GAITRite® Technical Reference
Contents
1. DOCUMENT UPDATES Revision Revision Revision Level Date Description of Revision Author DRAFT 01 22 2003 Draft A 04 22 2003 Initial Release B 06 22 2008 Results of independent laboratory testing C 02 11 2010 ISO 14971 2007 risk analysis D 02 11 2011 Inserted SYNCH INPUT diagram E 04 20 2011 SYNC INPUT Errata and definitions for foot width length F 02 12 2011 Corrected Step Length Definition ECN 02122011 G 1 10 2012 GC Editorial update of technical manual and additional sections describing temporal values 4 3 21 23 H 2 24 12 GC 4 1 1 added displays and exports of right amp left and non foot specific fields noted I 4 27 12 GC 4 4 24 added definitions for SD amp CV J 6 11 2012 GC Updated definitions Ft Length amp Width SD s by R amp L not calculated K 6 13 12 GC Additional clarification of measurements definitions added based on client request Export fields appendix included L 5 6 2013 GC Updated address of manufacturer GC Correction to field name listing for Supp Base On Std Dev Right to Supp Base Std Dev Right matches updated language mdb M 11 1 2013 GC Updates all references to Firewire connector GC orange to include Blue USB3 connector based on update to hardware ref ECN731 8 21 2013 N 3 13 14 Basic grammar and consistency edits updated Meghan 3 16 2014 address re indexing of pages Byers GC O 12 6 2014 P37 SD of Toe in out not calculated GC P 3 27 2015 GC Section 2 15 water damag2. X GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 27 of 49 3 8 Metronome The metronome function of the GAITRite Interface Module provides an audible tone at pre selected rates beats minute A yellow light labeled METRONOME is associated with this function and blinks at the rate beats minute The audible tone is generated by an internal speaker located above the metronome yellow light Please avoid covering this area of the Interface Module enclosure You can enable the metronome and select the beat rate through the GAITRite software By default the metronome function is disabled Antenna Optional Intemal SPEAKER METRONOME STATUS ae ma O OUTPUT SYNC 4 A INPUT y O 3 O GAITRite POWER COMPUTER POWER INPUT Connector SYNC INPUT Connector SYNC OUTPUT Connector ipen Orange Firewire or blue USB cable depending on model Connect to GAITRite System mil USB cable Connect to Host PC USB port GAITRite Electronic Walkway Technical Reference WI 02 15 4 0 GAITRite MEASUREMENTS amp DEFINITIONS Rev P Page 28 of 49 Encapsulated within the electronic walkway are sensor pads Each sensor pad has an active area of 24 inches square 61 cm square and contains 2 304 sensors arranged in a 48x48 grid pattern The sensors are placed on 5 inch 1 27 cm centers Multiple sensor pads are connected to fo
3. GAITRite POWER G COMPUTER POWER INPUT Connector SYNC OUTPUT Connector SYNC INPUT Connector ih USB cable Connect to Host PC USB port Ea Orange Firewire or blue USB cable depending on model Connect to GAITRite System GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 18 of 49 3 5 Status Indicator A yellow light marked STATUS is utilized to display errors It blinks when a problem is encountered The blinking rate and the number of blinks are utilized by our Technical Support Department to identify the problem You are encouraged to call our Technical Support Department if you observe a blinking status light after you start a test Antenna Optional Internal SPEAKER SYNC INPUT Connector SYNC OUTPUT Connector GAITRite POWER COMPUTER USB cable Connect to Host PC USB port jm Orange Firewire or blue USB cable depending on model Connect to GAITRite System POWER INPUT Connector GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 19 of 49 3 6 SYNC Output Connection The SYNC Output connection is utilized to synchronize external systems with the GAITRite walkway such as Electromyography equipment etc Antenna Optional Internal SPEAKER METRONOME STATUS AEL o SYNC INPUT Connector SYNC OUTPUT OUTPUT Connector ew
4. 4 4 23 Heel Mid Foot and Toe Temporal Values The percentage time heel only toe only and mid foot values are determined from heel on to toes off and the mid section temporal values These values are displayed in the temporal data and are different to the contact mid stance and propulsive phases described above Heel only is the time that only the heel is on the floor Heel only Mid On Heel On Mid section is the time when the foot mid section is on the floor excludes heel toe only Mid section Mid Off Mid On Toe only is the time that only the toe is on the floor Toe Only Toe Off Mid Off Percentage values can only be calculated correctly for walks where the heel contact is the earliest foot event and the toe off is the last event 4 4 24 Means and Standard Deviations Means and standard deviation of Footfall measured events are calculated at the footfall level Means and Standard deviations SD Coefficient of Variance CV of Gait Cycle events are calculated using the summary data The SD is determined as the sample SD the root of the sums of variances from the mean divided by n 1 GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 37 of 49 1 1 IA al TF r a EN N 1 lt The Coefficient of variance is the standard deviation divided by the mean multiplied by 100 amp CY 100 a SD calculations of foot width or foot length by Left amp Right feet are not implemented
5. Fax Number Patient Fax Number Address line 1 Patient Address line 1 Address Line 2 Patient Address Line 2 City Patient City State Patient State Zip Patient Zip Country Patient Country Location Patient Location Discharge Date Patient Discharge Date Discharge Flag Patient Discharge Flag Footfall ID Pattern Code Patient Footfall ID Pattern Code Test Record GAITRite Test GAITRite Test Record number Pt Record GAITRite Test GAITRite Patient Record number GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 44 of 49 Source Data Field Name set Description Date Time of Test GAITRite Test Date Time of Test Distance GAITRite Test Distance Ambulation Time GAITRite Test Ambulation Time Velocity GAITRite Test Velocity Step Count GAITRite Test Step Count Cadence GAITRite Test Cadence Step Time sec L GAITRite Test Step Time seconds Left Step Length cm L GAITRite Test Step Length cm Left Step Time sec R GAITRite Test Step Time sec Right Step Length cm R GAITRite Test Step Length cm Right Step Extremity ratio L GAITRite Test Step Extremity ratio Left Step Extremity ratio R GAITRite Test Step Extremity ratio Right Cycle Time sec L GAITRite Test Cycle Time seconds Left Cycle Time sec R GAITRite Test Cycle Time
6. Step Len Std Dev Right GAITRite Test Step Length Standard Deviation Right GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 46 of 49 Source Data Field Name set Description Step Time Std Dev Left GAITRite Test Step Time Standard Deviation Left Step Time Std Dev Right GAITRite Test Step Time Standard Deviation Right Stride Length Std Dev Left GAITRite Test Stride Length Standard Deviation Left Stride Length Std Dev Right GAITRite Test Stride Length Standard Deviation Right Stride Time Std Dev Left GAITRite Test Stride Time Standard Deviation Left Stride Time Std Dev Right GAITRite Test Stride Time Standard Deviation Right Swing Time Std Dev Left GAITRite Test Swing Time Standard Deviation Left Swing Time Std Dev Right GAITRite Test Swing Time Standard Deviation Right Stance Time Std Dev Left GAITRite Test Stance Time Standard Deviation Left Stance Time Std Dev Right GAITRite Test Stance Time Standard Deviation Right Stride Velocity Std Dev Left GAITRite Test Stride Velocity Standard Deviation Left Stride Velocity Std Dev Right GAITRite Test Stride Velocity Standard Deviation Right Single Supp Time Std Dev Left GAITRite Test Single Support Time Standard Deviation Left Single Supp Time Std Dev Right GAITRite Test Single Support Time Standard Deviatio
7. DEFINITIONS DS1 DS2 DS3 Right Single Left Single e gt Support gt Support 4 Left Step Time Right Step Time p No Contact Left Swing Left Stance Floor Contact No Contact Right Stance Right Swing Floor Contact Right gt Right Cycle TIME Figure 9 4 4 1 First Contact It is the time that the first sensor appears in any quadrilateral It is expressed in seconds sec 4 4 2 Heel Contact It is the time that the first sensor appears in the heel quadrilateral of the foot It is expressed in seconds sec 4 4 3 Last Contact It is the time that the last sensor goes off in any quadrilateral It is expressed in seconds sec 4 4 4 Toe Off It is the time that the last sensor turns off in the forefoot quadrilateral of the foot It is expressed in seconds sec 4 4 5 Step Time It is the time elapsed from first contact of one foot to first contact of the opposite foot It is measured in seconds sec 4 4 6 Stride Time It is the time elapsed between the first contacts of two consecutive footfalls of the same foot It is measured in seconds sec 4 4 7 Gait Cycle Time It is the elapsed time between the first contacts of two consecutive footfalls of the same foot It is measured in seconds sec GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 35 of 49 4 48 Ambulation Time It is the time elapsed between first contact of the
8. Extend the line to intercept the lateral side at point L S C Y o S xs e 1 Se 3 Figure 3 set 4 Identify the front most outer sensor s sensor 4 From sensor 4 draw a line perpendicular to the medial line The two lines intercept at point G Extend the line to intercept the lateral side at point R 5 The formed quadrilateral ALRG in this case a trapezoid encloses the footprint efficiently 4 2 2 Identify Heel Mid and Toe areas Refer to Figure 3 and identify points C and E these two points divide the medial line AG into three equal spaces From point C draw a line perpendicular to the medial line and extend it in order to intercept the lateral line at point N Similarly from point E draw a line perpendicular to the medial line and extend it in order to intercept the lateral line at point P Quadrilateral ALNC contains the heel area sensors CNPE contains the mid foot area sensors and EPRG contains the toe area sensors 1 Shores M Footprint analysis in gait documentation an instructional sheet format Phys Ther 60 1163 1980 2 Silverstein LS the effect of neutral position foot orthoses on gait of children with down syndrome Doctoral Thesis PA 1993 Hahnemann University GAITRite Electronic Walkway Technical Reference WI 02 15 4 2 3 Identify the Centroid So far the footprint was divided into three quadrilaterals w
9. R GAITRite Test Double Support Load Percent Gait Cycle Right Double Support Unload Time L GAITRite Test Double Support Unload Time Left Double Support Unload Time R GAITRite Test Double Support Unload Time Right Double Support Unload GC L GAITRite Test Double Support Unload Percent Gait Cycle Left Double Support Unload GC R GAITRite Test Double Support Unload Percent Gait Cycle Right Asst Ortho etc 1 GAITRite Test User defined Asst Ortho etc 2 GAITRite Test User defined Asst Ortho etc 3 GAITRite Test User defined Asst Ortho etc 4 GAITRite Test User defined Asst Ortho etc 5 GAITRite Test User defined Type of Test GAITRite Test User defined Software Version GAITRite Test Software Version Number of Pads GAITRite Test Number of Pads Normal Group Code GAITRite Test Normal Group Code Standard Walk Steps GAITRite Test Standard Walk Steps Standard Amb Time GAITRite Test Standard Ambulation Time Stride Velocity Left GAITRite Test Stride Velocity Left Stride Velocity Right GAITRite Test Stride Velocity Right Shoe Flag GAITRite Test Shoe Flag Expected Foot Length GAITRite Test Expected Foot Length Expected Foot Width GAITRite Test Expected Foot Width Foot Length Left GAITRite Test Foot Length Left Foot Width Left GAITRite Test Foot Width Left Foot Length Right GAITRite Test Foot Length Right Foot Width Right GAITRite Test Foot Width Right Step Len Std Dev Left GAITRite Test Step Length Standard Deviation Left
10. SD calculations of Toe in out angle by Left amp Right feet are not implemented GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 38 of 49 4 5 SWITCHING LEVELS The GAITRite walkway s unique and patented sensor avoids false peripheral activation Each sensor has been constructed with two flexible elements riding on a pivot point When pressure is applied to the sensor both elements must flex around the pivot point to initiate activation otherwise the pivot point will toggle the sensor in either side without activation After activation the sensor begins to change its value linearly with the vertical component of pressure exerted upon it The walkway contains thousands of sensors therefore calibration impossible but cost prohibitive Pressure values are normalized and expressed as a percent of the Cyan maximum pressure and then divided into levels Currently there are seven switching levels illustrated in Table 1 Yellow 4 The walkway does not only sense footprints but also the relative arrangement between them ina two dimensional plane and the ee A relative vertical component of footprint The pressure is represented by a Table 1 Switching Levels Color Assignment switching level As discussed earlier the division of the footprint provides us with twelve sections six sections are located in the medial side of the footprint and six in the lateral Each section contains a number of activated sensors
11. e ETET R 35 4411 Stride Velo eenen o a en a E a e E AR 35 4 4 12 Single Support and Single Support ooooonccnncnnonnnonononconnconocononononononnnonn conan cnn connnnnncanccnnos 35 4 4 13 Initial Double Support and Initial Double Support ooocononcnoconononancnancnnnonanonncnnncanacnos 35 4 4 14 Terminal Double Support and Terminal Double SUpport ooconccincnnoninonnnonconnnanananannnos 35 4 4 15 Total Double Support and Total Double Support ooocnncconcnononononononanonanonanonnncnonononnno 35 44 16 Stance Time and StahCe ssoi esisiini eani setae ales des cbscbvaerscasans odian POREVE 35 44 17 Contact Phase ivi dcir sotvdaade cts atbeslevdes cadete lea 36 4 4 18 Midstance Phase or Foot Flat 0 0 eee eee eesceseceeeeseeseeeseesseessesseecseecseceaeeeaesseesseeeneeenees 36 44 19 Propulsive Phase cocinando da sde te A ETES 36 4420 Swing DS A ocdedevscdhanssecebeus ASE S EKE iS 36 4421 Heel O Osiris dais teat land ain dd ii 36 4 4 22 Walk Ratio iii tating thi intact Miva heh Ravi natant a ane danas 36 4 4 23 Heel Mid Foot and Toe Temporal Values ooooonnnncninoninococonancnnnaconanononaconanonnnaconnos 36 4 4 24 Means and Standard Deviations oooonocnnoconoconanonnnonnnonnnonccono nono nono nn nono nonn conan on nc nn nc nnncancninos 36 45 SWITCHING LEVELS va scss sects ennea naci dida ER EVE ENO 38 4 6 Switching Level Parameters oosonnrnnsvvvernnennnvnnnennnevnnvvnnnvnasvnvnrnvennsvenssnanveensvennnvn
12. enclosed within a trapezoid The GAITRite algorithms utilize the sectional division to identify the activated sensors included within each quadrilateral and then perform calculations to objectively describe the behavior of the section GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 39 of 49 As illustrated in Figure 11 medial trapezoid AHIB includes the following sensors 1 2 3 4 6 and 7 Lateral trapezoid HLMI includes the sensors 5 10 11 15 and 16 A sensor can be claimed by only one trapezoid and not shared by others Sensor 4 has most of its surface area within trapezoid AHIB and will be claimed only by this trapezoid If the surface area of a sensor is equally divided among two or more quadrilaterals i e Sensor 12 then the sensor will be claimed by the first trapezoid in the algorithm The results of the switching parameters are presented in the format illustrated in Table 2 Figure 11 4 6 GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 40 of 49 Switching Level Parameters P t for a section is the sectional integrated pressure over time expressed as a percent of the overall integrated pressure over time The overall P t can be found by summing the P t of each sensor sectional P t can be found by summing the P t of the sensors included in the particular sectio
13. ll GAITRite COMPUTER USB cable Connect to Host PC USB port Orange Firewire or blue USB cable depending on model Connect to GAITRite System POWER INPUT Connector 3 6 1 SYNC Output Light A yellow light marked SYNC OUTPUT is employed as a visual indicator for the functions associated with this connection Lit ON signal at connector output is logic level high Not Lit OFF signal at connector output is logic level low Default GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 20 of 49 3 6 2 SYNC Output Software Controls Logic transitions for the SYNC Output signal can be selected from a list included in the GAITRite software The options are shown below Signal at SYNC OUTPUT connector Description Default Start with SYNCOUT low During the first scan change SYNCOUT from low to high At end of test change SYNCOUT back to low When this option is selected SYNCOUT starts at level low SYNCOUT light OFF During the first scan the SYNCOUT signal changes state to level high and the light turns ON It continues in this state until an end of test at that point the SYNCOUT signal will go back to level low and the light will turn OFF Start with SYNCOUT high During the first scan change SYNCOUT from high to low At end of test change SYNCOUT back to high When this option is selected the SYNCOUT starts at level high SYNCOUT light ON During the
14. the following electrical characteristics Output Voltage Low 1V 5ma 5V 15ma Output Voltage High 5V 5ma 4V 15ma ESD protected to 15KV Connector 3 5mm Stereo Jack The diagram below provides a detailed view of the connections required at the SYNC Output connector Users can make their own interface cable to use between two systems or our company can provide you with one Please call our Technical Support Department SYNC OUTPUT connection METRONOME STATUS 3 5mm Stereo Plug _ p SG SYNC OUTPUT O a d SYNC signal OUTPUT SYNC INPUT Oo GAITRite POWER COMPUTER GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 22 of 49 3 6 4 SYNC Output Timing Diagrams START TEST UNDETERMINED DELAY SYNCOUT SCAN TIMER START SCAN TIMER TOGGLE SYNCOUT END OF SCAN1 END OF TEST TOGGLE SYNCOUT SYNCOUT low to high default trigger on first scan START TEST UNDETERMINED DELAY START SCAN TIMER TOGGLE SYNCOUT END OF SCAN1 SYNCOUT SCAN TIMER END OF TEST TOGGLE SYNCOUT SYNCOUThigh to low trigger on first scan START TEST UNDETERMINED DELAY SYNCOUT SCAN TIMER START SCAN TIMER END OF TEST END OF SCAN1 TOGGLE SYNCOUT 1ST SENSOR ACTIVITY TOGGLE SYNCOUT SYNCOUT low to high trigger on first active sensor GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 23 of
15. 0 240Hz Temporal Accuracy 1 sample Quality Test Method Each walkway is placed over existing walkway previously calibrated and compared against 3D Video System The Ambulation Time Velocity between the two systems are compared Expected Ambulation Time within 1 sample rate Expected Ambulation Velocity within 2 Walkway to Walkway Spatial Accuracy 5 1 27 cm Walkway to Walkway Temporal Accuracy 1 sample Walkway to Walkway Switching Level Accuracy 5 switching level Walkway Top Cover Flame retardant anti slip vinyl Walkway Bottom Cover Open cell neoprene rubber Internal Materials Uncoated polyesters GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 11 of 49 2 11 GAITRite Electrical Ratings Mains power quality should be that of a typical commercial or hospital environment If the user of the GAITRite Walkway System requires continued operation during power mains interruptions it is recommended that the GAITRite Walkway System be powered from an uninterruptible power supply or battery Certifications for the specified AC Adaptor can be furnished upon request Rating Specification WARNING UTILIZE ONLY THE AC ADAPTOR SUPPLIED WITH YOUR EQUIPMENT AC Adaptor 100 240V 8 4 A Input Voltage AC Adaptor 9 VDC 3 0A Output Voltage 2 12 Electromagnetic Compatibility The GAITRite System has been tested and found
16. 000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 00000 00000000 00000 00 00 0000 O SO SO OOO Mo OG 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 Figure 1 4 1 1 GAITRite Displays and Exports As the subject ambulates across the walkway the pressure exerted by the feet onto the walkway activates the sensors The walkway does not only sense the geometry of the activating objects but also the relative arrangement between them in a two dimensional space In addition the walkway senses the vertical component of the relative pressure exerted by the objects What makes the walkway valuable for gait analysis are the special algorithms built into the system The algorithms isolate the objects and identify them as footprints As a convention all fields that are computed independently of right left foot result in a single number that will normally appear in the column labeled left in the grid Numbers computed in
17. 49 3 7 SYNC Input Connection Errata 04 20 2011 This section applies to Interface Devices with Orange label and version numbers F or greater For all other versions please contact our Support Department The SYNC Input connection is utilized to capture the logic state of an external signal identified as an event by the GAITRite system Events are inserted in the data stream of the GAITRite walkway as they occur in real time Later these events will appear as time marks in the temporal parameters review Antenna Optional Internal SPEAKER METRONOME SYNC OUTPUT Connector SYNC INPUT Connector o Orange Firewire or blue USB cable depending on model Connect to GAITRite System mel COMPUTER USB cable Connect to Host PC USB port POWER INPUT Connector 3 7 1 SYNC Input Light A yellow light marked SYNC INPUT is employed as a visual indicator for the functions associated with this connection Lit ON signal at connector input is logic level low Not Lit OFF signal at connector input is logic level high Default GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 24 of 49 3 7 2 SYNC Input Software Controls The functionality of the SYNC Input port is configured and enabled from your GAITRite Software The SYNC Input port can be configured for the following ADDITIONAL HARDWARE FUNCTION REQUIRED RESULTS Mark Event GAITRite Event
18. Detail Date Time Stamp Heel X Detail Sensor Location Heel Y Detail Sensor Location Toe X Detail Sensor Location Toe Y Detail Sensor Location relative to pressure Lowest X Detail Sensor Location relative to pressure Highest X Detail Sensor Location relative to pressure Lowest Y Detail Sensor Location relative to pressure Highest Y Detail Sensor Location relative to pressure First Contact Time Detail First Contact Time Last Contact Time Detail Last Contact Time Foot Flat Time Detail Foot Flat Time Begin Time Detail Begin Time End Time Detail End Time Left Right Foot Detail Left Right Foot Step Length Detail Step Length Stride Length Detail Stride Length Base of Support Detail Base of Support Step Time Detail Step Time Stride Time Detail Stride Time Swing Time Detail Swing Time Stance Time Detail Stance Time Single Support Time sec Detail Single Support Time sec Double Support Time sec Detail Double Support Time sec Stride Velocity Detail Stride Velocity Real Foot Flag Detail Real Foot Flag Pass Number Detail Pass Number Toe In Out Detail Toe In Out Step Width Detail Step Width Stride Width Detail Stride Width Heel On Detail Heel On GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 48 of 49 Source Data Field Name set Description Heel Off Detail Heel Off Mid On Detail Mid On Mid Off Detail Mid Off Toe On Detail Toe On Toe O
19. GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 1 of 49 GAITRite Electronic Walkway Technical Reference Document Number WI 02 15 Document Filename WI 02 15 Rev P 3 27 2015 GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 2 of 49 CONTENTS 1 0 PRODUCT INFORMATION urterike ess vansveken 4 20 PEAT EIR IGS MN avden E E E 5 2 Mntended Use 2 da ti di a tds i e a 5 Did A NN 6 23 Connecting the Walkway total ar tad ad tds 7 2 4 Connection Problems sense e n Aer A 7 2 3 Service Procede ic esca 7 2 0 Clannad a ia 8 2 7 Storagecand Transporting aii ia 8 2 8 Environmental Specifications for the GAITRite System snrnonnrnonnrnennrnnenrnrrnrneenrnennrnsenrnsenrnsensnesner 9 2 9 Classification of the GAITRite System esnrnrnnrnonnrnennrnennrneenrnernrnsnnrnernrnsenrnssnrnsenrnsnnrnsrnrnssnrnsensnssner 9 2 10 GAITRite Walkway Technical Specifications 20 00 eee eescceesceesseeeeseeeseeesaeeeseessaeessaeessaeeseeeeeaeers 10 2 4 1 sGATTRite Electrical Ratings ss noi iia cacas 11 2 12 Electromagnetic Compatibility ssis orenean a a A eaa O EAE EE ERES 11 2 13 Electromagnetic Emissions Guidance and Manufacturer s Declaration ooonnconnncccnonoconcnconnncnnnnono 11 214 Walkway Disposal iii a idad 12 2 15 Water liquid damage iii adds 13 3 0 The GALT Rite Platinum trace id SLAG 14 33 Interface Ut is 14 3 2 Power Input Connection uuh sthaata db RTS ad ra 15 3 3 Comp
20. IXTURE WITH AIR OXYGEN NITROUS OXIDE WHERE SUCH GASES MAY ACCUMULATE IN CONCETRATION CLOSED SPACE 2 9 Classification of the GAITRite System Regulatory information Classification Specification Classification According to Directive 93 42 EEC as amended by Directive 2007 47 EC Class I Annex V Rule 1 Technical amp Quality Assurance IEC 60601 1 ISO 13485 2003 Classification of Equipment per IEC 606011 less Degree of Protection Against Electric Shock Tvpe B per IEC 60601 1 Y Degree of Protection Against Ingress of Water IPXO per IEC 60601 1 Mode of Operation per IEC 60601 1 Continuous Electromagnetic Compatibility and Electromagnetic Emissions Compliance see attached tests EN 60601 1 2 2002 EN 61000 3 2 2000 EN 61000 3 3 1995 Country of Manufacture USA GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 10 of 49 2 10 GAITRite Walkway Technical Specifications Parameter Walkway Specification Walkway Overall Dimensions for 10 pad walkway 35 25 x 276 x 125 250 height of electronics box 90 cm x 700 cm x 3 2 mm 6 mm height of electronics box Custom lengths are available Active Area for 10 pad walkway 24 015 x 240 15 60 96 cm x 609 6 cm Spatial Resolution 5 1 27 cm Spatial Resolution Accuracy 5 1 27 cm Sample Rate 60 80 100 120 18
21. When the switch gets pressed the yellow light will Switch with wires or go ON and a mark will be placed on the current wireless frame of the GAITRite data When the switch gets released default state the yellow light will go OFF and another mark will be placed on the current frame of the GAITRite data Mark Event with audible GAITRite Event When the switch gets pressed the yellow light will tone Switch with wires or go ON a mark will be placed on the current frame wireless of the GAITRite data and an audible tone will be generated by the GAITRite Interface Module When the switch gets released normal state the yellow light will go OFF and another mark will be placed on the current frame of the GAITRite data without generating an audible tone External System Trigger External system To synchronize the GAITRite System with an compatible with the external system the signal of the external system electrical must meet the electrical characteristics described characteristics of the below Sync Input Port detailed below On every logical transition signal edge of the signal at the SYNC INPUT the GAITRite walkway will insert a mark in the GAITRite data stream Upon review of the temporal parameters you can use the inserted marks to align the GAITRite walkway data with the data of the external system 3 7 3 SYNC Input Electrical Characteristics The SYNC Input signal includes an internal pull up resistor 2 2KOhm a
22. ach quadrilateral The line that connects point C1 to point C2 is the midline of the footprint GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 32 of 49 4 3 SPATIAL PARAMETERS amp DEFINITIONS The walkway does not only sense the geometry of the activating footprints but also the relative arrangement between them in a two dimensional space Figure 7 illustrates three footprints 4 3 1 Heel Center Points A D and G are the heel centers of each footprint 4 3 2 Line of Progression This is defined as the line connecting the heel centers of two consecutive footfalls of the same foot Illustrated in Figure 7 the line of progression is formed by connecting point A to point G 4 3 3 Stride Length It is measured on the line of progression between the heel points of two consecutive footprints of the same foot left to left right to right In Figure 7 AG is the stride length of the left foot The unit of measure is centimeters 4 3 4 Step Length It is measured along the length of the walkway from the heel center of the current footprint to the heel center of the previous footprint on the opposite foot In Figure 7 the length of line AX is the step length of the right foot while the length of line YG is the step length of the second l
23. ay Inclinometer Minimum Tilt Left to Right Inclin Max Tilt R GAITRite Test Tray Inclinometer Maximum Tilt Left to Right Inclin Max Tilt FB GAITRite Test Tray Inclinometer Maximum Tilt Front to Back Inclin Min Tilt FB GAITRite Test Tray Inclinometer Minimum Tilt Front to Back Inclin Veloc Tilt LR GAITRite Test Tray Inclinometer Velocity Tilt Left to Right Inclin Veloc Tilt FB GAITRite Test Tray Inclinometer Velocity Tilt Front to Back GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 47 of 49 Source Data Field Name set Description Inclin_SD_Tilt_LR GAITRite Test Tray Inclinometer Standard Deviation Tilt Left to Right Inclin SD Tilt FB GAITRite Test Tray Inclinometer Standard Deviation Tilt Front to Back Inclinometer2 GAITRite Test Cup inclinometer Inclin2 Avg Tilt LR GAITRite Test Cup Inclinometer Average Tilt Left to Right Inclin2 Avg Tilt FB GAITRite Test Cup Inclinometer Average Tilt Front to Back Inclin2 Min Tilt LR GAITRite Test Cup Inclinometer Minimum Tilt Left to Right Inclin2 Max Tilt R GAITRite Test Cup Inclinometer Maximum Tilt Left to Right Record Detail GAITRite Record Number Test Record Detail GAITRite Test Record Number Pt Record Detail GAITRite Patient Record Number FootFall Object Detail Foot Fall Object Number Date Time Stamp
24. ay Technical Reference WI 02 15 Rev P Page 41 of 49 5 0 WARRANTY INFORMATION 5 1 Software The software is licensed to the end user for use with the GAITRite System It may be installed on any number of computers within the purchasing organization for this application without any additional fee Copies of the software may not be resold No transfer of copyright is granted or implied by this agreement 5 2 License Key As shipped the software can run basic functions In order to access advanced functions a license key generated based on your purchase information is sent separately via carrier or email 5 3 Software Updates To obtain the latest software release please contact support gaitrite com 5 4 WARRANTY This product is warranted for 12 twelve months from date of shipment for manufacturing defects and or component failures Defective equipment will be replaced or repaired at the discretion of CIR Systems Inc Warranty will be voided by the limitations listed in this document 5 5 PROOF OF WARRANTY Please retain your invoice delivery note as proof of warranty 5 6 EXTENDED WARRANTY Extended warranty may be purchased separately by contacting our sales office 5 7 SALES AND SERVICE CIR Systems Inc Corporate Office 376 Lafayette Road Suite 202 Sparta NJ 07871 973 862 6151 888 482 2362 6 0 GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 42 of 49
25. chnical Reference WI 02 15 Rev P Page 17 of 49 3 4 GAITRite Connection The GAITRite walkway is considered an ESD Electrostatic Discharge sensitive ESD device Electrostatic discharge as high as 4000V readily accumulate on the human body and can discharge without detection Although the GAITRite walkway features CAUTION protection circuitry permanent damage may occur when subjected to high energy electrostatic discharges Therefore proper ESD precautions are recommended to avoid performance degradation or loss of functionality A cable nine feet long has one end hard wired with the GAITRite Interface Module the other end has a Firewire connector ready to plug to a Platinum GAITRite System An approved extension cable can be utilized to extend the range of this connection Note The total length should not exceed 48 feet Approved cables are available from our Technical Support Department With power applied to the GAITRite Interface Module connect this cable to the walkway The red light associated with this connection marked GAITRite indicates the status of the connection between the Interface Module and the walkway The light will not be lit OFF if the connection is successful The light will be lit ON if the connector is not plugged into the walkway or the Interface Module cannot communicate with the walkway Antenna Optional Internal SPEAKER o o AP o od Ay OUTPUT SYNC y INPUT C y
26. dependently for each foot will appear labeled as left or right 4 2 FOOTPRINT ANALYSIS The software utilizes special algorithms to automatically group sensors and form footprints Once a footprint has been formed it will be divided and the following areas will be identified 1 A quadrilateral that encloses the footprint 2 The heel mid and toe areas of the footprint 3 The centroid geometric center of each area and 4 Each quadrilateral divided into four equal quadrilaterals Each area will be examined separately GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 29 of 49 4 2 1 Identify the Quadrilateral The method for defining the quadrilateral of a footprint was first developed by Shores and later improved upon by Lisa Selby Silverstein while an automated improved version of the algorithm has been implemented by the GAITRite system The following steps refer to Figure 3 1 Identify the two most outer sensors on the medial side of the footprint sensor 1 and sensor 3 Draw the medial line the line that connects sensor 1 to sensor 3 2 Identify the two most outer sensors on the lateral side of the footprint sensor 5 and sensor 6 Draw the lateral line the line that connects sensor 5 to sensor 6 3 Identify the rear most outer sensor s sensor 2 From sensor 2 draw a line perpendicular to the medial line The two lines intercept at point A
27. e GC Appendix 8 Space requirements GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P 7 0 Appendix Export Fields Page 43 of 49 All measured and calculated fields are available for export from within the GAITRite software It is not recommended that clients manipulate the GAITRite database but rather that they export the data to Excel Source Data Field Name set Description Pt Record Patient GAITRite Patient Record number Patient ID Number Patient Patient ID Number Medical Record Patient Medical Record Number Last Name Patient Last Name First Name Patient First Name Middle Initial Patient Middle Initial Gender Patient Gender Birthdate Patient Birth date Age Patient Age Height Patient Height Weight Patient Weight Primary Doctor ID Patient Primary Doctor ID Primary Doctor Name Patient Primary Doctor Name Secondary Dr Code Patient Secondary Dr Code Secondary Dr Name Patient Secondary Dr Name Leg Length Left Patient Leg Length Left Leg Length Right Patient Leg Length Right Problem Id Code Patient Problem Id Code Problem Description Patient Problem Description Registered on Date Patient Registered on Date Last Tested On Date Patient Last Tested On Date Last FAP score Patient Last FAP score Prime Contact Name Patient Prime Contact Name Phone number Patient Phone number
28. e Test Left Right foot Step Length ratio Cycle Time Differential GAITRite Test Left Right foot Cycle time ratio Functional Amb Profile GAITRite Test FAP score Treatment Count GAITRite Test Treatment Count Footfalls GAITRite Test Footfalls Comments GAITRite Test Comments Normalized Velocity GAITRite Test Velocity normalized using leg length GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 45 of 49 Source Data Field Name set Description Leg Length cm L GAITRite Test Leg Length cm Left Leg Length cm R GAITRite Test Leg Length cm Right Number of Passes GAITRite Test Number of Passes Ambulatory Devices GAITRite Test User defined Ambulatory Aids GAITRite Test User defined User GAITRite Test User Toe In Out L GAITRite Test Angle of toe Toe In Out R GAITRite Test Angle of toe Heel Off On Time L GAITRite Test Heel Off On Time Left Heel Off On Time R GAITRite Test Heel Off On Time Right Heel Off On Perc L GAITRite Test Heel Off On Percent Left Heel Off On Perc R GAITRite Test Heel Off On Percent Right Double Support Load Time L GAITRite Test Double Support Load Time Left Double Support Load Time R GAITRite Test Double Support Load Time Right Double Support Load GC L GAITRite Test Double Support Load Percent Gait Cycle Left Double Support Load GC
29. e listed in the GAITRite Materials Specifications section of this document Local authorities may require separation of the electronic devices and recycling during disposal GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 13 of 49 2 15 Water liquid damage The walkway is intended for use inside on a dry subsurface section 2 8 Cleaning of the vinyl top surface can be performed following instructions in section 2 6 Under no circumstances should the system be allowed to get wet Water or other liquids may damage the electronics within the walkway Water liquid damage is not covered by warranty the owner is liable for repair rebuild costs In the event that the system gets wet please contact Technical Support immediately e Ensure the walkway system is not connected to electrical power before proceeding e Turn off remove the water liquid source The vinyl upper surface can be dried using a soft cloth paper towel to remove excess water 8 then allowed to air dry section 2 6 The rubber base of the walkway acts like a sponge soaking up moisture Under certain conditions the base may be air dried and the system tested thereafter this tends to be a lengthy process and should only be initiated following instructions from Technical Support If the walkway electronics are damaged depending on the extent of the damage the system may be partially or fully rebuilt approximate price of partial rebuild is 40 of
30. eft foot The step length can be a negative value if the subject fails to bring the landing foot heel point forward of the stationary foot heel point The unit of measure is centimeters 4 3 5 H H Base of Support or Base Width It is the vertical distance from heel center of one footprint to the line of progression formed by two footprints of the opposite foot In Figure 7 the height of the triangle ADG is DL which is the base width of the right foot The unit of measure is centimeters GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 33 of 49 4 3 6 Toe In Toe Out It is the angle between the line of progression and the midline of the footprint In Figure 7 theta is the angle between the mid line of the right footprint and the line of progression Angle theta is zero if the geometric mid line of the footprint is parallel to the line of progression positive toe out when the mid line of the footprint is outside the line of progression and negative toe in when inside the line of progression The unit of measure is degrees 4 3 7 Distance Traveled It is measured on the horizontal axis from the heel center of the first footprint to the heel center of the last footprint The unit of measure is centimeters 4 3 8 Leg Length LL It is measured in centimeters from the greater trochanter to the floor bisecting the lateral Malleolus Each leg should be measured separately The unit of measure is centimeters 4 3 9 Ste
31. entage of the Gait Cycle time GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 36 of 49 4 4 17 Contact Phase It begins with heel strike and continues until about 22 of the stance phase Forefoot loading A ot terminates contact phase Ho Heel Off Forefoot First Contact 4 4 18 Midstance Phase or Foot Flat It begins with the first sign of forefoot loading The end of midstance is heel lift of the support limb This occurs at about 50 of the stance Heel Strike First Contact 4 4 19 Propulsive Phase This is the final 50 of the stance phase It i E oo begins heel lift until toe off CONTACT rem PHASE SNE PROPULSIVE FOOT PHASE 4 4 20 Swing Time and Swing ae It is initiated with toe off and ends with heel Figure 10 strike It is the time elapsed between the Last Contact of the current footfall and the First Contact of the next footfall on the same foot It is expressed in seconds sec and it is also presented as a percent of the Gait Cycle of the same foot The Swing Time is equal to the Single Support time of the opposite foot 4 4 21 Heel Off On This is the heel on time for the next foot minus the heel off time for this foot 4 4 22 Walk Ratios Currently the GC is calculated by producing a ratio based on the mean values of the variable and the mean value of the gait cycles
32. entr id A E eneeedennd deel 30 4 2 4 Identify the Twelve Quadrilaterals s ooronrnrnrnvnrrvvnnnvnrnrnenrnenerenenvvnnnrervrervrrvvernenrnrernree 31 4 3 SPATIAL PARAMETERS amp DEFINITIONS rrrrrrrrornvvvrrrnrrvrrennrvrrrsnnrerrennrrsrssnrrerrsnrverrsnrrssreenner 32 4 3 1 Heel Center Ad ash 32 432 Em amp 0t Progression cistitis 32 43 3 Smide Leonor ene 32 434 Sep Lengthusnsarussakras ee RS teed 32 4 3 5 H H Base of Support or Base Width enoronorenorvrnrnrnrnrnrnrnvnnrvnnrvnnrnvnrnreenerevervrnrvrnsvrernrere 32 4 3 6 Toe In Toe Dl steen bi Nas ere 33 43 Distance Travel ido 33 4 3 8 Leg Length ED diia it 33 GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 3 of 49 439 Step Extfemity Ratio donado a ar a Raiso taai 33 43A Step Width stanse Skirenn iii i aa ei 33 43E Stride Width in e a ea E OAA E E EEEE I eR eS 33 43 12 Length Of FOO ionn ia maaa pad i 33 4 3213 Widthof Foot a ee E EAEE E EEE I eR aaas 33 4 4 TEMPORAL DEFINITIONS iinn inaa lada 34 4AT Pirst Contact casita iii RE ESI aa aS 34 AAD Heel Contactar Raai 34 443 LastContacts sorone n ar E E a Ea N E E sub E E E A aS 34 444 106 Off ienn a e eR ea r ei a A eed eee 34 O NN 34 446 Stride TIME ori Seaton ees tase Sene NES 34 447 Gat Cycle Tim co A eae eek ee ae SHE 34 4 48 Ambulation Time lira 35 4 49 Velocity moi A Ray a edn ae a a 35 4 4 10 Mean Normalized Velocity zerorren aa ear ria a a E
33. ff Detail Toe Off Heel off on Detail Heel off on Double Support Loading Detail Double Support Loading Double Support Unloading Detail Double Support Unloading 8 0 GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 49 of 49 Appendix Walkway dimensions amp required space Required Space for GA TRite Portable Walkway Active all Meters are Overall Length Minimum Floor Space Approximate Allows for Subject to take 2 steps before and after active area 14 Ft 4 3 Meters 17 Ft 5 2 Meters 23 Ft 7 Meters 16Ft 5 Meters 19 Ft 5 8 Meters 25 Ft 7 6 Meters 20 Ft 6 Meters 23 Ft 7 Meters 29 Ft 9 Meters 26 Ft 8 Meters 29 Ft 9 Meters 35 Ft 10 6 Meters WIDTH All Models are 24 inches 2 Ft 6 meters active area and overall 35 5 Inches wide 3 Ft 9 meters Inactive walkway lengths can be used to provide walk on off areas in same material as walkway
34. first and the last footfalls It is measured in seconds sec 4 49 Velocity It is obtained after dividing the Distance Traveled by the Ambulation time It is expressed in centimeters per second cm sec 4 4 10 Mean Normalized Velocity It is obtained after dividing the Velocity by the Average Leg Length and it is expressed in Leg Length per second LL sec The average Leg Length is computed left leg length right leg length 2 4 4 11 Stride Velocity It is obtained after dividing the Stride Length by the Stride Time It is expressed in centimeters per second cm sec 4 4 12 Single Support and Single Support It is the time elapsed between the Last Contact of the current footfall to the First Contact of the next footfall of the same foot Refer to Figure 9 Single Support time is equal to the Swing Time of the opposite foot It is measured in seconds sec and expressed as a percent of the Gait Cycle time of the same foot 4 4 13 Initial Double Support and Initial Double Support The two periods when both feet are on the floor are called initial double support and terminal double support Initial double support occurs from heel contact of one footfall to toe off of the opposite footfall It is measured in seconds sec and also expressed as a percent of the Gait Cycle time for the same foot Refer to Figure 9 DS1 is the Initial Double Support for the right foot while the DS2 is the Initial Double Support for the left foot 4 4 14 Term
35. first scan the SYNCOUT signal changes state to level low and the light turns OFF not lit It continues in this state until an end of test at that point the SYNCOUT signal will go back to level high and the light will turn ON Start with SYNCOUT low Upon detecting first sensor activity change SYNCOUT from low to high At end of test change SYNCOUT back to low When this option is selected SYNCOUT starts at level low SYNCOUT light OFF The SYNCOUT will remain low until the first sensor change is detected During this scan the SYNCOUT signal will change state to level high the light will turn ON and it will continue in this state until an end of test At that point the output signal will go back to level low and the light will turn OFF Start with SYNCOUT high Upon detecting first sensor activity change SYNCOUT from high to low At end of test change SYNCOUT back to high When this option is selected SYNCOUT starts at level high SYNCOUT light ON The SYNCOUT will remain high until the first sensor change is detected During this scan the SYNCOUT signal will change state to level low the light will turn OFF and it will continue in this state until an end of test At that point the output signal will go back to level high and the light will turn ON GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 21 of 49 3 6 3 SYNC Output Port Electrical Characteristics The SYNC Output signal has
36. gnenensvesenneenssnrnsnene 40 50 WARRANTY INFORMATION o 41 SL Software ie AA A A AA ee eee 41 52 TACENS KEY ci A AAA A A 41 53 Software Update iii pots ests eee eee ke LET 41 54 WARRANTY Genesee SENT 41 5 30 PROOF OF WARRANTY viste 41 5 6 EX TENDED WARRANTY ii at ER 41 JA SALES AND SER VICES 4 ocio Rc 41 6 0 DOCUMENT UPDATES an edi 42 FD Appendix Export Blelds said a a a a iia 43 8 0 Appendix Walkway dimensions amp required space ooooconococonococonacononnnononnnonanaconanananananos 49 1 0 GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 4 of 49 PRODUCT INFORMATION Product Name The GAITRite Electronic Walkway Manufacturer CIR Systems Inc Name Address 376 Lafayette Rd Suite 202 Sparta NJ 07871 Country of United States Manufacture ISO 13485 2012 AC 2012 ISO 13485 2003 Certifications CE SNCH 0499 GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 5 of 49 2 0 The GAITRite Walkway 2 1 Intended Use The GAITRite System is an electronic walkway utilized to measure the temporal timing and spatial two dimension geometric position parameters of its pressure activated sensors The GAITRite system s intent is to be utilized as a measuring device for the events occurring during biped and quadruped locomotion Inferred parameters are easily obtained by applying common physics and math formulas to the directly measured temporal and spatial da
37. inal Double Support and Terminal Double Support The two periods when both feet are on the floor are called initial double support and terminal double support Terminal double support occurs from opposite footfall heel strike to support footfall toe off It is measured in seconds sec and also expressed as a percent of the Gait Cycle time for the same foot Refer to Figure 9 DS2 is the Terminal Double Support for the right foot 4 4 15 Total Double Support and Total Double Support The two periods when both feet are on the floor are called initial double support and terminal double support Initial double support occurs from heel contact of one footfall to toe off of the opposite footfall Terminal double support occurs from opposite footfall heel strike to support footfall toe off Total double support is the sum of the initial double support added to the terminal double support It is measured in seconds sec and also expressed as a percent of the Gait Cycle time for the same foot Refer to Figure 9 The sum DS1 DS2 is the Total Double Support for the right foot while the sum DS2 DS3 is the Total Double Support for the left foot 4 4 16 Stance Time and Stance The stance phase is the weight bearing portion of each gait cycle It is initiated by heel contact and ends with toe off of the same foot It is the time elapsed between the First Contact and the Last Contact of two consecutive footfalls on the same foot It is also presented as a perc
38. is input connection is designed to accept an external transformer The AC Adaptor provides power to the Interface Module and to the GAITRite walkway and was selected with very specific characteristics Do not use power adapters and or cables other than those supplied with your WARNING GAITRite equipment If AC Adaptor failure is suspected please call our Technical Support Department for a replacement To apply power first connect the AC plug of the external transformer to the AC wall outlet mains and then insert the other end 2 1 mm plug to the Interface Module Power Input connector When these connections are done correctly the green light marked POWER will be lit ON and power is available for the GAITRite Interface Module and the GAITRite electronic walkway Specifications and certifications for the specified AC Adaptor can be furnished upon request Antenna Optional Internal SPEAKER METRONOME STATUS o SYNC INPUT O SYNC SYNC OUTPUT Connector OUTPUT Connector INPUT O GAITRite POWER COMPUTER USB cable Connect to Host PC USB port C Orange Firewire or blue USB cable 7 depending on model Connect to GAITRite System POWER INPUT Connector GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 16 of 49 3 3 Computer Connection The GAITRite walkway is considered an ESD Electrostatic Discharge sensitive ESD device Electrostatic discharge as high a
39. ith the intention of identifying the sensors for the heel mid foot and toe areas Figure 4 illustrates the heel area quadrilateral ALNC in this case a trapezoid and the sensors included in the heel area of the footprint Point C1 the centroid represents the center of the heel area The centroid is the pivot point of the two dimensional sensor structure shown in gray Figure 5 illustrates the toe area quadrilateral EPRG in this case a trapezoid and the sensors included in the toe area of the footprint Point C2 the centroid represents the center of the toe area The centroid is the pivot point of the two dimensional sensor structure shown in gray Rev P Page 30 of 49 Figure 4 Figure 5 GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 31 of 49 4 2 4 Identify the Twelve Quadrilaterals As illustrated in Figure 6 in this specific footprint the quadrilaterals form trapezoids but in other cases the quadrilaterals could form rectangles Point C1 the centroid of trapezoid ALNC represents the heel center of the footprint Point C2 the centroid of trapezoid EPRG represents the toe metatarsal center point This footprint is geometrically represented by twelve trapezoids six medial and six lateral area Quadrilaterals are formed in the two dimensional representation of the footprint in order to isolate the sensors and later perform calculations based on the isolated sensors of e
40. n Right Double Supp Time Std Dev Left GAITRite Test Double Support Time Standard Deviation Left Double Supp Time Std Dev Right GAITRite Test Double Support Time Standard Deviation Right Heel Off On Std Dev Left GAITRite Test Heel Off On Standard Deviation Left Heel Off On Std Dev Right GAITRite Test Heel Off On Standard Deviation Right Supp Base Std Dev Left GAITRite Test Support Base Standard Deviation Left Supp Base Std Dev Right GAITRite Test Support Base Standard Deviation Right Foot Length Std Dev Left GAITRite Test Foot Length Standard Deviation Left Foot Length Std Dev Right GAITRite Test Foot Length Standard Deviation Right Foot Width Std Dev Left GAITRite Test Foot Width Standard Deviation Left Foot Width Std Dev Right GAITRite Test Foot Width Standard Deviation Right Computer Time MSec GAITRite Test Computer Time MSec Trigger 10 GAITRite Test Metronome first beep time Trigger 1 1 GAITRite Test Not used Trigger 2 0 GAITRite Test Switch first time pressed Trigger 2 1 GAITRite Test Not used Trigger 1 E GAITRite Test Metronome last beep time Trigger 1E 1 GAITRite Test Not used Trigger 2 E GAITRite Test Switch last time pressed Trigger 2 E 1 GAITRite Test Not used Inclinometer1 GAITRite Test Tray inclinometer Inclin Avg Tilt LR GAITRite Test Tray Inclinometer Average Tilt Left to Right Inclin Avg Tilt FB GAITRite Test Tray Inclinometer Average Tilt Front to Back Inclin Min Tilt R GAITRite Test Tr
41. n also expressed as a percent of the overall P t As illustrated in Figure 12 P t for Sensor 1 is the total area under the curve calculated by P t s1 020 010 1 030 020 2 070 060 6 140 130 1 Peak Time for a section is the first time point that one or more sensors within a section was at the maximum switching level Assume that a section included only the two sensors illustrated in Figure 12 then the peak time is at 060 seconds Time count begins from first contact of the footprint Area of a section is expressed in centimeters squared cm and represents the sum of the active sensor areas within a section Each sensor has an area of 5 in x 5 in or 1 27 cm x 1 27 cm Peak P ressure for a section is the maximum sectional switching level expressed as a percent of the overall maximum switching level Sectional switching level occurs at the peak time of the section Assume that a section included only the two sensors illustrated in Figure 12 then peak time is at 060 seconds and a peak switching level of 6 then expressed as a percent of the overall maximum switching level lt H lt T lt J P t Peak Area Peak P lt A lt E lt F lt P t gt lt Peak lt Area gt lt Peak P gt Table 2 Switching Levels by Section N Sensor 1 Switching Levels O NOR UH DD 2 D gt No 57 D a C os Oe N Time in Seconds GAITRite Electronic Walkw
42. nd has the following electrical characteristics Input Low Voltage lt 1 V Input High Voltage gt 2 0V Max Input Voltage 5V Delay from trigger 1 frame of sampling rate External signal must be able to sink 4 ma GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 25 of 49 Minimum time low state 18 msec Minimum time high state 18 msec Max Input Frequency 30Hz ESD protected to 15KV The diagram below provides a detailed view of the connections required at the SYNC Input connector Users can make their own interface cable to use between two systems or our company can provide you one Please call our Technical Support Department 3 7 4 SYNC INPUT connection 3 5mm Stereo Plug SYNC e INPUT o SYNC i s OUTPUT signal 3 GND INPUT O I GAITRite POWER COMPUTER GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 26 of 49 3 7 5 SYNC INPUT Reporting The following diagram represents the reporting activities of the Sync Input port The state of the SYNC Input A and A1 gets reported on the First Frame always Subsequent changes of the SYNC Input get reported within one frame of occurrence SYNC INPUT FIRST FRAME STATE REPORTING ONLY ON FIRST TEST AFTER POWER UP FRAME COUNTER 1 2 3 14151617 18 19 110111112113114115 16 SYNC INPUT STATE A X 1 2 3 14151617 18 19 110111112113114115 16 D1 FRAME COUNTER SYNC INPUT STATE
43. new system price GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 14 of 49 3 0 The GAITRite Platinum Interface This document describes the use and specifications for the GAITRite Interface Module The Interface Module is not an accessory it is an integral part of the GAITRite System It supplies power to the GAITRite walkway provides the communications cabling between the GAITRite walkway and the host personal computer and provides means to interface and synchronize with external systems 3 1 Interface Utilities The GAITRite Interface Module includes standard utilities which are hard wired always enabled and available to communicate with all GAITRite software modules and versions of the GAITRite Electronic Walkway The standard utilities are e Power input connection e Cable to connect to host computer e Cable to connect to the GAITRite walkway and e Status indicator The GAITRite Interface Module includes optional utilities Optional utilities must be purchased separately and are enabled from the GAITRite Software The optional utilities are SYNC OUTPUT interface SYNC INPUT interface METRONOME XBEE RF peripheral interface Food carrying tray equipped with XBEE RF Inclinometer and Coffee cup equipped with XBEE RF Inclinometer Each utility connection will be examined separately GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 15 of 49 3 2 Power Input Connection Th
44. ocedures and connect the USB plug of the Interface Cable to an available USB port on the PC 4 Utilize ESD cautionary procedures and depending on the GAITRite model connect either the orange fire wire connector of the Interface Cable to the orange cable on the GAITRite walkway or the blue USB3 connector of the Interface Cable to the blue cable on the GAITRite walkway 5 Plug the AC Adaptor into a mains power outlet and connect the other end to the Power Input of the Interface Cable Do not use power adapters and or cables other than those supplied with your CAUTION GaITRite equipment The GAITRite walkway is considered an ESD Electrostatic Discharge sensitive ESD device Electrostatic discharge as high as 4000V readily accumulate on the human CAUTION body and can discharge without detection Although the GAITRite walkway features protection circuitry permanent damage may occur when subjected to high energy electrostatic discharges Therefore proper ESD precautions are recommended to avoid performance degradation or loss of functionality 2 4 Connection Problems If the walkway is not working properly follow these steps to determine the area of the problem 1 Check the power light on the Interface Module If it is ON lit go to Step 2 If the light is not on check the wall outlet If determined that it is working properly then contact our Customer Service department 2 Check the green power light located on the Master co
45. om the walkway s top surface The GAITRite equipment should be installed and set up in the test area prior to the arrival of any subjects Cables must be routed in a safe manner to avoid any risk of tripping subjects and users Adhesive tape can be utilized to affix cables on the floor For safety prepare the subjects by pointing out the tripping hazards posed by the perimeter height of the walkway and the routed cables For safety subjects should stand on the dead area of the walkway before beginning a test thus avoiding to trip at the entry point of the walkway The test area must be large enough for a fully unrolled walkway and also provide ample space at the beginning and end of the walkway for the subjects to safely start and finish their walk see Appendix 8 When lifting packing or relocating the GAITRite walkway make sure that you observe proper lifting for heavy items 60 120 lbs The floor of the test area must be clean and completely dry prior to unrolling the walkway Before testing subjects make sure their shoes do not have points or sharp edges that can damage the surface of the walkway Do not use damaged or frayed GAITRite equipment GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 7 of 49 2 3 Connecting the Walkway To connect the GAITRite walkway follow these steps Make sure the computer is turned on 2 Unroll the electronic walkway 3 Utilize ESD cautionary pr
46. ot fold crease or puncture the walkway as this will void the warranty e Never move the walkway without first rolling it up on the supplied drum e f you decide to allow the walkway to permanently lay on the floor then make sure you WARNING provide adequate protection from rolling heavy equipment over the walkway e f you decide to allow the walkway to permanently lay on the floor then make sure you provide adequate signs to warn the floor cleaning personnel to keep a distance while mopping the floors e f you decide to allow the walkway to permanently lay on the floor then make sure that the area will not flood during storms If uncertain please remove the AC Adaptor from the mains when the walkway is not in use GAITRite Electronic Walkway Technical Reference WI 02 15 2 8 Rev P Page 9 of 49 Environmental Specifications for the GAITRite System Condition Specification Storage amp Transportation Temperature Humidity 29 to 50 degrees C 20 to 122 degrees F Relative humidity up to 80 up to 31 degrees C decreasing linearly to 50 at 40 degrees C Operating Temperature Humidity 10 to 40 degrees C 40 to 104 degrees F Relative humidity up to 80 up to 31 degrees C decreasing linearly to 50 at 40 degrees C General Use WARNING INDOOR USE ONLY Not suitable for wet locations Flammable Gases WARNING NOT SUITABLE FOR USE IN THE PRESENCE OF FLAMMABLE ANESTHETIC M
47. p Extremity Ratio It is defined as the Step Length divided by the Leg Length of the same leg The result is an absolute number 4 3 10 Step Width It is measured from the midline midpoint of the current footprint to the midline midpoint of the previous footprint on the ore opposite foot In Figure 8 distance XY is the right mga step width while distance Xx Right Stride Width YZ is the left step width K i The unit of measure is centimeters It is the vertical distance EY gt AN Left Steo Width from midline midpoint of pS A p one footprint to the line Aoo S formed by midline midpoints of two footprints of the opposite foot In Figure 8 the height of the triangle XYZ is YP which is the stride width of the right foot The unit of measure is centimeters 4 3 12 Length of Foot It is calculated by multiplying the midline of the footprint connecting point C1 to point C2 in Figure 6 by 1 5 The unit of measure is centimeters 4 3 13 Width of Foot It is measurement of Point Q to Point F in Figure 6 The unit of measure is centimeters GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 34 of 49 4 4 TEMPORAL
48. rm the desired length of the walkway Measurements are provided using x y coordinates of sensors with distance converted to cm and time in seconds up to an accuracy of 6dp Distance may be either the distance travelled along the plane of the walkway or the calculated distance between locations on the walkway 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000000 000000000L400140000000000000000000000000000000000000000000000000 IA IATA IAS 00000 000000000000000000000000000000000000U LJ00000000000000000000000 o0000000000000000000000000000000000 OR RRR AJ00000000000000000000000 000000000000000000000000000000000000LAAA1000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000
49. s 4000V readily accumulate on the human CAUTION body and can discharge without detection Although the GAITRite walkway features protection circuitry permanent damage may occur when subjected to high energy electrostatic discharges Therefore proper ESD precautions are recommended to avoid performance degradation or loss of functionality A cable six feet long has one end hard wired with the GAITRite Interface Module the other end has a USB connector ready to plug into a standard USB 2 0 port of a host computer Note An extension cable can be utilized to extend the range of this connection The total length of this connection should not exceed 12 feet With power applied to the GAITRite Interface Module connect this cable to the USB port of your GAITRite computer The red light associated with this connection marked COMPUTER will be not lit OFF if the computer has successfully communicated with GAITRite Interface Module The red light will be lit ON if the computer cannot successfully communicate with the GAITRite Interface Module Antenna Optional Internal SPEAKER METRONOME STATUS e Ae O O ane oh O r O GAITRite POWER COMPUTER POWER INPUT Connector SYNC INPUT Connector SYNC OUTPUT Connector Orange Firewire or blue USB cable depending on model Connect to GAITRite System ZT USE cable Connect to Host PC USB port GAITRite Electronic Walkway Te
50. seconds Right Stride Length cm L GAITRite Test Stride Length cm Left Stride Length cm R GAITRite Test Stride Length cm Right HH Base Support cm L GAITRite Test Heel Heel Base Support cm Left HH Base Support cm R GAITRite Test Heel Heel Base Support cm Right Swing of Cycle L GAITRite Test Swing percent of Cycle Left Swing of Cycle R GAITRite Test Swing percent of Cycle Right Swing Time sec L GAITRite Test Swing Time seconds Left Swing Time sec R GAITRite Test Swing Time seconds Right Stance of Cycle L GAITRite Test Stance percent of Cycle Left Stance of Cycle R GAITRite Test Stance percent of Cycle Right Stance Time sec L GAITRite Test Stance Time seconds Left Stance Time sec R GAITRite Test Stance Time seconds Right Single Supp Cycle L GAITRite Test Single Support percent Cycle Left Single Supp Cycle R GAITRite Test Single Support percent Cycle Right Single Supp Time sec L GAITRite Test Single Support Time sec Left Single Supp Time sec R GAITRite Test Single Support Time sec Right Double Supp Cycle L GAITRite Test Double Support percent Cycle Left Double Supp Cycle R GAITRite Test Double Support percent Cycle Right Double Supp Time sec L GAITRite Test Double Support Time sec Left Double Supp Time sec R GAITRite Test Double Support Time sec Right Step Time Differential GAITRite Test Left Right foot Step time ratio Step Length Differential GAITRit
51. ta i e calculate velocity relationships between spatial and temporal events etc GAITRite Walkway A AC Adaptor PA Master Label A VAN RR GAITRite connection Computer USB Port connection Master Power Indicator Green GAITRite Platinum Electronic Interface 8 Metronome GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 6 of 49 2 2 Safety Instructions WARNING Make sure you have read and understood all the information listed in this document and the User s Manual If you require additional information and or training please contact our Customer Service department The company assumes that the user is trained in relevant professional fields or is familiar with the measurements provided by the GAITRite system The company assumes that you have read and understood the intended use of the GAITRite system and the safety instructions Before allowing subjects to ambulate across the GAITRite walkway the subjects must be given adequate support based on an assessment of their gait and balance abilities Barefoot testing is not recommended If the protocol requires you to test barefoot then you will have to set up your own quality procedure that follows the disinfection rules per our cleaning instructions and accounts for allergy irritation produced on the bare feet fr
52. tic discharge 6kV Contact Complies ESD IEC 61000 4 2 8KV Air Floors should be wood concrete or ceramic tile If floors are covered with synthetic material the relative humidity should be at least 30 Radiated RF IEC 3 V m 80MHz Complies 61000 4 3 to 2 5GHz Field strengths outside the shielded Conducted RF 3Vrms 150kHz Complies location from fixed RF transmitters as IEC 61000 4 6 to 80MHz determined by an electromagnetic site survey should be less than 3 V m Interference may occur in the vicinity of equipment marked with the following symbol Electrical fast transient 2kV power line 1kV Complies IEC 61000 4 4 I O lines Surge 1kV differential 2kV Complies Mains power quality should be that of a IEC 61000 4 5 common typical commercial or hospital environment Voltage dips short gt 95 dip 0 5 cycle Complies Mains power quality should be that of a interrupts and voltage variations on power supply input lines IEC 61000 4 11 60 dip 5 cycles 70 dip 25 cycles 95 dip 5 sec typical commercial or hospital environment If the user of the GAITRite Walkway System requires continued operation during power mains interruptions it is recommended that the GAITRite Walkway System be powered from an uninterruptible power supply or battery 2 14 Walkway Disposal Disposal of the walkway should be done according to the requirements of the local authorities The materials included in the walkway ar
53. to comply with the limits for medical devices in IEC 60601 1 2 These are designed to provide reasonable protection against harmful interference in a typical medical installation In the event of interference power devices from separate mains supplies and or increase physical distance between devices Contact CIR Systems Inc Customer Service if you have any questions 2 13 Electromagnetic Emissions Guidance and Manufacturer s Declaration The GAITRite Walkway System is intended for use in the electromagnetic WARNING environment specified below The customer or user of the GAITRite Walkway System should assure that it is used in such an environment Emissions Test Compliance Electromagnetic Environment Guidance RF Emissions CISPR 11 Group 2 The GAITRite Walkway System must emit electromagnetic energy in order to perform its intended function Nearby electronic equipment may be effected RF Emissions CISPR 11 Class A a ae Class B The GAITRite Walkway System is suitable for ic use in all establishments other than domestic Voltage fluctuations flicker Complies and those directly connected to the public low emissions voltage power supply network that supplies buildings used for domestic purposes GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 12 of 49 Immunity test IEC60601 test Compliance Electromagnetic Environment level level Guidance Electrosta
54. uter Connect aat kakene 16 34 GATTRite Connection snos ernro p E EE a L E EE E TEREE a L E S 17 3 5 Status Indicato snar na a a atdet E a ko debe sea Niece E E 18 36 SYNE Output Connectoren a p E E R T R E RO rS 19 3 6 1 SYNE Output Light lucio iii 19 3 6 2 SYNC Output Software ControlS ienesa oe a oc no n cnn ccnn cra coacci n 20 3 6 3 SYNC Output Port Electrical Characteristics srrsnnnrnrnvnnnnnnnvnnnrnenrnrnrvenerevervvernrernerevereen 21 3 6 4 SYNC Output Timing Diagrams ooonoonnonononononcnononnnnnnnnnnonononnnnnnnnnn einir ai 22 3D SYNE Input Connections nice 23 3 7 1 SYNC Input Didactica iodo tdci 23 3 7 2 SYNC Input Software ControlS oooonocnnonnnonononcnonconnonnconnnnnnonnncnnccono crono nono nc nan cnn conan cn nconncons 24 3 7 3 SYNC Input Electrical Characteristics oooonncnnncnonnnonnnononononanconnconocono nono nono rn nono ncnnconnconncnns 24 RA 25 31 3 SYNCINPUT Reporting meiro lidia a o E a ai less Meade Antacid nave 26 O METIO d 27 4 0 GAITRite MEASUREMENTS amp DEFINITIONS cccscscssecssesssessseeessecssecsseesseesscesseen 28 4 1 1 GAITRite Displays and Exports ronvnrnrnrnrnvnrrenenvrnrnrnrnrernrernnrvvnsvnnenresnreenasevervvernresnresnseee 28 4 2 FOOTPRINT ANAL NS Sui dadas 28 4 2 1 Identify the Quadrilateral corrieri i e aE nan cnn ncanccinoo 29 4 2 2 Identify Heel Mid and Toe areas enrnrnnrnnonrnvenrnnenrnnenrnnenrnsenrnnensnsenrnsenrnsenrnssnansnnrnsvnssens 29 4 23 Identify the C
55. ver of the GAITRite Electronic Walkway If it is not ON lit then be sure the cables are securely attached If you have determined that all cables are secured then the problem is a failure of the Interface Cable contact our Customer service department 2 5 Service Procedure The GAITRite does not contain any serviceable parts Please contact our Technical Support department GAITRite Electronic Walkway Technical Reference WI 02 15 Rev P Page 8 of 49 2 6 Cleaning Instructions The walkway requires periodic cleaning in order to prevent a build up of dirt and contaminants The correct cleaning procedures are e Before cleaning ensure that the GAITRite equipment is disconnected from the mains power outlets and any peripheral devices e The walkway may be cleaned with a damp cloth using any proprietary solution of mild detergent or disinfectant Do not use solvents or abrasives WARNING Afterward moisten a clean cloth with clear cold water and wipe the walkway surface e Allow the walkway to dry completely before use e Do not place the walkway near any flame or ignition sources and do not drop lighted cigarettes matches on or near the walkway 2 7 Storage and Transporting For storage or transporting the walkway must be properly rolled round the cardboard cylinder and placed in the storage container provided e Always lay the container on its side As indicated by the labels do not stand it on end e Do n
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