Phonic Ear 871T Wireless Directional Microphone Array User Manual

Phonic Ear, Inc. Wireless Directional Microphone Array

User Manual

user guide2163 Lexis User Guide (final) 1/22/03 4:20 PM Page 2
cautions/notices . . . . . . . . . . . . . . . . . . .24cleaning . . . . . . . . . . . . . . . . . . . . . . . . .24appendix a: troubleshooting . . . . . . . .25-26appendix b: warranty . . . . . . . . . . . . . . . .27disclosure policies . . . . . . . . . . . . . . . . . .28code of federal regulations . . . . . . . . . . .29LEXIS frequencies . . . . . . . . . . . . . . . . . . .30contentsintroduction . . . . . . . . . . . . . . . . . . . . . . .1package contents . . . . . . . . . . . . . . . . .2-3microphone features . . . . . . . . . . . . . .4-6receiver features . . . . . . . . . . . . . . . . . . .7about channels . . . . . . . . . . . . . . . . . . . .8connecting receiver . . . . . . . . . . . . . . . . .9professional fitting . . . . . . . . . . . . . . . . .10suggested uses for LEXIS system . . . . . .11suggested settings for receiver . . . . . . . .12suggested settings for microphone . . . .13ways to use your microphone . . . . .14-16connecting mic to other devices . . . .17-18batteries/charging . . . . . . . . . . . . . . .19-22extending microphone range . . . . . . . . .23replacing pin locks . . . . . . . . . . . . . . . . . .232163 Lexis User Guide (final) 1/22/03 4:20 PM Page 4
1introductionCongratulations on your decision to takethe next step toward better hearing!Many people with active lifestyles like yourshave chosen Lexis to improve the quality of their participation in social situations.Lexis is an addition to your behind-the-earhearing instruments. Simply attaching thesmall receiver to your hearing instrument creates the mobility and freedom to partici-pate in situations that might otherwise be uncomfortable. You’ll notice improvedspeech understanding in almost any environment — even in the presence ofnoise or reverberation, or at a distance fromthe speaker. Your Lexis solution is compatible with mostmanufacturers’ hearing instruments, soeven if you decide to change your hearinginstrument, your investment is safe in Lexis.Lexis conforms to the guidelines of the Mosaic standard. Mosaic (www.mosaic-consortium.org) helps ensure the interoperability of newwireless systems for hearing healthcare.2163 Lexis User Guide (final) 1/22/03 4:20 PM Page 5
21typical package contents• Lavalier cord• External antenna• Auxilliary input cables• Microphone/transmitter• Receivermodule(s)• Extra colorpin locks• Microphone charger• NiMH rechargeable batteries**NOTE: batteries need to be charged for ? hours before they are ready to use in the microphone/transmitter2163 Lexis User Guide (final) 1/22/03 4:20 PM Page 6
3you will also need:• Behind-the-ear hearing aid (contact manufacturer forcompatibility information)• Audio shoe:• Must be compatible with yourhearing aid•Note: Some versions of Lexisinclude the audio shoe as acomponent of the receiver2163 Lexis User Guide (final) 1/22/03 4:20 PM Page 7
42microphone features (top)On/off/mode switch •• Microphone grille• External antenna jack• Auxilliary audio input jack• Charge jackSuperfocus mode •Focus mode •Omni mode •2163 Lexis User Guide (final) 1/22/03 4:20 PM Page 8
5microphone features (bottom)• Battery chamber & stand• Channel button• Pocket clip • HI/LO level button• Battery status & channel display2163 Lexis User Guide (final) 1/22/03 4:21 PM Page 9
6microphone features (display)• Battery level indicator• Display only shows channel number when in low sensitivity mode• Display alternates betweenchannel number and HI when set to boom mic (high sensitivity)level. Use Omni mode (See 10)to use the boom mic; Focus and Superfocus modes work normally.2163 Lexis User Guide (final) 1/22/03 4:21 PM Page 10
73receiver features• Direct audio input pins• FM gain control (professional use only)• Pin orientation lock(blue pin = right ear; red pin =left ear)• Channel label• Mode switch2163 Lexis User Guide (final) 1/22/03 4:21 PM Page 11
84about channelsYour Lexis system is a radio device, and like any other radio, it communicates on specific channels. Your microphone andreceiver must be on the same channel towork together. Never operate two microphones on thesame channel — you’ll experience annoy-ing interference.If you are travelling internationally, be awarethat your channel may not be approved foruse in all countries. Contact your manufac-turer for a list of channels approved aroundthe world.PushbuttontochangechannelMicrophoneand receiverchannelsmustmatch!5changing channelsIf you want to use your microphonewith a receiver on a different channel,you can change the microphonechannel as shown here.2163 Lexis User Guide (final) 1/22/03 4:53 PM Page 12
97changing pinorientation6connecting the receiverto your hearing aidAudio shoerequired(see 1)Important!Back of Lexismust facesame directionas back of hearing aidNotelargepin 1 Pull out lock3 Push in lock2 Rotate pins to align with audioshoe holesIf pinsdon’talignwithholes2163 Lexis User Guide (final) 1/22/03 4:21 PM Page 13
8professional fittingYour hearing instrument has unique characteristics. To work properly, your Lexis receiver mustbe adjusted to match those characteristics. Only a hearing care professional is qualified to perform such adjustments. Fitting procedures are available in the Lexis Fitting Guide. Pleasevisit your hearing care professional for a complete fitting.Lexis has a unique feature in its variable FM gain control that allows your hearing care profes-sional to change the FM signal relationship to the environmental sounds. This creates the optimal signal-to-noise ratio, which improves your ability to hear in noise and over distance.Your hearing instrument has distinctive characteristics, so for it to work properly with your Lexisreceiver it must be correctly adjusted. Only a hearing care professional is qualified to performthese adjustments; please visit them for a complete fitting. These fitting procedures are available in the Lexis Fitting Guide.102163 Lexis User Guide (final) 1/22/03 4:21 PM Page 14
119suggested ways to use your Lexis systemThe possibilities are limitless, but here are some common uses:classrooms meetings partiestelevision car household2163 Lexis User Guide (final) 1/22/03 4:21 PM Page 15
10 suggested settings for your receiverThese are suggested starting points; with experience, you can quicklychange the settings to suit your preferences.If distance ornoise level is: Use:High Lexis only•Med/Low Lexis + HA•None HA only•122163 Lexis User Guide (final) 1/22/03 4:21 PM Page 16
1311 suggested settings for your microphoneThese are suggested starting points; with experience, you can quicklychange the settings to suit your preferences.If distance ornoise level is: Use:High Superfocus•Medium Focus•Low Omni•None Off•NOTE: After turning on your microphone, you may notice a small delay while the system software loadsSFF2163 Lexis User Guide (final) 1/22/03 4:21 PM Page 17
12 ways to use yourmicrophonepoint and listenAvoid covering grilleIdeal for:• Parties• Shopping• Small group discussionsPoint towardsound sourceAs you move from place to place — fromhome to school to work to restaurants andparties — you will find that your listeningenvironment changes dramatically. You canuse your versatile Lexis microphone toimprove understanding in practically any ofthese environments, just by changing itsposition. The examples shown here areonly suggestions — with practice, you’resure to discover what works best for you.142163 Lexis User Guide (final) 1/22/03 4:21 PM Page 18
15on the tableIdeal for:• Conferences• Large group discussions• Restaurantsaround a friend or teacher’s neckSuperfocus mode recommended. Ideal for:• Lectures• Sports• Parent/partnercommunicationNOTE: These user modes may require the external antenna for optimum performance.2163 Lexis User Guide (final) 1/22/03 4:21 PM Page 19
a friend or teacheruses a boom mic(optional accessory)Provides the best possible signal. Ideal for:• Lectures• Sports• Parent/partnercommunicationclipped to a friend orteacher’s pocketSuperfocus mode recommended. Ideal for:• Lectures• Sports• Parent/partnercommunicationNOTE: These user modes may require the external antenna for optimum performance. 162163 Lexis User Guide (final) 1/22/03 4:21 PM Page 20
17connecting a boom mic1 Switch to Omnimode3 Push HI/LO button with pen to set to HI level2 Plug in micconnecting to TV,stereo, & other devices2 Plug in cable1 Mic must be at LOlevel; if it has previouslybeen set to HI level forboom mic use, reset by switching to Omnimode and pushing theHI/LO buttonNOTE: You can override the boom mic signal byswitching to Focus or Superfocus modes.2163 Lexis User Guide (final) 1/22/03 4:21 PM Page 21
notes on connecting to TV,stereo, & other devices3 Plug intoTV, VCR,CD, etc.• Your microphone must be set to LOlevel to connect to TV, stereo, and other devices• If your microphone is off, it will automati-cally turn on when you plug in the auxil-liary input cable• It is recommended that you use the TVAudio Out jacks (on the back of mostTVs). If you use the Headphone jack, theTV speaker will turn off• Switch to Omni mode to mix in environ-mental sounds (focus modes are muted)• If no auxilliary signal is present for 5 minutes (e.g., if the TV isn’t on), yourmicrophone will automatically turn off• To override the 5-minute timeout, switchto Superfocus mode, then to Off182163 Lexis User Guide (final) 1/22/03 4:22 PM Page 22
1913 batteriesTypical battery life: 8 hoursThe unit willshut downwhen batteryvoltage istoo low.During shut-down theunit powerwill cycle onand off togive an audioindication oflow batteryIndicator level dropsas batterydrainsyour receiver has no batteryYour Lexis receiverdraws a smallamount of powerfrom the batteryinside your hearingaid. It does nothave a battery ofits own. Do notattempt to openthe receiver case. 2163 Lexis User Guide (final) 1/22/03 4:22 PM Page 23
completed chargingBatterybars flashwhen fullychargedTypical charge time: Never recharge alkaline batteries!2 Plug in3 Plug inBars scrollwhilechargingNever recharge alkaline batteries!charging in progress202163 Lexis User Guide (final) 1/22/03 4:22 PM Page 24
21Remove tamper-resistant screws(if present)Screw may be hidden under rubber plugreplacing microphone batteriesYour Lexis microphone uses 2 AAA batteries.These will eventually need to be replaced —after about 1 year for rechargeable batteries,and after about 8 hours of use for Alkalinebatteries. You can replace your batteries withany of the following:• Special “short-sleeve” rechargeable batteriesfrom your dealer. Only these batteries canbe recharged inside your microphone.• Standard rechargeable NiMH batteries.These will not recharge inside your micro-phone, but can be removed for charging.• Standard non-rechargeable Alkaline batteries(when you don’t have time to charge).NOTE: Always dispose of old batteries in approvedbattery recycling bins. It may be illegal to dispose inthe trash. If you are not sure of proper disposalmethod, please consult your local authority.2163 Lexis User Guide (final) 1/22/03 4:22 PM Page 25
NOTE: The positive and negative ends of AAA batteries may appear similar.Use care to orient them properly.Squeeze and lift coverremoving batteries replacing batteries++––222163 Lexis User Guide (final) 1/22/03 4:22 PM Page 26
15 replacing pin locksYou can color-code your pin locks to distinguish right and left receiver modules1 Pull out lock completely2 Push in new lock2314 extending microphonetransmission rangeFor best range, antennashould point away from mic• Internal antennarange is up to 5m/15ft• To extend range up to 30m/100ft, add anexternal antenna:NOTE: Actual range may vary depending onenvironmental conditions.2163 Lexis User Guide (final) 1/22/03 4:22 PM Page 27
2416 cautions/notices• do not use on aircraft withoutpermission of flight crew• do not operatetwo transmitterson the samechannel (causesinterference)• do not immerseLexis units in wateror other liquids• some electronicdevices (microwaveovens, for example)can interfere withyour Lexis signal• avoid clothing orhand noise on microphone• supervise smallchildren to avoidswallowing orchoking on parts17 cleaning• Clean gently with asoft, damp cloth• Do not use solvents• Do not immerse2163 Lexis User Guide (final) 1/22/03 4:22 PM Page 28
25appendix a: troubleshooting • Check that receiver and microphone channelsmatch • Recharge or replace batteriesweak or distorted sound• Check for improperly fitting or clogged earmolds, or excess ear wax• Recharge or replace batteries• Adjust FM gain control (consult your hearingcare professional)static, intermittent sound, or feedback• Move away from sources of interference(metal structures, computers, etc.)• Make sure that no other microphone is broad-casting on the same channel• Clean and check battery contacts• Check for improperly fitting or clogged earmolds, or excess ear wax• Turn down FM gain control (consult yourhearing care professional)no sound at all• Check the hearing aid in isolation to make sureit is not malfunctioning• Check that receiver mode switch is in correctposition• Check that microphone mode switch is in correct position• Check that receiver and microphone channels match • Recharge or replace batteries• Adjust FM gain controlno FM reception• Confirm that the DAI shoe is properly seated,undamaged, and set properly• Check that mode switch is in correct position• Check that the microphone is on2163 Lexis User Guide (final) 1/22/03 4:22 PM Page 29
microphone batteries won’t charge• LCD battery icon will flash if there is a problemwith charging• Check that batteries are special “short sleeve”batteries — all other batteries can not be charged• Check that charger is plugged into workingwall socket• Clean charge jackLCD error codes• E2– LCD communication error – contact yourservice center for help• E1– RF fault – contact your service center for helpOmni mode does not work• Check the LCD panel – if the panel is flashing“HI”, then your microphone is set to HI (orboom mic) level. Switch to Omni mode, andpush the HI/LO biutton to reset the mic to LOmode. See 10very noisy sound when plugged into TV, stereo• If you experience a noisy signal when connect-ing the microphone to TV, stereo, etc., checkthe LCD panel – if the panel is flashing “HI”,then your microphone is set o HI (or boommic) level. Switch to Omni mode, and pushthe HI/LO button to reset the mic to LOmode. See 10262163 Lexis User Guide (final) 1/22/03 4:22 PM Page 30
appendix b: manufacturer’s warrantyThe manufacturer issues a one-year limited warranty to theoriginal consumer of this product.This warranty will go into effect upon the date of originalpurchase of this equipment, and will remain in effect forone calendar year from that date.what is covered by this warrantyAny electronic component which, because of workmanship,manufacturing, or design defects, fails to function properlyunder normal use during the life of this warranty will bereplaced or repaired at no charge for parts or labor whenreturned to the point of purchase. Transportation in is paid bythe customer. If it is determined that repair is not feasible, theentire unit may be replaced with an equivalent unit uponmutual agreement of the manufacturer and customer.what is not covered by this warrantyThis one-year limited warranty does not apply to:• Malfunctions resulting from abuse, neglect, or accident• Peripheral accessories as itemized within the productbrochure, when such items are returned after 90 daysfrom the original purchase• Batteries• Instruments connected, installed, used, or adjusted in a manner contrary to the instructions provided by themanufacturer• Consequential damages and damages resulting fromdelay or loss of this instrument. The exclusive remedyunder this warranty is strictly limited to repair or replace-ment as herein provided.• Products damaged in transit unless investigated by theshipper and returned to the warrantor with the investiga-tion report.The manufacturer reserves the right to make changes inthe design or construction of any of its instruments at anytime without incurring any obligation to make any changeswhatsoever on units previously purchased. This warranty isin lieu of all other expressed warranties by the manufacturer.No representative or person is authorized to represent orassume for the manufacturer any liability in connectionwith the sale or use of this product other than as set forth above.If your Lexis system requires service under the terms of thiswarranty, carefully package the instrument to prevent dam-age in transit and return it to the point of purchase. Include adetailed description of the problem, your full name, billingand shipping address, and telephone number.272163 Lexis User Guide (final) 1/22/03 4:22 PM Page 31
28The above warranty does not affect any legal rights that youmight have under applicable national legislation governingsale of consumer goods. Your point of purchase may haveissued a warranty that goes beyond the clauses of this limited warranty. Please consult your point of purchase for further informationThis transmitter is authorized by rule under the Low PowerRadio Service (47 C.F.R. Part 95) and must not cause harmfulinterference to TV reception or United States Navy SPASURinstallations. You do not need an FCC license to operate thistransmitter. This transmitter may only be used to provide: audi-tory assistance to persons with disabilities, persons who requirelanguage translation, or persons in educational settings: healthcare services to the ill; law enforcement tracking services underagreement with a law enforcement agency; or automated mar-itime telecommunications system (AMTS) network controlcommunications. Two-way voice communications and all othertypes of uses not mentioned above are expressly prohibited.Labeling requirementsThis device may not interfere with TV reception or federal gov-ernment radar, and must accept any interference received,including interference that may cause undesired operation.IMPORTANT NOTE: To comply with FCC RF exposurecompliance requirements, only use supplied antenna that issold with this transmitter. Use of any other antenna whichhas not been approved by the manufacturer will violateFCC rules and regulation and void the user's authority tooperate this device. This device and its antenna(s) mustnot be co-located or operating in conjunction with anyother antenna or transmitter.disclosure policieswarranty (cont’d)2163 Lexis User Guide (final) 2/10/03 2:22 PM Page 32
29C.F.R. 21 Part 801.420LEXISFM receivers and FM transmitters, when required, areapproved by the Federal Communications Commission in theU.S. and Industry Canada. Other government approvals available upon request. (Other international regulations mayalso apply.)Operation is subject to the following two conditions: (1) thisdevice may not cause harmful interference, and (2) thisdevice must accept any interference received, including interference that may cause undesired operation.Any changes or modifications made to any government-approved element of this instrument, without the expressedapproval of the manufacturer in writing, could void the user’sauthority to operate those elements of the system.If any changes or modifications are made it will be theresponsibility of the party performing the changes or modifi-cations to ensure continued compliance with the FCC regula-tions and they are required to: (1) File for a new equipmentauthorization, or (2) Relabel the product(s) with “This prod-uct has been modified by [insert the name, address andtelephone number of the party performing the modification].”Part 95This transmitter is authorized by rule under the LowPower Radio Service (47 C.F.R. Part 95) and must notcause harmful interference to TV reception or UnitedStates Navy SPASUR installations. You do not need anFCC license to operate this transmitter. This transmittermay only be used to provide: auditory assistance to per-sons with disabilities, persons who require languagetranslation, or persons in educational settings; healthcare services to the ill; law enforcement tracking servicesunder agreement with a law enforcement agency; orautomated maritime telecommunications system(AMTS) network control communications. Two-way voicecommunications and all other types of uses not men-tioned above are expressly prohibited.This device may not interfere with TV reception or feder-al government radar, and must accept any interferencereceived, including interference that may cause unde-sired operation.Operation is subject to the following two conditions: (1) thisdevice may not cause interference, and (2) this device mustaccept any interference, including interference that may causeundesired operation of the device.code of federal regulations (United States only)2163 Lexis User Guide (final) 1/22/03 4:22 PM Page 33
30Lexis frequencies (MHz)Austria 174.12174.415174.60Belgium 181.90187.50194.50Finland 173.99Germany 173.99174.075174.275174.425174.60175.00175.70176.00180.45187.45194.45207.85208.00208.10Greece 173.40173.99Ireland From 173.7To 175.1Italy 173.99174.12174.415174.77175.70176.00181.21Luxembourg 173.40Netherlands 207.85208.00208.10Norway 173.8125173.9625Portugal 174.12174.41Spain 173.99174.12174.415174.77175.70176.00181.21Sweden 175.70187.45194.45207.85UK 173.40174.12174.415174.60174.772163 Lexis User Guide (final) 1/22/03 4:22 PM Page 34
Date of purchase:My hearing care professional:My serial number:My channel number:© 2002 Phonic Ear Inc. ???-????-101/Rev. A/2163 0203 2163 Lexis User Guide (final) 1/22/03 4:20 PM Page 1

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