mode

instructions below in the mode descriptions for more information.

AutoBalance (exercise additional caution when used with rotorcraft): Although AutoBalance mode is

intended for propeller balance applications, it can be useful when balancing other rotating components

on the helicopter such as tail rotors. Keep in mind that the initial weight addition recommended by

the AutoBalance mode should NOT be used on non-propeller applications because the weight

recommendations are based on typical fixed-wing propeller/engine mass and are not appropriate for

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other applications. Installing excessive weight may damage the assembly and the aircraft.The user

must estimate the first trial weight addition based on the particular assembly being balanced when

using AutoBalance mode for non-propeller applications. A common initial estimate for the trial weight

is 0.1% of the overall rotating mass (0.001 x mass).

Spectrum:Spectrum mode can be used to determine the source of various vibrations in the ship. Since

the main-rotor, tail-rotor, engine fan, engine, weak cylinders, prop wash (e.g., 2-per-rev on a two-

bladed propeller), etc. all occur at unique frequencies, spectral analysis can be used to identify the

source and magnitude of each component.

Application Notes and Procedures

This manual is not intended to be a comprehensive track and balancing guide. For process details

please refer to the following:

•Refer to the rotorcraft manufacturer’s maintenance manual for specific procedures!

•Application Notes: Several application notes are available to provide guidance unique to each

type of helicopter. Some examples include:

oRPX-ARA-RB-R22-TB “Robinson R22 Track and Balance with the GX3”

oRPX-ARA-RB-R44-TB “Robinson R44 Track and Balance with the GX3”

oRPX-ARA-BE-206-TB “Bell 206 Track and Balance with the GX3”

Covers: Bell 206A, 206B3, 206 L1/L3/L4, OH-58 A/C

o(refer to www.rpxtech.com for more rotorcraft-specific application notes)

3.3 Vibration Spectral Analysis

Process Overview

Spectral analysis, often referred to as an FFT, is performed with a single accelerometer and optional

optical tach. Spectral analysis of the accelerometer signal results in a magnitude versus frequency plot

of the vibration signal. When combined with an optical tach signal, these frequencies can be

conveniently compared to the rotational frequency of a reference component, such as rotor, propeller,

or engine RPM. Since many vibration sources have frequencies that are fixed ratios to a reference RPM,

the source of each vibration peak can usually be determined.

DynaVibe GX Modes to Use

Spectrum (recommended):Spectrum mode is used for most spectral analysis with the exception of

turbine engine vibration surveys, which require a wider frequency range.

TotalVibe (related): TotalVibe mode displays a graph of total vibration versus RPM. Although not a

spectral mode, TotalVibe is often useful in applications that require spectral analysis when vibration

magnitudes change significantly with RPM.

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Application Notes and Procedures

•Application Note: RPX-AFA-PR-SPC-00 “Spectral Analysis of Piston Engine Aircraft”

•Application Note: RPX-ARA-PR-SPC-00 “Spectral Analysis of Rotorcraft”

3.4 Turbine Vibration Surveys

Process Overview

Vibration surveys are used to help verify turbine engine health. By monitoring a wide range of

frequencies (up to 20 kHz) it is often possible to detect component balance issues, damaged bearings,

and other turbine engine faults.

GX Modes to Use

VibeSurvey (GX3 Only):The VibeSurvey mode measures the high frequencies required for turbine

vibration surveys. Note that the 20 kHz accelerometer (part number A20M0AS) and cable are required

for VibeSurvey mode. These parts are available in the “Vibration Survey Accessory Kit.”

Williams (GX3 Only):The Williams mode, like VibeSurvey mode, measures the high frequencies

required for turbine vibration surveys. However, Williams mode is customized for use with turbines

manufactured by Williams International and applicable procedures. Note that the 20 kHz

accelerometer (part number A20M0AS) and cable are required for Williams mode. These parts are

available in the “Vibration Survey Accessory Kit.”

Application Notes and Procedures

•Refer to the engine manufacturer’s procedure and/or maintenance program specifications for

procedures that are unique to each engine and maintenance program.

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4DynaVibe GX Operation

4.1 Ports and Connections

Left Right

Accelerometers SD Card Optical Tach

& Accessories

USB

(Factory Only)

The DynaVibe GX ports are shown in the diagram above.

4.2 Accelerometer Ports

The left and right accelerometer inputs are on the left top face. The accelerometer cables are labeled

“L” and “R” near the connectors. These labels indicate the proper input channel that should be used

with each accelerometer so the factory calibration is matched to the correct accelerometer. When

using the DynaVibe, the left channel is primary and used for most modes, such as AutoBalance mode.

The right channel is used for secondary measurements when two accelerometers are needed to take

simultaneous measurements. For example, when using the Rotorcraft mode, use the left channel for

lateral measurements and right channel for vertical measurements. That will ensure that the sensor

positions match what the software is expecting.

4.3 SD Card Slot

The SD memory card slot is in the center of the top face. Screen shots (using the camera button),

reports, and CSV data files are saved to the SD card. The SD card is also used when upgrading the

DynaVibe GX. The SD card slot is spring-loaded. With the DynaVibe turned off, gently press in on the SD

card to eject it. The SD card must be inserted for system operation.

Do not remove the SD card while the unit is powered on.

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4.4 Optical Tach and Accessory Port

The large circular port on the top face is for the optical tach and accessories, such as the DynaTrack.

When not using the DynaTrack accessory, use this port for the optical tach. When using the DynaTrack,

plug the DynaTrack into the GX using this accessory port and then plug the optical tach into the

DynaTrack’s optical tach connector.

4.5 USB Port

The USB port is for factory use only.

4.6 Keypad

The DynaVibe GX has several features to allow rapid access to desired functions. There are the four

function keys along the top of the keypad that allow access to the modes available on the GX. Below

the function keys is a keypad that allows you to enter numbers and text.Some keys also have arrow

symbols indicating their use as directional and cursor keys. The <5> key has a check symbol <>

indicating its secondary function as the Select key.

Keypad

The three keys along the bottom of the keypad provide access to screen image capture, the Home

screen, and power functions.

The first key in the lower left position of the keypad has a camera icon and is used for screen capture; it

allows a user to take a snapshot of the current screen and save that image to the SD card. This is useful

in circumstances where you wish to capture data on the screen. (The Camera key also functions as the

decimal key when entering numeric data and as the period key when editing text.)

The Home key is in the center of the row and the graphic on the key resembles a small house. Home is

a shortcut to the Home screen from most screens and is useful for quickly switching modes. (The Home

key also functions as the zero key, <0>, when entering numeric data.)

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The third key on the right of the bottom row is the Power key. Press and hold Power for a few seconds

to turn the GX off. Press Power when the system is off to turn the system on.

4.7 Turning on the System

Turn on the DynaVibe GX by pressing the Power key in the lower right corner of the keypad; the

DynaVibe logo screen will appear for a few seconds. On initial use and when the system is not resuming

a mode, the Start-Up screen will appear after the logo screen. The Start-Up screen shows the DynaVibe

model type, software version, calibration due date, and serial number of the system.

Start-Up Screen

4.8 Home Screen

From the Start-Up screen, press the <F4> function key (under the “Next” soft key label) to open the

Home screen. Use the Home screen to start the system’s modes and view system status information. To

return to this screen from most other screens, press the Home key.

Tachometer

Alignment Indicator

Soft Menu

with Mode Icons

Battery

Indicator

Icon

Additional

Modes to

Right

Additional

Modes to

Left

Real-time

Clock

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Home Screen Components

Starting Modes

Press the function key directly below a “soft menu” mode icon to activate that mode. Most operations

on the DynaVibe GX will utilize the soft menus.

Real-Time Clock

The system’s real-time clock keeps track of the time to provide time-stamped reports. This helps the

operator keep a history of when the work was performed. Before use, verify that the real-time clock is

set to the local date and time. To change the date or time, see 5.1 “Settings Mode” on page 14.

Tachometer Alignment

The tachometer alignment indicator is useful when the back of the optical tach is not visible and the

tape needs to be aligned with the optical tach. The indicator shows “Tach: Aligned” when the optical

tach is aligned with the reflective tape or “Tach: --------” when not aligned.

Battery Icon

The battery indicator icon shows a graphical representation of the amount of battery life remaining.

Change the batteries if the battery icon shows less than two bars or when the “Low Battery” warning

appears during use.

Soft Menu

The soft menu along the bottom of the Home screen contains mode icons that match up with the

function keys (<F1> through <F4>). Press the corresponding function key to start a mode.

The “more” arrows indicates that there are additional modes available that are not currently shown.

Press <3> (scroll right arrow) to access any additional modes to the right of the current screen. Press

<1> (scroll left arrow) to access any additional modes to the left of the current screen. As shown below,

the additional modes will appear as the menu scrolls to the right. VibeSurvey, Williams, and Rotorcraft

modes only appear on the GX3.

Home Screen – Illustrated Across Multiple Screens to Show All Mode Icons

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4.9 Mode Summary

The DynaVibe GX family supports task-specific modes. Some modes are model-specific. The major

function of each DynaVibe mode is summarized in the following table:

Mode Name

Model

Purpose and Features

ALL

•Automated weight solutions supporting multiple runs (up to 8)

•Vibration magnitude and phase angle (with polar charting)

•Phase IS compensated for setup

•Save HTML report with weight additions, vibration phase angle and

magnitude, final spectrum, graphical summary, and run log

•Single accelerometer input (left channel)

ALL

•Vibration magnitude and phase angle (with polar charting)

•Phase IS compensated for setup

•No automated solutions

•Single or dual-channel accelerometer input

ALL

•Vibration magnitude and phase angle (with polar charting)

•Phase is NOT compensated for setup

•No automated solutions

•Single or dual-channel accelerometer input

•Phase angle representation compatible with most third-party procedures

ALL

•Spectrum analysis up to 24,000 RPM

•Velocity (IPS) or Acceleration (G) views (plotted vs. frequency)

•Harmonic markers

•Switchable between left and right accelerometer inputs

•Identify vibration sources based on frequency

ALL

•Acceleration (G) versus frequency with harmonic markers

•Sweep throttle to find high vibration RPM ranges

•Switchable between left and right accelerometer inputs

GX3

•Analyze high speed vibration up to 20 kHz

•Velocity and Acceleration views (plotted versus frequency)

•Configure up to three limit ranges (Velocity view)

•For use only with 20 kHz Accelerometer (available separately)

•Save spectra to CSV files on SD card

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Mode Name

Model

Purpose and Features

GX3

•Designed for use by Williams International Authorized Service Centers

•Analyze high speed vibration up to 20 kHz

•Velocity versus frequency with up to three limit ranges

•For use only with 20 kHz Accelerometer (available separately)

•Acquire multiple conditions and generate HTML reports

GX3

•Methods specific to rotorcraft track and balance procedures

•Supports measurements while on the ground, in a hover, and at varying

forward flight speeds

•Use with dual accelerometers and/or DynaTrack Blade Tracker

•Supports Push-to-Talk (PTT) input for single-user operation

ALL

•Browse screenshots on the SD Memory Card

ALL

•Change Date and Time

•Disable or Enable Auto Power Off (APO)

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5Mode Specifics

5.1 Settings Mode

Use the Settings mode to set the real-time clock’s date/time or adjust the Auto Power Off (APO)

function.

Press <3> (scroll right arrow) several times to scroll to the right-most mode icon on the Home screen.

Press the function key corresponding to the “Settings” entry to activate the Settings mode.

Settings

Press <F2> (“Set Clock”) to set the real-time clock to your local date and time. This will initiate a series

of input screens to set the year, month, day, a.m./p.m., hour, and minute.

If a value already has the correct setting, press <F4> (“Accept”) to leave it unchanged and move on to

the next setting. To change a value, press <F1> (“clear”) to erase the current value or press <F2> (“”)

to delete the rightmost character. Use the numeric keys to enter the new value. When “Accept” is

pressed for the minutes’ entry, the clock will be set to the time and date as specified. The seconds’ field

will be reset to 00.

APO is enabled by default each time the system is turned on and will allow the system to shut down

and conserve battery power when the system is idle. APO[X] indicates Auto Power Off is active and

the unit will shut down after a few minutes of inactivity (no button presses). Press <F3> to deactivate

APO and change the label to APO[ ] . However, if the unit is accidentally left on while APO is disabled

then the batteries will drain prematurely.

NOTE: VibeSurvey and Williams modes override the APO setting.

VibeSurvey increases the APO timeout to 15 minutes. Williams

mode disables APO.

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5.2 Measure Mode

Left

Accel.

Input

Right

Accel.

Input

Optical

Tach

Resume

After

Power Off

DynaTrack

Accessory

PTT

Switch

APO

(Auto Power Off)

Setting

Required:

Standard

(1 kHz)

Accel.

Optional:

Standard

(1 kHz)

Accel.

Required

Yes

Not

Supported

Optional

Yes:

Supports Global

APO Setting

Measure mode supports one or two channels of vibration analysis. It is a quick way to plot vibration

measurements from one or two channels simultaneously on a polar chart.

Measure mode generates raw vibration readings that are not compensated for sensor positions or the

direction of assembly rotation. Therefore, readings from Measure mode are compatible with many

adjustment charts and processes from other sources, such as maintenance manuals. This mode will

generate data equivalent to the DynaVibe Classic, showing magnitude and phase relative to the

accelerometer position when the assembly is aligned with the optical tach.

This mode requires that a standard DynaVibe accelerometer (1 kHz) is connected to the left input prior

to activating the mode. A second standard accelerometer may optionally be connected to the right

accelerometer input.

When using the Measure mode, the phase angle of maximum vibration is reported relative to the

accelerometer position. In other words, the accelerometer position defines 0°. The phase angle is

physically located, with the engine and ignition off, by aligning the reflective tape to the optical tach

then using the accelerometer as the zero-degree reference and measuring the reported angle in the

direction the assembly would rotate during operation. The phase angle typically indicates the heavy

location.

Measure Mode Description

Measure mode starts with a description screen as shown above. Press <F4> “Continue” to continue to

the live polar chart.

The Measure mode polar chart screen plots live accelerometer reading(s) in a polar chart on the left

and displays the tachometer and accelerometer readings on the right. In the following example screen,

the motor is rotating at 2232 RPM and two accelerometers are mounted at different angular positions.

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On the chart, the Left Channel accelerometer is labeled "1" and the Right Channel accelerometer is

labeled "2".

Measure Polar Chart

F1: Help Describes basic functions of the polar chart.

F3: Average Begins an averaging cycle before proceeding to the “Measurement Results”.

Since the averaging is a set number of rotations, the length of time to complete

the average depends on the RPM, but is typically 5 to 10 seconds. Averaging can

improve the accuracy of the magnitude and phase readings, especially at lower

magnitude vibration levels. “Average” can also be started by holding in the

optional PTT switch.

F4: Accept Proceeds to the “Measurements Results” screen using the readings.“Average”

(<F3>) should typically be used instead of “Accept” (<F4> or a short press of the

optional PTT switch).

The measurement results screen summarizes the final readings on the polar chart screen. Press <F1>

“Back” to return to the live polar chart or <F4> “Menu” to return to the Home screen.

Configuration Examples

•Propeller balancing is typically performed by using a single accelerometer at the front of the

engine.

•After balancing the propeller, Measure mode can be used to do a front-back survey of the

engine using both accelerometers simultaneously. When propeller balancing is complete, it is

possible that the back of the engine has residual imbalance. This can be caused by a number of

complex interactions and further troubleshooting may be necessary.

•Helicopter track and balance procedures typically use one or two accelerometers.

NOTE: In Measure mode, phase is NOT corrected for setup: the

accelerometer position defines 0° and angular degrees increase

in direction of rotation.

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5.3 EZ Measure Mode

Left

Accel.

Input

Right

Accel.

Input

Optical

Tach

Resume

After

Power Off

DynaTrack

Accessory

PTT

Switch

APO

(Auto Power Off)

Setting

Required:

Standard

(1 kHz)

Accel.

Optional:

Standard

(1 kHz)

Accel.

Required

Yes

Not

Supported

Optional

Yes:

Supports Global

APO Setting

EZ Measure mode can simplify interpretation of the phase angle by compensating the measurement for

sensor mounting locations.

EZ Measure Mode Description

Once configured, EZ Measure corrects for the tachometer position, accelerometer position, and

direction of rotation to provide vibration magnitude and location relative to 0° being at the 12 o'clock

(12:00) position.

EZ Measure Mode Setup - # of blades

The first step is to configure the number of blades on the propeller. Press the right arrow (<6>) to

increase the number of blades. Press the left arrow (<4>) to decrease the number of blades. Press

“Next” (<F3>) when the number of blades is correct.

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