Listen Technologies MSF0001 Assistive Listenting System for Hard of Hearing User Manual Microfield Manual 2

Listen Technologies Corporation Assistive Listenting System for Hard of Hearing Microfield Manual 2

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MSF0001 User Manual

Users Manual Revised

MicroFieldUser Manual

ContentsIntroduction ........................................................................................................................................ 1 MicroField Key Features............................................................................................................... 3 Important Notes About Your MicroField.................................................................................... 4 MicroField Channels............................................................................................................... 6 Instructions For First-Time Users.......................................................................................... 7 General Functions......................................................................................................................... 8 Turning the Unit On and Off................................................................................................. 9 Operational Overview - Connections and Controls...........................................................10 MicroField’s Display ............................................................................................................. 11 Adjusting Volume.................................................................................................................12 Enabling the Automatic Shut-Off Function......................................................................13 Returning to Factory Defaults ............................................................................................14 Charging the Batteries.........................................................................................................15 Using the Power Supply.......................................................................................................16 Replacing the Batteries........................................................................................................17

Applications: 1. Using MicroField for Rebroadcasting..................................................................................19 Setting Up The Transmit Channel.......................................................................................19 Important Notes ...............................................................................................................20 Transmitting to a Phonak MicroLink or MicroEar Receiver..........................................22 Transmitting to other 216MHz FM Receivers................................................................23 Setting up MicroField For Use With an External 72MHz Transmitter and Receiver..24 Setting up the Receive Channel..........................................................................................26 Important Notes ...............................................................................................................27 Finding a Receive Channel Using Automatic Search.....................................................28 Finding a Receive Channel Using Manual Search..........................................................29 Storing a Preset Channel .................................................................................................30 Selecting a Preset Channel For Use ................................................................................31 Locking Preset Channels ..................................................................................................32 Using the Infrared (IR) Receiving Cable .........................................................................33 2. MicroField as a Receiver ......................................................................................................34 Important Notes.................................................................................................................35 Using the Headset Jack .....................................................................................................36 Using the Optional Speaker ..............................................................................................37

3. MicroField as a Transmitter .................................................................................................38 Using the Auxiliary Input With a Microphone..................................................................39 Using the Auxiliary Input With Your TV or Other Device.................................................40Troubleshooting ................................................................................................................................ 41Compliance Notice............................................................................................................................47Appendix ...........................................................................................................................................50

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1Introduction

2Welcome to the Phonak World of Wireless Communication!Thank you for choosing MicroField! MicroField is a high-quality product from Phonak, a worldleader in hearing technology innovation and reliability. MicroField automatically finds audiotransmissions (such as from a teacher’s wireless transmitter, a theater sound system, or otherfacilities providing wireless assistive listening) on any of three frequency bands. Once MicroFieldfinds the transmission, it sends the audio signal to you in one of several ways:Directly to your hearing aid (when equipped with a Phonak MicroLink or other type216MHz receiver)To your personal transmitter and FM receiverTo an earphone or neckloopTo an optional speakerMicroField has been designed to give you the easiest possible way to receive wireless audio trans-missions for personal use and in public facilities.Introduction

3MicroField Key FeaturesReceives audio on three frequency bands72-76MHz216-217MHzMultiple Infrared (IR) ChannelsCan be used at literally thousands of facilities!Classrooms, theaters, cinema, places of worship, courtrooms, etc.Automatic and manual search modesQuickly recognizes/locates an FM / IR signal in a facilitySeven presets for regularly used transmission channelsIdeal for classroom use, places of worship or your favorite theaterAutomatically remembers the last volume setting for each preset plus the last searchedchannel50+ hours of battery life between chargesEasy-to-use LCD display shows battery condition, channel number, preset number, volumesetting and signal strengthDigital design for stable, crystal clear receptionCan be used indoors or outdoors

4Important Notes About Your MicroFieldMicroField is a highly versatile product. It can receive various types of audio signals anduses a variety of methods to convert the signals to a form you can use. The unit can re-transmit the signals directly to an FM or external receiver; it can send audio to a headset oran optional loudspeaker; or it can send audio signals via auxiliary connections to an exter-nal transmitter that transmits to an FM receiver.This manual frequently refers to “receive” and “transmit” channels. Please note that “re-ceive” channels are frequencies received by MicroField from a portable, stationary or infra-red transmitter in a room. A “transmit” channel is a channel MicroField uses to transmit toyour MicroLink, MicroEar or other FM receiver.Receive Channel Transmit ChannelWireless transmissions on 216 MHz, 72 MHz or InfraredMicroLink, MicroEar or other personal receiverSource: portable transmitter, stationary transmitter, infrared emitter (equipment in room)MicroField

5When shipped, your MicroField is set to send audio to the headset jack. If you are planningto use it with a MicroEar, MicroLink or other FM receiver, it must be set up for the way youwill be using it. See page 20 for more information.Make certain that the batteries are charged overnight before using MicroField. See page 15.After extensive use of your MicroField, you might want to restore the factory default set-tings to give you a fresh start on programming the unit. See page 14.If you are planning to use MicroField in a theater or other location using infrared assistivelistening, the supplied IR receiving cable must be connected to the unit. See page 33.Important Notes About Your MicroField Cont.

6There are many places you can use your MicroField. These placesinclude places of worship, schools, cinemas, live theatres, stadi-ums, courtrooms and government meeting rooms. Many publicfacilities provide transmitters that use specific channels to sendthe audio from their sound systems to personal receivers orportable listening devices. Your MicroField is designed to searchout these audio channels and then send them directly to your FMreceiver.Your MicroField can pick up signals in three frequency bands:72-76 MHz, 216-217 MHz, and infrared. For all of the possiblereceiving channels, see the channel selection guide (Appendix B).MicroField can also receive infrared signals. Infrared is availablein many cinemas, live theatres and courtrooms. See page 33 formore information.MicroField ChannelsImportant Notes About Your MicroField Cont.

7Instructions For First-Time UsersUnpack your new Phonak MicroField and make sure all components were included in theshipment:1. MicroField module (with 4 AA NiMHrechargable batteries pre-installed)2. Nylon case3. Infrared receiving cable4. Power supply for re-charging and/or poweringthe unit5. Headset (not shown)If any components are missing, contact Phonak immediately. If any items were damaged inshipping, retain the packing materials for inspection and contact the shipper. Phonak is notresponsible for damage incurred in shipment.1243

8General Functions

10General FunctionsOperational Overview - Connections and ControlsConnect a headset,neckloop, an optionalspeaker, or a cable to your72MHz transmitter hereUse for controlling volume andselecting channelsDisplay indicateschannel, batterystatus, program mode,and preset lockUse to select andstore presets or toprogram the unitConnect the providedpower supply here tocharge the batteries oroperate the unitUse to automatically ormanually search for achannelAuxiliary devices connect here, suchas an environmental microphone ora cable to your TV setAn infraredreceiving cable(supplied)connects herePress and hold untildisplay turns on (or off)

11MicroField’s DisplayIndicates signal strength ofreceived audio channelWhen illuminated, indicatesunit is in search modeThe battery symbolindicates approximatebattery life remaining;when flashing, shutdownis imminentWhen illuminated, indicatesunit is in transmit channelprogramming modeWhen illuminated,indicates unit is inauto shut-off modeWhen illuminated,indicates presets arelocked and new onescannot be storedIndicates either the presetnumber, channel number, orrelative volume settingFULL MID LOWGeneral Functions

12If CH appears in your MicroField’s display, your unit isin the search mode. Wait about 7 seconds until CHgoes away, then you can adjust volume.Adjusting VolumeTo increase or decrease the volume, press the UP or DOWN keys.MicroField’s display will show a number between 0and 25 indicating the relative volume level. The unitwill also remember volume settings for each preset.Once you adjust volume to the desired level, thevolume level will automatically return the next timeyou select that preset.When using the manual search function, the UP andDOWN keys momentarily become channel selectionkeys. To change back to volume controls, wait 7seconds - the CH indicator will go out and you canagain adjust volume.General Functions

13Enabling the Automatic Shut-Off FunctionYour MicroField can be set up so that after 30 minutes of no receive signal, it will turn itself off.To activate this feature, quickly* press and hold the On/Off button and then the UP button. TheI/O symbol will be displayed.To turn off the automatic shut-off function, quickly* press and hold the On/Off button and thenpress the DOWN button. The I/O symbol will be extinguished.Note: Any time you plug a device into the AUX IN jack, the auto shut-off function is disabled.The I/O symbol illumi-nates when the autoshut-off feature isactivated.*If you hold the On/Off button down too long, the unit will shut off. Turn it back on and try again.General Functions

15General FunctionsTo charge your MicroField’s batteries, connect the power supply to MicroField and then plug it into awall outlet. You will notice that the battery symbol flashes while it is charging. It will take 13 hoursto fully charge the batteries. When the batteries are fully charged, the unit will stop charging.When not in use, it is best to leave your MicroField connected to the power supply to keep thebatteries fully charged (the unit loses charge over time even when off). Leaving the unit connectedto power will not damage the batteries.You may use your MicroField unit while it is connected to the power supply.Charging the BatteriesThe battery symbolflashes while charging.

16Using the Power SupplyYour MicroField unit may be operated with batteries or connected to the power supply. To useyour unit with the power supply, simply connect the supply to the front of the MicroField unit andconnect to AC power. Use ONLY the power supply provided with your MicroField unit.General Functions

17General FunctionsYou should change the batteries in your MicroField if the unit does not give you a sufficientamount of time for your needs after being fully charged. MicroField uses four (4) AA NiMH re-chargeable batteries. Only replace the batteries with the same type (NiMH) and a capacity of1600mA or greater. Use good quality batteries.To replace the batteries:Turn the unit off.Turn the unit upside down.Use a Phillips screwdriver to remove the fourscrews on the bottom of the unit.Turn the unit right side up.Carefully remove the lid.Remove the old batteries.Replacing the BatteriesThe batteries are accessed by removing four screwson the bottom of your MicroField(continued on next page)

18Replace with new NiMH batteries,observing correct polarity.Carefully replace the lid. Make sure it isaligned correctly.Turn the unit upside down.Replace the four screws.Charge the batteries for 13 hours beforefirst use.You can expect a new set of NiMH batteries to last between 1 and 3 years before requiringreplacement, depending on the usage.WARNING: do not use alkaline batteriesin your MicroField. Charging alkalinebatteries may result in physical harm,destruction of property and/or fire.Phonak is not responsible for any damagecaused by improper battery use.General FunctionsBattery Replacement Continued

19Using MicroField for RebroadcastingSetting Up The Transmit Channel

21Using MicroField for Rebroadcasting - Setting the Transmit ChannelYour MicroField’s transmission range is normally about 5 - 10 feet (1.5 - 3 meters). If acable is plugged into the AUX connector, the transmission range is increased to 30 - 40 feet(9 - 12 meters).When using MicroField for rebroadcasting, set its volume control at about 15 to ensure thebest audio levels. To change volume, use the controls on your hearing aid or receiver.If you use your MicroField near a computer, the computer may cause interference whichwill result in a noisy audio signal or no signal at all.Note that the channel sequence is different when setting up the transmit channel than it iswith searching for receive channels. Your MicroField will cycle through the Phonak fre-quencies (see Appendix B), then through the remaining frequencies.Other Information

22Using MicroField for Rebroadcasting - Setting the Transmit ChannelIMPORTANT: Before starting this procedure, verify that your Phonak transmitter is turned OFF andMicroField is not near a computer or other device that generates RF energy. Your MicroField mustbe running on batteries rather than the power supply.Transmitting to a Phonak MicroLink or MicroEar ReceiverDetermine the channel of your MicroLink or MicroEar(for example, 9).Press PRESET and SEARCH at the same time on yourMicroField. PGM will appear on the display, indicatingthe unit is ready to be programmed with a transmittingchannel. The display will show the current transmit chan-nel. If no channel is programmed, 00 will be displayed.Press UP until your MicroLink’s channel number appearsin the display.Press PRESET. The channel will flash; the setting isstored for immediate use. You will hear a clickingsound during this process.

23Using MicroField for Rebroadcasting - Setting the Transmit ChannelIf using a personal transmitter, turn it off; your MicroField must be running on batteries ratherthan the power supply.Transmitting to other 216MHz FM ReceiversFind your product in the channel selection tables inAppendix B, and determine the MicroField channelnumber that corresponds with your product. Forexample, Phonic Ear #51 = MicroField Channel #29.Press the PRESET and SEARCH buttons at the sametime on your MicroField. PGM will appear on thedisplay, indicating it is ready to program a channelfor transmitting. The display will show the currenttransmit channel. If no channel is programmed, 00will be displayed.Press UP until the desired MicroField channel number appears in the display.Press PRESET; the channel will flash and the setting is stored for immediate use. MicroFieldwill now transmit on that 216MHz channel (example: it now broadcasts on channel 29).

24Using MicroField for Rebroadcasting - Setting the Transmit ChannelIf you are currently using a 72 MHz transmitter to broadcast signals to your FM receiver, you canset up MicroField to work with your existing transmitter.Your external 72 MHz transmitter broadcasts on a specific frequency,which is then picked up by your FM receiver. In order for your trans-mitter to send the signal from MicroField to the FM receiver, you willneed to connect it to your MicroField using an auxiliary cable fromPhonak. You also must program MicroField so that it will work withyour transmitter.Setting up MicroField For Use With an External 72MHz Transmitter and ReceiverFind your product in the channel selection tables starting onpage A-2, and determine the MicroField channel numberthat corresponds with your product. For example, Listenchannel 17 is MicroField channel 7P.Turn on your 72 MHz transmitter and make sure it is set tothe correct channel.(continued on next page)

25Connect your transmitter to MicroField using the optional transmitter cable* from Phonak.Plug in the cable between the headphone jack of your MicroField and the AUX (or mic)input on your transmitter.Press the Search and Preset buttons together. ThePGM symbol on the display will appear.If no transmitting channel is selected, 00 will ap-pear in the channel indicator; if your MicroFieldwas previously programmed, the transmitting chan-nel number will be displayed.Press the DOWN button to select the channel num-ber of your transmitter.Press PRESET. The channel will flash and the settingis stored for immediate use.Using MicroField for Rebroadcasting - Setting the Transmit ChannelSetting up MicroField For Use With an External 72MHz Transmitter and Receiver cont.*The optional cable should be purchased through Phonak.

26Using MicroField For RebroadcastingSetting up the Receive Channel

27Important NotesMicroField will receive audio signals from a minimum of 5 feet (1.5 meters) from the transmittingantenna to a maximum of approximately 1000 feet (305 meters), depending on the type of trans-mitter used.When searching for audio signals, make sure your MicroField unit is not near a computer. Com-puters cause interference which may prevent your unit from finding a signal. When searching,MicroField will step through all available channels in the sequence shown in the “MicroField”column of Appendix B.Refer to the following pages for specific Receive Channel set-up information:Finding a Receive Channel Using Automatic Search - page 28Finding a Receive Channel Using Manual Search - page 29Storing, Using and Locking Presets - page 30Using the Infrared Cable - page 33

28Using MicroField for Rebroadcasting - Setting the Receive ChannelTo find an audio signal automatically, press the SEARCHbutton momentarily. MicroField will search all availablefrequencies for valid audio signals. “SE” will flash in thedisplay, indicating the unit is searching for a valid receivechannel, and the CH indicator will illuminate. When it findsan audio signal*, it will stop on that channel and display thechannel number. Press the SEARCH button again within 5seconds if this is not the receive channel you want (if youwait longer than 5 seconds, the unit will start over when youpress SEARCH). If no receive signals are present, the unitwill continue to search - press UP or DOWN to stop. CH isdisplayed when your MicroField is in the search mode. If youare not successful in finding an audio signal, the facility maybe using infrared. See page 33 for more information.Finding a Receive Channel Using Automatic SearchWhen CH is illuminated, yourMicroField is in Search mode.When SE is flashing, this indicates the unit issearching for a channel.*MicroField will not receive channels at or near its programmed transmit channel (see page 22). For example, if MicroField isprogrammed to transmit on channel 52, it will not be able to receive on channel 52 or nearby channels. See the InterferenceChart in Appendix A for more information.

29Using MicroField for Rebroadcasting - Setting the Receive ChannelWhen CH is illuminated, your MicroFieldis in Search mode. The CH indication willgo out after 7 seconds of non-use. Pressand hold SEARCH to re-enter the manualsearch mode.Finding a Receive Channel Using Manual SearchTo find an audio signal* manually, press and HOLD the Searchbutton until the CH symbol is shown on the display. Then,press the UP/DOWN keys repeatedly until you find the desiredchannel. Keep in mind that the first channel you find may nothave the clearest signal; you should tune to the exact channelnumber of the desired audio signal by using the UP andDOWN buttons. (See Appendix B for MicroField channel num-bers.) After you have selected your channel, do not press anybuttons for 7 seconds; the UP/DOWN keys will revert to vol-ume controls and the CH symbol will be extinguished.If you are not successful in finding an audio signal, the facil-ity may be using infrared. See page 33 for more information. Use the UP/DOWN keys to manuallysearch for the clearest channel.*MicroField will not receive channels at or near its programmed transmit channel (see page 22). For example, if MicroField isprogrammed to transmit on channel 52, it will not be able to receive on channel 52 or nearby channels. See the Interference Chartin Appendix A for more information.

30Storing a Preset ChannelIf the padlock symbol isdisplayed, the presets arelocked and you cannotstore new presets. Youshould consider lockingthe presets after storingthem. See page 32 formore information.MicroField allows you to store frequently-used channels into presets (P1 through P7). This givesyou the ability to quickly find the channel you use frequently. To store a preset:Find the receive channel you want to store using the automatic ormanual search function. For example, if you want to store channel 18,use search until channel 18 is displayed.Press and hold the Preset button. The display will flash between P1and the stored channel; the factory default channel is 00.Momentarily press the Preset button to select the preset number youwant to program. As you step through the presets, the display willalternately flash with the preset number and the programmed chan-nel.Press and HOLD the Preset button until the display flashes momen-tarily. This will program your desired channel (example: channel 18)into the currently selected preset number.To keep users from inadvertently selecting a preset*, program 00 intothe preset location by manually searching for channel 00.*When 00 is programmed into a preset location, that preset is not available.Using MicroField for Rebroadcasting - Setting the Receive Channel

31To select a preset, press and release the PRESET buttonrepeatedly until the desired preset number appears in thedisplay. There are a total of 7 preset locations available, P1through P7. In addition to the 7 preset channels, the “lastsearched” channel is also displayed. For example: the firstthree presets are programmed and the last searched channelwas channel 52. Repeated pressing of the preset buttonwill result in the following selections: P1, P2, P3, 52, P1, P2,P3, 52.If no presets are available, you may program them. See “Stor-ing Presets” on the previous page.Caution: if you hold the preset button down for more thantwo seconds, you will enter the preset programming mode.You may lock the presets after they have been stored to pre-vent this - see page 32.P1 P2 52P3Selecting a Preset Channel For UseNote: If channel 00 isstored in a preset location,that location will not bedisplayed when you stepthrough the presets.Using MicroField for Rebroadcasting - Setting the Receive Channel

32Operating Your MicroFieldLocking presets will prevent accidental erasure or changing of stored receive channels in thepresets. Press Preset and then the UP button to lock the presets. A padlock will appear in thedisplay indicating the presets are locked.To unlock the presets, press the Preset button and then the DOWN button. The padlock will disap-pear and you will be able to store new channels in the presets. When presets are locked, youcannot store any new presets. However, you can still find out what is in a preset location bypressing and holding the Preset button until the display flashes. This will cause MicroField to cyclebetween the preset number and the channel that is stored in the preset. Press Preset momentarilywhile the display is flashing to view what channels are stored in other presets.Locking Preset ChannelsPress PRESET, then UP to lock preset channelsPress PRESET, then DOWN to unlock preset channelsPadlock symbol indicates the presets are locked and newpresets cannot be storedUsing MicroField for Rebroadcasting - Setting the Receive Channel

33Using the Infrared (IR) Receiving CableMany cinemas, live theaters, courtrooms or similar places transmit audio signals to portable receiversvia infrared emitters. To receive these signals, you will need to use the infrared receiving cable withyour MicroField. Be sure to position the IR sensor so that Microfield can pick up the signal. If youare not certain where the IR emitter is located, try different positions untilyou get the strongest signal.Plug the cable into the jack marked IR.Attach the IR cable to your clothing,MicroField’s nylon case, or other location.Make sure the sensor is pointed toward the IR source (typi-cally near the ceiling).Use MicroField’s search function to find the IR signal (seepages 28 and 29 for information on automatic and manualsearch functions).Using MicroField for Rebroadcasting - Setting the Receive Channel

34MicroField as a Receiver

35MicroField as a ReceiverImportant NotesMicroField will receive audio signals from a minimum of 5 feet (1.5 meters) from the transmittingantenna to a maximum of approximately 1000 feet (305 meters), depending on the type of trans-mitter used.When using your MicroField, make sure the unit is not near a computer. Computers cause inter-ference which may disrupt your reception.Using the Headset Jack - page 36Using the Optional Speaker - page 37

36Using the Headset JackMicroField can be connected to a headset, earphone or neckloop. Securely plug the device intothe headset jack. Stereo or mono mini (3.5 mm) plugs can be used. Adjust the volume to a com-fortable listening level using the UP / DOWN buttons.Headset, Earphone, or Neckloop UseConnect your headset, earphone orneckloop to the headset jack whenusing MicroField as a receiver.MicroField as a Receiver

37Using the Optional SpeakerPhonak offers an optional speaker for your MicroField unit which fits in the carrying case. Thisallows you to use your MicroField for personal soundfield applications. Plug the speaker cable intoMicroField’s headset jack. Position the speaker in the case so the speaker grid is facing outside.After locating your receive audio signal (see pages 28-29), adjust volume to a comfortable levelusing the UP / DOWN buttons.MicroField as a Receiver

38Operating Your MicroFieldMicroField as a Transmitter

39Using the Auxiliary Input With a MicrophoneTo use the optional microphone, securely plug it into theAUX IN jack. You should only use a microphone suppliedby Phonak for this purpose.When you plug a device into the AUX IN jack, two addi-tional functions are triggered in MicroField:The transmission range of the internal transmitter isincreased.The auto shut-off function (if enabled) is disabled.MicroField as a Transmitter

40Replacing the Batteries Cont.Using the Auxiliary Input With Your TV or Other DeviceMicroField can be directly connected to your TV set, DVD, CDplayer, computer or other similar devices. This allows you tolisten to this device through your FM receiver via MicroField.Connect the optional cable* to the AUX IN jack on yourMicroField. Connect the other end to your TV or other device.When you plug a device into the AUX IN, two additionalfunctions are triggered in MicroField:The transmission range of the internal transmitteris increased.The auto shut-off function (if enabled) is disabled.*The optional cable should be purchased through Phonak.MicroField as a Transmitter

41Troubleshooting

422Troubleshooting and FAQ1When using MicroField for rebroadcasting, my MicroLink / MicroEar sounds distorted.Your MicroField’s volume is too high. Set your MicroField’s volume control at 15, then usethe hearing aid to adjust volume.When I press the Preset button, the display reads 00 and I can’t find any presets.This is normal. The unit has been set to factory defaults. No channel or preset has beenprogrammed. You can find a channel using the Search functions - see pages 28 - 29; oryou can program presets - see page 30.When I repeatedly press the Preset button, not all 7 presets are shown.This is normal. Only programmed presets (presets with channels other than 00) are shown.How do I find out what is stored in a preset channel?Press and hold the Preset button until it flashes. The display will alternately show thepreset number and the channel stored in that preset. Repeatedly press the preset button tofind your desired preset.Troubleshooting

43When I try to store a preset, the display flashes, but I cannot store the preset.The presets are probably locked (look for the padlock symbol in the display). To unlock thepresets, see page 32.The receive channel is shown in the Channel Selection Guide, but I cannot tune to thischannel.MicroField will not receive channels at or near its programmed transmit channel (see Ap-pendix A for details). For example, if your MicroField is programmed to transmit on channel52, it will not be able to receive on channel 52 or nearby channels. These channels arepurposefully locked out by MicroField when you program the transmit channel.Pressing Search causes the unit to search, but it never finds a channel.There are no FM channels available. Try plugging in the IR receiving cable; the facility maybe using infrared transmission. If you still don’t find any channels, ask someone at thefacility whether they have a transmission available.Troubleshooting

44At a movie theater, we could not pick up the transmission.Make sure the IR cable is plugged in all the way. Point the sensor around the room untilyou get the signal. Sometimes the signal is behind you.Tip: before entering the theater, set your MicroField to channel 91. Most theaters usechannel 91 or 92 for infrared transmissions.The audio signal is distorted.When searching for a channel, your MicroField may not stop at the clearest channel. Pressthe Search button again within 5 seconds to find a clearer receive channel.The channel indicator and signal strength dots go on and off.You are getting a weak signal from the transmitter. Try moving to a different location toreceive a stronger signal.Troubleshooting

45The batteries are not charging.Make sure you are using the correct power supply and that it is connected to a workingpower outlet.My batteries don’t last very long.It is time to replace the batteries. See page 17.My MicroField keeps turning off by itself.The auto shut-off function may be enabled (the I/O symbol will be illuminated); see page13. Or the batteries may be dead; try charging the batteries.The unit is not turning off automatically.Make sure the auto shut-off feature is enabled (the I/O symbol will be illuminated when itis enabled). If the auxiliary cable is plugged into the AUX IN jack, the auto shut-off fea-ture is disabled.Troubleshooting

46I need more transmission range on my MicroField.To increase the transmission range, plug the auxiliary cable into the AUX IN jack.How is the AUX IN jack wired?Tip is the microphone input; Ring is a line input.The microphone that is connected to the AUX IN does not work or is distorted.You may be using the wrong type of microphone. Contact Phonak for assistance.I can’t get the audio from my TV to MicroField.This requires a special cable from Phonak.Can I charge my MicroField in my car?Yes. Use an adapter that provides a tip positive to the power jack.Troubleshooting

47Compliance Notice

48Phonak MicroField216 MHz transmission:The MicroField transmitter is authorized by rule under the Low Power Radio Service (47 C.F.R. Part95) and must not cause harmful interference to TV reception or United States Navy SPASUR in-stallations. You do not need an FCC license to operate this transmitter. This transmitter may onlybe used to provide: auditory assistance to persons with disabilities, persons who require languagetranslation, or persons in educational settings; health care services to the ill; law enforcementtracking services under agreement with a law enforcement agency; or automated maritime tele-communications system (AMTS) network control communications. Two-way voice communica-tions and all other types of uses not mentioned above are expressly prohibited.Caution: Changes or modifications not expressly approved by the party responsible for compliancecould void the user’s authority to operate Phonak equipment.Compliance NoticesCompliance Notices

49Compliance NoticesFCC StatementThis 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 protectionagainst harmful interference in a residential installation. This equipment generates, uses and canradiate radio frequency energy and if not installed and used in accordance with the instructions,may cause harmful interference to radio communications. However, there is no guarantee thatinterference will not occur in a particular installation. If this equipment does cause harmfulinterference to radio or television reception, which can be determined by turning the equipmentoff and on, the user is encouraged to try to correct the interference by one or more of thefollowing measures:Reorient or relocate the receiving antenna.Increase the separation between the equipment and receiver.Connect the equipment into an outlet on a circuit different from that to which the receiver isconnected.Consult the dealer or an experienced radio/TV technician for help.

50Appendix

I007510012515027530032540042545047551257555067565066277575081287585095096292525050751001252502753003754004254504875505256506256377507257878508259259379007550025507520022525032535037540043750047560057558770067573780077587588785010075002550175200225300325350375412475450575550562675650712775750850862825175150502500100125150225250275300337400375500475487600575637700675775787750200175755025075100125200225250275312375350475450462575550612675650750762725275250150125100750255012515017520023730027540037538750047553760057567568765030027517515012510000251001251501752122752503753503624754505125755506506626253753502502252001755025025507510013720017530027528740037543750047557558755040037527525022520075502502550751121751502752502623753504124754505505625254254003002752502251007550002550871501252502252373503253874504255255375005004753753503253001751501255025001275501751501622752503123753504504624255255004003753503252001751507550250125025150125137250225287350325425437400563538437412388362237212188112876338013131138710021218725031228738840036357555045042540037525022520012510075501300100758720017523730027537538735060057547545042540027525022515012510075380075506217515021237525035036232567565055052550047535032530022520017515011350750012100751372001752752872507006755755505255003753503252502252001751387510000127550112175150250262225713688587562538512387362338262237213188150871121212062371001621372382502137757506506256005754504254003253002752502131501755075630037100751751871508007756756506256004754504253503253002752381752007510088001275501501621258137886876626386124874624383623373132882501872128711210013130623713815011387585075072570067555052550042540037535031325027515017516350751300758750900875775750725700575550525450425400375338275300175200188751003800506225950925825800775750625600575500475450425388325350225250238125150882550012096393883781278876263761258851248746343840033736223726225013716310038631201297595085082580077565062560052550047545041235037525027526315017511350750130N01N02N04N05N08N09N12N13N16N17N18N61N62N52N64N65N68N69N55N72N73N57N76N77N79N60N80216.0125216.0375216.0875216.1125216.1875216.2125216.2875216.3125216.3875216.4125216.4375216.5125216.5375216.575216.5875216.6125216.6875216.7125216.725216.7875216.8125216.825216.8875216.9125216.9625216.975216.9875Receiverf(MHz)TransmitterN01N02N04N05N08N09N12N13N16N17N18N61N62N52N64N65N68N69N55N72N73N57N76N77N79N60N80Frequencies used in other roomsInterference certainInterference likely, keep max. distanceReduced range, keep distance as large as possiblePotential interference in neighboring roomsPotential interference in the same roomNo interferenceAppendix A: Interference Chart (Standard Phonak Frequencies 216 MHz)

IIAppendix B: Channel Selection GuideTo use this guide, find the channel number of your product and note the corresponding channelnumber in MicroField. You will use the MicroField channel number (first column) for programmingor using your unit. 216 MHz ChannelsdleiForciM lennahC ycneuqerF )zHM( kanohPnetsiL cinohP raE ketmoCxeleTRVAsmailliW thgiL deepS ekarDrentneG15210.61210NA110C10N140520.612A214125730.61220NA3125260.612B1240570.612B224245780.61240NB355211.61250NC150C340521.612C234A3225731.612C3325261.612D1440571.612D244B485781.61280ND395212.61290NE190C90N(continued on next page)

IIIdleiForciM lennahC ycneuqerF )zHM( kanohPnetsiL cinohP raE ketmoCxeleTRVAsmailliW thgiL deepS ekarDrentneG540522.612E254C5425732.612E3525262.612F1640572.612F264D6215782.61221NF321C21N315213.61231NG1740523.612G274E7625733.612G3725263.612H1840573.612H284F8615783.61261NH361C715214.61271NJ1940524.612J294G9815734.61281NJ381C81N165215.61216NK112C920525.612K215H01265735.61226NK3Appendix B: Channel Selection Guide

IVChannel Selection Guide - 216 MHz cont.dleiForciM lennahC ycneuqerF )zHM( kanohPnetsiL cinohP raE ketmoCxeleTRVAsmailliW thgiL deepS ekarDrentneG825265.612L1250575.61225NL225I11465785.61246NL342C46N565216.61256NM152C350526.612M235J21185736.612M3285266.612N1450576.612N245K31865786.61286NN3965217.61296NP192C550527.61255NP255L41385737.612P3485267.612R1650577.612R26551275787.61227NR323C27N375218.61237NS133C750528.61275NS27561Appendix B: Channel Selection Guide

VChannel Selection Guide - 216 MHz cont.dleiForciM lennahC ycneuqerF )zHM( kanohPnetsiL cinohP raE ketmoCxeleTRVAsmailliW thgiL deepS ekarDrentneG675738.61267NS3585268.612T1850578.612T28571685788.612T3775219.61277NU173C77N950529.612U29581885739.612U3975269.61297NV193C060579.61206NV20691085789.61208NV304C08N00ENONAppendix B: Channel Selection Guide

VIdleiForciM lennahC ycneuqerF )zHM( kanohPnetsiL cinohP raE ketmoCxeleTRVAsmailliW thgiL deepS ekarDrentneGA10520.27111111A20570.27222221A0001.27AAAAA1.272A30521.27333341A40571.27444451K0002.27K B 2.274K50522.27555561K60572.27666671B0003.27BBBCB3.276B70523.27777791B80573.27888802N0004.27N D 4.278N90524.27999912N00574.270101010122C0005.27CCCEC5.2701C10525.271111111142C20575.272121212152Appendix B: Channel Selection Guide72 MHz Channels

VIIdleiForciM lennahC ycneuqerF )zHM( kanohPnetsiL cinohP raE ketmoCxeleTRVAsmailliW thgiL deepS ekarDrentneGO0006.27O F 6.2721O20526.273131313162O40576.274141414172D0007.27DDDGD7.2741D50527.275151515192D60577.2761616103P0008.27P H 8.2761P70528.277171717113P80578.278181818123E0009.27EEEIE9.2781E90529.279191919143E00579.270202020253E30526.473333333363E40576.474343434373I0007.47IIIOL 12I50527.475353535393I60577.476363636304Appendix B: Channel Selection Guide

VIIIdleiForciM lennahC ycneuqerF )zHM( kanohPnetsiL cinohP raE ketmoCxeleTRVAsmailliW thgiL deepS ekarDrentneGI70522.577373737314I80572.578383838324J0003.57JJJPJ 42J90523.579393939344J00573.570404040454R0004.57R Q 62R10524.5712121264R20574.5722222274F0005.57FFFJF5.5782F30525.5732323294F40575.5742424205S0006.57S K 6.5703S50526.5752525215S60576.5762626225G0007.57GGGLG7.5723G70527.5772727245G80577.5782828255Appendix B: Channel Selection Guide

IXdleiForciM lennahC ycneuqerF )zHM( kanohPnetsiL cinohP raE ketmoCxeleTRVAsmailliW thgiL deepS ekarDrentneGT0008.57T M 8.5743T90528.5792929265T00578.5703030375H0009.57HHNH9.5763H10529.5713131375H20579.572323230600ENONAppendix B: Channel Selection Guide

XChannel Selection Guide - Infrared (IR)dleiForciM lennahC ycneuqerF )zHM(19RIzHk5929RIzHk05239RIzHM60.249RIzHM3.259RIzHM65.269RIzHM8.279RIzHM3.389RIzHM8.3

FM Division Contact InformationTelephone: 1.888.777.7316Website: www.Phonak-US.comAddress:4520 Weaver ParkwayWarrenville, IL 60555-3927Version 031020. Copyright© 2003 Phonak Hearing Systems. All Rights Reserved.

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