Lafayette Instrument ACU100 User manual

Model ACU100 User Instructions
[email protected] . Phone: [phone]
Model ACU100
Lafayette Range of
Motion Inclinometer
User Instructions
3700 Sagamore Pkwy N
Lafayette, IN 47904 USA
Tel: [phone]
[email protected]
www.lafayetteinstrument.com
© 2023 by Lafayette Instrument Company, Inc. All Rights Reserved- Rel. 3.21.23

Lafayette Range of Motion Inclinometer
3700 Sagamore Pkwy N Lafayette, IN 47904 USA 2
Table of Contents
Features 2
Specications  3
Precautions 3
Charging 3
Function Buttons 4
Screens 5
Sample Exercises 9
Resets 10
Firmware Updates 10
Inclinometer Cleaning 10
FCC Compliance Statement 11
Symbol Glossary 12
Features
• Designed for high inter and intra instrument reproducibility
• Range of motion in three axis: left to right (L/R), front to back (F/B), and rotation (ROT)
• Data storage for up to 250 tests in on-board memory
• Storage of data on button press
• Measurement range 0-360 degrees
• Tone to indicate start and stop
• Microprocessor controlled
• Built-in stored data browsing capability
• Easy to read graphical LCD display
• Automaticshutoafter5minutesofinactivity
• Battery indicator on LCD display
• Interactive menus allowing users to select device options
• Battery powered: (1) rechargeable lithium-ion battery

Model ACU100 User Instructions
[email protected] . Phone: [phone]
Specications
• Size: 4.61” x 3.27” x 0.97” (11.7cm x 8.3cm x 2.46cm)
• Weight: 121.4 g
• Range: 0-360 degrees
• Accuracy: ± 1 % over full range in vertical axis, ± 2 % over full range in horizontal axis
• Resolution: 0.1 degrees
• Battery Life: 10 hrs powered on, 30 minutes after low battery condition
• Battery Capacity: 900 - 1200 mAh Lithium Ion Rechargeable Battery
• Charge Time: 80% charge => 1 hour / Full charge => 3 hours
• Data Storage Capacity: 250 tests
• 50 ms sample rate
Precautions
• Upon initial receipt of ROMI, charge device for a minimum of 2 hours.
• Whenperformingrepeatedtests,inconsistentplacementoftheROMIwilladverselyaectscores.
• Extremetemperature,especiallyheat,mayaectthevaluesobtained.
• Largemagneticeldscouldaectthecalibrationorreadings
• Care should be taken not to drop the ROMI.
• The plane of motion should be consistent and relative to the device
• This device uses a Lithium-Ion battery as a power source. It is recommended that the battery be
charged at least once every six months. Failure to periodically charge the battery may result in
battery damage or device malfunction.
Charging
The low battery indicator screen is shown when
the battery needs to be charged. The screen will be
displayedandthenthesystemwillpowero.This
screen will be displayed when the power button is
pressed until the unit is recharged via the USB-C
connector. The device should take about one (1)
hour to charge 80% of the capacity, or about three
(3) hours for a full charge.

Lafayette Range of Motion Inclinometer
3700 Sagamore Pkwy N Lafayette, IN 47904 USA 4
Function Buttons
TheROMIhasvefunctionbuttonsthatcontrolthemenusandallowtheselectionofoptionsand
settings.
1. POWER/MENU/SELECT Button: The Round MENU/SELECT button is located on the bottom
middle of the ROMI. This is the button used to power on the device. Holding the MENU/SELECT
buttonfor5secondswillpowerotheunit.Itisplacedforeasyaccessregardlessofrightorleft
hand operation. The MENU/SELECT allows you to enter into the Menu screen and select various
options within it.
2, 3. NAVIGATION Buttons: : While on the Test screen the NAVIGATION buttons are used to undo
a trial or delete a test. While in the Menu screen, the NAVIGATION buttons are used to navigate
the various menu screens.
4, 5. BASE buttons: On the Test screen the BASE buttons are used to START/STOP tests and SAVE
results when applicable. On the menu screen these buttons are used to return back one screen,
BACK,orreturntotheTestscreen,TEST.Thesebuttonscanbeippedforaspecicdexterityby
changing the button orientation in the OPTIONS menu.
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Model ACU100 User Instructions
[email protected] . Phone: [phone]
Screens
Test Screen
The Main Measurement Screen shows all measurement information that is being captured. This screen
is shown whenever a measurement is in progress.
1. Battery Indicator: Indicates the remaining capacity in the charge of the battery.
2. Angle Display: Displays the current angle read during a test or the last trial while not testing.
3. Wireless Communication Indicator: This character indicates when the wireless is enabled.
4. Time Display: This time is displayed and can be set manually or synced with a PC in the Options
Menu.
5. SoundIndicator:Indicateswhetherbeeperisonoroforthecurrenttest.
6. Test Number: Displays the test number while a test is being displayed.
7. Axis of Rotation: Displays the axis of the current test relative to the device.
• ROT: Rotation around the device
• F/B: Front to back orientation
• L/R: Left to right orientation
8. *SAVE: In this example, represents the label for the right BASE button. Save will save the current
test.
9. *DELETE: In this example, represents the label for the UP arrow button. Delete will remove all
current trials without saving.
10. *UNDO: In this example, represents the label for the DOWN arrow button. Undo will remove the
last trial without saving.
11. *START/STOP: In this example, represents the label for the left BASE button. Start will start a new
trial. Stop will stop the current trial and add it to the trial list.
12. Trial List: This window displays the trial number and the angle the trial was ended on.
6 4 5 3 1
2
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11* 10* 9* 8*
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* Indicates button mapping for option will change depending on chosen button orientation - set in
OPTIONS menu

Lafayette Range of Motion Inclinometer
3700 Sagamore Pkwy N Lafayette, IN 47904 USA 6
Dual Setup Menu Screen
The Dual Setup menu allows users to connect two (2)
devices together for dual inclinometry. Once selected
from the main menu, the device will scan for other
devices nearby. This could take 20-30 seconds. Once
thescanisnished,allfounddevicesaredisplayed
on the screen. Use the navigation buttons to select
the device to connect.
Once the main device connects to the companion
unit, the screen on the companion will display
“Connected To Peer Device”.
Once connected, navigate back the test menu on the
main device and run normal tests now using both
the main and companion units. The main device
dictates the orientation of the trial. When beginning
a test, the main device and companion unit should
start in the same orientation and plane. The main
device will automatically calculate the combined
angle and display it on the screen.
To disconnect the devices, select the Dual Setup
icon in the main menu. Once the devices are
disconnected from each other, they can be used
individually for single inclinometry.

Model ACU100 User Instructions
[email protected] . Phone: [phone]
Saved Data Menu Screen
The Saved Data menu allows users to manage tests
that have been saved in the internal memory.
Options Menu Screen
The Options menu allows user to customize the
setup of their unit.
• WIRELESS:Toggleson/othemodulefor
wireless connection.
• BACKLIGHT:Togglesunit’sbacklighton/o.
• SOUND:Togglesunit’ssoundon/o.
• BUTTON ORIENTATION: Switches the
functionality of the base buttons, allowing for
use in either hand.
• LOCK ANGLE: Changes the angle that locks the
device in its axis.
• DATE: Updates the ROMI system date.
• TIME: Updates the ROMI system time.

Lafayette Range of Motion Inclinometer
3700 Sagamore Pkwy N Lafayette, IN 47904 USA
Sensor Calibration
The sensor performs self-calibration, but the device
also monitors the current calibration status both
when the test window opens and at the beginning
of a trial. The calibration window is displayed
when the calibration status shows it is not fully
calibrated. The window displays three letters for
each sensor followed by the number representing
the calibration status (0-3) as shown here:
Accelerometer (A)
Ifthissensorneedscalibration,placethedevicein6dierentstablepositionsforaperiodoffew
seconds to allow the accelerometer to calibrate. Make sure that there is slow movement between
2 stable positions. The 6 stable positions could be in any direction, but make sure that the device is
lying at least once perpendicular to the x, y, and z axis.
Gyroscope (G)
If this sensor needs calibration, place the device in a single stable position for a period of few seconds
to allow the gyroscope to calibrate.
Magnetometer (M)
If this sensor needs calibration, make random movements (for example: writing the number ‘8’ in air)
until sensor is fully calibrated.
Calibration Values
0: Sensor is not calibrated
1: Sensor is partially calibrated
2: Sensor is partially calibrated
3: Sensor is fully calibrated
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Information Menu Screen
The Information menu provides a contact email and
various information about the ROMI.

Model ACU100 User Instructions
[email protected] . Phone: [phone]
Sample Exercises
Sample: Storing Multiple Data Readings
1. Hold inclinometer in natural, neutral position
2. Flexyourhand.Whenmaximumexhasbeenreachpresstheleftbasebutton.
3. Repeat steps 1-2 to store up to six measurement readings.
4. The Saved Data can be viewed by pressing the POWER/MENU/SELECT button
Sample: Cervical Lateral Bending - Single Inclinometer
Prepare Inclinometer
1. Power on device by pressing the POWER/MENU/SELECT button.
2. Position individual’s head in a neutral position.
3. Place device over calvarium.
Take Measurements
1. Press the left base button* to begin the test.
2. Ask individual to bend their head to the left.
3. When individual reaches maximum range of motion, press the left base
button* to store the maximum left cervical later bending angle.
4. Ask individual to return to neutral position.
5. Repeat measurement steps 2-4 three to six times to achieve validity criteria
of +/- 5 degrees or 10%.
6. Follow steps 1-4 to measure right cervical lateral bending.
Sample: View Data
1. To recall stored data, press the POWER/MENU/SELECT button to display
the Settings menu.
2. Press the UP arrow button to highlight the Saved Data icon and press the
POWER/MENU/SELECT button again to display the stored data options,
then press POWER/MENU/SELECT to choose OPEN SAVED TESTS.
3. Saved Data can be navigated using the UP and DOWN arrow buttons.
Pressing POWER/MENU/SELECT will display the highlighted Saved Data.
* Indicates button mapping for action will change depending on chosen button orientation - set in
OPTIONS menu
Left Lateral
Neutral
Right Lateral
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Lafayette Range of Motion Inclinometer
3700 Sagamore Pkwy N Lafayette, IN 47904 USA
Resets
To restore to factory defaults, press MENU/SELECT and navigate to the Information screen. Press and
hold MENU/SELECT then press the left base button consecutively until screen reads “Factory reset will
delete all tests and all settings”. Follow the prompts on screen until the screen reads “Factory reset
complete!”.
HardReset:Iftheinclinometerfreezespressdownarrowandtheuparrowuntiltheunitpowerso
and back on.
Firmware Updates
LafayetteInstrumentperiodicallyupdatesthermwareforselectproducts.Visitourwebsiteto
download our Firmware Updater software. The ROMI can be updated by plugging in the USB charger
intoyourcomputeranddownloadingthecurrentversionofthermwareviatheFirmwareUpdater.
Inclinometer Cleaning
Hard surfaces can be cleaned with a bleach-free sanitizing wipe. Alcohol wipes may also be used.
Cloth or foam surfaces can be cleaned with anti-bacterial soap and water and allowed to air dry. Care
must be taken to not allow water to penetrate the enclosure as damage to the circuit may occur.
Disclaimer: These cleaning instructions for Lafayette Instrument products are a recommendation of compatible
cleaning materials only. Product end users are responsible for instituting an appropriate cleaning regimen utilizing
best practices and techniques. Lafayette Instrument assumes no responsibility for the cleanliness or sanitation of the
products after initial use nor makes any claim that the use of the recommended cleaning materials mitigates all risk
of potential cross infection.
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