BTS BTSWEMG2 Wireless EMG sensor for EMG system User Manual ERFNC 00782 16 FREEEMG 300 ENG v 4 0 3

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Document Description	ERFNC-00782-16 FREEEMG 300 User Manual ENG v.4.0.3
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Document Title	ERFNC-00782-16 FREEEMG 300 User Manual ENG v.4.0.3
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BTS FREEEMG
user manual
english
version 4.0.3
Document Number : ERFNC-00782-16
Published: June 2013
Copyright © 2010 - 2013 BTS SpA. All Rights Reserved.
BTS FREEEMG
contents
contents							
icons, symbols and acronyms					
radio regulation							
disposal (WEEE)						
intended use 							
regulatory label							
acquisition unit regulatory label				
EMG wireless probes regulatory label			
AUX wireless probes regulatory label			
BTS charger regulatory label				
BTS docking station regulatory label			
warnings
copyright
introduction 							
general description 					
case contents						
system components						
physical description 					
acquisition unit						
PDA (Personal Digital Assistant)				
wireless EMG probes					
wireless FSW/EGN probes (optional)			
on-off analysis (optional)					
electrogoniometers (optional)				
charger							
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docking station (optional)				
installation							
user PC minimum configuration 				
installation of the Wi-Fi interface				
description of the software on the user PC			
switching on BTS FREEEMG 300			
first connection						
connection check 					
correct data visualization check				
acquisition protocol						
fitting the patient						
guide to the use of onboard software				
initial screen 						
“Active” button 						
selecting the work mode					
description of the main bars and menu			
protocol							
probes setup						
digital oscilloscope (gane)		
digital oscilloscope (cross check)				
footswitches						
“Local” button: holter mode 				
“Remote” button: lab mode				
“Download” button					
“Config” button						
“Exit” button						
BTS FREEEMG 300 updating 					
updating the onboard software				
creating a backup image 		
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contents
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maintenance and cleaning					
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appendix A – technical specifications 				
wireless probes						
receiving unit						
BTS internal coding					
appendix B – environmental specifications			
appendix C – power supply and switch off				
appendix D – battery		
appendix E – declaration of conformity 				
appendix F – troubleshooting guide		
1708 error - Incorrect IP address or port set up 		
1709 error - Impossibility to connect to the unit		
backup restoring						
receiving unit hardware reset				
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icons, symbols and acronyms
Symbol in the instructions for the function.
The icon represents the information which requires special attention.
Symbol in the instructions for the function.
This icon makes reference to a more detailed discussion of the subject in
hand.
Symbol on the equipment:
The data appearing next to the manufacturer’s symbol refer to the place of
manufacture of the equipment itself.
Symbol on the equipment:
Attention, read the information in the users’ manual carefully before using
the equipment.
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icons, symbols and acronyms
Symbol on the equipment and in the users’ instructions.
Symbol for the separate disposal of electrical and electronic equipment, in
accordance with Directive 2002/96/CE (WEEE).
The equipment belongs to Group 8 (medical equipment).
In force in the nations of the European Union, Norway and Switzerland.
Symbol on the equipment:
The figure in the square indicates the insulation class and the part types
used. In accordance with Standard ISO 60601-1, the equipment has an
internal power supply and the parts used are type BF.
REF
Symbol on the equipment:
Symbol located next to the model number (ref. to catalogue).
SN
Symbol on the equipment:
Symbol located next to the series number on the equipment.
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icons, symbols and acronyms
BTS FREEEMG
Symbol on the equipment:
CE mark with the code of the Notified Body. The CE mark certifies that
the product conforms to the standards applicable in the member states of
the European Union (see Declaration of Conformity).
Symbol on the equipment:
CE mark with the code of the Notified Body. The CE mark certifies
that the product conforms to the Directive 99/05/EEC - R&TTE and
obtained the Expert Opinion by IMQ.
Symbol on the equipment:
The double square indicates that the product is a medical device of II
Class (In accordance with the law EN 60601-1).
Symbol on the equipment:
The “FCC” symbol refers to the Federal Communication Commission of
the USA. The device complies with the relevant regulations put forth by
the FCC as long as it is operated according to the instructions contained
in this manual and to all national and local regulations.
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icons, symbols and acronyms
Symbol on the equipment:
The symbol indicates that U.S. Federal law restricts this device to sale by or on
the order of a licensed healthcare practitioner.
Acronyms used in this manual:
AP
Access Point
PDA
Personal Digital Assistant
AU
Acquisition Unit
RU
Receiving Unit
EMG
Electromyography
SW
Workstation
FSW
Footswitch
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radio regulation
Radio equipment identification:
- EMG probes:
FCC ID: YQH-BTSWEMG2
IC: 9188A-BTSWEMG2
- FSWEGN probes:
FCC ID: YQH-BTSWAUX
IC: 9188A-BTSWAUX
- Acquisition Unit contains:
FCC ID: TFB-MATRIXLP
IC: 5969A-MATRIXLP
This device complies with part 15 of the FCC Rules. Operation is subject
to the following two conditions: (1) This device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
Modifications not expressly approved by BTS SpA could void the
user’s authority to operate the equipment under FCC rules.
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disposal (WEEE)
In disposing of the equipment observe the legal prescriptions.
In accordance with Directive 2002/96/CE (WEEE) all equipment supplied
after 13/08/2005 may not be disposed of in general domestic waste. This
equipment belongs to Category 8 (medical equipment) and is classified in
the Business-to-Business sector.
The symbol of the crossed out rubbish bin
indicates that the equipment must not be
disposed of in normal domestic waste.
The regulations for disposal may differ between
individual countries in the EU. In cases of doubt,
refer to the respective sales outlet.
This is a battery-powered equipment.
See Appendix D for information about the batteries used. Operate
and dispose of this equipment according to the instructions set in
the “warnings” section.
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intended use
This equipment is an instrument for the EMG surface analysis, classified
as medical equipment in accordance with European Directive 93/42/CE
(and its amendments).
The BTS FREEEMG 300 must always be used only for this purpose, by
qualified persons, in an environment suitable for the execution of EMG
analyses and respecting the prevailing regulations in the countries in which
it is being utilized.
U.S. Federal law restricts this device to sale by or on the order of
a licensed healthcare practitioner.
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regulatory label
Acquisition Unit Regulatory label
EMG Wireless Probes Regulatory label
Label on the probes:
Probe ID
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regulatory label
BTS FREEEMG
Label not on actual probes due to size constraints:
AUX Wireless Probes Regulatory label
Label on the probes:
Probe ID
Label not on actual probes due to size constraints:
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regulatory label
BTS Charger Regulatory label
9V
3A
BTS Docking Station Regulatory label
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9V
3A
3A
BTS FREEEMG
warnings
We recommend to carry out any kind of operation keeping
strictly to the security regulations contained in this manual. The
safety of the instrument cannot be guaranteed if these conditions
are not respected.
BTS FreeEMG 300 is a medical device (EU Directive 93/42/CE and its
amendments, including Directive 2007/47/CE) which use must be at all
times be supervised by qualified and authorized personnel, according to
the laws in force in the nation it is in use. The EMG probes are classified as
ETSI EN 300 440 “Receiver category 3” according to Directive R&TTE
99/5/EEC.
The results of the acquisitions must be assessed by people legally authorised
by national law, who possess the suitable necessary knowledge of anatomy
and muscular function.
The instrument must be used in a medical environment, since it has a high
level of sensitivity (measured voltage levels of between 1 microvolt and 6
millivolt).
The uses of the device for other purposes and with methodologies
different from of those indicated in this manual are not to be
considered congruent with the precise use of the device.
During the preparation of the patient, take particular care that the system’s
components do not impede in any way the normal movements of the
subject. Apply the probes only on undamaged skin.
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warnings
• Only use CE branded probes and hypoallergenic double-sided tape,
compatible with the usage on undamaged skin for brief periods of time.
• Periodically verify the integrity of the system and of its components.
• To not wet or dip in water the parts that make up the system.
No modification of this equipment is allowed.
• Only BTS S.p.A. authorized technicians may maintain and operate
servicing to the instrument. BTS S.p.A. cannot be held responsible
for system safety should the instrument be opened, repairs carried out,
third parties software be installed, or system components be replaced by
persons other than those authorized by BTS S.p.A.
• Users cannot change any software configuration (including O.S. and
CD writer software).
• In case the device accidentally falls, tear of the probes or other accidents
always address authorized technical support.
• Use only the provided power supply unit FW7363M/09 (FRIWO)
or the one provided by BTS S.p.A. for supplying docking station and
charger unit. If a different power supply unit is used, the compliance to
IEC 60601-1 is not ensured.
• Only original cables must be used, otherwise BTS S.p.A. cannot assure
the safety of the instrument. Should it be necessary to replace any part
of the system, only original BTS S.p.A. parts may be used.
In addition to the users’ instructions, the prescriptions regarding
accident prevention and technical regulations regarding
occupational safety must also be complied with. The appertaining
national regulations and standards of the country of use, with
regards prevention of accidents and environment, are an extension
of the users’ instructions.
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warnings
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• Make sure that the cables have been connected correctly. When
disconnecting cables, use the connectors and not the cables themselves
to unplug the connectors.
• Mains plug of external power supply unit is considered as disconnecting
device.
• Avoid connecting the probes to the charger with inverted polarity with
respect to that shown on the cover of the recharger – This could cause
irreparable damage to them.
• For a safe use and adequate maintenance of rechargeable batteries strictly
follow the instructions given in this manual. If rechargeable batteries
are used in such a way that is not the one specified by BTS S.p.A. the
shelf life, functionality and the integrity of the batteries is not ensured.
• ESD application to EGN probes, causes a loss of link to the device.
Temporary loss of function or performance which is recoverable with
operator action.
BTS FREEEMG 300 is a device that is able to function
COUNTINUOUSLY, this is of course limited by the battery
duration and by the memory available for the acquisition data
storing.
The device uses lithium ion battery. For the battery replacement
and disposal please contact the technical support. At any rate,
ensure that device component (i.e.) probes, receiving unit, …)
integrity is never compromised.
The information contained in this manual is subject to change
without notice and does not constitute product specifications or
any obligation on the part of BTS S.p.A.
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copyright
The software of the system described in this manual is supplied with the
“licence to use” contract. The software may be used or copied only as
stipulated under the terms of this contract.
No part of this manual may be copied or transmitted in any form or means,
electronic or mechanical, including photocopying, without prior written
permission from BTS S.p.A.
Unless otherwise specified, any reference to companies, names, data and
addresses used in the reproduction of the screens and the examples are
purely incidental, and has the sole purpose of illustrating the use of the
BTS product. All trademarks are registered by the respective owners.
This publication contains reserved information which is the
property of BTS S.p.A.
The recipient acknowledges that the illustrations and information
supplied in this manual shall not be made available to third parties
without explicit written agreement by BTS S.p.A.
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BTS FREEEMG
introduction
General description
BTS FREEEMG 300 is an indispensable instrument for laboratories
which are concerned with the study of muscular activity in the fields
of rehabilitation, sports medicine, ergonomics, clinical research, and
assessment of functional ability and muscular fatigue.
BTS FREEEMG 300 makes the selection of muscles, the setting of
duration and frequency of acquisition, amplification gain and the correct
positioning of electrodes, simple and rapid.
BTS FREEEMG 300 can be applied in research, sports, occupational
medicine, gnatology, neurology, and orthopaedics.
With the software tools available, BTS FREEEMG 300 becomes an
advanced diagnostic tool to evaluate neurological and orthopaedic
disorders, pharmacological therapy, progression of motor deficits, use
of ortheses, rehabilitative follow-up, and to optimize sports training
programmes,...
BTS FREEEMG 300 is applied with EMG-Analyzer the most complete
software solution for analyzing electromyographic signals. It includes
predefined templates for evaluations in the clinical, sports, and research
field: Jump, plyometrics, walking, fatigue analysis, isokinetic, etc...
BTS EMG-Analyzer also has an editor for creating elaboration protocols:
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BTS FREEEMG
introduction
thanks to an innovative object interface, that translates the biomechanical
analysis language into graphical form, the user can develop quickly and
effectively customized analysis protocols.
BTS FREEEMG 300 seamlessly integrates with BTS motion analysis
systems, through the SMART (and ELITE) dedicated software.
Case contents
Standard components:
• Receiving Unit
• Acquisition Unit
• HP iPAQ hx4700 Pocket PC
• Belts for attachment to patient
• Stylus (located in the Pocket PC)
Pocket PC
Acquisition Unit
• Probes Kit
• up to 16 wireless probes (identificative labels available in 4
different colors)
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introduction
BTS FREEEMG
• Probes Chargers:
• up to 2 “Charger” units:
each charger handles up
to 8 probes and 2 FSW/
EGN.
The second unit is included in the
standard kit only for FREEEMG with at least 12 probes, or
available as an option.
• The optional “Docking Station” version is also available
• Accessories
• USB-PDA cable
•AC adapter
• Access Point
• Set of disposable electrodes
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introduction
• Manuals
• BTS FREEEMG 300 user
manual complete of CD
Optional components:
• Footswitch Kit
• 2 FSW/EGN Wireless Probes
• 2 Connectors of 4 Switches
• 10 single Switches
• Fine-Wire Adaptor
• Fine-Wire Kit
• fixing set for Fine-Wire adaptor
• set of disposal Fine-Wire electrodes with applicator
• Electrogoniometer Kit
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• 1 FSW/EGN Wireless Probe
• 1 Connector			
• 1 Electrogoniometer
• Supplementary Receiving Unit
• Secure Digital
You will receive the instructions for use for other possible optional components not mentioned in this manual.
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system components
BTS FREEEMG 300 electromyograph consists of a receiving unit which
utilizes a PocketPC platform and wireless probes designed and developed
by BTS SpA.
Physical description
power button (on/off)
Compact Flash (CF) slot type II
Secure Digital (SD) slot
stylus pen
1 activesync connector
2 battery door lock (in lock position to
switch on BTS FREEEMG 300)
1 LED - WIFI (solid blue = WiFi Active)
2 LED - charging and notification indicators
(blinking amber = charging; solid amber = full charge)
3 VGA color display
4 antenna
5 service slot
6 grip
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wireless probes
system components
BTS FREEEMG
Acquisition unit
The acquisition unit consists of:
• a digital card
• a receiver card
• a plastic casing
• a guide for the PDA insertion.
The digital card is connected to the palmtop, via the Compact Flash port,
when this is made to slide in the proper guide.
When the acquisition unit is connected to the palmtop, the card
communicates, “describing” itself to the driver in operation and thereby
allowing the system to self-configure and to carry out a self-diagnosis.
In addition to serving as a Compact Flash interface the card allows control
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system components
of the receiver card and handles acquisition of data coming from the
probes.
The receiver card is comprised of 4 elements that act as coordinators
of the wireless connection network with the probes, thus managing
communications with the probes, both for activation and data acquisition.
The acquisition unit is able to handle:
• up to 16 probes, used for acquisition of the activity of the same
number of electromyographic signals
• up to 2 probes of 4 auxiliary channels for switch connection,
used for the basographic acquisition
• as an alternative to the EMG channels it is possible to acquire
up to 8 electrogoniometers (each EGN occupies 2 analogue
channels).
In particular, the following probe combinations are possible:
EGN
1-2
3-4
5-6
7-8
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EMG
up to 16 probes
up to 12 probes
up to 8 probes
up to 4 probes
FSW
2 probes of 4 switches
2 probes of 4 switches
2 probes of 4 switches
1 probe of 4 switches
system components
BTS FREEEMG
PDA (Personal Digital Assistant)
HP iPAQ hx4700 Pocket PC is based on
Microsoft® Windows®.
It uses the Intel® PXA270 processor and
the new transflective display VGATFT, 4”
with 64k colors, to provide exceptional
graphics power and performance to display
large dimension images at highest quality
resolution.
HP hx4700 is fitted with excellent expansion capacity (Compact Flash
Type II and SD slot) to provide more storage space and greater function
range.
64 MB of SDRAM and 128 MB of ROM memory allow a greater number
of programmes and files to be stored, while the 1800 mAh lithium ion
battery ensures longer uninterrupted use of the Pocket PC.
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BTS FREEEMG
system components
For further details please refer to the HP iPAQ hx4700 Pocket PC
Manual included.
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system components
Wireless EMG Probes
BTS FREEEMG 300 utilizes miniaturized probes with active electrodes
weighing less than 13 grams. The special design ensures maximum spacesaving and comfort for the patient who is free to move around without
obstacles.
The probes can be hooked on directly to the pre-gelled electrodes without
requiring additional fixing with plasters or double-sided tape. This together
with the total absence of cables enables a much faster patient preparation,
drastically reducing the time of each session.
Each receiving unit can control up to 16 probes, for a total therefore of
16 analysable muscles in a single exam (standard configuration with one
receiving unit).
mother electrode
LED
satellite electrode
mother electrode clip
satellite electrode clip
flexible cable
probe ID
Each probe consists of a mother electrode and a satellite electrode, each
fitted with a clip. The two parts, connected via a flexible cable, may be
positioned as needed by the user at adjustable distance (electrodes with
variable geometry).
In the mother electrode there are the A/D converter, the antenna and
the battery. In the satellite electrode there is the Signal Conditioning
(preamplifier and filter) and is reported the probe ID.
All probes are also equipped with a solid state memory buffer, to prevent
data loss for problems due to the Wi-Fi network or due to exceeding the
useful operating range.
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system components
Each probe is fitted with an LED indicating its state. The probes can be in
one of a number of different states:
• Charge: steady blue LED.
During the recharging phase the steady blue LED is on.
This phase occurs when the probes are connected to the charger
turned on, and the charge level is less than 90%.
When the charge level reaches 90% the led turns OFF.
Since, by connecting a probe to the charger on, it enters in “Deep
Sleep” mode, even while charging, the probe will be completely
passive and does not respond to any commands.
• Inactive: white LED which cyclically lights with a steady light
for a few seconds every 3 minutes.
In the “Inactive” mode the probes cannot be used directly by the
patient unit but are in constant standby to be activated by the
activation software. When the probe is inactive, it carries out a
scan of the radio frequencies: during the scan the white LED is
lit continuously.
• Active-Scanning: white LED which cyclically lights for a few
seconds.
In this mode the probe is searching for the receiving unit on
the channel assigned during the activation phase. At intervals of
about 1 minutes it carries out a scan of the frequencies of few
seconds. During the scan the white LED flashes quickly.
• Active-Connected: white LED which flashes slowly.
When the probe and the receiving unit establish a connection,
the white LED begins to pulse slowly: the probe is waiting for
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BTS FREEEMG
commands. If the connection is interrupted, the probe returns
to “Active-Scanning” mode and attempts to re-establish the
connection.
• Active-Capturing: white LED which lights and goes out at
regular intervals.
During acquisition the white LED flashes at regular intervals of
approximately one second. At the conclusion of the acquisition,
the probe returns to the “Active-Connected” condition. If
during the acquisition, connection to the receiver unit is lost,
the probe continues to acquire, storing the data locally for one
minute and at the same time scans the assigned channel trying
to reconnect to the receiving unit. If after one minute the scan
is unsuccessful, the probe returns to the “Active-Scanning”
condition interrupting the storage of data.
• Completely discharged or in “Deep Sleep” mode: LED is off.
If the probe is completely discharged the LED does not display
any flashing cycle and is off. The same happens when it is in
“Deep Sleep” mode (except during the recharging phase in
witch the led is steady blue).
The probes in “Deep Sleep” mode do not perform any
scan cycle, but are turned off. Is therefore guaranteed
energy savings.
To put the probe in “Deep Sleep” mode it is necessary to connect
them to the Charger switched on, or to put them in contact
with a magnet for half a second.
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BTS FREEEMG
system components
Before the next use is necessary to reactivate the
probes, putting them in contact with a magnet. After
this operation they will pass to “Inactive” mode.
The probes are charged by a dedicated charger to which the probes are
connected via their respective clips.
When the probes are in charge and the charger is turned on, they
are in “Deep Sleep” mode and all the LEDs are off. it is necessary
to reactivate the probes, prior to use them, using a magnet.
The EMG probes can be used also to acquire the EMG signal by means of
Fine-Wire electrodes.
With this aim, there are available, in option, adaptors allowing for the
connection with Fine-Wire electrodes. The EMG probes can be connected
to them using the clips. Each adaptor can be fixed to the subject by means
of proper elastics.
For these applications the acquisition frequency must be set on
4 KHz (the guidelines recommend for Fine-Wire electrodes an
acquisition frequency major or equal to 2 KHz).
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system components
BTS FREEEMG
Wireless FSW/EGN Probes (optional)
For collecting the on-off analysis signals coming from the Footswitch
or for collecting data from the Electrogoniometers (optional system
components) BTS FREEEMG 300 uses wireless probes which must be
connected to the FSW or EGN probes using a special connector.
The probe will work differently if used with one or the other
probe and will receive from the same receiving unit information
on its work modality during activation.
The probe consists of a single parallelepiped-shaped block.
The upper face has an ID tag characterized by a color (Green, Red, Yellow,
Blue) and a letter (A, B, C, D, E or F) and a status LED which operates
similar to that described for the EMG probes (see previous paragraph).
The two lateral faces have two connectors; the one on the ID tag side
serves to charge the probe, and a cable will be connected to this to enable
connection to the charger (Charger or Docking Station).
The one on the other side is for the probe connections (FSW or EGN).
Finally, the ID identifier of the probe is on the bottom left corner of the
back side.
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system components
On-off analysis (optional)
The footswitches are useful in defining the contact points during the
contact phases of deambulation.
The footswitches consist of a resistive membrane, (FSR technology), of
diameter 18 mm and thickness less than 0.5 mm, expressly designed for
applications in the analysis of movement.
The compact size of the instrument permits a maximum of flexibility in
positioning on the patient’s foot.
For applications other than gait analysis, there are available on request
smaller diameter (8 mm) switch probes (appliable, for example, to the
finger), and square (useful for tapping tests), 44 mm x 44 mm.
BTS FREEEMG 300 permits up to 8 basographic zones to be measured,
through 2 connectors from 4 single switches (usually right and left side)
that are connected to the two FSW/EGN wireless probes.
The footswitch channels are supplementary to the 16
electromyographic channels.
Refer to § “Acquisition unit” for the list of probe combinations
possible in case of acquisition also with EGN.
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system components
BTS FREEEMG
Electrogoniometers (optional)
The electrogoniometer is an easy to use device that allows the measurement
of joint angle progress over time.
There are primarily two types of electrogoniometers: the potentiometer
and the strain gauge. BTS FREEEMG 300 uses the strain gauge
electrogoniometer of Biometrics LTD.
There are single-axle models for the neck (axial rotation) and the forearm
(prone-supination) and biaxial models for other main joints: wrist, elbow,
knee, ankle, hip and back.
The strain gauge electrogoniometers are made up of two sensors, connected
to each other, that are fixed to the bone segments involved in the joint to
value.
The measure of the angle is provided by the relative angle between the
axes of the two sensors and, unlike the potentiometric electrogoniometers,
it doesn’t depend on the linear slidings in which the two extremities can
incur.
Each electrogoniometer is connected to a FSW/EGN wireless probe
using the appropriate connector. Each receiving unit can handle up to 8
electrogoniometers.
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BTS FREEEMG
system components
The electrogoniometer channels are not supplementary to the 16
electromyographic channels, but each electrogoniometer used
engages 2 EMG channels. Refer to § “Acquisition unit” for the
detailed list of probe combinations possible.
Charger
The Charger, included with the product, charges the FREEEMG probes.
The Charger can simultaneously charge 8 EMG probes and 2 FSW/EGN
probes.
Two units are provided for systems with more than 12 probes.
More units can be connected in series for simultaneous power
supply through the same AC adapter, using the cable included.
The EMG probes are connected to the charger using the same clips that
normally collect the EMG signal, while the FSW/EGN probes connect to
the charger using the special connector as shown in the figure below:
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system components
BTS FREEEMG
For correct connection simply follow the outline of the probes shown on
the base of the Charger:
The Charger comes with an output short circuit protection
system also in case of reversed recharging poles. At any rate, poles
connected incorrectly will not recharge.
To recharge connect all the probes that you would like to charge to the
Charger (follow the instructions described above) and connect the AC/
DC adaptor to the mains and turn on the switch located on the rear panel.
When the Charger is properly connected to the mains and has been turned
on, the status LED “Power” will show a steady GREEN light.
The charging status of the EMG probes and of the FSW/EGN probes is
indicated by the respective status LED (see § “Wireless EMG Probes” and
“Wireless FSW/EGN Probes”).
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Note that inserting the EMG probes into the Charger when it is
on, these come in “Deep Sleep” mode. It is necessary to reactivate
these probes, prior to use them, using a magnet. After this
operation they will pass to “Inactive” mode. While, connecting
the FSW/EGN probes to the Charger (connected to the mains
and turned on) if they are charged less than 90% they will be
automatically reset and will pass to the “Inactive” mode.
To proceed with another acquisitions it is necessary to repeat the
activation procedure.
Docking Station (optional)
As in alternative to the Charger an optional Docking Station is available.
This unit has additional features that are described below.
Each Docking Station can simultaneously charge 8 EMG probes and 2
FSW/EGN probes.
Unlike the standard Charger, each Docking Station will have to
be powered separately; therefore two units cannot be connected in
series for contemporary power supply.
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The EMG probes are connected to the charger using the clips for collecting
the electromyographic signal, while the FSW/EGN probes connect to the
charger using the special connector.
For correct positioning simply follow the outline shown on the base of the
Docking Station as shown in the following figure:
The Docking Station comes with an output short circuit protection
system also in case of reversed recharging poles.
At any rate, poles connected incorrectly will not recharge.
The Docking Station also allows for recharging the receiving unit by
connecting it with the relevant cable (USB/PDA cable) in the USB port
located on the rear panel.
It should be noted that you can use the Docking Station to
recharge the PDA only when by pressing the power button the
palmtop turns on.
Otherwise you will need to recharge the PDA with the supplied
HP by connecting it to the network. In order to go back and
recharge using the Docking Station, simply charge with the
power supply unit for about one minute, and then check that it is
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sufficiently charged by unplugging it from the power supply unit
and turning it off and then back on.
There are two ways to recharge the probes:
• using the medical power supply unit from the network
• using the internal battery
The first method involves the connection of the Docking Station by means
of the AC/DC adaptor to the mains. In this case not only the connected
probes will be charged but also the internal battery of the unit itself.
The second method lets you recharge the probes and/or the receiving
unit when you are not at the laboratory and a mains power network is
unavailable. In particular with the battery fully charged you can fully
recharge all the probes and receiving unit or fully charge the probes only
twice.
To recharge a probe simply connect it as described in the method above.
Connection to the Docking Station resets the probe if charged
less than 90%, to use it again for acquisitions you must repeat the
activation procedure.
The Docking System is equipped with an “Activate” button and 3 status
LEDs: “Charge”, “Battery” and “Power”.
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The “Activate” button allows immediate activation of the FSW/EGN
probes connected to the Docking Station and selected to activate in the
receiving unit (see § “Active” Button); you do not need to wait for the
software cycle of the “inactive” state probe to be complete. By pressing the
button the FSW/EGN probe will immediately scan the radio frequencies
and enter immediately in communication with the receiving unit.
The “Charge” LED gives information on the probes charging and consists
of a BLUE light which signals the following:
• BLUE LED “breathing”: indicates that the probes are charging.
Two situations can be verified in this case:
• Status LED of the probe on: The probe is charged less
than 90%
• Status LED of the probe off: The probe is more than
90% charged but still not complete.
It is important to remember that the LED of
the probe stays on until it is 90% charged. This
function allows you to have an indication on
the full charge of the probe, therefore increasing
the autonomy of the probe by about 10%.
• BLUE LED off: indicates that all probes are fully recharged.
• BLUE LED fix on: indicates that the “activate” button has been
pressed. In this case the probes are not powered by the Docking
Station but by the probe’s battery.
The “Battery” LED is an indicator of the state of the auxiliary battery
and consists of a two-tone RED- GREEN LED, whose signals have the
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following significance:
• LED off (both the RED light and the GREEN light are off): in
this case the battery is in sleep mode or has been removed from
the Docking Station
• GREEN light of LED on: the auxiliary battery is charging.
• Steady RED light of LED on: the auxiliary battery is fully
charged.
• Blinking RED light of LED on: indicates battery malfunction
or a battery charging problem.
The “Power” LED is on (GREEN light) when the switch located on the
rear panel of the Docking Station is ON and it is connected to the mains
or, if this is not the case, the auxiliary battery is sufficiently charged.
The Docking Station has a lid, which opens automatically by means of
a spring- brake mechanism, which works by pressing close to the word
“Push”, located on the left shoulder of the unit.
The probes should be put back in the Docking Station when not
in use for acquisition sessions. Moreover, if left for a long period,
we recommend turning of the unit by moving the switch located
on the rear panel of the Docking Station to OFF. Close the lid for
better protection of the probes.
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installation
User PC minimum configuration
Operating system		
Windows XP
Microsoft.NET framework 1.1
Processor			
P IV 1600 MHz
RAM				
256 MB
Video card			
32 MB, Open GL
Disk space			
100 MB for the application,
not including storage for acquired data
USB				
2.0
Installation of the Wi-Fi Interface
The real time data transmission between the BTS FREEEMG 300 and the
Workstation occurs thanks to the Wi-Fi network. This type of connection
is permitted using an Access Point supplied with the system.
An AP is an Ethernet device which works with devices present in a small
area.
The AP, starting point of the service, operates from bridges between the
wireless devices and the systems physically connected to the network with
an RJ45 connector.
The AP transmits the signals to the surrounding area via radio waves. All
the wireless devices within the area can receive signals and communicate
with the AP, and through them, with all the other devices, creating a
network without cables.
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Connecting a Workstation (PC laptop or desktop), not provided with a
Wi-Fi interface, to Access Point with a normal network cable is created
through the wireless connection with BTS FREEEMG 300.
Receiving Unit
Wireless Probes
Access Point
Workstation
The access point included in the system is already configured with the
network name (SSID) “BTSFREEEMG300” with transmission on
channel 6. The base configuration prepared in BTS (factory settings) uses
the following IP addresses:
Access Point 		
BTS FREEEMG 300
Workstation		
192.168.1.1
192.168.1.2
assigned automatically
by the Access Point
You should always use the AP included even if the Workstation is
equipped with a Wi-Fi interface.
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Description of the software on the user PC
BTS EMG-Analyzer is the complete and highly flexible solution for
making advanced elaborations of electromyographic signals and angular
measurements of body segments.
Includes predefined templates for evaluations in clinics, sports, and
research and an editor to develop customized elaboration protocols.
For more details concerning the use of this software, please refer
to its specific manual.
However BTS FREEEMG 300 is manageable by all BTS applications of
SMART family dedicated to the motion analysis with which is possible
to acquire and process the electromyography signals in a integrate and
synchronous way with the other devices connected.
The SMART-Analyzer software allows to perform advanced elaborations
of the EMG signals, integrating the electromyography information with
the cinematic and kinetic data.
It is possible to construct customized analysis protocols complete of
advanced multimedial report.
Switching on BTS FREEEMG 300
The patients unit consists of two main components: the PDA and the
Acquisition Unit and is usually given with the two parts already connected.
Anyway, to connect the Acquisition Unit to the palmtop, run the PDA
along the AU guides, being particularly careful that the CF enters the
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appropriate slot without being forced or receives any sudden impact, and
avoid any excessive pressure on the palmtop screen.
To avoid damaging the Compact Flash we suggest only to remove
the PDA from the AU only if necessary and in any case, even if
expressly requested, it is suggested not to move it completely from
its place, but to let it slip just enough to disconnect it from the
digital card (more or less 1 cm) event that will be signalled by an
audio beep.
The recharge of the battery and the transfer of data with the USB
can also be done through the specific cable, without disconnecting
the AU or the PDA.
It is also advisable to perform a connecting/separating operation
of these parts only when the device is turned off.
Check the connection between PDA and AU.
Switch on the BTS FREEEMG 300: check that the slot switch, located
on the side of the BTS FREEEMG 300 shown in the diagram, is in the
position closest to the closed lock symbol. If not, move it to this position.
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Switch on by actuating the button on the opposite side of the BTS
FREEEMG 300, as shown here:
At this point wait until the application BTS FREEEMG 300 is completely
charged. On the BTS FREEEMG 300 display the following screen will be
visualized:
First Connection
The BTS FREEEMG 300 is supplied with the onboard PDA software
preinstalled and configured. In any case for the first connection we suggest
to perform some verifications.
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Connection check
The user PC communicates with the BTS FREEEMG 300 by means of
Wi-Fi protocol through the Access Point (see § “Installation of the Wi-Fi
Interface”).
Verify that the local net resources are laid out, like assumed in the
configuration of default according to BTS, the PC user IP address must
assigned automatically by the Access Point.
Verify the software configuration installed on the PC.
To do so, launch the program that you want to configure, i.e. EMGAnalyzer, and on the menu bar at the voice “Laboratory” select “Select
Emg Device” and verify that the check is on the voice “FREEEMG”.
Then, again from the menu bar at the voice “Laboratory”, select “Set Emg
Device” and verify that the check is on “EMG device”:
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Verify that the IP address and the port are set with the following connection
parameters:
IP Address:
Port: 		
192.168.1.2
8000
Moreover, if there is a second BTS FREEEMG 300 receiving unit available
(mind that in this case it is possible to manage up to 8 channels with each
unit), select the option “Activate Second Unit (only for BTS FREEEMG)”
and check that the IP address and the port for the second device are set up
with the following connection parameters:
IP Address:
Port: 		
192.168.1.3
9000
If the values do not correspond change them and click on “Update” before
closing the window.
Switch-on the BTS FREEEMG 300 (see § “switching on BTS FREEEMG
300”), wait until the application of the acquisition management is
completely loaded and select the remote application clicking on “Remote”.
If the Wi-Fi connection between the Receiving Unit and the Workstation
is assigned in the correct way, after clicking on the “Remote” button, the
connection led of the Wi-Fi net, that you can find on the front of the BTS
FREEEMG 300 and that presents the Wi-Fi logo (
), will result on
(solid blue).
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During the start-up of the Remote mode different wireless nets
can be found present in the working area.
Always use the “BTSFREEEMG 300” net ignoring the other nets.
From the Workstation launch the BTS EMG-Analyzer application.
Wait until, in the application being used, the respective LED indicating
the state of the Wi-Fi connection between the receiving unit and the
workstation changes from red to flashing green.
Correct data visualization check
During the initial connection, check the correct operation of the probes in
use, and the correct display of data on the BTS FREEEMG 300.
To do this, activate all the EMG probes and, if the system is also provided
with footswitches, two FSW/EGN probes, enabled as FSW, to be tested
all previously charged, as indicated in § ““Active” Button”. When all the
probes are shown to be active on the display, select the Remote mode by
clicking on the “Remote” button. Select the default protocol and then
“Setup Probes” from the menu and wait for all the activated probes to be
acknowledged (the respective box must be green).
To verify the correct functioning of the EMG probes, position a pair of
electrodes (see § “Fitting the Patient”) and connect Probe 1. Next, select
“Gains” from the menu and check the progress of the EMG1 signal.
Repeat the procedure connecting the other probes one at a time.
After checking the electromyograph channels, if the system is also
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provided with footswitches, attach the connectors with the 4 switches
already inserted to the 2 corresponding FSW/EGN probes. After selecting
from the menu the item “Footswitch” (as shown later in § “Guide to
using the software on the BTS FREEEMG 300”), check each contact is
functioning correctly by pressing firmly each switch and observing the
corresponding red LED light on the display of the BTS FREEEMG 300
(see § “Footswitch”).
If your system has one or more electrogoniometers, repeat the probe
activation procedures deactivating all the EMG probes and enabling
as EGN a number of FSW/EGN probes equal to the number of
electrogoniometers included (maximum 8), refer to § “Active” Button”.
When all the probes required are active go back to Remote mode by
clicking on the “Remote” button. From the Workstation prepare an
acquisition protocol that entails the use of a number of EGN equal to
those provided with your system and transfer it on the receiving unit (see §
“Create a new protocol”). Selection the newly transferred protocol, select
“Probes setup” on the menu and assign each channel to an EGN probe,
checking that they are all recognized (the respective box must be green)
(see § “Probes Setup”).
Finally, connect each electrogoniometer to a connector and then to a
FSW/EGN probe. Select “Gains” from the menu and check the related
signal to the EGN channel that is testing. Repeat the procedure for each
electrogoniometer provided.
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acquisition protocol
Now we will describe a basic procedure about how to create a new protocol
using BTS EMG-Analyzer software.
Refer to the EMG-Analyzer manual for further details about the
“Protocol Builder” function.
The procedure may be different if performed with other
applications. In this case, refer to the specific manual of the
software you are using.
Please note that with BTS FREEEMG 300 it is possible to acquire:
- up to 16 analog channels: electromyographic signals - EMG (each
EMG employs 1 analog channel), up to 16 electrogoniometer
signals - EGN (each EGN employs 2 analog channels)
- 8 on-off analysis areas - FSW.
Refer to § “Acquisition unit” for the detailed list of possible probe
combinations.
Launch the software EMG-Analyzer and wait for the led of communication
with the receiving unit to be green.
Put BTS FREEEMG 300 in Lab Modality by clicking from the main page
on the “Remote” button; if two receiving units are being used, make sure
that both of them have the Remove Mode activated.
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To create a new protocol, from the menu voice “Laboratory” of EMGAnalyzer, select “Create Emg Protocol” .
A window will open, which allows to create or modify protocols.
To create a new protocol follow this procedure:
- Click on “New”. The fields to be filled for the protocol creation
will be enabled:
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acquisition protocol
-select the anatomical map containing the muscle you want to add
to the protocol and click on the little yellow square that identified
it; immediately the first free row available in the protocol table
will be filled with the info related to the selected muscle.
- repeat this operation for all the muscles to be acquired.
-If you want to acquire Footswitches, select the “District”
anatomical map and proceed insert the 8 contact point in the
protocol by selecting the corresponding square in the anatomical
map:
-Finally, if you want to acquire electrogoniometers check the first
free line in the protocol table, click on the “Type” field and select
EGN among the voices available in the drop box menu:
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In the same way, click on the “Description” field and select among
the drop box menu voices the angle you want to acquire with the
EGN, then on the “Side” field to select the body side to which
the data refers.
- indicate a name for the protocol specifying it on the “Name” box
-it is possible to insert also a short description of the protocol using
the appropriate box “Description”
When every signal of the protocol is inserted, proceed saving the protocol,
following these instructions:
- make sure that the BTS FREEEMG 300 is in the Lab Modality
- click on “Save and Transfer”: the protocol will be both saved on
the PC and transferred on to the BTS FREEEMG 300.
If two receiving units are being used, it is necessary to wait for
the protocol to be transferred to both units. At the end of the
transfer, the protocol will be visible in both, but in each unit will
be displayed only the respective signals from the channels they are
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connected to.
Note that If you are working with two receiving units
the first 8 channels and the FSW will always be assigned
to the first unit, while the other, starting from the 9Th to
the 16th, will be loaded on the second unit.
For example, if a protocol with 10 EMG channels and
the footswitches has been created, the protocol on the
first unit will register 8 EMG channels and the FSWs,
while the protocol on the second unit will register only
2 EMG channels.
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fitting the patient
Here some guidelines to follow for a correct application of the probes.
Carefully prepare the skin of the subject in the area of the muscle in which
the pre-gelled electrodes will be positioned.
Note that the condition of the skin where the electrodes are
applied influences the quality of the acquired signal.
Therefore you should pay careful attention to this phase in
preparing the subject.
Attach the probes, previously activated (see § ““Active” Button), to the
electrodes using the appropriate clips.
Find the position in which to place the electrode on each muscle that
you want to analyze and apply the probe in the direction of muscle fibers
through the pre-gelled already applied to the probe, trying to keep the two
electrodes as close as possible (tangent to each other).
Thanks to the special hardware architecture of the probes and the
much reduced weight, normally no extra fixing is required.
If the analysis protocol being used requires it, proceed to the positioning
of the footswitches to the respective contact areas.
When FSWs are used, these are fixed to the skin of the subject used tape
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or hyper-allergenic bi-adhesive tape.
Never apply the tape on the black membrane of the sensor,
removing the tape could cause the detachment of the membrane
making the switch unusable.
After positioning the sensors, connect them by means of the appropriate
connector to the corresponding preactivated probe.
Finally, attach the probe and the switch box with the hypo-allergenic
adhesive tape close to the same switches (i.e. close to the ankle when the
sensor have been placed on the foot sole) at all times taking care to leave
the patient the greatest degree of freedom of movement.
Finally, If the analysis protocol being used requires it, proceed to the
positioning of the Electrogoniometers.
Each EGN should be positioned straddling the joint with the two stiff
ends positioned on the sagittal plane, parallel to the axes of the two body
segments that make up the joint under investigation, securing them to the
patient’s skin using the plaster or hypoallergenic double-sided tape.
After positioning the sensors, connect them by means of the appropriate
connector to the corresponding preactivated probe.
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Finally, attach the probe and the switch box with the hypo-allergenic
adhesive tape close to the sensor on the side where the connection cable
comes out.
Throughout the dressing procedure of the patient or at the end of it you
can use the receiving unit to check, using the oscilloscope of the “Gains”
function of the RU, the correct placement of the electrodes and control
that the acquisition gain of the EMG channels is properly set.
It’s possible also to compare two channels at a time using the “Cross check”
function (see § “Guide to the use of the onboard software”).
After making all the checks, it is possible to proceed with the acquisition
session.
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guide to the use of onboard software
Initial screen
At the start-up of the BTS FREEEMG 300 you see the initial screen
comprised of six buttons: “Local”, “Remote”, “Download”, “Config”,
“Activate” and “Exit”.
In the lower right hand corner of the main screen there is the version number of the software installed on board.
“Active” button
The “Active” button allows only those probes to be activated which are
to be used during the acquisition and to assign each of these to a specific
channel.
Click on this button to call up the following display:
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BTS FREEEMG
The probes are divided by type: EMG, up to 16 probes for collecting
electromyographic signals, FSW, up to 8 probes for collecting basographic
signals (up to 2 can be selected at the same time), and EGN, up to 8
probes for collecting signals from the electrogoniometers.
A number (or letter) and the color corresponding to the ID tag of the
probe is shown next to each probe.
By clicking on Options and then “Show probe ID” you can pass from
viewing by label to that for viewing by “ProbeID” identification code, the
code shown on the clip of each probe and vice versa:
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To activate, select the probe that you would like to use for the acquisition
by enabling the check mark in the appropriate box:
It is important to remember that only certain probe configurations
can be activated (for the detailed list of possible configurations,
see § “acquisition unit”).
This procedure will be guided by the software disabling, upon
reaching a configuration limit, all the checkboxes that can no
longer be selected, furthermore, in the notification area at the
bottom, any time the maximum configuration for a type of probe
(EMG, EGN, or FSW) is reached, a warning message will appear
as shown in the following figure:
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BTS FREEEMG
Before proceeding to activation, connect the probes to the Charger (or to
the Docking Station) included, use two units if required.
This operation resets the probes, deactivating any probes already active,
except for those probes that are more than 90% charged (in case of
Charger to reset these probes you must wait for the battery level to below
the threshold of 90%).
It is advisable to connect all the probes and not just those used
during acquisition to ensure that you reset any previously activated
probes, which will not be used.
An already active probe can be reused and does not require
reactivation. In this case it must be selected in the activation
program, but do not connect it to the Charger or Docking Station
so it doesn’t reset.
It is in any case necessary that the probes are sufficiently charged
for the activation to succeed.
Click Start to initiate the probe activation procedure.
Now we would like to distinguish between operations to perform based on
if you use the Charger or Docking Station:
- Charger procedures:
The probes will be activated only when removed from the Charger.
Remove the probes, therefore, from the charger, and wait for the BTS
FREEEMG 300 to activate all the selected probes.
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To facilitate the activation and to verify that all the required probes
are active, we suggest detaching the probes from the charger one
at a time.
- Docking Station procedures:
Click on the Docking Station “Activate” button.
Immediately all the probes selected in the activation probe will be
automatically activated and all the other probes will be reset, regardless
of the charge level.
When a probe has been recognized and activated, it will be highlight by a
green rectangle, as shown in the following figure:
When all the selected EMG, EGN and FSW probes are indicated as
activated, click “Stop” to terminate the activation procedure.
Finally, click “Exit” to return to the initial screen.
Selecting the work mode
The first two buttons (Red and Yellow) allows the user to select the desired
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working mode: button “Local” Holter mode, button “Remote” Lab mode.
Local Acquisition
(Holter Mode)
Remote Acquisition
(Lab Mode)
Clicking on the button for the desired mode, you can enter the software
of relative management.
In particular by clicking on the “Local” and “Remote” buttons you will see
the following screens:
Description of the main bars and menu
All of the BTS FREEEMG 300 pages have a button bar on the right and
a status bar at the top.
Button Bar
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The side arrows (Toggles) can be used to change the active field.
The up and down buttons make it possible to:
• change the value in the active field
• navigate around the main menu
The menu button opens the main menu
Status Bar
The status bar displays:
• active page
• the condition of the 4 transmitters indicated with A, B, C, D.
One transmitter can serve more than one probe. When a probe
is transmitting the LED of its corresponding transmitter turns
steady green
• The status of the FSWs (steady green LED if at least 1 FSW probe
is active and recognized by the system)
• battery level
Main Menu
Clicking on the “menu” button of the buttons bar you enter the main
menu.
There are two menus: one for the Holter mode and one for the Lab mode.
The two are different for the items: “Database” and “PlayBack” which exist
only in the Holter mode.
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Lab Mode Menu
Holter Mode Menu
The main menu allows you to:
- explore the functions of the BTS FREEEMG 300.
To enter a page select the corresponding icon by clicking with
the stylus on the desired function or by using the Up and Down
Buttons.
- lock up the palm by clicking with the stylus on the icon “Lock”.
Accomplishing this function will result in the following screen:
To unlock the palm, clik on the “Unlock” button, this will
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immediately move to another position.
To complete this procedure it is necessary to press it again before
it goes back to the original position.
- close the application by clicking on the “Exit” button.
The following describes the menu functions starting from the ones that
you can find both in the Holter Mode and in the Lab Mode that have the
same characteristics.
Protocol
This item allows the user to select a protocol from the ones previously
created by the user (see § “Acquisition protocol”).
In any case if a protocol hasn’t yet been created it is possible to use the
default protocol.
Selecting a protocol is achieved by scrolling through the list on the left
panel by clicking on the Up and Down buttons of the buttons bar. The
protocol you select will be highlighted in blue.
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Probes Setup
When a new protocol is defined, the user needs to associate with the items
of the protocol (muscles, joints and foot areas) the channel that physically
acquires the data.
By clicking “Probes setup” from the menu you will see the following
screens:
In particular we can identify two zones:
• the probe-protocol association table
• The “Probes” area
The table, for each signal of the acquisition protocol, previously selected in
the “protocol” section shows:
• the identifier of the assigned probe (comprised of the color and
number/letter of the label), if no probe has been assigned the field is
set on “--”
• the type of probe: Surface, Footswitch, Electrogoniometer,...
• the state of the probe:
• OK: Signal/probe properly assigned, the probe has been
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selected in the activator and is connected to the RU.
• NOT CONNECTED: Signal/probe properly assigned, the
probe has been selected in the activator, but does not appear
to be connected to the RU.
• “--” : no assigned probe.
• NOT ACTIVATED: the probe is assigned to the protocol
signal, but has not been selected in the activator.
• ERROR: the signal/probe has not been properly assigned as
the type of probe expected by the protocol does not match
the actual probe
In the “Probes” area (rectangle at the bottom) where the selected probes in
the activator are listed and the state is described.
In particular, the boxes associated to channels can have different colors:
• Green:
the selected probe in the activator is connected to the RU and is
assigned to a protocol signal (the “Status” field of the protocol is
“OK”)
• Grey:
the selected probe in the activator is connected to the RU but is not
assigned to any protocol signal
• Orange:
the selected probe in the activator is not connected to the RU but
is assigned to a protocol signal (the “Status” field of the protocol is
“NOT CONNECTED”)
• White:
the selected probe in the activator is not connected to the RU and has
not been assigned to any protocol signal
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• Red:
the selected probe in the activator is connected to the RU and assigned
to a protocol signal, but the type of probe expected by the protocol
does not match the actual probe (the “Status” field of the protocol is
“ERROR”).
To make the association probe-signal:
1. use Up and Down buttons to select a signal
2. use toggle to select the “Probe” field
3. choose among the available ones (all the probes present in
the probe area will be proposed), the probe to pair to the
highlighted signal
4. use toggle to select the description (the whole row)
5. move on the next description with the arrow Down and restart
from point 2 to assign the channel to the next item.
Active fields (Toggle)
Description
Probe
Value range (Select)
Signals List
1, 2, ..., 15, 16, for EMG channels
A.1, A.2, A.3, A.4, B.1, B.2, B.3, B.4,
C.1, C.2, C.3, C.4, D.1, D.2, D.3, D.4,
E.1, E.2, E.3, E.4, F.1, F.2, F.3, F.4,
for EGN and FSW
all available in 4 colors:
Green, Red, Blue, Yellow
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Each Electrogoniometer generates two signals, it is important that
you assign two channels of the same probe to the signals generated
by the same EGN, e.g. C.1, C.2
To properly assign the basographic signals to the FSW probe
channels please remember to match the 4 signals related to one
probe to the protocol signals related to the physically close contact
area, e.g. A.1, A.2, A,3, A.4 for the Right foot and B.1, B.2, B.3,
B.4 for the Left foot.
Before starting acquisition, the user needs to confirm that the
“Status” of each protocol voice is OK.
Digital Oscilloscope (gain)
With BTS FREEEMG 300 the user can set up to 3 different ranges of
values to see the muscular contractions better.
To setting this value see § “ Config” Button”.
The selectable values are:
• S1: 6mV;
• S2: 3mV;
• S3: 1,5mV.
By accessing the gains page it is possible to verify that electrodes have
been well positioned (no noise or motion artefacts) and that the signals are
properly displayed and if they are not you can change the range of value
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set in the configuration section.
To do this, simply view via the oscilloscope the real-time muscular activity
of each muscle you would like to analyze for a few seconds, asking the
patient to perform several contractions.
If the intensity of the muscle is very low, so that it is difficult to distinguish
between when the muscle is in contraction from when it is at rest, the range
needs to be reduced (the system will increase the gain correspondingly).
If, on the other hand, the signal in the current amplitude tends to saturate
(meaning during the contraction there are peaks in the orange zone or
beyond), it is necessary to increase the range (the system will reduce the
signal gain accordingly).
Keep in mind that the base range value will be the same for all
signals acquired.
Therefore select the value that lets you best see the channels
simultaneously without saturation.
If the selected range is insufficient to contain the entire signal
dynamic, the acquisition data will tend to saturate during
the contraction, which will appear as unnatural plateaus in
measurement values at the limits of the selected range.
On the other hand, if the signal is very weak, maintaining a high
range is not a mistake. It is recommended, however, that the range
be reduced whenever possible, in order to make better use of the
digitalization of the acquisition card.
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The gain used in the acquisition of the EMG signals is managed
by the application on the basis of the range selected, the choice
of range should be done with great care since it affects not only
the display but also the acquisition signal (it is not a just a simple
zoom!).
By clicking the voice “Gain” from the menu you will see the following
screens:
To scroll the different signals, click on the Toggle to activate the “Signal”
active field and select the protocol item desired by actuating the Up and
Down buttons.
To make the signal visualization easier it is possible to use the “Time”
active field (by selecting it with the Toggle) this allows to adjust the speed
at which the signals run on the screen (this is only for display purposes,
and will have no effect on the capture).
It is possible to set the time value interval shown on the axes of the
oscilloscope abscissas, selecting from a range of values from 1 to 10
seconds, that can be selected with the Up and Down buttons.
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Active fields (Toggle)
Signal
Time
BTS FREEEMG
Value range (Select)
Protocol signals
1 sec - 10 sec
Digital Oscilloscope (cross check)
The Cross Check is very useful during the patient setup phase, allows the
operator to verify, prior to the actual acquisition of the signals, that the
electrodes have been positioned correctly.
The possibility of displaying two traces simultaneously prevents the
problem of cross-talk: this phenomenon occurs as a detection of electrical
activity on the trace of a muscle during a movement which should not
involve the muscle in question.
Cross-talk is occurring if, for example, during the movement of extension
of the wrist, one observes the activity of the ulnar carpus flexor.
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This is due to an incorrect positioning of the electrodes, as a consequence
of which the channel dedicated to a certain muscle is in reality measuring
the activity of another muscle.
In the above example, the activity measured on the trace of the ulnar
carpus flexor is not in reality being produced by that muscle, but by one
deeper down or by its antagonist.
To appoint the signals to visualize select the “Signal 1” and then “Signal
2” field with the Toggle and scroll the signal list included in the protocol
using the Up and Down buttons.
The current display can be enlarged or reduced via the zoom function: this
does not affect in any way the data being read.
The “Time” field can be used to vary the speed at which the signal runs
on the screen (again, this has no effect on the reading, but only on the
display).
It is possible to fix the time intervals represented on the axis of the abscissas
of the oscilloscope, choosing from a range of values from 1 to 10 seconds.
Active fields (Toggle)
Signal 1
Signal 2
Zoom
Time
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Value range (Select)
Protocol signals
Protocol signals
From 1/10 to x10
From 1 sec to 10 sec
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Footswitches
The Footswitches page shows in real time the activation of the contact
zone during the deambulation contact phase.
When a zone is active, the foot is resting on it - the corresponding circle
colors is red.
If there isn’t correspondence between the contact points indicated
on the display and the movements done by the subject (for
example if with the right foot in stance the areas under the left
foot of the display became red) we suggest you to review the FSW
channels setup selecting the menu voice “Probes Setup”.
Usually the Footswitches are used for studying the sole of the foot during
deambulation.
Four points have been identified for this purpose in order to be able to
distinguish the foot tread while walking.
These 4 areas are:
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• Internal Contact,
• External Contact,
• Heel Contact,
• Toe Contact.
However, while preparing the protocol you can indicate the general
contact areas:
• “Contact area 1”,
• “Contact area 2”,
• “Contact area 3”,
• ...
The Footswitch probes can also be used for other applications and
placed on other parts of the body where you would like to record
the moment of contact (for example on a finger during pointing
exercises).
In this case you should use a general “Contact Area 1”, “Contact
Area 2” in the protocol, and in the FSW page refer to the rectangles
located under the figure showing the foot to check that the probes
are properly activated.
“Local” button: Holter Mode
In this mode the RU is completely independent and it’s possible to acquire
the data independently of the WS.
Session preparation:
selecting “Local” you can enter the patient’s database on the palm.
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List of patients already included in the
database of the BTS FREEEMG 300
List of sessions for the highlighted
patient
List of the tests of the highlighted
session
To add a new patient click with the stylus on “New subject” button.
A window will open which allows you to insert general information about
the patient.
To insert the patient data:
• move up to the field to insert
• insert the value with the keypad, (each tap on the gender field
will change from F to M and viceversa)
• press OK to insert the patient into the database
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It is possible to modify or to delete the data of a patient already inserted.
By clicking on the line of that patient, it will be underlined in light blue
and the “Delete” and “Modify” buttons will appear.
Clicking on “Modify” a window will open that allows to modify the
general information of this patient.
Click on “Delete” and immediately a window with the request to confirm
the deletion will appear:
Clicking on “Yes” the trial will be removed from the database, with all
the related sessions and trials, while if you choose “No” the deletion will
be aborted.
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To create a new test session click on “New Session”.
A window will open that allows to the user to insert data linked to the
session:
• patient weight
• patient height
• pathology
• possible notes of the session
Press “OK” to add the session of the selected patient.
The default protocol is linked to the session; to change the
protocol click on the Menu button and enter the “Protocol” item
(see § “Protocol”).
Cautious that it is not possible, rather than, to change protocol of
a session when this has already got some acquisitions.
To continue working with the same patient but with a different
protocol it is necessary to create a new acquisition session for that
patient.
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To modify or to delete the data of a session created previously click on the
correspondent line, it will be underlined in light blue and the “Delete” and
“Modify” buttons will appear.
Clicking on “Modify” a window will open that allows to modify the data
related to this session:
Click on “Delete” and immediately a window with the request to confirm
the deletion of the session and the relate trials will appear:
Clicking on “Yes” the session and the trials will be removed from the
database, with all the related sessions and trials, while if you choose “No”
the deletion will be aborted.
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Latter it is possible to delete single trials. To do that click on the
correspondent line, it will be underlined in light blue and the “Delete”
buttons will appear.
Click on “Delete” and immediately a window with the request to confirm
the deletion of the trial will appear:
Clicking on “Yes” the selected trial will be removed from the database,
with all the related sessions and trials, while if you choose “No” the
deletion will be aborted.
Acquisition:
to proceed with the acquisition in “Local” mode it is necessary to have
created a new session and to have selected an analysis protocol or to have
selected a session already in the database.
Proceed then with the operations described in the previous paragraphs:
“Probes Setup”, “Range”, “Digital Oscilloscope”, “Footswitches”.
Once finished all the preliminary operations and the necessary checking it
is possible to proceed with the acquisitions.
To do that, select the item “Capture” from the Menu.
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A screen will appear, which gives the setup for that acquisition:
For every test it’s possible to indicate the Start and Stop mode, the
acquisition frequency and the type and notes of the test.
To edit the notes click on “Edit Notes”, a window will open which allows
you to edit the notes.
Introduce the note using the keyboard and then click on “OK” to confirm
or on “Cancel” to come back to the previous screen without saving the
text just typed.
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To modify the other acquisition parameters select the relative field with
the Toggle and then use the Up and Down buttons.
Active fields (Toggle)
Acq. Frequency
Flag
Value range (Select)
1KHz, 2KHz, 3KHz, 4KHz
MMT, Resting, Walking, Undefined, Extra
If the acquisition frequency selected is 3 or 4KHz, the system can
acquire 8 EMG channels maximum.
If the selected protocol requires a higher number of probes a
warning message will appear and the acquisition won’t be allowed.
By clicking on the “Start” button, the acquisition starts and the system
automatically goes into Lock mode, showing the following:
To unlock the palm click on the “Unlock” button, this will immediately
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move to another position.
To complete this procedure it is necessary to press it again before it goes
back to the original position.
Before quitting this mode the screen with the acquiring setup reappears
but the “Start” (or “Arm”) button is substituted with the “Unlock” and
“Stop” buttons.
The “Unlock” button allows to come back to the previous screen.
Clicking on “Stop”, instead, will end the acquisition.
At this point the following screen will be visualized:
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To save data on BTS FREEEMG 300 select “Store” whereas to cancel the
data just acquired click on “Delete”.
In this case a confirmation for the cancellation will be asked of the user,
select “Yes” if you want to delete the new acquired data.
Click“No” button” and then “Store” to save the test.
After the storing or the cancellation of the last acquired test you are
redirected to the screen containing the “Start” button.
To continue with another acquisition click on “Start” and repeat the
operations just described. If any other acquisition won’t be executed, select
“Exit” from the menu.
Playback
In the Holter mode it is possible to visualize a preview of the data acquired
and saved in the database.
To do that, from the menu select the voice “Database” and select the
patient, the session and the trial that you want to visualize clicking with
the stylus on the correspondent line, that will be underlined in light blue.
Once the trial is selected, from the menu select the voice “Playback”.
At the end of an acquisition session it is possible to go directly to the
“Playback” page, without passing from the “database”: in this circumstance
all the trials saved in the last session acquired will be loaded.
In both these circumstances the following screen will appear:
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From the lower panel select the trial to visualize by tapping on the
correspondent line.
It is possible to visualize two signals at the same time.
To do that select the field “Signal 1” and than “Signal 2” using the Toggle
and scroll the list of the available signals operating on the Up and Down
buttons.
After that to improve the signal visualization, adjust the active fields
“Zoom” and “Time” selecting them with the Toggle and changing their
value with the Up and Down buttons.
In particular the “Zoom” field allows increasing or reducing the current
view area (it acts on the axis of ordinates), while the “Time” field allows
changing the temporal value range showed on the axis of the abscissas,
choosing among a range of value in between 1 and 10 seconds.
This means that the selected trial will not be entirely visualized, but only
bits of the length of 1, 2, 5 or 10 seconds according with the “Time” field.
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Active fields (Toggle)
Signal 1
Signal 2
Zoom
Time
# Trial
BTS FREEEMG
Value range (Select)
Protocol signals
Protocol signals
From 1 sec to 10 sec
Trials of the selected session
However it is possible to scroll the whole trial changing time after time the
frame from where the visualization starts.
To do that click with the stylus on the grey band that represents the whole
trial in the point correspondent to the first frame to visualize.
On the grey band at the two extremities, are indicated the beginning of
the trial (that is 0:00) and the total length of it (like in the example in the
figure 0:34, that means 0 minutes and 34 seconds).
In the spot in which you tap, a grey rectangle will appear in which will be
indicated the correspondent time of the selected first frame (like in the
example in the figure 0:21).
Therefore, if the “Time” field is set, for example, on “5sec”, we are
visualizing 5 seconds of trial starting from the 21st second.
It is possible, if you regard it relevant, delete some trials.
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Click on the trial, choosing it in the lower panel, that you want to delete.
It will be underlined in light blue and the “Delete” button will appear.
Click on “Delete” and immediately a window with the request to confirm
the deletion will appear:
Clicking on “Yes” the trial will be removed from the database, while if you
choose “No” the deletion will be aborted.
Importing data to EMG-Analyzer
The data acquired in Holter mode is saved in a local database in the BTS
FREEEMG 300. To execute the elaboration and the analysis of the data,
you need to import the test using the software EMG-Analyzer.
To do this, proceed as described further in § “Download button”.
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“Remote” button: Lab mode
In this mode the connection between RU and WS is always available.
The specific characteristics are:
• sending data boxes to the WS for the visualization in the remote
oscilloscope, available in the applicative software.
• data transfer at the end of acquisition.
• the duration of acquisition and the Start/Stop are controlled by
the PC.
Selecting “Capture” from the main menu the following screen appears:
This screen displays some information concerning the system:
• Status: Ready mode
• Mode: Stand Alone
• Data: None
To make an acquisition in Lab mode, there must be no
data saved on the BTS FREEEMG 300.
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This possibility can happen only with a loss of WiFi connection between
BTS FREEEMG 300 and Workstation during the last acquisition, or if
the data transfer has not gone well.
In this case the screen displayed after having selected “Capture” from the
main menu will contain instead of the “Arm” button, the “Delete” button
and the “Data” field will be “Ready”.
If you want, it is possible to recover the lost data saved in the RU
before proceeding with the new acquisitions downloading them on the
Workstation using the EMG-Analyzer software.
To know the download procedure consult the manual of EMGAnalyzer.
Otherwise the data will have to be deleted and cannot be retrieved in the
future.
To delete the data, click on the “Delete” button; by doing this the system
will ask you a confirmation for the deletion, select “Yes” if you really want
to delete the data in a permanent way, otherwise click on “No” to come
back to the previous screen.
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Once deleted the file, the “Arm” button appears again and the “Data” field
will again become “None”; so it’s possible to proceed with the acquisition.
Before arming the system it is possible to set the acquisition frequency
using the Up and Down button of the button bar.
Active fields (Toggle)
Acq. Frequency
Value range (Select)
1KHz, 2KHz, 3KHz, 4KHz
If the acquisition frequency selected is 3 or 4KHz, the system
can acquire 8 EMG channels maximum. If the selected protocol
requires a higher number of probes a warning message will appear
and the acquisition won’t be allowed.
To prepare the system for capture it is necessary to “arm” it by simply
tapping the “Arm” button that will be replaced by the “Lock” and the
“Cancel” buttons.
Now it is possible to make the acquisition via remote control.
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At this level it is not possible to change the acquisition frequency.
Tapping on the “Cancel” button the previous screen appears, returns
control to the RU.
To proceed with the next acquisition, the system needs to be armed again.
It is possible to lock the system by clicking on “Lock” directly by this
window, therefore at the beginning of the acquisition the BTS FREEEMG
300 locks automatically displaying:
The acquisition starts-up through the remote control, directly by
the Workstation.
This display will remain on the BTS FREEEMG 300 until the acquiring
session is over.
It’s possible to interrupt the acquisition remotely and proceed with the
next ones.
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At the end of every acquisition an automatic data download will be
executed. Only at the end of the download is it possible to launch another
remote acquisition.
Once the acquisition session is over, unlock the BTS FREEEMG 300.
In order to do so, press the “Unlock” button, this will immediately move
to another position.
To complete this procedure it is necessary to press it again before it goes
back to the original position.
Finally to quit from the “Armed” status click on the “Cancel” button.
For the details of the remote management of the acquisition from
the WS refer to the specific manual of the software meant to be
used.
Download Button
If the Holter mode is chosen (local acquisition), the acquisitions are saved
in a local database to BTS FREEEMG 300.
To elaborate the acquired data with the dedicate softwares installed on
the Workstation, the user needs to download them with EMG-Analyzer
following these instructions:
• Select from the main page the download mode clicking on the
“Download” button
• BTS FREEEMG 300 keeps waiting, showing the following
screen:
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• From EMG-Analyzer, select the “View Local Database” item
from the “Laboratory” menu.
• A window will appear that will allow you to explore and modify
the active database on the BTS FREEEMG 300, and download
all the files that you are interested in.
For further details concerning the data download refer
to the user manuals of EMG-Analyzer software.
The data import takes place with a wireless connection;
if the import operation fails, you need to verify that
the RU and WS are connected (see § “Appendix C –
troubleshooting guide”).
• When the download is finished on the BTS FREEEMG 300
keep pressing the “Exit” button to go back to the main screen.
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“Config” button
The “Config” button launches an application that allows the modification
of some system settings.
It uses five tabs to reach the different information and features:
• Info:
Main screen that contains information of the installed versions.
• General:
General settings (i.e. language, audio settings...).
• Radio:
Associates the ID identifier of each EMG and FSW/EGN probe
to its label identified by color and number/letter;
setting of the signal range;
setting the radio channels utilizing the probes.
• Database:
Database management.
• Maintenance:
session permitted only to BTS Technician staff, for assistance.
For this reason to access this area a Password is required.
To execute any changes of the parts that can type on it is possible to use
the touch-screen features of the display and where necessary, activate the
keyboard, clicking on the low right corner icon represented by a little
keyboard.
To exit this application and come back to the main screen, you must tap
on the “Ok” button, placed in the top right corner.
One tap on this button will confirm all the changes made.
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It won’t be possible to undo the changes made, apart setting again,
manually the previous values.
All the changes made are immediately activated, therefore, in some
circumstance, it will be necessary to restart the BTSFREEEMG300
application to see these changes applied (for example when you change
the language).
Let’s analyze now, more in depth, the four tabs that the user can modify.
Info
Clicking on the “Config” button on the main screen, it automatically
selects the application screen in which the tab Info is selected:
On this page it is possible to read all the information about the versions of
each installed component, hardware or software.
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General
Selecting “General”, the following screen will be visualized:
It is possible to set:
• The language
• “DHCP”, for automatic host configuration, the “IP address”
and “Netmask”, available only with the “DHCP” not checked,
to manually assign the connection parameters and the “Port
Number”.
• “Quite mode”: Checking this voice, the program will play
without any noise (instead of what normally happens when for
example you Tap on a button or activate an acquisition…)
• “Lock on Capture”: Checking this voice when an acquisition
starts the BTS FREEEMG 300 will be automatically locked
showing the “Unlock” button
• “Video off on Capture”: if checked, the display automatically
will switch-off at the acquisition beginning. To activate the
screen again a click on one of the PocketPC button is enough
• The use of a Secure Digital memory card to store the temp file
generated during the acquisition (check this voice only if there is
a Secure Digital board in the related port).
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Radio
When “Radio” is selected the following page is displayed:
The “EMG probes” and “FSW/EGN probes” sections allow to associate
the ID that uniquely identifies each probe manufactured by BTS S.p.A.
with the probe’s label.
The ID is shown on the clip of every EMG probe and on the back of every
FSW/EGN probe.
Up to 16 EMG probes and up to 8 FSW/ EGN probes can be registered.
Probes that are not registered in this section will not be recognized
by the Receiving Unit and therefore may not be used for
acquisitions.
Generally, the system is distributed to the customer with this association
already made.
However it could be useful if new probes are purchased or if probes are
replaced due to a malfunction.
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However when you receive the system it is advisable to check
that the association has been made correctly. If a probe has been
incorrectly associated to a label or the ID number does not match
that on the clip the probe may not work. Instead, changing
two IDs compared to the label could cause an exchange of
acquisition signals as well and therefore cause false results in the
Electromyographic examination.
Follow the procedure below, to register a probe that has not been
introduced:
• Enter the ID of the probe using the keypad that can be activated
on the bottom right-hand side of the page.
If the string entered is not admissible or has already
been entered the software will highlight it in red.
• Select the color of the probe’s label (the colors can be Red,
Green, Blue, and Yellow) using the drop down menu.
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• Finally, select the number or letter shown on the probe’s label
(number selection from 1- 16, letter selection from A-F).
If the label (identified by the color/ number or letter
combination) has already been used the software will
highlight the ID string in red.
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From the Radio page two other sections may be accessed.
The “Signal” section allows to select the Range for electromyographic
signals. 3 different value are available:
• 6,34mV;
• 3,17mV;
• 1,62mV
From the “Radio Channels” section the ZigBee channel with which to
work can be assigned to the activator and the four transmitters.
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It is recommended to modify this section only if absolutely
necessary and eventually with referral to BTS technical support.
Database
Selecting “Database” the following screen will be visualized:
In this section it is possible to select the current database, to create new
databases, to delete and rename existent databases.
There are two list-boxes, the first one, “Media”, allows the selection of the
box in which the database can be found or to insert a new one.
In particular there are two possible medias: the flash memory, internal to
the Pocket PC and the Secure Digital card.
If the latter is not present, a message will be visualized indicating that the
card is not inserted.
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Instead the error message:
“ERROR: media not initialized”
will be visualized if the card has been inserted but hasn’t still been initialized.
In this circumstance a button will appear allowing the initialization.
Once selected the “Media” it is possible operating on the second list-box
to select the database to use.
Mind that if the selected Media is empty, it is necessary to create
a new one.
To create a new database click on “New”.
The new database will be created with the default name “TrialsDB”.
To change the name select it and click on “Rename”.
To delete a database select it and click on “Delete”.
This operation removes completely the database and all its content
(patients, sessions and trials).
For this reason the system will ask a confirmation before
proceeding with the deletion.
“Exit” button
The “Exit” button allows the closing of the application and the visualization
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guide to the use of onboard software
of the operative system installed on the PDA.
To do that it is enough to press and hold the “Exit” button for few seconds.
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BTS FREEEMG 300 updating
Updating the onboard software
To update the BTS FREEEMG 300, exit the application by selecting the
entry of the Exit menu and holding down the “Exit” button for some
seconds.
Before carrying out the upgrade of the software it is recommended a
backup be made of the software version currently installed.
Slide the PDA out of the methacrylate guide enough to disconnect the
Compact Flash. Connect the PDA via the dedicated cable to the USB port
of the WS.
On the WS, from Windows, run the update program, launching the
“BTSFREEEMG300Setup.exe” file, and follow the video instructions till
the update is complete.
Reinsert the PDA in the AU.
Restart the “BTSFREEEMG300” application on the BTS FREEEMG
300: from the Start menu, click on “Programs”, search for the
“BTSFREEEMG300” icon and single click it. The main screen will appear.
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BTS FREEEMG 300 updating
Creating a backup image
At the end of each software upgrading, it is important to remember to
create a backup image.
It can happen that the Pocket PC battery goes completely
dead. When this happens all the BTS settings as also the
BTSFREEEMG300 software will be lost. To restore the software
and bring the BTS FREEEMG 300 to the standard configuration
it will be enough to proceed with the restore of the last backup
done (see Appendix D – Troubleshooting guide).
To do the backup proceed as follow:
• exit from the BTSFREEEMG300 application holding the
button “Exit” for some seconds
• select “Start” and then “Programs”
• among the installed programs, choose “iPAQ Backup”:
• with the stylus tap on “Restore Now” and wait the end of the
backup procedure.
The Pocket PC will restart and then the BTSFREEEMG300
software will be automatically reloaded.
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BTS FREEEMG
The backup procedure is now finished, therefore we suggest to rename the
backup file created giving it a more meaningful name, in particular we
recommend to indicate the version number of the software.
To do that proceed in this way:
• exit from the application
• select “Start” and then “Programs”
• among the installed programs, choose “File Explorer” click on
the arrow that appears on the grey bar, under the title “File
Explorer” and choose “Device”
• open the folder “iPAQ File Store”
• look for the backup file just created that will have a name like:
Backup_2007-07-15, where the date is the one during the
backup time
• with the stylus, tap and hold for few seconds on the backup file
icon till when the menu appears
• choose rename and type the new name (i.e. Backup_v107
supposing you have updated the software with the version
1.2.107.0).
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maintenance and cleaning
Periodically inspect the PDA and the slide of the receiving unit for any
signs of detachment, cracks or other damage.
Clean the external parts periodically with cleaning liquid approved for
computers. On the PDA monitor use a microfibre cloth only, and do not
use liquid detergents or solvents.
Contact with the skin of the patients is achieved via the pre-gelled Ag/
AgCl electrodes, which, being single-use disposable, intrinsically guarantee
a sufficiently high level of hygiene.
Generally you use hypoallergenic band-aid or hypoallergenic doublesided tape to apply the Footswitches in correspondence of the foot contact
points.
At the end of each work session, it is important to carefully remove every
glue or gel residual from these parts and from the probes.
After each use we suggest to clean the switches using a soft cloth moist with
a disinfectant solution, being careful removing any glue residual left.
The BTS FREEEMG 300 cannot be sterilised.
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appendix A
technical specifications
Wireless Probes
Geometry: 			
Electrodes: 			
Separation: 			
Autonomy: 			
Battery: 			
Dimensions: 			
Weight: 			
Frequency used: 			
Input impedance: 		
CMMR: 			
Resolution: 			
Acquisition frequency:		
Sensitivity: 			
Aaccuracy of measurement*:
variable
standard with clip connection
min: 16mm - max: 66mm
8h of use
some days stand-by
some months deep sleep
rechargeable, lithium ion
14x41,5x24,8mm mother electrode
diameter 16x12mm satellite electrode
13g battery included
ISM band
2.4GHz (standard IEEE802.15.4)
>10 GOhm
>110 dB @ 50-60Hz
16bit
up to 4KHz
1μV
± 2%
Receiving Unit
Autonomy: 			
Battery: 			
up to 24h with rechargeable battery
up to 9h with single battery
rechargeable, lithium ion
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Dimensions: 			
Weight: 			
Frequency used: 			
Display: 			
appendix
155x106x35mm
360 grams
ISM band
2.4GHz (standard IEEE802.15.4
and IEEE802.11b)
4” VGA color touch-screen
* The system is calibrated at the factory. No further calibration is required
BTS internal coding
Name of device, components, parts and/or
accessories as per product label
FREEEMG 300
Pocket PC with Stylus
Acquisition unit
Belts and armbands for attachment to patient
• 16 EMG probes
FootSwitch/Electrogoniometer Wireless Probe
Foot switches: Insole individual foot switches for
the automatic identification of the gait events.
Electrogoniometers: Sensors for the measurement
of joint angles progress over the time.
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Identifier for
device (bar code,
catalogue, model
or part number)
FREEEMG 300
FRESPU12
BTS FREEEMG
Name of device, components, parts and/or
accessories as per product label
Identifier for
device (bar code,
catalogue, model
or part number)
Fine-Wire adapter : Adapter for the Fine-Wire
electrodes.
FRESPU23
O-Port expander : Digital to Analogue EMG data
converter.
FREALG16
EMGenius: software application to acquire,
elaborate and report electromyography and
footswitch signals
EMG-Analyzer: software application for EMG
signal analysis
Docking station
Charger
EMGE0901
SMAN0901
FRESPU05
FRESPU06
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appendix B
environmental specifications
Operating Temperature
Min
-20°
Max
+45°
Operating Humidity
50%
80%
0°
+40°
50%
80%
0m
2000m
Storage and Transport
Temperature
Storage and Transport
Humidity
Altitude
Note
Relative,
non-condensing
Relative,
non-condensing
Degrees of protection provided by the dangerous enclosures of water and
dust (IEC 60529): IPX0.
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appendix C
power supply and switch off
The medical power supplier TR30RAM050 provided with the system has
the following functionality:
- Provide power to the Receiving Unit and recharge its battery.
-Guarantee the galvanic insulation of the Receiving Unit from the power.
To switch off the system the following operation must be done:
- Stand-By of the Receiving Unit:
1) push the graphical button “MENU” and then select “Exit” to quit the
application.
2) set the Receiving Unit state on “stand-by” by clicking on the switch
-on/off button of the PDA.
- Stand-By of the Probes:
place the probes on the “Charger” or “Docking Station”.
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appendix D
battery
BTS FREEEMG 300 is an internally powered device: several of its
components use batteries as indicated below.
The Probe battery replacement can be done only by BTS qualified
personnel.
The probes are sealed to avoid the access to the internal circuit
components.
Batteries are equipped with battery protection circuit to:
-over-voltage, threshold 4.3V
-under-voltage, threshold 2.8V
- short-circuits
The specific characteristic of the different components of the system
equipped with the battery are:
- Receiving Unit
Quantity: 		
1 per each unit
Technology: 		
lithium ion (Li-Ion)
Removable: 		
yes, by removing the PDA from the acquisition
unit
- Wireless Probes
Quantity: 		
Technology: 		
Removable: 		
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1 per each EMG or FSW/EGN probe		
lithium polymer (Li-Poly)
NO, BTS technical service is required
appendix
BTS FREEEMG
- Docking Station (optional)
Quantity: 		
1 for each unit
Technology: 		
lithium polymer (Li-Poly)
Removable: 		
NO, BTS technical service is required
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BTS FREEEMG
appendix E
declaration of conformity
DECLARATION OF CONFORMITY
BTS SpA
Via della Croce Rossa 11, 35129 Padova (PD)
– Italy
Tel. +39 049 981 5500
Fax +39 049 792 9260
declare under our sole responsibility that the product(s):
name / description:
model:
S/N:
Electromyographic system / device for recording myoelectrical activity.
FreeEMG300
SN
satisfies the essential requirements of the Medical Devices Directive 93/42/EC (and its amendments inluding
2007/47/CE), and therefore carries the CE marking of the European Union. The conformity assessment procedure is
according to the article 11 of the directive (Annex II.3 full quality assurance) and the article 12 it is not applicable.
In accordance with Annex IX of the 93/42/EC directive it is classified as follow:
CLASS “IIa” (rule 10)
In accordance with IEC 60601-1 is also classified as follow:
Class: internally powered device
Applied part type: BF
The product conforms to the following standards:
EN ISO 14971
Medical Devices - Application of risk management to medical devices.
IEC 60601-1
Medical Electrical Equipment - Part 1: General Requirements for basic safety and
essential performance.
IEC 60601-1-2
Medical Electrical Equipment - Part 1-2: General requirements for basic safety and
essential performance - Collateral standard: electromagnetic compatibility Requirements and tests.
IEC 60601-1-6
Medical Electrical Equipment - Part 1-6: General Requirements for basic safety and
essential performance - collateral Standard: Usability
EN 62304
Medical device software - Software life-cycle processes
ETSI EN 301 489-3 Electromagnetic compatibility and Radio spectrum Matters (ERM) – Electromagnetic
Compatibility (EMC) – standard for radio equipment and services – Part 3: Specific
conditions for Short-Range Devices (SRD) operating on frequencies between 9 KHz and
40 GHz.
ETSI EN 301 440-2 Electromagnetic compatibility and Radio spectrum Matters (ERM) – Short Range Devices
(SRD) – Radio equipment to be used in the 1 GHz to 40 GHz frequency range – Part 2:
Harmonized EN covering essential requirements of Article 3(2) of the R&TTE Directive.
This compliance is valid ONLY for the equipment identified when used in a manner consistent
with the intent of the referenced documents and according to the product’s usage manual.
Notified Body : TÜV Product Service GmbH, Zertifizierstelle, Ridierstrasse 65, 80339 München – Germany, Identification N. 0123.
EC certificate N. G1 12 10 65301 003 valid until January, 16 2018.
Padova, Date
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Bruno Ros
CEO
BTS S.p.A.
BTS FREEEMG
appendix F
troubleshooting guide
1708 Error – Incorrect IP address or port set up
The software uses IP address parameters and communication ports to create network connections between the Workstation and the PDA.
In the case of incorrect configuration, the correct parameter values need
to be re-input.
To do this, launch the software that you are going to use and then, by the
menu voice “Laboratory” select “Set Emg Device”.
Verify that the IP address and the port setting are correct.
The values to specify are the following:
IP Address:
Port:
192.168.1.2
8000
and if a second receiving unit is available:
IP Address:
Port:
192.168.1.3
9000
If necessary, correct the values and click on “Upgrade” before closing the
windows.
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appendix
1709 Error – Impossibility to connect to the unit
One or more Wi-Fi network resources (Access Point, Workstation, PDA)
are not available.
In general, we recommend some simple checks as follows:
- Access Point
Check they are correctly connected to the power supply and
switched on.
Try switching the AP off and then back on. Since some models are
not fitted with an On/Off switch, it may be necessary to remove
and reinsert the power cable.
If on the rear of the model there is a selection button, verify it is
on position AP
- Workstation
If the Workstation is fitted with a Wi-Fi interface, check it is
active and connected to “BTSFREEEMG300”.
As the connection is through the AP, check that the LAN (local
area network) is active.
- BTS FREEEMG 300
The Wi-Fi connection is active only when the BTS FREEEMG
300 is in Remote Mode or in Download Mode.
From the main screen choose one of these two mode.
If the connection is still not activated, also with all these settings,
please contact the BTS Customer Care.
Backup restoring
The backup restoring procedure allows the reloading of the
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appendix
BTS FREEEMG
“BTSFREEEMG300” software and the restoring of the standard
configuration of the Pocket PC. This is very useful, for example, when
the PDA battery goes completely dead. If this happens, when the PDA
is switched on, the software “BTSFREEEMG300” won’t be loaded and,
instead of it, a screen will appear in which the system will ask the user to
execute some start-up operations.
In this circumstance, before proceeding with the restoring
procedure, it is necessary to complete the start-up operations
required by the system that consists in the execution of some
simple exercises like the stylus pointing, to execute a copy and
paste, etc...(for further details refer to the PDA manual).
When all these operation are finished, the windows main screen
will be visualized and it will be possible to proceed with the
restoring of the last backup.
To restore the backup follow these instructions:
• select “Start” and then “Programs”
• among the installed programs, choose “iPAQ Backup”:
• click on “Restore Now” to restore the last backup, the PDA
will restart and then the “BTSFREEEMG300” software will be
reloaded
• at this point, exit from the application to set the date and the
time, to do that select the date under the voice “Start”.
For further details about the time and date setting refer to the
PDA manual.
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appendix
Receiving unit hardware reset
In case the PDA blocks during use and does not respond to any commands,
you must perform an hardware reset operation.
To do that follow these instructions:
• place the receiver on a plane;
• grip with your right hand the PDA stilus;
• using index and middle finger of your left hand push the two
buttons (marked by the icons keypad and arrow) positioned at
the right of the PDA display and simultaneously, with your right
hand, insert the stylus in the hole on the right side of the PDA,
as shown in the figure below:
Immediately the system will be rebooted;
• when the PDA will switch on again the software
“BTSFREEEMG300” won’t be loaded and, instead of it, a
screen will appear in which the system will ask the user to execute
some start-up operations; complete the operations required that
consists in the execution of some simple exercises like the stylus
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appendix
BTS FREEEMG
pointing, to execute a copy and paste, etc...(for further details
refer to the PDA manual).
• when all these operation are finished, wait for the windows main
screen to be visualized;
• finally proceed with the restoring of the last backup procedure
described in the previous paragraph.
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BTS Bioengineering Corp.
147 Prince Street - Suite 11
11201 Brooklyn NY
USA
info: +1 347 204 7027
helpdesk: +1 646 575 0426
www.btsbioengineering.com
info@btsbioengineering.com
BTS S.p.A.
viale Forlanini 40
20024 Garbagnate M.se MI
Italy
tel +39 02 366 490 00
fax +39 02 366 490 24

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History When                    : 2010:01:20 15:53:03+01:00, 2010:01:20 15:53:03+01:00, 2010:01:20 16:14:34+01:00, 2010:01:20 18:01:53+01:00, 2010:01:20 18:36:50+01:00, 2010:01:21 12:02:39+01:00, 2010:01:21 15:05:37+01:00, 2010:01:21 17:22:49+01:00, 2010:01:21 17:24:26+01:00, 2010:01:21 18:16:15+01:00, 2010:01:21 18:24:43+01:00, 2010:01:22 15:14:32+01:00, 2010:01:22 15:31:10+01:00, 2010:02:08 16:11:13+01:00, 2010:02:11 13:56:54+01:00, 2010:02:11 14:00:45+01:00, 2010:02:11 14:06:31+01:00, 2010:02:11 14:08:51+01:00, 2010:02:11 14:11:09+01:00, 2010:02:11 14:23:52+01:00, 2010:02:11 14:35:14+01:00, 2010:02:11 15:03:07+01:00, 2010:02:11 15:04:26+01:00, 2010:05:05 14:11:13+02:00, 2010:05:06 14:53:57+02:00, 2010:05:06 15:01:30+02:00, 2010:05:06 15:08:53+02:00, 2010:05:06 15:10:30+02:00, 2010:05:06 15:12:19+02:00, 2010:05:14 10:11:13+02:00, 2010:05:14 10:23:27+02:00, 2010:05:14 10:48:58+02:00, 2010:05:14 12:18:44+02:00, 2010:05:14 12:22:06+02:00, 2010:05:14 12:48:36+02:00, 2010:05:14 15:22:18+02:00, 2010:05:14 15:24:54+02:00, 2010:05:14 15:27:46+02:00, 2010:05:14 16:07:43+02:00, 2010:05:17 16:48:55+02:00, 2010:05:17 17:17:28+02:00, 2010:05:17 17:20:25+02:00, 2010:05:17 17:28:34+02:00, 2011:06:13 13:59:42+02:00, 2011:06:13 16:57:18+02:00, 2011:06:15 11:03:06+02:00, 2011:06:15 11:51:45+02:00, 2011:06:15 11:57:22+02:00, 2011:06:15 12:05:38+02:00, 2011:06:15 12:07:35+02:00, 2011:06:15 13:19:30+02:00, 2011:06:15 13:54:48+02:00, 2011:06:15 13:56:45+02:00, 2011:06:15 14:00:44+02:00, 2011:06:15 14:09:22+02:00, 2011:06:15 15:16:57+02:00, 2011:07:06 12:46:27+02:00, 2011:07:06 15:37:57+02:00, 2011:07:06 15:52:26+02:00, 2011:07:06 15:54:22+02:00, 2011:07:06 15:55:06+02:00, 2011:07:06 16:00:27+02:00, 2011:07:11 14:15:46+02:00, 2011:07:11 14:15:46+02:00, 2011:11:25 18:07:20+01:00, 2011:11:25 18:13:43+01:00, 2011:11:25 18:22:17+01:00, 2012:01:24 14:02:04+01:00, 2012:01:24 14:02:04+01:00, 2012:01:24 14:19:27+01:00, 2012:01:24 14:28:55+01:00, 2012:01:24 15:53:21+01:00, 2012:01:25 16:09:34+01:00, 2012:01:25 16:30:47+01:00, 2012:03:14 15:59:19+01:00, 2012:03:14 16:46:09+01:00, 2012:03:14 18:22:02+01:00, 2012:03:14 18:25:19+01:00, 2012:03:28 10:19:35+02:00, 2012:03:28 10:21:31+02:00, 2012:03:28 10:22:14+02:00, 2012:03:28 10:22:14+02:00, 2012:10:03 16:30:42+02:00, 2012:10:03 16:30:43+02:00, 2012:10:03 16:35:16+02:00, 2012:10:03 16:41:21+02:00, 2012:10:03 16:42:23+02:00, 2012:10:03 16:42:23+02:00, 2012:10:09 17:51:21+02:00, 2012:10:10 15:32:47+02:00, 2012:10:10 15:55:11+02:00, 2012:10:10 15:56:19+02:00, 2012:10:10 17:04:54+02:00, 2012:10:10 17:06:44+02:00, 2012:10:10 17:06:45+02:00, 2012:10:10 17:10:51+02:00, 2012:11:22 17:41:59+01:00, 2013:01:28 14:44:53+01:00, 2013:01:28 14:44:53+01:00, 2013:01:28 16:13:05+01:00, 2013:01:28 17:04:38+01:00, 2013:01:28 17:06:01+01:00, 2013:01:28 17:06:02+01:00, 2013:01:28 17:47:17+01:00, 2013:01:28 18:21:53+01:00, 2013:01:28 18:25:03+01:00, 2013:01:28 18:28:42+01:00, 2013:01:29 10:39:33+01:00, 2013:01:29 10:51:48+01:00, 2013:01:29 11:23:31+01:00, 2013:01:29 11:26:42+01:00, 2013:01:29 11:29:50+01:00, 2013:01:29 12:06:38+01:00, 2013:01:29 12:09:49+01:00, 2013:01:29 12:11:59+01:00, 2013:01:29 13:58:35+01:00, 2013:01:29 14:00:53+01:00, 2013:01:29 14:01:47+01:00, 2013:01:29 14:01:48+01:00, 2013:06:10 16:54:16+02:00, 2013:06:10 16:56:23+02:00, 2013:06:10 17:03:50+02:00, 2013:06:14 12:11:29+02:00, 2013:06:14 12:15:42+02:00
History Software Agent          : Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0
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Manifest Placed Resolution Unit : Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches, Inches
Manifest Reference Instance ID  : uuid:C47219A248EFDC11A4A1E704FA923036, uuid:0874192e-3ec4-224c-8722-f0dfdec48631, uuid:C47219A248EFDC11A4A1E704FA923036, xmp.iid:090B01C76E226811B4A7E490DFA0546F, uuid:CC9FA6A79BD6DE1196008D7E915F331F, uuid:F305D5157E88DD11A0AAD51BACFA7445, uuid:E3BE151DB1D6DE1196008D7E915F331F, uuid:8BD0846AB2D6DE1196008D7E915F331F, uuid:d4dd54c9-ca4b-11da-a027-d979a7b9ea11, uuid:FAB625A7B9D6DE1196008D7E915F331F, xmp.iid:93E5807A75206811B38B95575EA56492, uuid:1AE21560924DDD11AB52A2E436EB60A9, uuid:20E21560924DDD11AB52A2E436EB60A9, xmp.iid:A8C3AED4B1206811993BCA25D14D4B7A, uuid:BA351DEFB688DD11A0AAD51BACFA7445, uuid:B4351DEFB688DD11A0AAD51BACFA7445, uuid:9ebe73d5-3a40-8841-a696-afd60b6cc4ef, xmp.iid:909C37587F206811B38B95575EA56492, uuid:958b3718-423b-11da-b86e-bf20ec40c5f1, uuid:eaa8f5b7-02a8-11db-84b2-eb5e03a573d1, uuid:c1ebd737-2375-11da-8b8d-cf95e0f15102, xmp.iid:090B01C76E226811B4A7E490DFA0546F, uuid:CAE2489B11E8DE11A28C9104D7B2C53A, uuid:B9E9BD720FD7DE1196008D7E915F331F, uuid:CBDA5D495FDADE11A13EDDF0B9FDD3F7, uuid:553F3D92BDDADE11A13EDDF0B9FDD3F7, uuid:1A2DA05E46DADE11A13EDDF0B9FDD3F7, xmp.iid:A2C3AED4B1206811993BCA25D14D4B7A, uuid:1AE21560924DDD11AB52A2E436EB60A9, uuid:20E21560924DDD11AB52A2E436EB60A9, uuid:22be300d-397a-11da-94f4-a1e00becf48e, xmp.iid:E3524075CA206811994CA1DEECF91079, xmp.iid:A22DC6791A216811994CA1DEECF91079, uuid:e13899f5-2f94-11dc-b3b3-c93bd40a8c8f, uuid:50304C7B2191DD11B3A4EE04533C421F, uuid:ea5b9c46-2626-11dc-8558-c50dadee84da, xmp.iid:A6C3AED4B1206811993BCA25D14D4B7A, uuid:0d95dd92-ea10-fa46-9832-036c54b5cb8f, xmp.iid:A82DC6791A216811994CA1DEECF91079, uuid:f5d8e17a-6363-11df-824c-00112437f484
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Doc Change Count                : 11634
Format                          : application/pdf
Producer                        : Adobe PDF Library 9.0
Trapped                         : False
Page Count                      : 130

EXIF Metadata provided by EXIF.tools