J-TECH Northstar Echo User manual

Your reliable source
for objective data
objective functional
testing systems
© 2018 JTECH Medical MN065_N
INTAKE EVALUATE ANALYZE REPORT

NORTHSTAR ECHO USER’S MANUAL
© 2018 JTECH Medical MN065_N
Northstar Echo Manual
Publicaon Informaon
© 2018 JTECH Medical All rights reserved. This manual is provided as a service to our customers, any other use
is strictly prohibited. This manual may not be reproduced by any means, physically or electronically, without
the express wrien consent of JTECH Medical.
Northstar Echo and JTECH Medical Northstar are trademarks of JTECH Medical Industries, Inc. Microso
and Windows are trademarks or registered trademarks of Microso Corporaon. VELCRO® is a registered
trademark of Velcro Industries B.V. CaviWipes is a registered trademark of Metrex Research.
JTECH Medical Industries, Inc.
7633 S Main
Midvale, UT 84047
United States of America
[phone]
[phone]
Fax [phone]
www.jtechmedical.com
Advena Ltd.
Tower Business Centre, 2nd Floor,
Tower Street, Swatar,
BKR 4013 Malta
0086

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C ontents
Graphic Symbol Denions ....................... 2
Convenons Used Throughout This Manual ......... 3
LED States ..................................... 4
Receiver LED states . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Device LED states............................. 4
Warnings and Nocaons ....................... 5
Waste Disposal ............................... 5
EMC Noce .................................. 6
Wireless informaon........................... 6
Declaraon of Conformity ...................... 6
Intended Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Indicaons/Contraindicaons for Use ............ 7
System Setup................................... 7
Inial Baery Charge.......................... 7
Charging Device Baeries ...................... 7
Baery Life.................................. 7
Displaying Device Baery Voltage ............... 7
Device Operaon ............................... 8
Features and Benets . . . . . . . . . . . . . . . . . . . . . . . . . 8
Available Upgrades ........................... 8
Wireless Receiver (9RF401) ....................... 8
Wireless Dual Inclinometers (9RF403, 9RF404) . . . . . . . 9
Wireless Muscle Tester (9RF405).................. 10
Wireless Grip (9RF406) .......................... 11
Wireless Algometer (9RF407) .................... 12
Wireless Goniometer (9RF408) ................... 13
Wireless Pinch Gauge (9RF409) ................... 14
Wireless Stac Force Gauge (9RF410).............. 15
Frequently Asked Quesons ..................... 17
Troubleshoong Your Devices .................... 18
Storage and Cleaning of Devices .................. 19
Storage .................................... 19
Cleaning, Disinfecon, and Sterilizaon .......... 19
Maintenance .................................. 20
Product Registraon............................ 20
Repair Policy .................................. 20
Customer Support ............................. 21
Support Policies.............................. 21
Hardware ................................. 21
Northstar Soware ......................... 21
Before Calling for Support ..................... 21
Product Return Policy ......................... 22
Hardware Limited Warranty ..................... 23
Technical Specicaons
for Wireless Receiver (9RF401) ................... 24
Technical Specicaons
for Wireless Dual Inclinometers (9RF403, 9RF404) ... 25
Technical Specicaons
for Wireless Muscle Tester (9RF405)............... 26
Technical Specicaons
for Wireless Grip (9RF406)....................... 27
Technical Specicaons
for Wireless Algometer (9RF407) ................. 28
Technical Specicaons
for Wireless Algometer End Test Switch (RF116) . . . . . 29
Technical Specicaons
for Wireless Goniometer (9RF408) ................ 30
Technical Specicaons
for Wireless Pinch Gauge (9RF409) ................ 31
Technical Specicaons
for Wireless Stac Force Gauge (9RF410) ........... 32
Technical Specicaons and Warnings for Stac Force
Gauge Accessories ............................. 33
Technical Specicaons for Power Supply (PW006) .. 35
Technical Specicaons for Power Supply (PW008) .. 36
EMC Guidance................................. 37

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Graphic Symbol Denions
Symbol Meaning
An ISO 7010-M002 symbol Consult Instrucons
An ISO 15223 symbol Keep Dry, do not immerse in water or other liquids
Informaon symbol
I P X N
An IEC 60529 symbol IPXN, N=0 no protecon against ingress of water.
N=1 protecon against vercally falling water drops
An ISO 7000-0434A symbol Cauon
An IEC 60417-5840 symbol Indicates type of protecon against electric shock:
Type B applied part
An IEC 60417-5140 symbol Non-Ionizing Radiaon
An ISO 15223 symbol Warning: devices are non sterile
FCC Logo Northstar Echo products comply with Part 15 of the FCC Rules
An IEC 60878 symbol Indicang Degree of protecon against electric shock:
Class 2 Electrical equipment
An ISO 15223 symbol Indicang upper and lower temperature limits
An ISO 15223 symbol Indicang upper and lower humidity limits
An ISO 15223 symbol Indicang upper and lower atmospheric pressure limits
0086
“Conformité Européenne”
(“European Conformity”)
Northstar Echo products meet the provisions of the Council Direcve
93/42/EEC
An EN 980 symbol Idenfying the Manufacturer
An EN 980 symbol Idenfying the Authorized Representave for European Communies
An IEC 60878 symbol Signifying Alternang Current
An IEC 60878 symbol Signifying Direct Current

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Convenons Used Throughout This Manual
The following convenons are used in the manual to describe the devices, and operaon:
• Calibraon - The process of using a known force or angle to adjust the device parameters so that any
arbitrary force or angle input can be accurately determined.
• CV - The coecient of variaon (CV) is dened as the rao of the standard deviaon (σ) to the mean (μ), or
in mathemacal terms, CV = σ / μ. In probability theory and stascs, CV serves as a normalized measure
of variability to help describe the relave scaer or spread of a data sample. A smaller CV suggests a higher
level of consistency. A calculated CV less than 15% (0.15) is oen used as an indicator of consistent eort by
subjects during biometric strength tests.
The Northstar soware calculates CV using populaon standard deviaon. Note that this diers from CV
calculated using the sample standard deviaon, which can give a very dierent result.
• Device - This refers to a JTECH Medical tesng device, used in conjuncon with the Northstar soware to
record test data.
• Exam - This term is used to refer to a group of tests performed with the same device.
• Repeon, or Rep - A single instance of measuring performance for a designated device.
• RF - Radio Frequency.
• ROM - Range of Moon.
• Side - Either le or right, noted as L and R, respecvely.
• Test - Used to refer to a group of repeons performed for one or more sides with a given device.
• Threshold - The minimum force or angle that must be exceeded to start or end a repeon. This is also the
minimum force or angle that can be reached before the repeon ends.
• Zero or Zero Calibraon or Set Zero - The process of determining the device parameters when no force or
angle is applied to the device.

NORTHSTAR ECHO USER’S MANUAL
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Receiver LED states Explanaon
O O, the Receiver is not powered
On The Receiver is powered.
Device LED states Explanaon
O O power state.
Solid GREEN
Device is indicang that the baery has completed charging.
Solid GREEN, blinking BLUE 1
me per second,

The device is plugged in, receiving power from an external source, and
the baery is acvely charging.
Alternang BLUE / GREEN
The baery is overheated (thermal fault) warning.
Solid ORANGE
Unknown baery status.
Blinking RED 10 mes per second

The device has a low baery and is awaing for a communicaon link
with the Receiver.
Solid RED
Baery is crically low (Less than 20 minutes remaining).
Blinking RED 5 mes per second
     Baery is dead. This happens on any aempt to turn the device on.
Blinking RED 1 me per second

The device has a low baery and acvely communicang with the
Receiver.
Solid RED blinking OFF 1 me per
second
The device has a low baery and is aempng to reestablish
communicaon with Receiver.
Blinking BLUE 1 me per second

The device is in tesng mode and acvely communicang with the
Receiver.
Solid BLUE blinking OFF 1 me
per second Waing to reestablish communicaon with the Receiver.
Blinking BLUE 10 mes per
second

The device is waing for a communicaon link with the Receiver.
LED States

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Warnings and Nocaons
Protecon against ingress of liquids: Not protected against ingress of liquids. Keep Dry, do not immerse in
water or autoclave any poron of Northstar Echo receiver, devices, or accessories.
Type of protecon against electric shock: Type B applied part.
Devices emit non-ionizing radiaon.
Warning: Devices are not sterile.
Warning: Northstar Echo devices should only be used by trained professionals.
Warning: No modicaon of equipment is allowed. Do not open the receiver, device, transceiver or receiver
housings. Opening of housings by anyone other than an authorized JTECH service representave will void your
warranty.
Warning: Changes, or modicaons, not expressly approved by JTECH Medical could void the user’s authority
to operate the equipment.
Warning: Use only a factory-supplied, medical-grade power supply cered to charge medical devices.
Use of another charger may result in electrical shock or equipment damage. It is not recommended that
you charge the devices by connecng them to a computer.
Warning: Northstar Echo devices are not intended for use while aached to the charger. Never aempt to
operate the device while it is connected to the charger as electrical shock or damage to the device may occur.
Warning: Northstar Echo devices have no user serviceable parts.
Warning: This device is not suitable for use in the presence of ammable anesthec mixture with air, or with
oxygen or nitrous oxide.
Warning: Follow all direcons as specied by the CaviWipe product being used. Allow devices to dry before
use.

Noce: Northstar Echo devices are precision medical devices and should be treated with care. Avoid dropping,
banging, or other impacts to the devices.

Noce: Use only within designated operang parameters, i.e. temperature and humidity limits.
Warning: Disconnue use of any product if skin irritaon develops.
Waste Disposal
Warning: Northstar Echo devices contain Lithium Polymer baeries. Do not dispose of any Northstar Echo
device in re.
Disposal Instrucons: Northstar Echo Devices are not known to contain any hazardous materials. Consult your
local waste management facility on proper disposal of solid waste. Recycling should be used where available.

NORTHSTAR ECHO USER’S MANUAL
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EMC Noce
The Northstar Echo wireless system includes a variety of devices containing a built-in radio frequency transceiver that transmits to,
and receives data from, the Northstar Echo receiver. For more informaon on EMC see appendix “EMC Guidance” on page 37.
WARNING: Medical Electrical Equipment needs special precauons regarding EMC and needs to be
installed and put into service according to the EMC informaon provided in this manual. Carefully read
the informaon contained in this secon.
WARNING: The use of portable and mobile RF equipment can aect the normal operaon of medical
electrical equipment.
WARNING: Making any modicaons or using any accessories not specically approved by JTECH
Medical may reduce immunity to electromagnec interference or increase electromagnec emissions.
WARNING: The Northstar Echo devices and receiver should not be used while stacked on, or adjacent
to, other electrical or medical electrical equipment. If stacked or adjacent use is necessary, all electrical
equipment should be observed to verify normal operaon.
Wireless informaon
The Northstar Echo devices and receiver transmit in a 2.4GHz wireless frequency.
Contains FCC ID: OUR-XBEE
Contains Model XBee-Radio, Canada IC: 4214A-XBEE
Japan ID: 005NYCA0378
This device complies with Part 15 of the FCC Rules. Operaon is subject to the following two condions:
(i) this device may not cause harmful interference and (ii) this device must accept any interference
received, including interference that may cause undesired operaon.
Declaraon of Conformity
These devices are:
Class I measuring medical devices per Annex IX of Council Direcve 93/42/EEC
Class I medical devices per CFR Title 21 Part 888 Subpart B
Class II medical devices per Schedule 1, Part 1 of SOR/98-282 of the Canadian Medical Devices Regulaons
These devices also meet the following Technical Standards, to which Conformity is declared:
IEC 60601-1
IEC 60601-1-2
These devices are designed and manufactured in a facility cered to the following internaonal standards:
ISO 13485 with Canadian Medical Devices Conformity Assessment System (CMDCAS)
Intended Use
The intended use of the Northstar Echo product line is to assist the clinician with establishing an objecve
assessment of a person’s physical strength, range of movement, and (with the Algometer) establishing pain
tolerance levels. The devices are intended to be used as non-invasive, non-surgical and transient devices. The
devices are indicated for use when objecve assessment of strength, range of moon, or pain tolerance is required.

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INTAKE EVALUATE ANALYZE REPORT
Indicaons/Contraindicaons for Use
The devices are indicated for use when objecve assessment of strength, range of moon, or pain tolerance is
required. The devices should not be used in the following circumstances: on or near the eyes, on or near fractures,
on or near open wounds, on or near burned ssue, with paents suering with severe osteoporosis, and for any
purpose other than indicated.
System Setup
Initial Battery Charge
Performing the required inial charge for your new device baeries is essenal before aempng to use them.
When not in use, Northstar Echo devices remain in a “power-o” state to conserve baery life. If not used, the
device can remain in the o-power state for several days without needing a recharge. However, if the device
has not been charged within 30 days, we recommend recharging the baery before use.
Warning: Northstar Echo devices should not be used for tesng while connected to the charger.
Warning: Use only a factory-supplied, medical-grade power supply cered to charge medical
devices. Use of another charger may result in electrical shock or equipment damage. It is not
recommended that you charge the devices by connecng them to a computer.
Noce: Device baeries should be fully charged before aempng to use them with your Northstar
Echo System. Each device must charge for at least four (4) connuous hours before its rst use.
Noce: Be careful not to drop devices while connected to the charger as it may cause damage to the
device.
Charging Device Batteries
1. Plug the baery charger daisy chain plug into the device charging jack. You can charge up to four
devices at a me. Place the device on a at surface or back in the case while it charges.
2. Plug the baery charger into a properly rated wall outlet. Baeries should be charged for four (4)
connuous hours each me you charge.
3. Once a device is charged, disconnect it from the baery charger.
4. Charge all devices with your system before establishing communicaons with your computer.
Battery Life
The Northstar Echo devices have rechargeable Lithium Polymer baeries. The devices are able to operate for
approximately eight (8) hours of connual use. In order to conserve baery life, the devices have an automac
shut-o, which will trigger aer 10 seconds of inacvity.
Displaying Device Battery Voltage
Follow the steps in the Northstar soware manual.

NORTHSTAR ECHO USER’S MANUAL
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Device Operaon
Aer inial charging is complete, we recommend you contact JTECH Medical to complete the soware
installaon and setup. Please consult your Soware User Guide for specic soware related setup
instrucons.
Features and Benefits
• The Northstar Echo system is a baery powered wireless tesng system, which allows for exibility and
mobility in tesng.
• Hands Free Wireless Tesng - no tethers or cables to interfere with tesng or clinic set up.
• Impact resistant PVC plasc housings.
• Ergonomic designs.
• Designed for tesng criteria for published research.
• Built-in long-life rechargeable Lithium Polymer baeries mean there is no need to replace baeries.
• Addional device specic Features and Benets can be found under the device specic secons.
Available Upgrades
In addion to adding devices, the following upgrade products are available:
Northstar Soware modules - For more informaon on upgrades, contact your JTECH Medical sales
representave or call JTECH Medical at [phone] or [phone].
Detachable Parts
USB Extension Cable (7WR001) – The USB Extension Cable is used to connect the USB
Receiver to a USB port on your computer.
For instrucons on operang the Northstar soware, please refer to the
Northstar soware manual.
Northstar Soware
Wireless Receiver (9RF401)
Used to send and receive wireless transmissions to/from Northstar
Echo devices.
Instrucons for using wireless receiver:
1. Connect the Wireless Receiver to the USB Extension Cable.
2. Connect the USB Extension Cable to an open USB port on your
computer.
For troubleshoong informaon, please see page 18.
For technical specicaons, please see page 24.

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Features and Benets
• Eliminates placement changes and repeat procedures.
• Provides recording of the Total Range of Moon, Upper Segment Extreme and Lower Segment Extreme for spine
range of moon measurements (vital data for AMA-based impairment rang).
• Features Dynamic, Stac, and Auto-rep tesng modes for the spine and extremies.
• Measure extremies with either dual or single inclinometry.
• Capable of simulated goniometry.
Wireless Dual Inclinometers (9RF403, 9RF404)
Used to convey funconal abilies concerning Range of Moon (ROM).
1. If using the alignment rails accessory, aach the alignment rail to the
inclinometer by seng the “Feet” of the inclinometer on top of one alignment
rail. Repeat for other inclinometer. To remove the alignment rail, grasp the
alignment rail and inclinometer in opposite hands and pull to separate.
2. If using VELCRO® straps, aach the VELCRO® strap to the subject and then aach
the back of the inclinometer to the VELCRO® strap using a slight twisng moon.
To remove the inclinometer from the VELCRO® strap, peel the inclinometer from
the VELCRO® strap and then remove the strap from the subject.
3. Push the “On” buon on the Inclinometer to enable communicaon with the
Northstar Receiver. If necessary, repeat this procedure for the other Inclinometer.
For instrucons on performing specic tests, please refer to the mulmedia
help system in the Northstar Soware.
For troubleshoong informaon, please see page 18.
For technical specicaons, please see page 25.
Correct moon
(9RF404) (9RF403)
Accessories
Incorrect moon
VELCRO® Straps
(AA 026) – The
VELCRO® straps can
be used for dynamic
range of moon
inclinometry tesng.
Comes in a set with
Small, Medium, and
Large straps.
Alignment Rails (8MH068) – The
Alignment Rails magnecally aach
to the Inclinometers for easy visual
conrmaon of alignment.
Wrist Lanyard (7AC006) – The Wrist Lanyard is
used to help prevent dropping devices when
carrying, or when performing some tests.

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Wireless Muscle Tester (9RF405)
Used to convey a subject’s ability to resist force for a given
muscle or muscle group. Also used for determining max force a
subject can exert.
1. Aach appropriate accessory to Muscle Tester by inserng
the metal sha on the accessory into the accessory
receptacle on the Muscle Tester. Note: A Flat Pad, or Curved
Pad must be used with the Muscle Tester.
2. Push the “On” buon on the Muscle Tester to enable
communicaon with the Northstar Receiver.
Wrist Lanyard (7AC006) – The Wrist
Lanyard is used to help prevent
dropping devices when carrying, or
when performing some tests.
Flat Pad (8AC008) – The at
pad can be used for exerng
force against at items.
Curved Pad (8AC009) – The
curved pad can be used for
exerng force against items
that are not completely at.
Muscle Tester Cradle (9AC001) –
The Muscle Tester Cradle provides
a stable plaorm to rest the muscle
tester.
Accessories
For instrucons on performing specic tests, please refer to the
mulmedia help system in the Northstar Soware.
For troubleshoong informaon, please see page 18 .
For technical specicaons, please see page 26.
Features and Benets
• Produces very stable make or break tests.
• Reduces “roll-over” and lng with a 2.4” high ergonomic design that ts in
the palm.
• Uses snap-in-place Quick ConnectTM system for changing accessory pads,
which is much faster than old-fashion screw-on methods.
• Measures up to 200 pounds for strong performers.
• Test protocols can be customized according to number of tests, starng
force, newtons/kilograms/pounds, test me and number of repeons.
• Axis CompensaonTM “smart” load cell technology. Maintains accuracy even
when force is applied o-center.

Wireless Grip (9RF406)
Used to convey funconal abilies concerning grip strength.
1. Aach the posionable handle on the appropriate rung of the Grip
gauge by placing the Y-end on the chosen rung, then rotang the
C-end to the opposing rung and pushing the quick lock spring over the
rung, locking the handle in place.
2. Push the “On” buon on the Grip to enable communicaon with the
Northstar Receiver.
For instrucons on performing specic tests, please refer to the
mulmedia help system in the Northstar Soware.
For troubleshoong informaon, please see page 18.
For technical specicaons, please see page 27.
Features and Benets
• Uses standard gauge for comparison to published norms.
• Helps determine consistency of eort in workers compensaon and
FCE exams.
• Measures up to 200 pounds for strong performers.
• Test protocols can be customized according to number of tests, starng
force, newtons/kilograms/pounds, test me and number of repeons.
• Axis CompensaonTM “smart” load cell technology. Maintains accuracy
even when force is applied o-center.Rung Posions
5432
1
Wrist Lanyard (7AC006) – The Wrist Lanyard is used to
help prevent dropping devices when carrying, or when
performing some tests.
Accessories
Grip Cable (9AK103) – The Grip Cable is used for aaching
weights to the Grip.
Grip Stand (8MH234) – The Grip Stand holds the grip
securely in a vercal posion for tesng on a table or desk.
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NORTHSTAR ECHO USER’S MANUAL
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 Noce: It is recommended not to use the Flat Pad with the Algometer for anything other than calibraon.
Improper use of the Flat pad could result in exceeding the force limits of the device. Exceeding the force limits
of the device can permanently damage the internal components of the Algometer.
Accessories
1.0cm2 Algometer Tip (8AC005) – The
1.0cm2 Algometer Tip conforms to
normave tesng.
Flat Pad (8AC008) – The at pad
is used for calibraon of the
algometer.
0.5cm2 Algometer Tip (8AC006) – The
0.5cm2 Algometer Tip can be used for
cervical tesng.
Finger Tip Adapter (8AC007) – The
Finger Tip Adapter converts the
Algometer for tesng individual
nger strength.
Wireless Algometer (9RF407)
Used to convey pain response and pressure threshold.
1. Aach appropriate accessory to Algometer by inserng the metal sha
on the accessory into the accessory receptacle on the Algometer.
Note: One of the Algometry Tips must be used with the Algometer.
2. Push the “On” buon on the Algometer to enable communicaon with
the Northstar Receiver.
For instrucons on performing specic tests, please refer to the mulmedia
help system in the Northstar Soware.
For troubleshoong informaon, please see page 18.
For technical specicaons, please see page 28.
Features and Benets
• Mulple p sizes for dierent tesng applicaons.
• Replaceable rubber ps.
• Use for both Algometry and Finger strength tesng.
• Measures up to 25 lb.
• Axis CompensaonTM “smart” load cell technology. Maintains accuracy even
when force is applied o-center.
Wrist Lanyard (7AC006) – The
Wrist Lanyard is used to help
prevent dropping devices when
carrying, or when performing
some tests.
Wireless Algometry End Test
Switch (RF116) – Used by
paents during pain response
or pressure threshold tests to
end the current test.

Wireless Goniometer (9RF408)
Used to convey funconal abilies concerning hand and extremity Range
of Moon (ROM).
1. If necessary, aach the Goniometer extension arms by aligning the
extension’s metal pins or holes with the metal pins or holes on the
Goniometer. Press straight down unl the extension makes contact
with the Goniometer arm.
2. If necessary, to remove the extension arms grasp the extension arm
near the metal pins and gently wiggle the extension as you pull it
away from the goniometer arm. Do not bend or twist the extension to
disengage as the extension may break.
3. Push the “On” buon on the Goniometer to enable communicaon
with the Northstar Receiver.
For instrucons on performing specic tests, please refer to the
mulmedia help system in the Northstar Soware.
For troubleshoong informaon, please see page 18.
For technical specicaons, please see page 30.
Features and Benets
• Extensions for large extremity alignment.
• Real-me Numerical Data
As the goniometer is opened and closed, the degrees of moon from
the neutral starng posion of the goniometer are displayed in
real-me in the soware test screen.
• Accommodates exion through hyperextension.
• Can be used for small digit Hand Range of Moon (ROM).
• Measure up to 210°.
Detachable Parts
Goniometer Extension arms (9AK113) – Aids in visual conrmaon of alignment, or in
aligning the Goniometer to extremies. Comes in a set of two (2) arms.
Wrist Lanyard (7AC006) – The Wrist Lanyard is used to help prevent dropping devices
when carrying, or when performing some tests.
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NORTHSTAR ECHO USER’S MANUAL
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14
Wireless Pinch Gauge (9RF409)
Used to convey funconal abilies concerning pinch strength.
1. Push the “On” buon on the Pinch Gauge to enable
communicaon with the Northstar Receiver.
For instrucons on performing specic tests, please refer to
the mulmedia help system in the Northstar Soware.
For troubleshoong informaon, please see page 18 .
For technical specicaons, please see page 31.
Wrist Lanyard (7AC006) – The Wrist Lanyard is used to help prevent dropping
devices when carrying, or when performing some tests.
Detachable Parts
Features and Benets
Pinch Dynamometer:
• Uses standard gauge for comparison to published norms.
• Helps determine consistency of eort in workers compensaon and FCE exams.
• Measures up to 50 pounds for very strong performers.
• Axis Compensaon
TM
“smart” load cell technology. Maintains accuracy even when force is applied o-center.

15
© 2018 JTECH Medical MN065_N
INTAKE EVALUATE ANALYZE REPORT
Wireless Stac Force Gauge (9RF410)
Used to convey funconal abilies concerning stac strength in a variety
of applicaons such as liing, pushing, or pulling, or to convey a subject’s
ability to resist force for a given muscle or muscle group.
1. Aach appropriate accessory to Stac Force Gauge by threading the
metal sha on the accessory into the accessory aachment receptacle
or force input receptacle on the Stac Force Gauge.
2. Push the “On” buon on the Stac Force Gauge to enable
communicaon with the Northstar Receiver.
For instrucons on performing specic tests, please refer to the
mulmedia help system in the Northstar Soware.
For troubleshoong informaon, please see page 18 .
For technical specicaons, please see page 32.
Features and Benets
• Measures up to 500 lbs.
• Six (6) dierent accessories to create the tests you want.
• Auto Direcon (push or pull) selecon aer rst rep.
• Determine weight or mass of objects.
• Axis Compensaon
TM
“smart” load cell technology. Maintains accuracy
even when force is applied o-center.
Accessories
T-Bar (9AC002) – The T-Bar is essenal for doing liing or pulling tests
that require the use of two hands. Aaches to the Accessory Aachment
receptacle.

NORTHSTAR ECHO USER’S MANUAL
© 2018 JTECH Medical MN065_N
16
Stac Force Gauge Accessories (Connued)
D-Handle (9AC003) – The D-Handle is the perfect choice for doing one-hand
lis or pulls. Aaches to the Accessory Aachment receptacle.
Hook w/Stud (741) – The hook aachment allows you to use virtually any
item for liing or pulling tests. Aaches to the Force Input receptacle.
Threaded Pad Adapter (8MH097) – Adapts the threaded Force Input
receptacle to allow the metal shas on the at or curved pads to be
inserted into the Stac Force Gauge.
Flat Pad (8AC008) – The at pad can be used for exerng force against at
items, or muscle tesng. Aaches to the Threaded Pad Adapter.
Curved Pad (8AC009) – The curved pad can be used for exerng force
against items that are not completely at, or muscle tesng. Aaches to the
Threaded Pad Adapter.
Oponal V-Slot (745) – The oponal V-Slot makes it easy to exert force
against the corner of walls or other structures for doing push tests. Aaches
to the Force input receptacle.
4” Push Disk (9AC004) – The 4” Push Disk can be used for exerng force
against at items. The Push Disk oers more surface area for pushing
acvies, and greater exibility for various tesng applicaons than the Flat
pad. Aaches to the Force Input receptacle.
12” Cable (9AC007) – The cable can be used for dierent liing, pushing or
pulling, or stac strength tests.
Oponal Long T-Bar (AC013) – The oponal Long T-Bar allows for wider
placement between hands when performing liing or pulling tests. Aaches
to the Accessory Aachment receptacle.

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© 2018 JTECH Medical MN065_N
INTAKE EVALUATE ANALYZE REPORT
Frequently Asked Quesons
The following secon is provided to help you with quesons about your Northstar Echo Wireless Funconal
Tesng System.
What happens if I take the device out of range during a test?
If the device is transming to the receiver when it moves out of range (beyond 3 meters), communicaons
for all acve devices can be lost and the data cannot be retrieved. To re-establish communicaons, move the
device back within the transmission range and restart the test.
Can my Northstar Echo receiver pick up signals from other devices like wireless phones or wireless
networks?
Wireless networks, cordless phones or other devices can potenally cause interference with your Northstar
Echo System. As a precauon, we recommend that you minimize their usage within the transmission range
of your Northstar Echo System.
Is there any other type of interference I need to worry about?
As with any radio transmission, high-powered electromagnec devices should be avoided. For example, you
should not operate your system near microwave ovens or X-ray machines.
Can I block the signal during tesng?
Unlike infrared systems, Northstar Echo is not based on line of sight, so standing between the device and the
receiver should not interfere with the signal, provided you are within the operaonal distance.
How do I know when the device’s baery is low?
See the device LED codes on page 4. Addionally, there is a “low baery” indicator in the soware.
How long do devices connue to operate aer the low power signal?
The amount of operaonal me aer the low power signal varies for each device, but approximately 20 minutes.
Can I use the device without fully charging it?
Yes. The device will funcon without a full charge, but the operaonal me will be signicantly reduced. You
should place the device back on the charger to completely charge the baery as soon as possible.
Warning: Northstar Echo devices are not intended for use while aached to the charger. Never aempt
to operate the device while it is connected to the charger as electrical shock or damage to the device
may occur.
Warning: Use only a factory-supplied, medical-grade power supply cered to charge medical devices.
Use of another charger may result in electrical shock or equipment damage. It is not recommended
that you charge the devices by connecng them to a computer.
How long do the baeries take to charge?
The inial charge may take up to six (6) connuous hours of charging to complete. The rst charge is
important as it can aect the amount of power the baery will hold. Subsequent charges should be
completed between four (4) to (6) hours, or unl the device indicates that charging is complete.

NORTHSTAR ECHO USER’S MANUAL
© 2018 JTECH Medical MN065_N
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What happens if I leave the device on the charger too long?
We have designed special circuitry to protect the device’s electronic components. Charging automacally
turns o between four (4) to six (6) hours, or when charging is complete. Devices should be le to charge
unl they indicate that they are done. As with any Lithium Polymer baery, leaving devices connected to
the charger for extended periods (e.g. weeks) can reduce the overall life of the baery. Leaving devices
connected over the weekend should not aect the life of the baeries.
What happens if my device does not recharge?
Because of the sensive electronics inside, Northstar Echo devices are not designed for baery replacement
in the eld. If a device fails to hold a charge, contact JTECH Medical Customer Service.
What are the current travel restricons for Echo Devices?
Current regulaons do not prohibit Echo Devices from being stored in carry-on or checked baggage. Since
the baeries are already installed safely in the devices, there are no FAA, TSA or DOT restricons on checking
Echo devices. If the devices are checked, they should be secured properly in the hard case to guard against
the device being turned on during transport.
More informaon and Frequently Asked Quesons are available for your JTECH Medical Northstar Echo devices
by vising our online support at hp://help.jtechmedical.com
Troubleshoong Your Devices
Problem Probable Cause Possible Soluon
Device does not appear to
respond to the charger. The
LED does not light.
Bad Connecon or
Inoperable Baery.
Check the USB daisy chain connecon to the
charger and the device. If the daisy chain
connecons appear to be good; remove all other
devices and try connecng the device to a dierent
USB connecon on the USB daisy chain. If the LED
does not light up aer 60 minutes, contact JTECH
Customer Service for repair opons.
The Enter buon will no longer
click when pressed.
Possible damaged switch. Please contact JTECH Support for repair opons.
Device LED blinks rapid RED
and then stops aer a few
seconds on any aempt to
turn the device on.
Dead baery Indicator. Charge the device for one complete cycle
(between 4 to 6 hours) and aempt to use it again.