Delsys SP-W05 Wireless EMG Sensor User Manual

Delsys Inc. Wireless EMG Sensor Users Manual

Users Manual

TRIGNO Wireless System User’s GuideSeptember 2012 Edition PM-W01Copyright © 2012 by Delsys IncorporatedSpecifications and procedures outlined in this document are subject to change without notice.Delsys Logo, EMGworks, and Myomonitor are Registered Trademarks of Delsys Incorporated.MAN-012-2-4TM
Table of ContentsTable of Contents ....................................................................... 3Important Information ................................................................. 5Intended Use........................................................................ 5Contraindications ................................................................. 5Technical Service and Support ............................................ 5Warnings and Precautions................................................... 6Device Information ............................................................... 7Disclaimer ............................................................................ 9Limited Warranty.................................................................. 9System Requirements.......................................................... 9TrignoTM Wireless EMG System Overview ............................. 10Wireless EMG Sensor........................................................ 10Sensor LED Indicator Status ....................................... 11Base Station....................................................................... 11Power Supply..................................................................... 12Getting Started with the TrignoTM System............................... 13Software Installation........................................................... 13Powering the Base Station................................................. 13Connecting the Base Station ............................................. 13Charging the Sensors ........................................................ 14Acquiring Data in EMGworks Acquisition........................... 15Sampling the Analog Outputs ............................................ 15Digital Outputs (Trigno SDK) ............................................. 15Using the Wireless EMG Sensors ............................................ 16Orienting the EMG Sensors on the Skin ............................ 16Cleaning the Sensor Site ................................................... 16Applying the Trigno Adhesive Skin Interfaces ................... 16Turning the Sensors ON .................................................... 17Trigno Sensor Status Console ........................................... 17Turning the Sensors Off..................................................... 18Using the Analog Outputs......................................................... 19Analog Output Connectors................................................. 19Channels 1-16, EMG Signals ...................................... 19Channels 1-64, all Signals........................................... 19Screw Terminal Connections....................................... 20Trigno Control Utility Software ........................................... 21Installing the Software ................................................. 21Launching the Software............................................... 21Configuration Options for Trigno System ................................. 23Accessing Configuration Options....................................... 23Trigno System Information................................................. 24
Trigno System Settings...................................................... 25Mode Control (Analog Output Software Only) ................... 26Test Panel.......................................................................... 26Additional Sensor Information .................................................. 28Sensor Pairing ................................................................... 28Sensor Factory Calibration ................................................ 29Smart Sensors ................................................................... 30Sensor Modes in EMGworks ............................................. 30Using Tandem Trigno Systems ................................................ 31Initial Connectivity........................................................ 31Communication Frequencies....................................... 31Synchronization ........................................................... 31User Interface.............................................................. 32Maintenance and Care ............................................................. 33Trigno Sensors................................................................... 33Trigno Base Station ........................................................... 33Specifications ........................................................................... 35Trigno Sensors................................................................... 35Trigno Recharging Base Station ........................................ 37Appendix I................................................................................. 39Mains Isolation ................................................................... 39Appendix II................................................................................ 40DC-A22 Unterminated Output Cable ................................. 40Installation.......................................................................... 40DC-A22 Conductor Assignments ....................................... 41
5Important InformationIntended UseThe TrignoTM Wireless EMG Systems are battery-powered biofeed-back devices intended for research, investigational and scholarshippurposes only. Delsys® products are not intended for measurementpurposes or for use in the treatment and diagnosis of disease. Inter-pretation of the EMG signal by a qualified professional is required. Rx ONLYContraindicationsTechnical Service and SupportFor information and assistance visit our web site at:www.delsys.comContact us at:E-mail: support@delsys.comTelephone: (617) 236 0599DO NOT USE on Patients with implanted electronic devices of any kind, including cardiac pace-makers or similar assistive devices, elec-tronic infusion pumps, and implanted stimulators.DO NOT USE on irritated skin or open wounds.DO NOT USE on Patients with allergies to Silver.
6 Trigno Wireless System User’s GuideTMWarnings and PrecautionsConsult all accompanying documents for precautionary statements and other important information.Consult accompanying user’s guide for detailed instructions.Keep the device dry. The presence of liquids may compromise the safety features of the device.Handle with care.Sensitive electronic device. Avoid static discharges. Do not operate or store near strong electrostatic, electromagnetic, magnetic or radioactive fields. Interference from external sources may decrease the signal-to-noise ratio or result in corrupted data.Connect only to Delsys-approved devices.Connecting a patient to high-frequency surgical equipment while using Delsys EMG systems may result in burns at the site of the EMG sensor contacts.Immediately discontinue device use if skin irritation or discomfort occurs.Immediately discontinue device use if a change in the device’s perfor-mance is noted. Contact Delsys technical support for assistance.Delsys Inc. guarantees the safety, reliability, and performance of the equipment only if assembly, modifications and repairs are carried out by authorized technicians; the electrical installation complies with the appropriate requirements; and the equipment is used in accordance with the instructions for use.Device contains a Lithium-Polymer battery. Do not damage, crush, burn, freeze or otherwise mishandle the device. Recharge only with the approved power supply and recharger.Trigno Systems should be stored and operated between 5 and 50 degrees Celsius due to the presence of an internal Lithium Polymer rechargeable cell. Storing or operating the device, and consequently the cell, outside of this temperature range may compromise the integrity and the safety features of the cell.
7Device InformationComplies with Requirements put forth by the Medical Device Direc-tive 93/42/EEC. Class I device, Annex VII.Type BF device (IEC 60601-1)Isolated device, (Class II, IEC 60601-1)Do not dispose this product with house waste. Contact Delsys Inc. for instructions on responsibly disposing this device. This product should not be mixed with other commercial wastes.Date of Manufacturing (appears on device)Serial Number (appears on device) FCC ID: W4P-SP-W02 (Trigno Base Station)FCC ID: W4P-SP-W05 (Trigno Sensor)FCC ID: W4P-SP-W01 (Trigno Sensor)IC: 8138A-DST01 (Model: Trigno Wireless EMG System)IC: 8138A-SPW05 (Model: SP-W05)This device complies with Part 15 of the FCC Rules and Industry Can-ada’s RSS-210 License Exempt Standards. Operation is subject to the following two conditions: (1) This device may not cause harmful inter-ference. and (2) this device must accept any interference received, including interference that may cause undesired operation.This product complies with FCC OET Bulletin 65 radiation exposure limits set forth for an uncontrolled environment.REPECEMERGO EUROPEMolenstraat 152513 BH, The HagueThe NetherlandsDELSYS INC.650 Beacon St.Boston MA 02215USAAuthorized Representative Manufacturer
8 Trigno Wireless System User’s GuideTMChanges not expressly approved by Delsys Inc.could void the User’s authority to operate the equipmentTo reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically radi-ated power (EIRP) is not more than that required for successful com-munication.This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment gen-erates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful inter-ference to radio communications. There is no guarantee that interfer-ence will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encour-aged to try to correct the interference by one or more of the following measures:• Reorient or relocate the receiving antenna.• Increase the separation between the equipment and receiver.• Connect the equipment into outlet on a separate circuit.
9DisclaimerDELSYS INC. makes no warranties, express or implied, as to thequality and performance of this product including but not limitedto, any implied warranty of applicability for other than researchuses by qualified individuals. DELSYS INC. shall not be liable toany person for any medical expenses or any direct or consequentialdamages resulting from any defect, failure or malfunction, whethera claim for such damages is based upon theory of warranty, con-tract, tort or otherwise. No representative, agent, or licensed practi-tioner is authorized to waive this disclaimer. DELSYS INC. makesno diagnosis or prescription by virtue of anything about this prod-uct.System Requirements•EMGworks 4.0.9 or later•Windows 7, Windows Vista or Windows XP with service pack3. 64-bit or 32-bit operating systems supported. Windows 7 isrecommended for optimal performance.•One USB 2.0 port•At least 2.0 GHz processor clock speed•At least 2 GB system memory•1280x1024 (SXGA) display resolution or better•1 GB hard disk storage (minimum)•Users of Windows 7 and Vista can simply ensure that they havea Windows Experience Index of 4.0 or greater.
10 Trigno Wireless System User’s GuideTMTrignoTM Wireless EMG System OverviewThe TrignoTM Wireless EMG System is a high-performing deviceunparalleled in its sophistication, its reliability and its ease-of-use.Each EMG sensor has a built-in triaxial accelerometer, aguaranteed transmission range of 40 m and a rechargeable batterylasting a minimum of 7 hours. The system is capable of streamingdata to EMGworks Acquisition and Analysis software, and ofgenerating 16 EMG and 48 accelerometer analog channels forintegration with motion capture and other 3rd party dataacquisition systems. Full triggering features further expand thepossibility for integration with additional measurementtechnologies.Wireless EMG SensorEach Trigno Sensor is equipped with the following features:•transmission range of 40m•inter-sensor latency < 500us (< 1 sample period)•self-contained rechargeable battery•EMG signal bandwidth 20- 450 Hz •EMG signal sampling rate up to 4000 samples/sec•EMG baseline noise of <750 nV RMS•CMRR > 80dB•16-bit EMG signal resolution•integrated triaxial accelerometer •software selectable accelerometer sensitivity of ± 1.5g or ±6g•LED User feedback •battery charge monitoring and status indicator•environmentally sealed device •proven parallel bar electrode technology•contoured sensor-skin interface for maximum signal stability•auto shutoffFigure 1. Trigno wireless 4-channel sensor.Inertial Sensing Axes EMG Electrodes
11Sensor LED Indicator StatusBase StationFigure 2. Trigno Base Station.Each Base Station is equipped with the following features:•recharging cradle for 16 sensors•high speed USB communication with PC•64-channel analog output connector (16 EMG, 48 ACC)•± 5V analog output range•detachable antenna•full trigger capability (Start/Stop, Input/Output)•communication & power feedback LEDs•convenient carry case designStatus LED Behavior LEDData Streaming Flashing green, 1 HzScanning Alternating green/amber flash, 1HzPairing Successful Rapid green flashing, 3x, button depressedPairing Unsuccessful Rapid red flashing, 3x, button depressedMode Switch Rapid green flashing, 3xFirmware Update Rapid green flashing, 3xBattery Charging Solid amber, in cradleCharging Complete Solid green, in cradleCharging Error LED off, sensor in cradle, cradle powered upSensor Off LED off1Wireless Sensor 5Analog Output Connectors2Base Station 6Trigger Port3USB Port 7Antenna4Power Jack/Power Supply 8EMGworks Software 1264753
12 Trigno Wireless System User’s GuideTMPower SupplyTrigno Systems are equipped with an isolated medical grade powersupply. The green power LED on the base station will illuminatewhen power is connected to the Base Station. The power supply isprovided with interchangeable country-specific plug adapters. Thepower supply can be conveniently stored in the Base Station storagespace when the system is not in use. Figure 3. Trigno SC-P05 International Medical Power Supply with plug adapter kit.Trigno System are specifically designed and approved tofunction only with the Power Supply provided. Power Supplysubstitutions constitute a violation of the medical safetyapprovals and will void the warranty.If using a mains-powered PC then an additional isolationtransformer is required for medical compliance to IEC60601-1.Refer to Appendix I for further details. No PC isolation isrequired for operation on a battery-powered laptop.
13Getting Started with the TrignoTM System Software InstallationThe Trigno EMG system is controlled by a PC through the USBport, and thus requires specialized software. Trigno Systemsinclude a Delsys Software DVD containing EMGworks SignalAcquisition and Analysis Software and the Trigno Control Utilitysoftware for use with 3rd party data acquisition systems.Install EMGworks from the Delsys Software DVD prior toconnecting the Trigno Base Station to the computer.Powering the Base StationConnect the Trigno power supply to the circular DC jack locatedon the side of the Base Station. Energize the power supply by con-necting it to a Mains outlet or to an isolation transformer. Ensurethat the PC to be used with the Base Station is connected to thesame isolation transformer. Please refer to Appendix I for clarifica-tion on using an Isolation Transformer. The power LED on theBase Station will illuminate anytime power is applied. Ensure thatthe Base Station antenna is securely attached to the antenna con-nector.Figure 4. Connecting the Trigno Base Station power supply.Connecting the Base StationIt is important to install EMGworks software prior to connectingthe Base Station to the PC. If not, the “Found New Hardware”dialog will appear and Windows will prompt for a driver location.Cancel this dialog and install EMGworks from the Delsys DVD inorder to register the Trigno drivers with the operating system.
14 Trigno Wireless System User’s GuideTMOnce the software is correctly installed, the PC will automaticallydetect the Trigno Base Station when connected to the USB port.Charging the SensorsBefore using the system, the sensors should be fully charged byplacing them in the Base Station cradle slots. Ensure the Base Sta-tion is powered and that the green power LED is illuminated.When charging, the sensor LEDs will illuminate to an amber color.Once the sensor battery is fully charged the sensor LED will turngreen. A complete charge cycle from a fully depleted sensor takesapproximately 2.5 hours.Do not force the sensors into the recharging cradles of the BaseStation. The sensors are keyed so that they can only be insertedin one orientation. Check the sensor orientation and check forobstructions in the cradle if physical resistance is met whilecradling the sensors.Recharge only with the approved power supply (SC-P05)originally included with the system. Charging with any otherpower supply may damage the device and will void thewarranty.Figure 5. Sensor LED feedback for battery charging status.Charging ChargeComplete
15Acquiring Data in EMGworks AcquisitionRefer to the “Acquiring and Plotting Data” video tutorial(provided on the DVD) for a brief introduction to configuring theEMGworks software with the Trigno system. This and additionalEMGworks tutorials can be found on our website.Refer to the EMGworks documentation (accessible in the Helpmenu of the software) for detailed instructions on setting up datacollection in EMGworks.Whenever data are collected in EMGworks, the analog outputs onthe base station are also active, so it is possible to collect data inEMGworks and in a secondary data acquisition systemsimultaneously.Sampling the Analog OutputsIf samplig the analog output signals from the Trigno System usinga 3rd party data acquisition system, refer to the “Using the AnalogOutputs” section of this guide.Digital Outputs (Trigno SDK)The Trigno SDK presents digital outputs that can be read into sev-eral common data collection platforms. Please refer to our onlinehelp for more information.
16 Trigno Wireless System User’s GuideTMUsing the Wireless EMG SensorsOrienting the EMG Sensors on the SkinTrigno EMG Sensors employ 4 silver bar contacts for detecting theEMG signal at the skin surface. It is crucial that the orientation ofthese bars be perpendicular to the muscle fibers for maximumsignal detection. The top of the sensor is shaped with an arrow toaid in the determination of this orientation. The arrow should beplaced parallel to the muscle fibers underneath the sensor. Thesensor should also be placed in the center of the muscle belly awayfrom tendons and the edge of the muscle. The sensor is easilyattached to the skin using the Delsys Adhesive Sensor Interface.Figure 6. EMG Sensors must be properly oriented with the muscle fibers. Align the sensor’s arrow with the direction of the underlying muscle fibers.Cleaning the Sensor SitePrior to affixing the EMG sensor on the surface of the skin, thesensor site must be properly cleaned to remove dry dermis and anyskin oils. Wiping the skin prior to sensor application is critical. Ifexcessive hair is present, it will also be necessary to shave the site.In cases where the skin is excessively dry, it may be useful todislodge dry skin cells by dabbing the site with medical tape. Thedry cells will attach the tape’s adhesive when it is removed. Be sureto wipe with isopropyl alcohol to remove any adhesive residue thatmay remain.Applying the Trigno Adhesive Skin InterfacesTrigno System are supplied with specially-designed adhesiveinterfaces to simplify sensor attachment. These hypo-allergenicinterfaces are manufactured from medical grade adhesive approvedfor dermatological applications. Usage of the interface promotes ahigh quality electrical connection between the sensor bars and themuscle-fiber direction
17skin, minimizing motion artifacts and the ill-effects of lineinterference. To ensure a strong bond with the skin, it is advised toremove excessive hair and wipe the skin area and the EMG Sensorwith isopropyl alcohol to remove oils and surface residues. Allowthe skin to dry completely before applying the interfaces. Adhesive Sensor Interfaces are for single use only. Immediately discontinue use if skin irritation or discomfortoccurs. All Adhesive Sensor Interfaces and Reference Electrodesare for single use only. Discard after using. Reseal storage bagto maintain freshness.Turning the Sensors ONTrigno Sensors are turned on by depressing the rubber button forapproximately one second. The green LED on the sensor willimmediately begin to flash, and begin searching for a Base Stationthat has been properly paired and is within its range. If no BaseStation is found, the LED will alternate between amber and green,indicating that it does not have an established communication link.As soon a link is established with the Base Station, the sensor LEDwill flash green approximately once per second, indicating that dataare streaming.Figure 7. Turning the Trigno Sensor “ON”.Trigno Sensor Status ConsoleA Status console for Trigno Sensors is available when operatingEMGworks and when using the Trigno Control Utility. Theconsole tracks all Trigno sensors in the system in real-time, relayingtheir on/off state, their battery charge level and theircommunication quality in the network. Additionally, this console
18 Trigno Wireless System User’s GuideTMhosts the sensor pairing function and can send an “off” commandto all sensors.A compact display of this information is accessible in EMGworksby hovering over the notification area icon for the Trignohardware. The full dialog is displayed by double-slicking this icon. Figure 8. The Trigno Sensor Status Console offers real-time sensor feedback. A) data acquisition status, B) battery charge state, C) sensor number, D) sensor power, E) wireless signal strength, F) sensor pairing, G) off command.Turning the Sensors OffThere are several mechanisms for turning the Trigno sensors off,described as follows:•Send an “off” command via software•Dock the sensor in an active charge cradle•Hold sensor button for approximately 20 seconds•5 minute time-out if sensor is not communicating with basestation
19Using the Analog OutputsThe Trigno System provides simultaneous analog signalreconstruction of data being detected by all active sensors. Thesesignals are made available on the 68-pin connectors located on theBase Station. EMG signals at these outputs are amplified by afactor of 909, with full dynamic range of ±5V. Similarlyaccelerometer signals are presented with a nominal full range of±5V. These must be calibrated according to their selectedoperational range (±1.5g, ±6g). Note that the EMG andaccelerometer signals exhibit fixed 48 and 96ms delays respectively,from the time the sensor detects the event to the time the analogsignal is reproduced.Figure 9. Analog output connectors.Analog Output ConnectorsChannels 1-16, EMG SignalsThe pinout of this connector replicates the pinout of the Bagnolidesktop EMG systems to facilitate connectivity between sharedequipment. Only EMG signals are provided on this connector.Note that this pinout is also compatible to that of NationalInstruments data acquisition modules.Channels 1-64, all SignalsThis connector makes available all 64 analog output channels inthe 68-pin connector. This connector is compatible with some 80-channel data acquisition modules from National Instruments.
20 Trigno Wireless System User’s GuideTMFigure 10. Pinouts of the analog output connectors.Screw Terminal ConnectionsMany data acquisition systems are equipped with screw-type wireterminations. In these cases Delsys can supply a cable assembly thatmates with the analog output connectors and breaks out theindividual channels onto single conductors. Please contact Delsysfor details regarding this particular wire assembly or otherconnectivity needs. Please refer to Appendix II for further detailsregarding the DC-A22 Unterminated Output Cable.Figure 11. DC-A22 Unterminated Output Cable.
21Trigno Control Utility SoftwareThe Trigno Control Utility software operates on a PCindependently from EMGworks Data Acquisition and Analysissoftware. The Trigno Control Utility is designed to configure andcontrol the Trigno System so that it becomes a full analoginstrument. In this scenario, all data acquisition is performed bysampling the analog channels with 3rd party acquisition systems,often used with Motion Capture Systems.Additionally, the Trigno Control Utility serves to provide digitalsamples if using the Trigno SDK.Installing the SoftwareThe Trigno Control Utility software is included on the DelsysSoftware DVD. Installing EMGworks will also install the TrignoControl Utility software.The Trigno Control Utility software can also be obtained bydownloading the EMGworks installer from the Delsys web site at:http://www.delsys.com/Products/EMGworks.htmlThere is no license required to use the Trigno Control Utility.The system requirements for the Trigno Control Utility software isthe same as EMGworks, detailed in the EMGworks User’s Guide:http://www.delsys.com/KnowledgeCenter/NetHelpLaunching the SoftwareWhen installed, the Trigno Control Utility software may belaunched from the Start menu under “Delsys, Inc.” To create adesktop shortcut to the Trigno Control Utility, navigate to theprogram in the Start menu, right click the icon, and select “SendTo --> Desktop (create shortcut)”.The Trigno Control Utility application must remain running onthe PC for the analog outputs to remain active. The wireless sensor configuration window is accessible from the“configure” button. “Start” and “Stop” controls activate anddeactivate the analog outputs, and define the Start and Stop outputtrigger events. All settings are locked once the “Start” button isdepressed, and can only be changed after the “Stop” button ispressed
22 Trigno Wireless System User’s GuideTMFigure 12. Trigno Control Utility software.Figure 13. Trigno Control Utility software with active outputs
23Configuration Options for Trigno SystemAccessing Configuration OptionsWhen editing a configuration in EMGworks, the hardware optionsfor the base station can be set in the Hardware node of theConfiguration Tree when the Trigno Wireless System is selected asthe primary A/D device.Figure 14. Selecting the Trigno system as the primary A/D device in the Hardware node of the Configuration Tree in EMGworks.When using the Trigno Control Utility, these options can be set byclicking the Configure button.Figure 15. Configure button in Trigno Control Utility
24 Trigno Wireless System User’s GuideTMTrigno System InformationThe Information tab presents information pertaining to the systemand its settings.Figure 16. Trigno Wireless System information. If multiple bases are connected, the settings for each base are shown on a separate, top level tab.Transmission FrequenciesWireless communication occurs on varieties offrequencies throughout the acceptable 2.4 GHzspectrum. Four frequency sets are available (“A”, “B”, “C”and “D”). The current frequency set is shown here. Firmware VersionDelsys may occasionally release firmware upgrades toimprove and evolve the functionality of Trigno Systems.The current firmware version is shown here.Serial NumberEach Trigno Base Station has a unique serial number andidentifier address which is shown here.Network SizeIndicates the number of sensors supported by this base. Launch Test PanelPlaces the Trigno Base Station in a test mode to assistwith verification of analog output signal connections.Each of the 64 analog output channels is configured to
25produce a unique sinusoid which can be verified byproperly sampling these channels with secondaryacquisition system.Refresh This button refreshes the status information. Copy Copies the data the in the Information tab to theclipboard.Trigno System SettingsThe Settings tab allows several system parameters to be modified asneeded.Figure 17. Configuring Trigno Sensor SettingsFrequency SetUse this setting to change the frequencies being used forwireless communication. The default set is “A”. Thefrequency set should only be changed if nearby sourcesare interfering with Trigno communications or theparticular operating environment is causing significantpath loss on the current frequency set. Note thatchanging the communication frequency set will requiresensor re-pairing. Frequencies within the sets are definedby the system and cannot be changed by the User.
26 Trigno Wireless System User’s GuideTMAudible WarningsThis option will generate an audible “ping” along with asmall message, whenever a sensor falls out of range or it’sbattery is excessively low.Mode Control (Analog Output Software Only)In the Analog Output application, the sensor mode is controlledon the Mode Control tab of the Configuration dialog.Information on mode control is available through our EMGworksonline help:http://www.delsys.com/Products/EMGworks.htmlTest PanelThe Test Panel is used to verify the analog signal connections withthe data acquisition module by outputting predefined and uniquesignals on each channel. The test signals are sinusoidal in natureand defined by an amplitude, a frequency and an offset. The
27expected outputs for each analog channels are listed in the TestPanel window once the option is slected.Figure 18. The Test Panel Signals.
28 Trigno Wireless System User’s GuideTMAdditional Sensor InformationSensor PairingTrigno sensors communicate with a custom wireless protocol thatlinks each sensor to a unique Base Station. This linking process isknown as sensor “pairing”, and is initiated through the “Pair”command.Trigno systems are shipped with all sensors appropriately paired.Sensor pairing is typically needed if sensors are being replacedwithin the network group, when the communication frequencysets are changed, and after a firmware upgrade is performed.1. Initiate sensor pairing in software.When using EMGworks, initiate pairing by right-clickingthe Trigno hardware icon in the system notification area,and selecting the appropriate menu item.Figure 19. Location of the Trigno hardware icon in the system notification area, and the pairing menu item.When using Trigno Control Utility, click the “Pair”button on the Sensor Status Console.Figure 20. Pair button in the Sensor Status Console.
292. Complete the pairing process by depressing the desired sensorbutton for a minimum of 3 seconds. Successful pairing willresult in 3 green LED flashes on the sensor, and a confirma-tional message in the software.Figure 21. Complete the process by depressing the sensor button for 3 sec.Sensor Factory CalibrationThe Trigno system stores calibration information for sensors whichhave been paired with it. When collecting data with EMGworks,this calibration information is used to accurately display measuredvalues, in many cases without the need for a user-initiated manualcalibration.After a pairing operation is completed, the system automaticallysearches for pre-existing factory calibration data on the particularsensor. If the sensor has never been paired with the system (forexample, in the case of a new additional sensor), the software willprompt the user to enter factory calibration data, which can beobtained from Delsys. Factory calibration data are a string ofnumbers and letters which encode the calibration values for aspecific sensor. Factory calibrations are specific to a single sensorand will not be accepted by the software for use on another sensor.At any time a nominal, “default” calibration may be selected for asensor, or the specific factory calibration may be re-entered. Thisfeature is accessed by re-pairing the sensor.Figure 22. Factory Calibration Prompt. The calibration can be either auto-detected, or entered manually if the sensor is being paired for the first time.
30 Trigno Wireless System User’s GuideTMSmart SensorsAfter pairing, the association of sensors to the base station isretained for all future uses. Any configuration in EMGworks canbe made to reflect the last paired set of sensors by clicking the“Refresh Smart Sensors” button in the “Add Sensors” pane inEMGworks. When data collection starts, the software will verifythat the sensors currently communicating match those used in theconfiguration. If there is a mismatch, cancel the recording and re-pair the sensors.Figure 23. Refresh Smart Sensors button.Sensor Modes in EMGworksEach Trigno sensor can operate in one of 4 possible data collectionmodes, which determines the type of data being collected. Whenusing EMGworks, the sensor mode can be set on the sensorsettings pane for each sensor. Note that the number of modesavailable is determined by the Trigno sensor type. Figure 24. Setting sensor modes in EMGworks.
31Using Tandem Trigno SystemsTwo Trigno systems may be used in tandem, connected to thesame computer as a synchronized 32 sensor, 128 channel system.Initial ConnectivityTo use two Trigno systems in a tandem configuration, connect theUSB cable from each base station to the same computer. If usingEMGworks, also connect the Trigger Cross-Over Cable (DC-C02)between the trigger ports on the two base stations. After connect-ing the USB cables and powering each base station, launch eitherthe Trigno Control Utility application or EMGworks. Note thatthe trigger cross-over cable will work irrespective of orientation.Figure 25. Installation of the Trigger Cross-Over cable to synchronize two base stations when used with EMGworks.Communication FrequenciesWhen the software detects the presence of two bases connected tothe computer, the frequency sets on each base are automaticallychanged to allow the simultaneous communication of 32 sensors.The user is required to re-pair each sensor to use these newcommunication frequencies. Similarly, when reverting to the use ofa single base, the communication frequency set will be restored tothe option selected by the user (Set A, B, C, or D) and the sensorsmust again be re-paired.SynchronizationAll channels of data collected in a tandem configuration are fullysynchronized between the two bases.
32 Trigno Wireless System User’s GuideTMUser InterfaceUser interface options are expanded to reflect the presence ofadditional sensors.Figure 26. The Status Console when tandem bases are used.
33Maintenance and CareTrigno SensorsTrigno sensor are encased in a sealed polycarbonate enclosure. Thefollowing points should be kept in mind when handling thesensors.•All sensors should be visually inspected before each use toensure that no mechanical deterioration has occurred.•The sensors can be cleaned and sterilized with a damp cloth andmild detergent, or with 70% isopropyl alcohol swabs. Ensurethat the sensor contacts remain clean at all times for properoperation.•While the sensors are sealed and are water-resistant, theseshould never be completely submerged in any liquid. They aredesign to be used on damp skin surfaces and in the presence ofsweat without compromise to safety, sensor integrity or opera-tion. •The sensor contacts are made of pure silver and are quite soft.Care should be taken to preserve the integrity of these contacts.Do not scrape or dent these contacts. •Handle the sensors with care: do not drop them on the groundor step on them.Do not submerge the sensors in any liquid under anycircumstance.The sensors contain sensitive electronic circuitry. Staticdischarges and intense magnetic fields should be avoided toprevent the risk of irreparable damage to the sensors.Trigno Base Station The Trigno System is designed to provide years of reliable servicewhen proper care is followed. While the Base Station enclosure ismade of durable plastic, the following points should be kept inmind during its use and handling:•The device and its accessories should be visually inspectedbefore every use to ensure that no mechanical deterioration hasoccurred.•The Base Station can be easily cleaned with a 70% solution ofisopropyl alcohol if necessary. DO NOT EXPOSE THE BASESTATION TO ANY LIQUID. IT IS NOT A SEALEDDEVICE.
34 Trigno Wireless System User’s GuideTM•The units are not shockproof and should not be dropped or besubjected to excessive forces or accelerations.The recharging Base Station is not water-resistant. Under nocircumstance should this unit be exposed to water or any othertype of liquids.
35SpecificationsTrigno Sensors(1) Range is characterized in open office environments. Interfering RF sources in the 2.4GHzspectrum, as well as absorptive objects occluding the RF communication path may degradetransmission distance. Stated range can be exceeded under favorable RF conditions.(2) Battery duration is a function of charge and discharge conditions. Optimal batteryperformance is obtained when the device is operated at room temperature. Note that thestated Operation Time reflects the expected performance of a fully charged new battery usedin a sensor that is transmitting data. Operation Time is expected to decrease as a function ofcharge cycles, and when the sensor is searching for a network.(3) 80% of original battery capacity is maintained after 300 discharge/recharge cycles or after 2years if recharge cycles are less than 300. These values represent typical expectationsunder normal conditions. Actual performance will vary depending on usage conditions. (4) Operation beyond these temperature limits may damage the rechargeable battery.GENERAL SPECIFICATIONSTypical Operating Range(1) 40 mRF Frequency Band 2400-2480 MHz (ISM band)Power Consumption <65 mWCase Dimension 27 x 37 x 15 mmFull-charge Operation Time(2) 8 hoursRecharge Time(3) <2.5 hoursMass < 15gAuto Shut-down timer 300 secondsTemperature Range(4) 5 - 50 degrees CelsiusEMG SENSOR SPECIFICATIONSRange(1) 11 mV (r.t.i.)Resolution (EMG Signal)(2) 168 nV/bitBandwidth (EMG Signal)(3) 20±5 Hz, >40 dB/dec450±50 Hz, >80 dB/decPassband Ripple(3) <2%Overall Channel Noise(4) <0.75uVCMRR(5) >80 dBSampling Rate(6) 2000 samples/sec4000 samples/secNumber of Contacts 4
36 Trigno Wireless System User’s GuideTM(1) Range is specified for the input of the EMG sensor and is samples with 16 bits(2) ADC Resolution is specified for the input of the sensor.(3) Filter is designed as a maximally flat Butterworth to preserve EMG signal amplitude andphase linearity.(4) Input-referred noise is calculated as a root mean square over a 5 second window sampled at2kHz.(5) CMRR is measured for a minimum 200 mV common mode input signal at a frequency of60Hz.(6) EMG signal sampling rates are intrinsic to the sensor and cannot be changed beyond the twostated rates, which are software selectable.(7) Sensor skin contacts are made from pure silver and should not be used if allergic reactions tosilver are expected or found to occur. (1) Accelerometer range is software selectable.(2) Resolution is calculated with 8 bits over the full 3.3V dynamic range, encompassingaccelerometer ideal maximum outputs of ±2.1g and ±8.0g. Ratings exceeding the nominalrange of ±1.5g and ±6 g may be non linear and are not guaranteed(3) Calculated over a 50 Hz bandwidth and range setting of ±1.5g.(4) Offset errors can nulled in software by using a calibration routine that references the normalgravitation force.(5) Accelerometer sampling rates are intrinsic to the sensor and cannot be changed beyond thetwo stated rates, which are software selectable.Contact Dimension 5 x 1 mm.Contact Material(7) 99.9% SilverACCELEROMETER SPECIFICATIONSNumber of Axis 3 DOFRange(1,2) ±1.5g±6g Sampling Resolution(2) 0.016 ± 0.001 g/bit (at ±1.5g)0.063 ± 0.005 g/bit (at ±6g)Accelerometer Noise(3) 0.0025g (rms)Bandwidth DC - 50±5 Hz, 20dB/decOffset Error(4) ±0.21g (XY)+0.21g / -0.42g (Z)Sampling Rate(5) 148.1 / 296.3 samples secEMG SENSOR SPECIFICATIONS
37Trigno Recharging Base Station(1) Range is characterized in normal office environments. Interfering RF sources in the 2.4GHzspectrum, as well as absorptive objects occluding the RF communication path may degradetransmission distance. Stated range can be exceeded under favorable RF conditions.(2) All data packets are guaranteed to by synchronized within the established sensor network.(1) Delay from sensor event to analog output is fixed for all channels, and referenced as a"group delay". In the case of EMG channels, this delays consists of the following elements: a)Sensor Filter (1.5 ms), b) Digitization Delay (41 ms), c) SinX/X Correction (2 ms), and d)Analog Low Pass Filtering (3.5 ms).(2) This parameter relates the detected voltage input at the sensor to the reproduced voltage atthe EMG channel output.(3) Sin(X)/X correction is applied to each channel for cancelling the distorting effects of the DACsampling process.GENERAL SPECIFICATIONSTypical Operating Range(1) 40 mRF Frequency Band 2400-2480 MHz (ISM)Power Consumption <6 W (operation)<14W (during recharge)Sensor Recharge Time < 2.5 hoursUSB type USB 2.0 compliant, high speedTemperature Range 5 - 50 degrees CelsiusMaximum number of Sensors 16Inter-sensor delay(2) 0 secondsDimensions 276 x 241 x 127 mm EMG ANALOG OUTPUT SPECIFICATIONSNumber of outputs 16 Signal group delay(1) 48 msEMG Signal Range ±5 VEffective EMG Signal Gain(2) 909 V/V ±5%Channel Offset (r.t.o.) ±100 mV (max)Baseline Noise <0.5mV RMSDAC Filter Bandwidth DC-500 Hz, 160 dB/Dec.Passband Ripple(3) <2% with Sin(X)/X correctionConnector Type SCSI-68, Type II
38 Trigno Wireless System User’s GuideTM(1) Delay from sensor event to analog output is fixed for all channels, and referenced as a"group delay". In the case of Accelerometer channels, this delays consists of the followingelements: a) Acc Filter (2 ms), b) Digitization Delay (41 ms), c) SinX/X Correction (27 ms),and d) Analog Low Pass Filtering (26 ms).(2) This parameter relates the nominal uncalibrated voltage differential for an inertialdisplacement of 1 g. (3) Sin(X)/X correction is applied to each channel for cancelling the distorting effects of the DACsampling process.ACCELEROMTER ANALOG OUTPUT SPECIFICATIONSNumber of outputs16 X Axis16 Y Axis16 Z AxisSignal group delay(1) 96 msAccelerometer Output Signal Range ±5 VNominal Accelerometer Signal Gain(2)2.424 V/g ±5% (±1.5g range)0.624 V/g ±5% (±6g range)Channel Offset ±100 mV (max)Baseline Noise 0.5mV RMSDAC Filter Bandwidth DC-50 Hz, 160 dB/DecPassband Ripple(3) <2% with Sin(X)/X correctionConnector Type SCSI-68, Type II
39Appendix IMains IsolationThe Trigno Base Station is provided with Medical Grade isolatedpower supply which is compliant with IEC60601 series ofharmonized standards for Medical Devices. However, fullcompliance with IEC60601-1 Basic Safety for Medical Devicesrequires that the PC operating the software be isolated as well. Thisstems from the basic requirement to have all patients electricallyisolated from equipment within their reach, and since the PCrunning the Trigno Software is conceivably within their reach, ittoo must be isolated.Delsys does not supply isolation transformers for PersonalComputers and their peripherals. Delsys recommends model IS1000HG manufactured by TrippLite (www.tripplite.com) for this task. This device is a medialgrade isolation transformer capable of delivering up to 1000 W.A smaller similar version for 500W is also available (IS500HG).Similar products compliant with IEC60601-1 are acceptable.
40 Trigno Wireless System User’s GuideTMAppendix IIDC-A22 Unterminated Output CableThe DC-A22 Unterminated Output Cable provides access to all64 analog output channels from the Trigno System on discretewires for data acquisition systems with screw-type terminations.The DC-A22 cable connects directly to the output connectorlabeled "1-64"on the Trigno System and terminates in 67 signalconductors with pre-stripped ends (64 analog output signals and 3GND conductors).Each conductor employs a unique color scheme to identify itssignal. The conductor jacket is the primary color, and it is markedwith a secondary color. An example of the coloring scheme isshown in Figure 27 below. Figure 27. Wire color scheme example.InstallationRefer to Figure 28 for installing the DC-A22 cable. Please observethe following points:•Connect the GND wires to the data acquisition system groundfor analog inputs. It is recommended to twist all three wirestogether and connect these to a common ground point on themeasurement system to avoide the risk of creating groundloops.•Ensure that any unused conductors are not exposed and willnot come into contact with each other or any other signal orvoltage potential. This can be done by clipping the bare endsof the conductors or using heat shrink tubing or electrical tapeto enclose the bare ends.White / Black Black / White
41DC-A22 Conductor AssignmentsFigure 28. DC-A22 Conductor AssignmentsTrigno Output Trigno Pin Conductor ColorPrimary / Secondary Trigno Output Trigno Pin Conductor Color Primary / SecondaryEMG 1 68 Violet / Orange AY 9 16 Tan / VioletAX 1 67 Blue / Orange AZ 9 17 Tan / GrayAY 1 33 Orange / Blue EMG 10 49 Blue / TanAZ 1 34 Orange / Violet AX 10 48 Green / TanEMG 2 66 Green / Orange AY 10 14 Tan / GreenAX 2 65 Yellow / Orange AZ 10 15 Tan / BlueAY 2 31 Orange / Yellow EMG 11 47 Yellow / TanAZ 2 32 Orange / Green AX 11 46 Orange / TanEMG 3 64 Gray / Pink AY 11 12 Tan / OrangeAX 3 63 Violet / Pink AZ 11 13 Tan / YellowAY 3 29 Pink / Violet EMG 12 45 Pink / TanAZ 3 30 Pink / Gray AX 12 44 Brown / TanEMG 4 62 Blue / Pink AY 12 10 Tan / BrownAX 4 61 Green / Pink AZ 12 11 Tan / PinkAY 4 27 Pink / Green EMG 13 42 Violet / WhiteAZ 4 28 Pink / Blue AX 13 41 Blue / WhiteEMG 5 60 Yellow / Pink AY 13 7 White / BlueAX 5 59 Orange / Pink AZ 13 8 White / VioletAY 5 25 Pink / Orange EMG 14 40 Green / WhiteAZ 5 26 Pink / Yellow AX 14 39 Yellow / WhiteEMG 6 58 Gray / Brown AY 14 5 White / YellowAX 6 57 Violet / Brown AZ 14 6 White / GreenAY 6 23 Brown / Violet EMG 15 38 Orange / WhiteAZ 6 24 Brown / Gray AX 15 37 Pink / WhiteEMG 7 55 Green / Brown AY 15 3 White / PinkAX 7 54 Yellow / Brown AZ 15 4 White / OrangeAY 7 20 Brown / Yellow EMG 16 36 Brown / WhiteAZ 7 21 Brown / Green AX 16 35 Tan / WhiteEMG 8 53 Orange / Brown AY 16 1 White / TanAX 8 52 Pink / Brown AZ 16 2 White / BrownAY 8 18 Brown / Pink GND 9White / GrayAZ 8 19 Brown / Orange GND 22 Brown / BlueEMG 9 51 Gray / Tan GND 43 Gray / WhiteAX 9 50 Violet / Tan NC 56 Blue / Brown
42 Trigno Wireless System User’s GuideTM

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