GAITRite Electronic Walkway Technical Reference
Contents
1. It is the vertical distance ES E Left Step Width from midline midpoint of one footprint to the line 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 GAITRite Electronic Walkway Technical Reference WI 02 15 Rev C Page 33 of 40 4 3 TEMPORAL DEFINITIONS IDS1 DS2 pq Right Single pq pq Left Single y i e Support Support 4 Left Step Time p4 Right Step Time No Contact Left Swing Left Stance Floor Contact Left No Contact Right Swing Right Stance Floor Contact E Right Cycle fF TIME Figure 9 4 3 1 First Contact It is the time that the first sensor appears in any quadrilateral It is expressed in seconds sec 4 3 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 3 3 Last Contact It is the time that the last sensor goes off in any quadrilateral It is expressed in seconds sec 4 3 4 Toe Off It is the time that the last sensor turns off in the forefoot quadrilateral of the foot It is expressed2. A el ra o Toe Off Last Contact Heel Off Forefoot First Contact Heel Strike First Contact CONTACT EO PHASE MID o STANCE PROPULSIVE FOOT PHASE FLAT PHASE Figure 10 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 GAITRite Electronic Walkway Technical Reference WI 02 15 Rev C Page 36 of 40 4 4 SWITHING 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 of each and every sensor is not impossible but cost prohibitive Pressure values are normalized and expressed as a percent of the Color Switching level maximum pressure and then divided into i levels Currently there are seven switching Dark Gray 1 lowest levels illustrated in Table 1 The walkway does not only sense the Light Gray 2 geom
3. 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 can not successfully communicate with the GAITRite Interface Module Antenna Optional Internal SPEAKER e SYNC INPUT O SYNC SYNC OUTPUT Connector OUTPUT Connector INPUT ib Firewire cable GAITRite USB cable Connect to GAITRite System Connect to Host PC USB port POWER INPUT Connector GAITRite Electronic Walkway Technical Reference WI 02 15 Rev C 3 4 GAITRite Connection Page 17 of 40 The GAITRite walkway is considered an ESD Electronic 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 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 utiliz
4. The unit of measure is centimeters 4 2 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 2 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 2 8 Leg Length LL It is measured in centimeters from the greater trocanter to the floor bisecting the lateral Malleolus Each leg should be measured separately The unit of measure is centimeters 4 2 9 Step 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 2 10 Step Width It is measured from the midline midpoint of the current footprint to the midline midpoint of the previous footprint on the o a opposite foot In Figure 8 d F em distance XY is the right ER step width while distance X Right Stride Width YZ is the left step width i The unit of measure is centimeters
5. 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 TOGGLE SYNCOUT END OF SCAN1 1ST SENSOR ACTIVITY TOGGLE SYNCOUT SYNCOUT low to high trigger on first active sensor GAITRite Electronic Walkway Technical Reference WI 02 15 Rev C Page 23 of 40 3 7 SYNC Input Connection 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 STATUS Ww SYNC INPUT EE o AU SYNC OUTPUT Connector BEBE P d Connector ae j SYNC 4 A INPUT O u A M GAITRite POWER COMPUTER Connect to GAITRite System Connect to Host PC USB port Firewire cable USB cable 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
6. 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 8 SYNC Input Electrical Characteristics The SYNC INPUT signal includes an internal a pull up resistor 2 2KOhm and has the following electrical characteristics Input Low Voltage 3V Input High Voltage 2 0V Max Input Voltage 5V Delay from trigger 1 frame of sampling rate GAITRite Electronic Walkway Technical Reference WI 02 15 Rev C Page 25 of 40 External signal must be able to sink 4 ma Minimum time low state 18 msecs Minimum time high state 18 msecs 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 METRONOME STATUS EL o ol o 5 A a Y A SYNC INPUT connection 3 5mm Stereo Plug SYNC INPUT SYNC signal e OUTPUT GND INPUT y o I GAITRite POWER COMPUTER GAITRite Electronic Walkway Technical Reference WI 02 15 Rev C 3 8 Metronome Page 26 of 40 The Metronome function of
7. 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 H 1 S T Q A E F Area Peak P Table 2 Switching Levels by Section I Sensor 1 Switching Levels O ND WO oc o Sensor 2 Switching Levels Figure 12 Time in Seconds GAITRite Electronic Walkway Technical Reference WI 02 15 Rev C Page 39 of 40 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 visit www 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 l
8. 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 will continue on this state until an end of test the output signal will go back to level high and the light will turn ON GAITRite Electronic Walkway Technical Reference WI 02 15 Rev C Page 21 of 40 3 6 3 SYNC Output Port Electrical Characteristics The SYNC OUTPUT signal has the following electrical characteristics Output Voltage Low 1V 2 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 one Please call our Technical Support Department METRONOME STATUS SYNC OUTPUT connection 3 5mm Stereo Plug SYNC qe SYNC OUTPUT e signal a OUTPUT SYNC INPUT o jo I GAIT Rite POWER COMPUTER GAITRite Electronic Walkway Technical Reference WI 02 15 Rev C Page 22 of 40 3 6 4 SYNC Output Timing Diagrams START TEST UNDETERMINED DELAY SYNCOUT SCAN TIMER START SCAN TIMER TOGGLE SYNCOUT END OF SCAN1
9. and Single Support sese 34 4 3 13 Initial Double Support and Initial Double Support esee 34 4 3 14 Terminal Double Support and 9e Terminal Double Support sess 34 4 3 15 Total Double Support and Total Double Support esee 34 4 3 16 Stance Tim did 46 Stance ciar eie e b e Pee Eee 34 43 17 Contact phase hee aeree neo ad 35 4 3 18 Midstance phase or Foot Flat ooooonncnnnnnncnoonconnconnconononononcnnnconc conc nnno nono nn eene nennen nennen 35 4 3 19 Propulsive phase erede t e re reta tei eee 35 4 3 20 Swing Time and 96S wing edet Re ere rte ie gebe tete ree do ege 35 44 SWITHING IEEVELS iie ete ette eee rte tette re e peteret de 36 4 Switching Level Parameters eter Pete tenta nire e eii eite erae dear 38 WARRANTY INFORMATION orte et erede cape Eu x Eee pn deer den 39 JT La TL 39 2 2 License Key needed eq d eed le ate oie deed dle et ber ds 39 3 3 Software Updates tede ed ce tele arce aedi e dV tia 39 DA WARRANTY ete e a spaniels te aedi ete eie REEF redo dn 39 53 9 PROOF OF WARRANTY 5 iicet ii aee ie eter Ee eee c io riada 39 53 0 EXTENDED WARRANTY coin spirit die este D e ete oer ede 39 3d SALES AND SERVIGE enin e ginti e e a a t VET iia 39 6 0 DOCUMENT UPDATES eie cieto eoa re AAA 40 1 0 GAITRite Electronic Walkway Technical Reference
10. illustrated in Table 2 Figure 11 GAITRite Electronic Walkway Technical Reference WI 02 15 Rev C Page 38 of 40 4 5 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 section 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 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
11. in seconds sec 4 3 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 3 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 3 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 C Page 34 of 40 4 3 8 Ambulation Time It is the time elapsed between first contact of the first and the last footfalls It is measured in seconds sec 4 3 9 Velocity It is obtained after dividing the Distance Traveled by the Ambulation time It is expressed in centimeters per second cm sec 4 3 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 3 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 3 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
12. information listed in this document and the User s Manual If you require additional information and or training please contact our Customer Service 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 setup your own quality procedure that follows the disinfection rules per our cleaning instructions and accounts for allergy irritation produced on the bare feet from 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
13. 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 C Page 24 of 40 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 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
14. 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 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 C Page 8 of 40 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 procedures and connect the USB plug of the Interface Cable to an available USB port on the PC 4 Utilize ESD cautionary procedures and connect the fire wire connector of the Interface Cable to the GAITRite walkway 5 Plug the AC Adaptor into a mains 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 GarTRite equipment The GAITRite walkway is considered an ESD Electronic Discharge sensitive device ESD Electrostatic discharge as high as 4000V readily accumulate on the human body and CAUTION can disc
15. 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 3 16 Stance Time and 96 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 percentage of the Gait Cycle time GAITRite Electronic Walkway Technical Reference WI 02 15 Rev C Page 35 of 40 4 3 17 Contact phase It begins with heel strike and continues until about 2296 of the stance phase Forefoot loading terminates contact phase 4 3 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 5096 of the stance 4 3 19 Propulsive phase This is the final 50 of the stance phase It begins heel lift until toe off 4 3 20 Swing Time and Swing It is initiated with toe off and ends with heel strike It is the time elapsed between the Last Contact of the current footfall to the First Contact of the next
16. 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 SYNC INPUT Connector b Firewire cable Connect to GAITRite System Antenna Optional Internal SPEAKER METRONOME STATUS o e cu e e GAITRite POWER SYNC OUTPUT COMPUTER POWER INPUT Connector SYNC OUTPUT Connector i USB cable Connect to Host PC USB port GAITRite Electronic Walkway Technical Reference WI 02 15 Rev C 4 0 GAITRite MEASUREMENTS amp DEFINITIONS Page 27 of 40 Encapsulated within the electronic walkway are sensor pads Each sensor pad has an active area of 24 inches square 61cm square and contains 2 304 sensors arranged in 48x48 grid pattern The sensors are placed on 5 inch 1 27cm centers Multiple sensor pads are connected to form the desired length of the walkway 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000
17. 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 AL SYNC INPUT O a SYNC SYNC OUTPUT Connector q re OUTPUT Connector SYNC 4 A INPUT M O r I Da em mum Firewire cable GAITRite COMPUTER USB cable Connect to GAITRite System Connect to Host PC USB port POWER INPUT Connector GAITRite Electronic Walkway Technical Reference WI 02 15 Rev C Page 16 of 40 3 3 Computer Connection The GAITRite walkway is considered an ESD Electronic 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 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 to 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
18. 000 EN 61000 3 3 1995 Country of Manufacture USA GAITRite Electronic Walkway Technical Reference WI 02 15 Rev C Page 11 of 40 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 90cm 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 96cm x 609 6cm Spatial Resolution 5 1 27cm Spatial Resolution Accuracy 3 5 1 27cm Sample Rate 60 80 100 120 180 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 3 5 1 270m 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 C Page 12 of 40 2 11 GAITRite Electr
19. 0000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000fJ00000000000000000000000000000000000000000000000000 Doo 00000900000000090000000000000900 0000 M55009900090000990000000 000000000000000000000000000000000000LAEER JOOOOOOO00000000000000000 000000000000000000000000000000000000LARIJCOO0000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 O OS 6000000000000000 56000000 loO00000000000000000000000000000000 0000000000000000 LLELIJOO0000000000000000000000000000 00000000000000000 MM COS E DO D ODE OO 0600600000006000000 00000 tt 515 150000000000000000000009009000000 0000000000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000
20. 0000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 Figure 1 4 1 FOOTPRINT ANALYSIS The software utilizes special algorithms to automatically group sensors and form footprints 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 build into the system The algorithms isolate the objects and identify them as footprints Once a footprint has been formed it will be divided and the following areas will be identified 1 Identify a quadrilateral that encloses the footprint 2 Identify the heel mid and toe areas of the footprint 3 Identify the centroid geometric center of each area and 4 Divide each quadrilateral into four equal quadrilaterals Each area will be examined separately GAITRite Electronic Walkway Technical Refere
21. 2 15 2 8 Rev C Page 10 of 40 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 MIXTURE 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 60601 1 Class II Degree of Protection Against Electric Shock per IEC 60601 1 Type B Degree of Protection Against Ingress of Water per IEC 60601 1 IPXO 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 2
22. 29 4 1 4 Identify the twelve quadrilaterals esee nennen enne 30 4 2 SPATIAL PARAMETERS amp DEFINITIONS eerte enne nre rennen 31 42 1 Heel Center iuh nete Died e Reese tete khe ipe rid R 31 4 2 2 Laneof ProgressiON citar ad 31 4 2 3 eStrido Leonor i 31 42 4 Step Length oreo ign erepto e re teer ener nde 31 4 25 H H Base of Support or Base Width essere 32 42 6 ToeIn Toe Qut once t d i e e ie pate e rer ria 32 42 Distance Travel diiniita i a tte ee Rt rere nen 32 42 8 LegLengtb LE accel Eee da dette oder eere ris 32 4 29 Step Extremity RatlO miocardio ea nean 32 4210 Step Widths side A 32 42 11 Stride width iud cse eda deae tesis deiade ces 32 4 3 TEMPORAL DEFINITIONS 43 trt titt e E lt reete tree 33 5 0 GAITRite Electronic Walkway Technical Reference WI 02 15 Rev C Page 4 of 40 43 1 _ Pirst Contacts ueber iere nie mh o eie 33 4 3 2 Heel Contacta epe ee peter e Re Hei 33 4 3 3 LastContact eo pe ne o p oio oe e Di geile 33 pr Toc Olinda ii 33 4 3 5 Step Dunes epe o eene pe ore der iii i 33 4 3 6 Stride Time oie eere ae epe eer pU RE Eire 33 4 3 T gt i GaitCycle Timeo iii OB D eire 33 4 3 8 Ambulation Time iei ee nue peine eno eG e m ED iei 34 439 Velocidad 34 4 3 10 Mean Normalized Velocity eronneen ra a nono nennen eren E nnne 34 43 11 Stride Velocity i ee peceie npe eee PU e e DEOR 34 4 3 12 Single Support
23. Center Points A D and G are the heel centers of each footprint 4 2 2 Line of Progression It 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 2 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 2 4 Step Length It is measured along the line of progression from the heel center of the current footprint to the heel center of the previous footprint on the opposite foot In Figure 7 line DL is perpendicular to the line of progression AG The length of line AL is the step length of the right foot while the length of line LG is the step length of the second left 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 GAITRite Electronic Walkway Technical Reference WI 02 15 Rev C Page 32 of 40 4 2 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
24. GAITRite Electronic Walkway Technical Reference WI 02 15 Rev C Page 1 of 40 GAITRite Electronic Walkway Technical Reference Document Number WI 02 15 Document Filename WI 02 15 Rev C 02 11 2010 GAITRite Electronic Walkway Technical Reference WI 02 15 Rev C Page 2 of 40 GAITRite Electronic Walkway Technical Reference WI 02 15 Rev C Page 3 of 40 CONTENTS 1 0 PRODUCT INFORMA TION veiaire i AAA E ti 3 2 0 The GAITRIte A as 6 2 A eet ete ie eH I t Hee Roe Hae P EO HR Eee ee eU 6 2 2 Safety Instructions EN 7 2 3 Connecting the Walkwa y eeen tete ee Fr te Hg ere Re eU gne dea drena casdevest erede ed 8 2 4 Connection Problems tenaces tI e e Eee e La se de He ee Hee reve egt 8 2 5 Service PrOCEdUIS euet merce p oe e Praten pet uer Pte ee gen e Qe REESE 8 2 6 Cle anime Instr ctions scere iem e ia 9 2 1 Storage and transporting sieu erect t Ns das et n e e re ta eese te 9 2 8 Environmental Specifications for the GAITRite SysteM ooooonncnnnnnnnnnonnconacononanonnonnnonnccnncnnncnnccnoo 10 2 9 Classification of the GAITRite System essent erem retener nnne 10 2 10 GAITRite Walkway Technical Specifications oooonnocnonnnocononononconnconocononononn conan cnn conc ono no eene 11 2211 GAITRit Electrical Ratings eere ia 12 2 12 Electromagnetic compatiblity ss si ekee eeit eene enne enne nennen e aE ra r DEEE a KS ETS 12 2 13 Electromagnetic Emissions Guidance and
25. WI 02 15 Rev C Page 5 of 40 PRODUCT INFORMATION Product Name The GAITRite Electronic Walkway Manufacturer CIR Systems Inc Name Address 8 John Walsh Blvd Suite 429 Peekskill N Y 10566 USA Country of United States Manufacture ISO 13485 2003 Certifications CE GAITRite Electronic Walkway Technical Reference WI 02 15 Rev C Page 6 of 40 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 data i e calculate velocity relationships between spatial and temporal events etc GAITRite Walkway A AC Adaptor S S Master Label A AM aster Labs GAITRite connection Computer USB Port connection CS Master Power Indicator Green GAITRite Platinum Electronic Interface amp Metronome GAITRite Electronic Walkway Technical Reference WI 02 15 Rev C Page 7 of 40 2 2 Safety Instructions WARNING Make sure you have read and understood all the
26. ed to extend the range of this connection Note Technical Support Department The total length should not exceed 48 feet Approved cables are available from our 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 can not communicate with the walkway SYNC INPUT Connector Firewire cable Connect to GAITRite System Internal SPEAKER Antenna Optional METRONOME STATUS S us e SYNC OUTPUT GAITRite POWER COMPUTER POWER INPUT Connector SYNC OUTPUT Connector B USB cable Connect to Host PC USB port GAITRite Electronic Walkway Technical Reference WI 02 15 3 5 Status Indicator Rev C Page 18 of 40 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 SYNC INPUT Connector t ER Firewire cable Connect
27. ents the center of the toe area The centroid is the pivot point of the two dimensional sensor structure shown in gray GAITRite Electronic Walkway Technical Reference WI 02 15 Rev C Page 30 of 40 4 1 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 points 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 each quadrilateral The line that connects point C1 to point C2 is the midline of the footprint Figure 6 GAITRite Electronic Walkway Technical Reference WI 02 15 Rev C Page 31 of 40 4 2 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 Y L X 4 2 1 Heel
28. etry of the activating footprints but also C AO the relative arrangement between them in a Cyan 3 two dimensional plane and the relative vertical OA component of pressure exerted by each Yellow 4 footprint The pressure is represented by a switching Magenta 5 level As discussed earlier the division of the footprint produces us with twelve sections six Red 6 sections are located in the medial side of the footprint and six in the lateral Each section Blue 7 highest contains a number of activated sensors enclosed within a trapezoid The GAITRite algorithms utilize the sectional division to Table 1 Switching Levels Color Assignment 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 C Page 37 of 40 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
29. g any proprietary solution of mild detergent or disinfectant Do not use solvents or abrasives Afterwards moisten a clean cloth with clear cold water and wipe the walkway surface WARNING 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 Donotfold 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 you that the area will not flood during storms If uncertain please remove the AC Adapter from the mains when the walkway is not in use GAITRite Electronic Walkway Technical Reference WI 0
30. harge 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 cover of the GAITRite Electronic Walkway if it is not ON lit then be sure the cables are securely attached If you 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 C Page 9 of 40 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 usin
31. ical 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 Adapter 100 240V 8 4 A Input Voltage AC Adapter 9 VDC 3 0A Output Voltage 2 12 Electromagnetic compatibility The GAITRite System has been tested and found 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 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 the user of the Gaitrite Walkway System should assure that it is used in such an environment Emissions Test Compliance Electromagnetic environment guidance RF Emissions CISPH 11 Group 2 The Gaitrite Walkway System must em
32. isted 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 conducting our sales office 5 7 SALES AND SERVICE CIR Systems Inc 8 John Walsh Blvd Suite 429 Peekskill NY 10566 Phone 914 734 8178 FAX 914 734 8179 GAITRite Electronic Walkway Technical Reference WI 02 15 6 0 DOCUMENT UPDATES Revision Level Revision Date D1007 616 Number Rev C Description of Revision Page 40 of 40 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
33. it electromagnetic energy in order to perform its intended function Nearby electronic equipment may be effected RF Emissions CISPR 11 Class A jedes ne Class B The Gaitrite Walkway System is suitable for z 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 Immunity test IEC60601 test Complian Electromagnetic environment level ce level guidance GAITRite Electronic Walkway Technical Reference WI 02 15 Rev C Page 13 of 40 Electrostatic 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 location Conducted RF 3Vrms 150kHz Complies from fixed RF transmitters as determined IEC 61000 4 6 to 80MHz by an electromagnetic sit 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 envi
34. line AG into three equal spaces From point C draw a line perpendicular to the medial line and extended it in order to intercept the lateral line at point N Similarly from point E draw a line perpendicular to the medial line and extended 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 Rev C Page 29 of 40 4 1 3 Identify the centroid So far the footprint was divided into three quadrilaterals with 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 4 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 repres
35. lways enabled and available to communicate with all GAITRite software modules and versions of the GAITRite Electronic Walkway The standard utilities are Power Input connection Cable to connect to host Computer Cable to connect to the GAITRite walkway and 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 C Page 15 of 40 3 2 Power Input Connection This 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
36. manufacturer s declaration sss 12 2 14 Walkway Disposal e iet een e tet e P tu a eei ate neta 13 S0 The GATFRIte Platin n IO CTACE 1 2 5 eroi tpe aet btt be OD cibo bd man 14 31 Interface Utilities s ie ec etr e e er ten N e e RS A eidem 14 3 2 Power Input COnBeCton e dete ee te e temet dt 15 3 3 Computer Connection cintas pent eee RI eoe PI er dea 16 3 5 GAITRite Connection n eec ote ene bros es ere HR RES 17 3 5 Status Indicator ed eoe eec diia 18 3 6 SYNC Output ConnectonD 3 enc o t e Rer pen 19 3 6 1 SYNC Qutput Eight une diia 19 3 6 2 SYNC Output Software Controls eese nennen nennen 20 3 6 3 SYNC Output Port Electrical CharacteristiCS ooooononnnncnnocnnonononcnnnconccanocanananonnonancnnncnncnno 21 3 6 4 SYNC Qutput Timing Diagranis erret id di 22 3 4 SYNC Input Connection re ei oe oen rote epe el e Rein 23 3 7 1 SYNC Input Llevo ti 23 3 7 2 SYNC Input Software Controls terrere tti ere io ae tene 24 3 7 5 SYNC Input Electrical Characteristics nennen nennen 24 3 87 Metfononme u acte eet hae ee et eee Bei e or eae eA RES 26 4 0 GAITRite MEASUREMENTS amp DEFINITIONS eene 27 41 FOOTPRINT ANALYSIS atre bae paa 27 4 4 1 Identity the quadrilateral cai deter eade rie erede 28 4 1 2 Identify Heel Mid and To areas sissit totesi sinesi n E e cn ron enne 28 4 1 3 Identify the centro iren eod dt ii
37. nce WI 02 15 Rev C Page 28 of 40 4 1 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 Extend the line to intercept the lateral side at point L 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 1 Wes Figure 3 S se 5 The formed quadrilateral ALRG in this case a trapezoid encloses the footprint efficiently 4 1 2 Identify Heel Mid and Toe areas Refer to Figure 3 and identify points C and E these two points divide the medial
38. opposite foot It is measured in seconds sec and expressed as a percent of the Gait Cycle time of the same foot 4 3 13 Initial Double Support and lnitial 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 DS3 is the Initial Double Support for the left foot 4 3 14 Terminal 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 3 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
39. ronment 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 1 1 6096 dip 5 cycles 7096 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 are 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 C Page 14 of 40 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 a
40. t Start with SYNCOUT low During the first scan change SYNCOUT form 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 the light turns ON It continues on this state until an end of test 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 form 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 first scan the SYNCOUT signal changes state to level low the light turns OFF not lit It continues on this state until an end of test 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 form 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 will continue on this state until an end of test 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 form High to Low
41. to GAITRite System Internal SPEAKER Antenna Optional METRONOME SYNC INPUT STATUS i i o SYNC OUTPUT o GAITRite POWER COMPUTER POWER INPUT Connector SYNC OUTPUT Connector USB cable Connect to Host PC USB port GAITRite Electronic Walkway Technical Reference WI 02 15 Rev C Page 19 of 40 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 SYNC INPUT O EXH SYNC OUTPUT Connector OUTPUT E E Connector SYNC INPUT b GAITRite POWER COMPUTER Connect to GAITRite System Connect to Host PC USB port Firewire cable USB cable 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 C Page 20 of 40 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 Defaul
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