BTS BTSWAUX Wireless Auxiliary sensor for EMG system User Manual 01e
BTS SpA Wireless Auxiliary sensor for EMG system 01e
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User Manual 01e
BTS FREEEMG user manual english version 3.1.0e Document Number : ERFNC-00782-01e Published: October 2010 Copyright © 2010 BTS SpA. All Rights Reserved. BTS FREEEMG contents contents icons, symbols and acronyms disposal (WEEE) intended use 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 on-of analysis (optional) electrogoniometers (optional) charger docking station installation user PC minimum coniguration installation of the Wi-Fi interface description of the software on the user PC switching on BTS FREEEMG 300 10 13 14 14 16 19 19 20 22 24 28 29 30 31 33 38 38 38 40 41 BTS Bioengineering BTS FREEEMG contents irst connection connection check correct data visualization check acquisition protocol create a new protocol itting 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 “Conig” button “Exit” button BTS FREEEMG 300 updating updating the onboard software creating a backup image maintenance and cleaning 43 43 45 47 47 52 55 55 55 59 60 63 64 67 70 72 74 86 90 92 101 102 102 103 105 appendix A – technical speciications wireless probes receiving unit 107 107 107 BTS Bioengineering contents BTS FREEEMG appendix B – environmental speciications appendix C – power supply and switch of 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 BTS Bioengineering 109 110 111 113 114 114 115 115 BTS FREEEMG icons, symbols and acronyms Symbol in the instructions for the function. he icon represents the information which requires special attention. Symbol in the instructions for the function. his icon makes reference to a more detailed discussion of the subject in hand. 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). he equipment belongs to Group 8 (medical equipment). In force in the nations of the European Union, Norway and Switzerland. BTS Bioengineering BTS FREEEMG icons, symbols and acronymi Symbol on the equipment: Attention, read the information in the users’ manual carefully before using the equipment. Symbol on the equipment: he data appearing next to the manufacturer’s symbol refer to the place of manufacture of the equipment itself. Symbol on the equipment: he igure 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. Symbol on the equipment: Symbol located next to the series number on the equipment. BTS Bioengineering icons, symbols and acronyms BTS FREEEMG Symbol on the equipment: CE mark with the code of the Notiied Body. he CE mark certiies that the product conforms to the standards applicable in the member states of the European Union (see Declaration of Conformity). Symbol on the equipment: he double square indicates that the product is a Class II device according to EN 60601-1. The device must be operated with the provided power supply unit. Radio equipment identification EMG probes: FCC ID: YQH-BTSWEMG IC: 9188A-BTSWEMG FSWEGN probes: FCC ID: YQH-BTSWAUX IC: 9188A-BTSWEMG 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. Acronyms used in this manual: AP Access Point AU Acquisition Unit EMG Electromyography FSW Footswitch PDA RU WS Personal Digital Assistant Receiving Unit Workstation BTS Bioengineering BTS FREEEMG 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. his equipment belongs to Category 8 (medical equipment) and is classiied in the Business-to-Business sector. he symbol of the crossed out rubbish bin indicates that the equipment must not be disposed of in normal domestic waste. he regulations for disposal may difer between individual countries in the EU. In cases of doubt, refer to the respective sales outlet. his 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. BTS Bioengineering BTS FREEEMG intended use his equipment is an instrument for the EMG surface analysis, classiied as medical equipment in accordance with European Directive 93/42/CE (and its amendments). he BTS FREEEMG 300 must always be used only for this purpose, by qualiied persons, in an environment suitable for the execution of EMG analyses and respecting the prevailing regulations in the countries in which it is being utilised. Acquisition Unit Regulatory label ,3 ;8 ;9 ! 99#99#99 8* , : 4* ' ., * : 4 & % ( 4 * 5 7 4* ' . 4* ' . * ' * ' , "" /01# " 2 3# "" - ') '' - *8 =, * 4 .( * * '5 7 '99 / : ** 0 6- * 0 1/ - : 6 ) = + 6 !## -9 >/ - 7 8 6- * 0 - 6 1+ 6- * 0 1 / 0 *, * - * / !## 234$ # 5 - + Wireless Probes Regulatory labels (not on actual probes due to size constraints) BTS Bioengineering *7 8 BTS FREEEMG warnings We recommend to carry out any kind of operation keeping strictly to the security regulations contained in this manual. 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 qualiied and authorized personnel, according to the laws in force in the nation it is in use. he 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. he uses of the device for other purposes and with methodologies diferent from of those indicated in this manual are not to be considered congruent with the precise use of the device. - Use the product according to the usage that it has been intended. - 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. - To not wet or dip in water the parts that make up the system. 10 BTS Bioengineering warnings BTS FREEEMG - Apply the probes only on undamaged skin. - 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. - In case the device accidentally falls, tear of the probes or other accidents always address authorized technical support. - Do not undertake any kind of internal maintenance of the device: in case of need always address to authorized technical support. - he use of any components diferent from the original ones declines the conformity of the device. - he 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). - 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. - In addition to the users’ instructions, the prescriptions regarding accident prevention and technical regulations regarding occupational safety must also be complied with. BTS Bioengineering 11 BTS FREEEMG warnings he appertaining national regulations and standards of the country of use, with regards prevention of accidents and environment, are an extension of the users’ instructions. - BTS FREEEMG 300 is a device that is able to function CONTINUOUSLY, 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. he information contained in this manual is subject to change without notice and does not constitute product speciications or any obligation on the part of BTS S.p.A. 12 BTS Bioengineering BTS FREEEMG copyright he software of the system described in this manual is supplied with the “licence to use” contract. he 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 speciied, 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. his publication contains reserved information which is the property of BTS S.p.A. he 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. BTS Bioengineering 13 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 ields 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, ampliication 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 deicits, use of ortheses, rehabilitative follow-up, and to optimize sports training programmes,... BTS FREEEMG 300 is generally supplied with Myolab the easy to use BTS software programmes for displaying, processing and reporting electromyograph signals. BTS Myolab is an extremely lexible solution with numerous analysis tools available making it possible to perform even advanced elaborations of, 14 BTS Bioengineering introduction BTS FREEEMG for example, the study of myoelectric manifestations of localized muscle fatigue, even for cyclical movements. BTS EMGenius and BTS EMG-Analyzer are also available as option: • BTS EMGenius is the application software for functional evaluation of cyclical movements such as ambulation, through automatic identiication of gait phases, and in movements such as “hand to mouth, “sit-to-stand”, lexion-extension of the hand, reaching, etc... BTS EMGenius has been designed and developed to be easy to learn how to use in very short time: he friendly and intuitive interface makes the analysis laboratory immediately productive. • BTS EMG-Analyzer is the most complete software solution for analysing electromyographic signals. It includes predeined templates for evaluations in the clinical, sports, and research ield: Jump, plyometrics, walking, fatigue analysis, isokinetic, etc... BTS EMG-Analyzer also has an editor for creating elaboration protocols: thanks to an innovative object interface, that translates the biomechanical analysis language into graphical form, the user can develop quickly and efectively customized analysis protocols. BTS FREEEMG 300 seamlessly integrates with BTS motion analysis systems, through the SMART (and ELITE) dedicated software. BTS Bioengineering 15 BTS FREEEMG introduction 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 (identiicative labels available in 4 diferent colors) • Access Point • Set of disposable electrodes 16 BTS Bioengineering introduction BTS FREEEMG • Probes Chargers: • up to 2 “Charger” units: each charger handles up to 8 probes and 2 FSW/EGN). he second unit is included in the standard kit only for FREEEMG with at least 12 probes, or available as an option. • he optional “Docking Station” version is also available • Accessories • USB-PDA cable • Manuals • BTS FREEEMG 300 user manual complete of CD •AC adaptor (RoHS conform) • HP iPAQ PocketPC manual and Companion CD BTS Bioengineering 17 BTS FREEEMG Optional components: • Footswitch Kit • 2 FSW/EGN Wireless Probes introduction • 2 Connectors of 4 Switches • 10 single Switches • Electrogoniometer Kit • 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. 18 BTS Bioengineering BTS FREEEMG system components BTS FREEEMG 300 electromyograph consists of a receiving unit which utilises a PocketPC platform and wireless probes designed and developed by BTS SpA. Physical description power button (on/of) 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 blu = WiFi Active) 2 LED - charging and notiication indicators (blinking amber = charging; solid amber = full charge) 3 VGA color display 4 antenna 5 service slot 6 grip wireless probes BTS Bioengineering 19 BTS FREEEMG system components Acquisition unit he acquisition unit consists of: • a digital card • a receiver card • a plastic casing • a guide for the PDA insertion. he 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-conigure and to carry out a self-diagnosis. In addition to serving as a Compact Flash interface the card allows control 20 BTS Bioengineering system components BTS FREEEMG of the receiver card and handles acquisition of data coming from the probes. he 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. he 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 two 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 4 electrogoniometers (each EGN occupies 2 analogue channels). In particular, the following probe combinations are possible: EGN EMG FSW 1-2 3-4 up to 16 probes up to 12 probes up to 8 probes 2 probes of 4 switches 2 probes of 4 switches 2 probe of 4 switches BTS Bioengineering 21 BTS FREEEMG system components PDA (Personal Digital Assistant) HP iPAQ hx4700 Pocket PC is based on Microsoft® Windows®. It uses the Intel® PXA270 processor and the new translective 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 itted 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 iles to be stored, while the 1800 mAh lithium ion battery ensures longer uninterrupted use of the Pocket PC. 22 BTS Bioengineering system components BTS FREEEMG For further details please refer to the HP iPAQ hx4700 Pocket PC Manual included. BTS Bioengineering 23 BTS FREEEMG system components Wireless EMG Probes BTS FREEEMG 300 utilises miniaturised probes with active electrodes weighing less than 9 grams. he special design ensures maximum space-saving and comfort for the patient who is free to move around without obstacles. he probes can be hooked on directly to the pre-gelled electrodes without requiring additional ixing with plasters or double-sided tape. his 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 coniguration with one receiving unit). 5 7 LED mother electrode satellite electrode mother electrode clip satellite electrode clip lexible cable probe ID Each probe consists of a mother electrode and a satellite electrode, each itted with a clip. he two parts, connected via a lexible cable, may be positioned as needed by the user at adjustable distance (electrodes with variable geometry). 24 BTS Bioengineering system components BTS FREEEMG In the mother electrode there are the A/D converter, the antenna and the battery. In the satellite electrode there is the Signal Conditioning (preampliier and ilter) and is reported the probe ID. All probes are also equipped with a solid state memory bufer, to prevent data loss for problems due to the Wi-Fi network or due to exceeding the useful operating range. Each probe is itted with an LED indicating its state. he probes can be in one of a number of diferent states: • Charge: steady red LED. During recharging the red LED is on, the probe is completely passive and does not respond to any command. When the battery is fully recharged or when the probe is removed from the charger, if suiciently recharged it passes to the “Inactive” mode. • Inactive: green 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 green LED is lit continuously. • Active-Scanning: green LED which cyclically lights for a few seconds. In this mode the probe is searching for a patient unit on the channel assigned during the activation phase. At intervals of BTS Bioengineering 25 BTS FREEEMG system components about 3 seconds its carries out a scan of the frequencies. During the scan the green LED lashes quickly. • Active-Connected: Green LED which lashes slowly. When the probe and the receiving station establish a connection, the green LED begins to pulse slowly: the probe is waiting for commands. If the connection is interrupted, the probe returns to “Active-Scanning” mode and attempts to re-establish the connection. • Active-Capturing: Green LED which lights and goes out at regular intervals. During acquisition the green LED lashes 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. • Probe discharged: LED is of. If the probe is completely discharged the LED does not display any lashing cycle and is of. he probes are charged by a dedicated charger to which the probes are connected via their respective clips. 26 BTS Bioengineering system components BTS FREEEMG Refer to the cover of the charger to identify the correct polarity. he probes cannot be recharged if the polarities are inverted. he EMG probes can be used also to acquire the EMG signal by means of Fine-Wire electrods. With this aim, there are available, in option, adaptors allowing for the connection with Fine-Wire electrods. he EMG probes can be connected to them using the clips. Each adaptor can be ixed to the subject by means of proper elastics. For these applications the acquisition frequency must be setted on 4 KHz (the giudelines recommend for Fine-Wire electrods an acquisition frequency major or equal to 2 KHz). BTS Bioengineering 27 BTS FREEEMG system components FSW/EGN Wireless Probes (optional) For collecting the on-of 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. he probe will work diferently if used with one or the other probe and will receive from the same receiving unit information on its work modality during activation. he probe consists of a single parallelepiped-shaped block. he upper face has an ID tag characterized by a colour (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). he 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). 28 BTS Bioengineering system components BTS FREEEMG he one on the other side is for the probe connections (FSW or EGN). Finally, the ID identiier of the probe is on the bottom left corner of the back side. On-of analysis (optional) he footswitches are useful in deining the contact points during the contact phases of deambulation. he 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. he compact size of the instrument permits a maximum of lexibility 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 inger), 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. BTS Bioengineering 29 BTS FREEEMG system components he 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. Electrogoniometers (optional) he electrogoniometer is an easy to use device that allows the measurement of joint angle progress over time. here are primarily two types of electrogoniometers: the potentiometer and the strain gauge. BTS FREEEMG 300 uses the strain gauge electrogoniometer of Biometrics LTD. here 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. he strain gauge electrogoniometers are made up of two sensors, connected to each other, that are ixed to the bone segments involved in the joint to value. he measure of the angle is provided by the relative angle between the axes of the two sensors and, unlike the potentiometric electrogoniometers, 30 BTS Bioengineering system components BTS FREEEMG 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 4 electrogoniometers. he electrogeniometer 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 he Charger, included with the product, charges the FREEEMG probes. he Charger can simultaneously charge 8 EMG probes and 2 FSW/EGN probes. BTS Bioengineering 31 BTS FREEEMG system components Two units are provided for systems with more than 12 channels More units can be connected in series for simultaneous power supply through the same AC adapter, using the cable included. he 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 igure below: For correct connection simply follow the outline of the probes shown on the base of the Charger. he 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. 32 BTS Bioengineering system components BTS FREEEMG he charging status of the probes is indicated by the status LED of the probes (see § “Wireless Probes”). When connecting the probes to the Charger (connected to the mains and turned on) if they are charged less than 90% they will be automatically reset; to use them again for acquisitions you need to repeat the activation procedure. Docking Station (optional) As in alternative to the Charger an optional Docking Station is available. his 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. BTS Bioengineering 33 BTS FREEEMG system components he 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 igure: he 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. he 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 34 BTS Bioengineering system components BTS FREEEMG suiciently charged by unplugging it from the power supply unit and turning it of and then back on. here are two ways to recharge the probes: • using the medical power supply unit from the network • using the internal battery he irst 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 batter of the unit itself. he 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. he Docking System is equipped with an “Activate” button and 3 status LEDs: “Charge”, “Battery” and “Power”. BTS Bioengineering 35 BTS FREEEMG system components he “Activate” button allows immediate activation of all the probes connected to the Docking Station and selected to activate 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 probe will immediately scan the radio frequencies and enter immediately in communication with the receiving unit. he “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 veriied in this case: • Status LED of the RED probe on: he probe is charged less than 90% • Status LED of the RED probe of: he probe is more than 90% charged but still not complete. It is important to remember that RED LED of the probe stays on until it is 90% charged. his 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 of: indicates that all probes are fully recharged. • BLUE LED on: indicates that the “activate” button has been pressed and the probes are active. In this case the probes are not powered by the Docking Station but by the probe’s battery. he “Battery” LED is an indicator of the state of the auxiliary battery 36 BTS Bioengineering system components BTS FREEEMG and consists of a two-tone RED- GREEN LED, whose signals have the following signiicance: • LED of (both the RED light and the GREEN light are of): 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. he “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 suiciently charged. he 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.. he 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. BTS Bioengineering 37 BTS FREEEMG installation User PC minimum coniguration 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 he real time data transmission between the BTS FREEEMG 300 and the Workstation occurs thanks to the Wi-Fi network. his 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. he 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. he 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. 38 BTS Bioengineering installation BTS FREEEMG 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 he access point included in the system is already conigured with the network name (SSID) “BTSFREEEMG300” with transmission on channel 6. he base coniguration 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. BTS Bioengineering 39 BTS FREEEMG installation Description of the software on the user PC he BTS portfolio has 3 applications dedicated to electromyography: • BTS Myolab: general purpose tool for acquisition, display, processing, and reporting of electromyographic signals and joint angle measurements. • BTS EMGenius (optional): system for the functional evaluation of cyclical movements, such as walking. his software is designed to use in clinics, ofering automatic procedures, guided and consolidated, targeted especially at cyclical analysis (using a Footswitch). • BTS EMG-Analyzer (optional): A complete and highly lexible solution for making advanced elaborations of electromyographic signals and angular measurements of body segments. Includes predeined templates for evaluations in clinics, sports, and research and an editor to develop customized elaboration protocols. For more details concerning the use of these software, please refer to their speciic manuals. 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. he SMART Analyzer software allows to perform advanced elaborations of the EMG signals, integrating the electromyography information with the 40 BTS Bioengineering installation BTS FREEEMG cinematic and kinetic data. It is possible to construct customized analysis protocols complete of advanced multimedial report. Switching on BTS FREEEMG 300 he 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 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. he recharge of the battery and the transfer of data with the USB can also be done through the speciic 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 of. BTS Bioengineering 41 BTS FREEEMG installation 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. 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: 42 BTS Bioengineering installation BTS FREEEMG First Connection he BTS FREEEMG 300 is supplied with the onboard PDA software preinstalled and conigured. In any case for the irst connection we suggest to perform some veriications. Connection check he user PC communicates with the BTS FREEEMG 300 by means of Wi-Fi protocol trought the Access Point (see § “Installation of the Wi-Fi Interface”). Verify that the local net resources are laid out, like assumed in the coniguration of default according to BTS, the PC user IP address must assigned automatically by the Access Point. Verify the software coniguration installed on the PC. To do so, launch the program that you want to conigure and on the menu bar at the voice “EMG Device” select “IP and Port Conig”. BTS Bioengineering 43 BTS FREEEMG installation 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 ind on the front of the BTS FREEEMG 300 and that presents the Wi-Fi logo ( ), will result on (solid blue). 44 BTS Bioengineering installation BTS FREEEMG During the start-up of the Remote mode diferent 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 application that you want to use (for example Myolab. 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 lashing 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 defaul 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. BTS Bioengineering 45 BTS FREEEMG installation After checking the electromyograph channels, if the system is also 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 irmly 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 4), 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. 46 BTS Bioengineering BTS FREEEMG acquisition protocol Create a new protocol Now we will describe how to create a new protocol using the Myolab software (standard equipment). he procedure may be diferent if performed with other applications. In this case, refer to the speciic manual of the software you are using. To create a new protocol select “Prepare protocol” from the menu voice “FREEEMG” of Myolab. A window will open, which allows to create or modify protocols. BTS Bioengineering 47 BTS FREEEMG acquisition protocol With BTS FREEEMG 300 it is possibile to acquire: - up to 16 analog channels: electromyographic signals - EMG (each EMG employs 1 analog channel), electrogoniometer signals - EGN (each EGN employs 2 analog channels) - 8 on-of analysis areas - FSW. Refer to § “Acquisition unit” for the detailed list of probe combinations possible. If you are working with two receiving units the FSW will always be assigned to the irst unit. In this case the protocol preparation window will appear as shown below: To create a new protocol: 48 BTS Bioengineering acquisition protocol BTS FREEEMG - in case a protocol has already been loaded it is possible to empty out all the ields of the table for the protocol creation by clicking on the “Clear All” button -select the current ield, i.e. “Field 1” - enable the ield putting the check near “Enable” - choose the probe type “Channel type” to associate to the ield selected among the available options Note that the protocols to use with BTS FREEEMG 300 must contain only EMG, EGN, FSW, however if you select EMG it can only be the Surface type. - specify the ield “Signal description”, clicking on the arrow to enter the list - select the body side which the signal is refering to - click on the “Assign” button. BTS Bioengineering 49 BTS FREEEMG acquisition protocol If all these operations are correctly executed, in corrispondence of the current ield the label name of the acquiring signal will appear (i.e. R_ ADD, Right Adductor Longus). Repeat the described operations for every signal that belongs to the protocol. he FSW must be put in the right side of the list. To modify the information of a ield already inserted, click on the correspondant “Field”, select the channel type and the side and click on “Assign”. he current ield is modiied. To delete the information in one ield, choose the equivalent “Field” and click on the “Clear ield” button. To modify an existing protocol: - in the box “Select Protocol” the protocols previously created on the PC are saved, click on the arrow and select the desired protocol. - for the addition or modiication of the signals, follow the procedures recommended for the protocol creation. - to return to the original protocol (the one selected in “Select protocol”) delete the changes done clicking on “Reload Protocol”. When every signal of the protocol is inserted, proceed saving the protocol, following these instructions: - indicate a name for the protocol specifying it on the “Protocol Name” box - it is possibile to insert also a short description of the protocol 50 BTS Bioengineering acquisition protocol BTS FREEEMG using the appropriate box “Description” - make sure that the BTS FREEEMG 300 is in the Lab Modality (to access this modality from the main page, click on the “Remote” button; if two BTS FREEEMG 300 units are being used, make sure that both the unit have the Remove Mode activated) - click on “Write by WiFi” to save the protocol on the PC and transfer it 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 connected to. For example, if a protocol with 10 EMG channels has been created ( 8 associated with the irst unit, 2 with the second) and the footswitches, the protocol on the irst unit will register 8 EMG channels and the FSWs, while the protocol on the second unit will register only 2 EMG channels. Only the enable signals (“Enable” checked ) will be memorized in the protocol. If for example a 4 signals plus FS protocol has already been deined to create a protocol including only the 4 EMG signals it is enough to remove the checks on “Enable” from the FS ields. If required it’s possibile to transfer the protocol through a cable: - connect the PC and the RU through a USB-PDA cable - click on “Write Protocol” to save on PC and transfer the protocol on the BTS FREEEMG 300. BTS Bioengineering 51 BTS FREEEMG acquisition protocol Fitting the patient Carefully prepare the skin of the subject in the area to be examined before positioning the pre-gelled electrodes on the muscles. Note that the condition of the skin where the electrodes are applied inluences the quality of the acquired signal. herefore 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. hanks to the special hardware architecture of the probes and the much reduced weight, normally no extra ixing 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 ixed to the skin of the subject used tape 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. 52 BTS Bioengineering acquisition protocol BTS FREEEMG 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 stif 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. 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. hroughout 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 possibile also to compare two channels at a time using the “Cross check” function (see § “Guide to the use of the onboard software”). BTS Bioengineering 53 BTS FREEEMG acquisition protocol After making all the checks, it is possible to procede with the acquisition session. 54 BTS Bioengineering BTS FREEEMG 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”, “Conig”, “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 he “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 speciic channel. Click on this button to call up the following display: BTS Bioengineering 55 BTS FREEEMG guide to the use of onboard software he probes are divided by type: EMG, up to 16 probes for collecting electromyographic signals, FSW, up to 4 probes for collecting basographic signals (up to 2 can be selected at the same time), and EGN, up to 4 probes for collecting signals from the electrogoniometers. A number (or letter) and the colour 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” identiication code, the code shown on the clip of each probe and vice versa: 56 BTS Bioengineering guide to the use of onboard software BTS FREEEMG 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 conigurations can be activated (for the detailed list of possible conigurations, see § “acquisition unit”). his procedure will be guided by the software disabling, upon reaching a coniguration limit, all the checkboxes that can no longer be selected, furthermore, in the notiication area at the bottom, any time the maximum coniguration for a type of probe (EMG, EGN, or FSW) is reached, a warning message will appear as shown in the following igure: BTS Bioengineering 57 BTS FREEEMG guide to the use of onboard software Before proceeding to activation, connect the probes to the Charger (or to the Docking Station) included, use two units if required. his 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 suiciently 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: he 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. 58 BTS Bioengineering guide to the use of onboard software BTS FREEEMG 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 recognised and activated, it will be highllight by a green rectangle, as showen in the following igure: When all the EMG, EGN and FSW probes selezionate risultano attive, are indicated as activated, click “Stop” to terminate the activation procedure. Finally, click “Exit” to return to the initial screen. Selecting the work mode he irst two buttons (Red and Yellow) allows the user to select the desired BTS Bioengineering 59 BTS FREEEMG guide to the use of onboard software 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 60 BTS Bioengineering guide to the use of onboard software BTS FREEEMG he side arrows (Toggles) can be used to change the active ield. he up and down buttons make it possible to: • change the value in the active ield • navigate around the main menu he menu button opens the main menu Status Bar he 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 • he status of the FSWs (steady green LED if at least 1 FSW probe is active and recognised by the system) • battery level Main Menu Clicking on the “menu” button of the buttons bar you enter the main menu. here are two menus: one for the Holter mode and one for the Lab mode. he two are diferent for the items: “Database” and “PlayBack” which exist soley in the Holter mode. BTS Bioengineering 61 BTS FREEEMG guide to the use of onboard software Lab Mode Menu Holter Mode Menu he 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 usnig 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 62 BTS Bioengineering guide to the use of onboard software BTS FREEEMG 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. he following describes the menu functions starting from the ones that you can ind both in the Holter Mode and in the Lab Mode that have the same characteristics. Protocol his 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. he protocol you select will be highlighted in blue. BTS Bioengineering 63 BTS FREEEMG guide to the use of onboard software Probes Setup When a new protocol is deined, 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 • he “Probes” area he table, for each signal of the acquisition protocol, previously selected in the “protocol” section shows: • the identiier of the assigned probe (comprised of the colour and number/letter of the label), if no probe has been assigned the ield is set on “--” • the type of probe: Surface, Footswitch, Electrogoniometer,... • the state of the probe: • OK: Signal/probe properly assigned, the probe has been 64 BTS Bioengineering guide to the use of onboard software BTS FREEEMG 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 diferent colours: • Green: the selected probe in the activator is connected to the RU and is assigned to a protocol signal (the “Status” ield 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” ield 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 BTS Bioengineering 65 BTS FREEEMG guide to the use of onboard software • 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” ield 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” ield 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 ields (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 66 BTS Bioengineering guide to the use of onboard software BTS FREEEMG 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 conirm that the “Status” of each protocol voice is OK. Digital Oscilloscope (gain) With BTS FREEEMG 300 the user can set up to 3 diferent ranges of values to see the muscular contractions better. To setting this value see § “ Conig” Button”. he selectable values are: • S1: 6,34mV; • S2: 3,17mV; • S3: 1,62mV. 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 BTS Bioengineering 67 BTS FREEEMG guide to the use of onboard software set in the coniguration section. To do this, simply view via the oscilloscope the real-time muscular activity of each muscle you would like to analyse for a few seconds, asking the patient to perform several contractions. If the intensity of the muscle is very low, so that it is diicult 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. herefore select the value that lets you best see the channels simultaneously without saturation. If the selected range is insuicient 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 digitalisation of the acquisition card. 68 BTS Bioengineering guide to the use of onboard software BTS FREEEMG he 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 afects 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 diferent signals, click on the Toggle to activate the “Signal” active ield 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 ield (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 efect 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. BTS Bioengineering 69 BTS FREEEMG Active ields (Toggle) Signal Time guide to the use of onboard software Value range (Select) Protocol signals 1 sec - 10 sec Oscilloscopio digitale (cross check) he 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. he 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 lexor. 70 BTS Bioengineering guide to the use of onboard software BTS FREEEMG his 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 lexor 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” ield with the Toggle and scroll the signal list included in the protocol using the Up and Down buttons. he current display can be enlarged or reduced via the zoom function: this does not afect in any way the data being read. he “Time” ield can be used to vary the speed at which the signal runs on the screen (again, this has no efect on the reading, but only on the display). It is possible to ix 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 ields (Toggle) Signal 1 Signal 2 Zoom Time Value range (Select) Protocol signals Protocol signals From 1/10 to x10 From 1 sec to 10 sec BTS Bioengineering 71 BTS FREEEMG guide to the use of onboard software Footswitches he 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 ambulation. Four points have been identiied for this purpose in order to be able to distinguish the foot tread while walking. hese 4 areas are: 72 BTS Bioengineering guide to the use of onboard software BTS FREEEMG • 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” • ,... he 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 inger 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 igure 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 possibile to acquire the data independently of the WS. Session preparation: selecting “Local” you can enter the patient’s database on the palm. BTS Bioengineering 73 BTS FREEEMG guide to the use of onboard software 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 ield to insert • insert the value with the keypad, (each tap on the gender ield will change from F to M and viceversa) • press OK to insert the patient into the database 74 BTS Bioengineering guide to the use of onboard software BTS FREEEMG 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 conirm 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. BTS Bioengineering 75 BTS FREEEMG guide to the use of onboard software 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. he 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 diferent protocol it is necessary to create a new acquisition session for that patient. 76 BTS Bioengineering guide to the use of onboard software BTS FREEEMG 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 conirm 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. BTS Bioengineering 77 BTS FREEEMG guide to the use of onboard software 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 conirm 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 inished 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. 78 BTS Bioengineering guide to the use of onboard software BTS FREEEMG A screen will appear, which gives the setup for that acquisition: For every test it’s possibile 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 conirm or on “Cancel” to come back to the previous screen without saving the text just typed. BTS Bioengineering 79 BTS FREEEMG guide to the use of onboard software To modify the other acquisition parameters select the relative ield with the Toggle and then use the Up and Down buttons. Active ields (Toggle) Acq. Frequency Flag Value range (Select) 1KHz, 2KHz, 3KHz, 4KHz MMT, Resting, Walking, Undeined, Extra If you want to process the acquired tests using Myolab Clinic, the “Flag” ield must be diferent from “Undeined”. All the other BTS Software don’t make use of this data. he acquisition starts by clicking on the “Start” button. At the start-up of the acquisition the BTS FREEEMG 300 automatically goes into Lock mode, showing the following: To unlock the palm click on the “Unlock” button, this will immediately move to another position. To complete this procedure it is necessary to 80 BTS Bioengineering guide to the use of onboard software BTS FREEEMG 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. he “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: BTS Bioengineering 81 BTS FREEEMG guide to the use of onboard software To save data on BTS FREEEMG 300 select “Store” whereas to cancel the data just acquired click on “Delete”. In this case a conirmation 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: 82 BTS Bioengineering guide to the use of onboard software BTS FREEEMG 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 ield “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 ields “Zoom” and “Time” selecting them with the Toggle and changing their value with the Up and Down buttons. In particular the “Zoom” ield allows increasing or reducing the current view area (it acts on the axis of ordinates), while the “Time” ield 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. his 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” ield. BTS Bioengineering 83 BTS FREEEMG Active ields (Toggle) Signal 1 Signal 2 Zoom Time # Trial guide to the use of onboard software 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 irst 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 igure 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 irst frame (like in the example in the igure 0:21). herefore, if the “Time” ield 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. 84 BTS Bioengineering guide to the use of onboard software BTS FREEEMG 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 conirm 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 Myolab he data acquired in Holter mode is saved in a local database in the BTS FREEEMG 300. To execute the elaboration and the analisys of the data, you need to import the test using the software Myolab software. To do this, proceed as described further in § “Download button”. BTS Bioengineering 85 BTS FREEEMG guide to the use of onboard software “Remote” button: Lab mode In this mode the connection between RU and WS is always available. he speciic 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: his 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. 86 BTS Bioengineering guide to the use of onboard software BTS FREEEMG his 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” ield 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 Myolab software. To know the download procedure consult the manual of Myolab. 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 conirmation 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. BTS Bioengineering 87 BTS FREEEMG guide to the use of onboard software Once deleted the ile, the “Arm” button appears again and the “Data” ield will again become “None”; so it’s possibile 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 ields (Toggle) Acq. Frequency Value range (Select) 1KHz, 2KHz, 3KHz, 4KHz 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. At this level it is not possible to change the acquisition frequency. 88 BTS Bioengineering guide to the use of onboard software BTS FREEEMG Tapping on the “Cancel” button the previous screen appears, returns control to the RU. To procede 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: he acquisition starts-up through the remote control, directly by the Workstation. his display will remain on the BTS FREEEMG 300 until the acquiring session is over. It’s possibile to interrupt the acquisition remotely and proceed with the next ones. At the end of every acquisition an automatical data download will be BTS Bioengineering 89 BTS FREEEMG guide to the use of onboard software executed. Only at the end of the download is it possibile 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 speciic 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 Myolab 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: 90 BTS Bioengineering guide to the use of onboard software BTS FREEEMG • From Myolab, select the “Download” item from the “FREEEMG” 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 iles that you are interested in. For further details concerning the data download refer to the user manuals of Myolab software. he 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 inished on the BTS FREEEMG 300 keep pressing the “Exit” button to go back to the main screen. BTS Bioengineering 91 BTS FREEEMG guide to the use of onboard software “Conig” button he “Conig” button launches an application that allows the modiication of some system settings. It uses ive tabs to reach the diferent 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 identiier of each EMG and FSW/EGN probe to its label identiied by colour and number/letter; setting of the signal range; setting the radio channels utilising the probes. • Database: Datbase managment. • Maintenance: section permitted only to BTS Technician staf, 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 conirm all the changes made. 92 BTS Bioengineering guide to the use of onboard software BTS FREEEMG 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 “Conig” 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. BTS Bioengineering 93 BTS FREEEMG guide to the use of onboard software General Selecting “General”, the following screen will be visualized: It is possible to set: • he language • “DHCP”, for automatic host coniguration, 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 of on Capture”: if checked, the display automatically will switch-of at the acquisition beginning. To activate the screen again a click on one of the PocketPC button is enough • he use of a Secure Digital memory card to store the temp ile generated during the acquisition (check this voice only if there is a Secure Digital board in the related port). 94 BTS Bioengineering guide to the use of onboard software BTS FREEEMG Radio When “Radio” is selected the following page is displayed: he “EMG probes” and “FSW/EGN probes” sections allow to associate the ID that uniquely identiies each probe manufactured by BTS S.p.A. with the probe’s label. he 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 4 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. BTS Bioengineering 95 BTS FREEEMG guide to the use of onboard software 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 colour of the probe’s label (the colours can be Red, Green, Blue, and Yellow) using the drop down menu. 96 BTS Bioengineering guide to the use of onboard software BTS FREEEMG • 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 (identiied by the colour/ number or letter combination) has already been used the software will highlight the ID string in red. BTS Bioengineering 97 BTS FREEEMG guide to the use of onboard software From the Radio page two other sections may be accessed. he “Signal” section allows to select the Range for electromyographic signals. 3 diferent 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. 98 BTS Bioengineering guide to the use of onboard software BTS FREEEMG 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. here are two list-boxes, the irst 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 lash 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. BTS Bioengineering 99 BTS FREEEMG guide to the use of onboard software 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”. he 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”. his operation removes completely the database and all its content (patients, sessions and trials). For this reason the system will ask a conirmation before proceeding with the deletion. “Exit” button he “Exit” button allows the closing of the application and the visualization 100 BTS Bioengineering guide to the use of onboard software BTS FREEEMG of the operative system installed on the PDA. To do that it is enough to press and hold the “Exit” button for few seconds. BTS Bioengineering 101 BTS FREEEMG 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” ile, 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. he main screen will appear. 102 BTS Bioengineering BTS FREEEMG 300 updating BTS FREEEMG 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 coniguration 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. he Pocket PC will restart and then the BTSFREEEMG300 software will be automatically reloaded. BTS Bioengineering 103 BTS FREEEMG BTS FREEEMG 300 updating he backup procedure is now inished, therefore we suggest to rename the backup ile 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 ile 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 ile 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). 104 BTS Bioengineering BTS FREEEMG 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 microibre 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 suiciently 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. he BTS FREEEMG 300 cannot be sterilised. BTS Bioengineering 105 BTS FREEEMG appendix A technical speciications Wireless Probes Geometry: Electrodes: Separation: Autonomy: Battery: Dimensions: Weight: Frequency used: Input impedance: CMMR: Resolution: Acquisition frequency: Sensitivity: Accuratezza di misura*: Receiving Unit Autonomy: Battery: Dimensions: variable standard with clip connection min: 16mm - max: 66mm 5h of use some days stand-by rechargeable, lithium ion 17x36x8mm mother electrode diameter 17 x 8mm satellite electrode <9g battery included ISM band 2.4GHz (standard IEEE802.15.4) >10 GOhm >110 dB @ 50-60Hz 16bit up to 4KHz 1μV ± 2% up to 24h with rechargeable battery up to 9h with single battery rechargeable, lithium ion 155x106x35mm BTS Bioengineering 107 BTS FREEEMG Weight: Frequency used: Display: appendix 360 grams ISM band 2.4GHz (standard IEEE802.15.4 and IEEE802.11b) 4” VGA colour touch-screen * he system is calibrated at the factory. No further calibration is required 108 BTS Bioengineering BTS FREEEMG appendix B environmental speciications 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 dengerous enclosures of water and dust (IEC 60529): IPX0. BTS Bioengineering 109 BTS FREEEMG appendix C power supply and switch of he 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 of 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/of button of the PDA. - Stand-By of the Probes: place the probes on the “Charger” or “Docking Station”. 110 BTS Bioengineering BTS FREEEMG appendix D battery BTS FREEEMG 300 is an internally powered device: several of its components use batteries as indicated below. he Probe battery replacement can be done only by BTS qualiied personel. he 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 he speciic characteristic of the diferent 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: 1 per each EMG or FSW/EGN probe lithium polymer (Li-Poly) NO, BTS technical service is required BTS Bioengineering 111 BTS FREEEMG - Docking Station (opzional) Quantity: 1 for each unit Technology: lithium polymer (Li-Poly) Removable: NO, BTS technical service is required 112 BTS Bioengineering appendix BTS FREEEMG appendix E declaration of conformity BTS Bioengineering 113 BTS FREEEMG appendix F troubleshooting guide 1708 Error – Incorrect IP address or port set up he software uses IP address parameters and communication ports to create network connections between the Workstation and the PDA. In the case of incorrect coniguration, 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 “FREEEMG” select “IP and Port Conig”. Verify that the IP address and the port setting are correct. he 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. 114 BTS Bioengineering appendix BTS FREEEMG 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 of and then back on. Since some models are not itted with an On/Of 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 itted 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 he 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. BTS Bioengineering 115 BTS FREEEMG appendix Backup restoring he backup restoring procedure allows the reloading of the “BTSFREEEMG300” software and the restoring of the standard coniguration of the Pocket PC. his 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 inished, 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 Pocket PC manual. 116 BTS Bioengineering headquarters viale Forlanini 40 20024 Garbagnate M.se MI Italy tel +39 02 366 490 00 fax +39 02 366 490 24 R&D centre via della Croce Rossa 11 35129 Padova PD Italy tel +39 049 981 5500 fax +39 049 792 9260 www.btsbioengineering.com info@bts.it
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History Action : saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved, saved History Instance ID : xmp.iid:361456CB502068119D8CFB4AF82B2296, xmp.iid:371456CB502068119D8CFB4AF82B2296, xmp.iid:381456CB502068119D8CFB4AF82B2296, xmp.iid:3A1456CB502068119D8CFB4AF82B2296, xmp.iid:3C1456CB502068119D8CFB4AF82B2296, xmp.iid:3D1456CB502068119D8CFB4AF82B2296, xmp.iid:3E1456CB502068119D8CFB4AF82B2296, xmp.iid:7F4AD82CBC2068119D8CFB4AF82B2296, xmp.iid:804AD82CBC2068119D8CFB4AF82B2296, xmp.iid:814AD82CBC2068119D8CFB4AF82B2296, xmp.iid:844AD82CBC2068119D8CFB4AF82B2296, xmp.iid:03801174072068118209C6184ACF5441, xmp.iid:04801174072068118209C6184ACF5441, xmp.iid:F87F1174072068118E05A529D1043C76, xmp.iid:0180117407206811BA67DDABDCF5F87A, 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xmp.iid:C034C99B432068119BADDD8C681FFF8E, xmp.iid:D236DBF7782068119BADDD8C681FFF8E, xmp.iid:D536DBF7782068119BADDD8C681FFF8E, xmp.iid:D636DBF7782068119BADDD8C681FFF8E 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 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 History Changed : /, /metadata, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /, / Manifest Link Form : ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream, ReferenceStream Manifest Placed X Resolution : 72.00, 72.00, 72.00, 300.00, 72.00, 72.00, 300.00, 300.00, 72.00, 72.00, 72.00, 300.00, 180.00, 180.00, 300.00, 250.00, 250.00, 72.00, 72.00, 300.00, 300.00, 72.00, 72.00, 300.00, 300.00, 300.00, 180.00, 180.00, 72.00, 72.00, 72.00, 72.00, 250.00, 250.00, 300.00, 300.00, 300.00, 300.00, 72.00, 72.00, 72.00 Manifest Placed Y Resolution : 72.00, 72.00, 72.00, 300.00, 72.00, 72.00, 300.00, 300.00, 72.00, 72.00, 72.00, 300.00, 180.00, 180.00, 300.00, 250.00, 250.00, 72.00, 72.00, 300.00, 300.00, 72.00, 72.00, 300.00, 300.00, 300.00, 180.00, 180.00, 72.00, 72.00, 72.00, 72.00, 250.00, 250.00, 300.00, 300.00, 300.00, 300.00, 72.00, 72.00, 72.00 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, Inches Manifest Reference Instance ID : xmp.iid:95E5807A75206811B38B95575EA56492, uuid:C47219A248EFDC11A4A1E704FA923036, uuid:C47219A248EFDC11A4A1E704FA923036, xmp.iid:FB7F117407206811993BCA25D14D4B7A, xmp.iid:97E5807A75206811B38B95575EA56492, uuid:F305D5157E88DD11A0AAD51BACFA7445, uuid:a9f5ff10-3659-11da-9f82-e833abb14901, uuid:570fb94e-3646-11da-9f82-e833abb14901, xmp.iid:5BA349412E206811B7259391596D0D1F, uuid:CC9FA6A79BD6DE1196008D7E915F331F, uuid:E3BE151DB1D6DE1196008D7E915F331F, uuid:d4dd54c9-ca4b-11da-a027-d979a7b9ea11, uuid:FAB625A7B9D6DE1196008D7E915F331F, uuid:8BD0846AB2D6DE1196008D7E915F331F, xmp.iid:93E5807A75206811B38B95575EA56492, uuid:1AE21560924DDD11AB52A2E436EB60A9, uuid:20E21560924DDD11AB52A2E436EB60A9, xmp.iid:98E5807A75206811B38B95575EA56492, xmp.iid:A8C3AED4B1206811993BCA25D14D4B7A, uuid:BA351DEFB688DD11A0AAD51BACFA7445, uuid:B4351DEFB688DD11A0AAD51BACFA7445, uuid:B9E9BD720FD7DE1196008D7E915F331F, 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:CBDA5D495FDADE11A13EDDF0B9FDD3F7, uuid:553F3D92BDDADE11A13EDDF0B9FDD3F7, uuid:1A2DA05E46DADE11A13EDDF0B9FDD3F7, xmp.iid:A2C3AED4B1206811993BCA25D14D4B7A, uuid:1AE21560924DDD11AB52A2E436EB60A9, uuid:20E21560924DDD11AB52A2E436EB60A9, uuid:22be300d-397a-11da-94f4-a1e00becf48e, uuid:B6833A02EEEBDE11BD82DEFBCB84389D, uuid:3FF57734158BDD11A38CFC9F0BA5EC2C, uuid:e13899f5-2f94-11dc-b3b3-c93bd40a8c8f, uuid:50304C7B2191DD11B3A4EE04533C421F, uuid:ea5b9c46-2626-11dc-8558-c50dadee84da, xmp.iid:A6C3AED4B1206811993BCA25D14D4B7A Manifest Reference Document ID : uuid:EEBE5A7DA0E0DE11800E8BB4AB8F2CBD, uuid:C37219A248EFDC11A4A1E704FA923036, uuid:C37219A248EFDC11A4A1E704FA923036, xmp.did:FA7F117407206811993BCA25D14D4B7A, uuid:7FEE941195D6DE1196008D7E915F331F, uuid:F205D5157E88DD11A0AAD51BACFA7445, adobe:docid:photoshop:a9f5ff0f-3659-11da-9f82-e833abb14901, adobe:docid:photoshop:570fb94d-3646-11da-9f82-e833abb14901, xmp.did:5BA349412E206811B7259391596D0D1F, uuid:4ABD91229AD6DE1196008D7E915F331F, uuid:E2BE151DB1D6DE1196008D7E915F331F, adobe:docid:photoshop:d4dd54c1-ca4b-11da-a027-d979a7b9ea11, uuid:E19DC935B8D6DE1196008D7E915F331F, uuid:729F56A418FFDC119FF7EA092DE38A63, xmp.did:517AE39B70206811B38B95575EA56492, uuid:19E21560924DDD11AB52A2E436EB60A9, uuid:1FE21560924DDD11AB52A2E436EB60A9, uuid:08A554C4D9D6DE1196008D7E915F331F, xmp.did:A7C3AED4B1206811993BCA25D14D4B7A, uuid:378074BB7F88DD11A0AAD51BACFA7445, uuid:B3351DEFB688DD11A0AAD51BACFA7445, uuid:B8E9BD720FD7DE1196008D7E915F331F, uuid:3C128BC866E0DE11800E8BB4AB8F2CBD, adobe:docid:photoshop:c1ebd731-2375-11da-8b8d-cf95e0f15102, adobe:docid:photoshop:eaa8f5b3-02a8-11db-84b2-eb5e03a573d1, adobe:docid:photoshop:ef987683-2373-11da-8b8d-cf95e0f15102, xmp.did:ED7ACC3B65226811B4A7E490DFA0546F, uuid:C9E2489B11E8DE11A28C9104D7B2C53A, uuid:F4C89D9A5DDADE11A13EDDF0B9FDD3F7, uuid:543F3D92BDDADE11A13EDDF0B9FDD3F7, uuid:192DA05E46DADE11A13EDDF0B9FDD3F7, xmp.did:A1C3AED4B1206811993BCA25D14D4B7A, uuid:19E21560924DDD11AB52A2E436EB60A9, uuid:1FE21560924DDD11AB52A2E436EB60A9, adobe:docid:photoshop:5dcf3a01-3978-11da-94f4-a1e00becf48e, uuid:44E91A864D89DD119C59E9C04F509852, uuid:3EF57734158BDD11A38CFC9F0BA5EC2C, adobe:docid:photoshop:e13899f4-2f94-11dc-b3b3-c93bd40a8c8f, uuid:4F304C7B2191DD11B3A4EE04533C421F, adobe:docid:photoshop:ce326c64-2625-11dc-8558-c50dadee84da, xmp.did:A5C3AED4B1206811993BCA25D14D4B7A Doc Change Count : 5357 Format : application/pdf Producer : Adobe PDF Library 9.0 Trapped : False Page Count : 120EXIF Metadata provided by EXIF.tools