AT-216 Wireless Auditory Assistance Kit
Contents
1. 216 0250 MHz 216 1750 MHz 216 5250 MHz 216 7250 MHz 216 9750 MHz GROUP 2 CHANNEL FREQUENCY 216 0750 MHz 216 4250 MHz 216 6250 MHz 216 1125 MHz 216 8750 MHz GROUP 3 216 1250 MHz 216 2875 MHz 216 2750 MHz 216 5375 MHz 216 5250 MHz 216 9375 MHz 216 4125 MHz 216 5625 MHz 216 7375 MHz 216 8375 MHz 216 9625 MHz 216 8250 MHz GROUP 4 216 1750 MHz 216 3250 MHz 216 6750 MHz 216 9250 MHz Section 5 Optional Accessories Optional Accessories 1 oo 9 10 EDC Euro direct audio input single cord 11 EDC V Euro direct audio input V cord BC 216 Snap on belt clip HM 100H Headworn unidirectional LS 3 High efficiency headphones CC 24 Cochlear speech processor cord TM 10 Conference table microphone adaptor LW 216 Rigid specialty antenna Q NBC 9 3 12 Digital 12 station fast charger supplied with AT 216 kit electret microphone two types available HH 185 Hand held microphone boom adaptor CB 48AT Attenuator adaptor cord Section 6 Trouble Shooting Batteries and Battery Charging If Test indicator lamp doesn t illuminate when units are turned on Then If rechargeable batteries are used ensure that they have been allowed to charge at least 14 hours to a full charge Verify that the charging indicator lamps are illuminated when t2. Insert microphone plug into M 216 transmitter microphone jack to mix speaker s voice with auxiliary program Insert siloer plug into the headphone output of the audio source jack transmitter Result A direct connection to M 216 peed pee aig what s being played by your tape transmiter orare 7 RS recorder TV etc and your microphone must be used for PR 216 personal receiver operation Page 10 Section 2 Operation Continued 2 4 Frequency Selection 216 217 MHz The PR 216 personal receiver can operate on one of 57 available frequencies between 216 MHz and 217 MHz COMTEK s channel designations indicate both standard non companded channels and high fidelity companded channels Channels 1 40 are standard non companded channels offering compatibility with other manufacturers receivers Channels 41 60 are high fidelity companded channels for use with COMTEK transmitters COMTEK transmitters automatically transmit the proper modulation when set to channels 1 40 for standard non companded or 41 60 for high fidelity companded channels After you have determined the channel on which you are going to operate position the two rotary switches to indicate the channel The left rotary switch is for tens and the right rotary switch is for ones To select channel 41 216 0250 MHZ position the left rotary switch to point to 4 X10 and position the right rotary switch to point to 1 X1 Refer to frequenc
3. 216 2875 MHz 216 6250 MHz 216 3125 MHz 216 6750 MHz 216 3375 MHz 216 3625 MHz 216 7250 MHz 216 7750 MHz 216 3875 MHz 216 4125 MHz 216 8250 MHz 216 8750 MHz 216 4375 MHz 216 9250 MHz 216 5125 MHz 216 9750 MHz 216 5375 MHz 216 0250 MHz 216 5625 MHz 216 0750 MHz 216 5875 MHz 216 1250 MHz 216 6125 MHz 216 1750 MHz 216 6375 MHz 216 2250 MHz 216 6625 MHz 216 2750 MHz 216 6875 MHz 216 3250 MHz 216 7125 MHz 216 3750 MHz 216 7375 MHz 216 4250 MHz 216 7625 MHz 216 5250 MHz 216 7875 MHz 216 5750 MHz 216 8125 MHz 216 6250 MHz 216 8375 MHz 216 6750 MHz 216 8625 MHz 216 8875 MHz 216 7250 MHz 216 7750 MHz 216 9125 MHz 216 8250 MHz 216 9375 MHz 216 8750 MHz 216 9625 MHz 216 9250 MHz 216 9875 MHz Page 14 216 9750 MHz PR 216 PR 216 216 MHz 216 MHz NON COMPANDED COMPANDED FREQUENCY GROUPS FREQUENCY GROUPS Compatible with COMTEK For COMTEK and other manufacturers equipment only GROUPA GROUP1 CHANNEL FREQUENCY CHANNEL FREQUENCY 216 0125 MHz 216 2125 MHz 216 3625 MHz 216 5875 MHz 216 7625 MHz 216 8875 MHz GROUP B 216 0875 MHz 216 2375 MHz 216 3375 MHz 216 7815 MHz 216 8875 MHz 216 9875 MHz 216 0624 MHz
4. Channel Compatibility If Two transmitters are operating on the same channel within 100 feet from one another you will experience interference which sounds like distorted voices static or chirping sounds Then e When only two transmitters are operating in the same proximity within 100 feet any different channel may be selected for the other transmitter If More than two transmitters are operating in the same proximity Then e The channels must be selected from the same frequency groups in section 4 see page 15 e Up to 5 channels may operate in the same proximity within 100 feet e Each group of 5 channels may operate together if each group is separated by more than 100 feet e Same channel groups may be used together if they are separated by more than 200 feet Note One transmitter can be used with several receivers set to the same channel but one receiver MPORTANT cannot be used with several transmitters set to the same channel This type of incorrect usage will cause cracking and chirping noises making the reception unacceptable Page 19 Section 7 Care and Maintenance Care and Maintenance Avoid excessive heat Don tleave the transmitter or receiver in hot sun on a radiator or near other sources of high temperature Avoid rough handling The receiver and transmitter may be damaged if dropped Use the snap on belt clip whenever possible Remove batteries when you store unit
5. comfortably around the neck with the pendant in front The neckloop can also be concealed underneath clothing 2 Connect the neckloop to the receiver by inserting the neckloop plug into the output receptacle on top of the receiver and turn on the receiver The red LED indicator lights up indicating condition of battery and that the receiver is operating When the transmitter is turned on the LED indicator should display a steady slow flash 3 The receiver should be carried in a pocket or in the belt clip pouch with the neckloop cord or earphone cord fully extended D System operation Caution Check the hearing aid to be certain it is equipped with a T or MT switch position The neckloop will only operate with hearing aids having a T switch Direct audio input to the hearing aid may also be used with a direct audio input cord optional For best listening choose a hearing aid with a microphone which can be turned off when a direct audio input cord is being used see page 8 1 Establish normal listening volume on your hearing aid with the hearing aid set in the M position 2 Switch to the T position on the hearing aid Have the speaker talk using the transmitter microphone with a normal speaking voice 3 Turn the volume control on the receiver clockwise if volume is too soft or counterclockwise if volume is too loud 4 Now alternate between the M and T positions on your hearing aid with the speaker t
6. AT 216 OPERATOR S MANUAL AT 216 Wireless Auditory Assistance Kit CON K 357 West 2700 South Salt Lake City Utah 84115 Phone 800 496 3463 Fax 801 484 6906 http www comtek com Table of Contents Section 1 General Information 1 1 Purpose of Equipment 1 2 Unit and Accessories Supplied 1 3 PR 216 Controls Connectors and Indicators 1 4 M 216 Controls Connectors and Indicators Section 2 Operation 2 1 Operating the System 2 2 Optional EnviroMic and Smart Mic 2 3 Connection Possibilities 2 4 Frequency Selection 2 5 Battery Removal Replacement 2 6 Belt Clip Installation Removal Section 3 Battery Charger Section 4 Frequency Chart Frequency Groups Section 5 Optional Accessories Section 6 Trouble Shooting Section 7 Care and Maintenance Section 8 Warranty and Service 2009 COMTEK All rights reserved Print Release Date 01 23 2009 AT 216 Digitally Synthesized Wireless Auditory Assistance Kit A Close Up On Sound Page1 Section 1 General Information Introduction Thank you for purchasing the COMTEK AT 216 FM wireless auditory assistance system For over 35 years COMTEK FM systems have successfully proven to be an effective way to help the hearing impaired individual in difficult listening situations The new AT 216 FM system combines the experience and integrity of COMTEK s prece
7. Allows transmitter to use line level earphone level or fixed AUX as an audio source also charging of rechargeable battery with NBC 9 2C charger AUDIO VOICE MODULATION INDICATOR This indicator is used in making adjustment with the Audio Input Gain Control Q MIC ANTENNA JACK This jack accepts an electret type microphone having a 36 long cord witha micro mini 2 5mm mono plug This jack is also used for the screw in specialty antenna when the auxiliary audio input is used POWER BATTERY TEST INDICATOR This LED indicator will illuminate continuously when the unit is on indicating normal operation When the battery voltage drops below 6 volts the LED will flash rapidly indicating that a new battery or charging is needed OPTIONAL MIC MUTE SWITCH This switch turns off the voice from the microphone without turning off the transmitter carrier allowing the auxiliary input program to remain on O AUDIO INPUT GAIN CONTROL This isa microphone and AUX level input gain control This control is used with the Voice modulation indicator ON OFF SWITCH This switch turns the transmitter on and off Page5 Section 2 Operation 2 1 Operating the System A Before operating the system 1 Ensure that the M 216 transmitter and the PR 216 receiver are on the same channel see frequency selection instructions in Section 2 4 2 Check that new 9 volt alkaline batteries have been installed in both the rec
8. Built In Environmental Mic Audio Shoe Le vel Gain Control Adjustment Page 8 Section 2 Operation Continued 2 2 Optional EnviroMic and Smart Mic Continued 1 The EnviroMic option allows both the environmental sounds and the speaker s voice from the transmitter to be heard simultaneously The Smart Mic option automatically prioritizes the speaker s voice from the transmitter over the environmental sounds When the speaker stops talking the Smart Mic immediately amplifies the environmental sounds The environmental gain is set at the factory to a suitable level however if a gain adjustment is necessary the following procedure should be used a Check that the environmental mic switch is turned ON set to the right See Section 1 3 b With the small screwdriver provided turn the microphone gain control fully counterclockwise for low gain before the PR 216 receiver power switch is turned ON c Slowly turn the environmental microphone gain control clockwise until your voice level matches the voice level of the speaker using the wireless microphone transmitter If higher microphone sensitivity level is required additional gain can be used but only up to the threshold of feedback Note Higher gain settings will bring up the voice signal as well as the background noise Higher gain settings should only be used in a low noise environment d The Smart Mic option incorporates a speech recognition circuit
9. However excessively high environmental noise level around the M 216 transmitter s clip on omni directional microphone may cause the Smart Mic s voice recognition function to not operate properly It may then be necessary to adjust the microphone sensitivity control down or use the optional HH 100C head worn noise cancelling microphone 2 The option P micro mini 2 5mm jack uses the M 4020P plug in environmental microphone for either EnviroMic or Smart Mic operation This input jack may also be used with other accessories such as hand held directional microphones and clip on speech training microphones Consult COMTEK s technical services to ensure compatibility Page9 Section 2 Operation Continued 2 3 Connection Possibilities The CB 48AT and the CB 36ST are specialty adaptor cables that must be used when connecting the M 216 transmitter or the PR 216 personal receiver to other electronic audio devices To Simultaneously Record and Monitor the Speaker Using the Optional CB 48AT Cord Insert black plug into microphone input jack of cassette recorder Neckloop or other transducer devices plug into silver monitoring output jack Insert red plug into PR 216 receiver Result A direct link from the speaker to you and your recorder for playback at your convenience PR 216 receiver Using the CB 36ST Cord to Transmit A Program From Your Tape Recorder Stereo TV or Any Audio Source
10. NBC 9 2C charger EnviroMic GAIN CONTROL Optional Q VOLUME CONTROL This control has 50 dB of range to adjust the audio output for a comfortable listening level clockwise for maximum level RECEIVER STATUS INDICATOR This LED indicator will display three functions a Continuous illumination No signal b Steady slow flash Receiving signal c Rapid flash Low battery Additionally there is an audible beeping to indicate a low battery ON OFF SWITCH This switch turns the receiver on and off BUILT IN ENVIRONMENTAL MIC PLUG IN MICROPHONE Optional See pages 8 and 9 for details Page4 Section 1 General Information Continued 1 4 M 216 Controls Connectors and Indicators OPTIONAL COMPAND AUTO OFF SWITCH This switch overrides the automatic selection of the companded channels for non companded operation This switch should remain in the Auto position CHANNEL SWITCHES These rotary switches are set to the same channel as the receiver Actual frequency of operation must agree with the receiver See page 14 for frequency selection chart BATTERY COMPARTMENT The battery compartment features a hinged battery cover and an alignment system that ensures proper battery polarity Battery installation and removal is facilitated by simply manipulating the bottom of the M battery Battery Cover Latch AUXILIARY AUDIO INPUT JACK
11. alking and adjust the volume on the receiver until it is about equal in both settings Page7 Section 2 Operation Continued 2 2 Optional EnviroMic and Smart Mic The PR 216 may be equipped or may be retrofitted with the optional EnviroMic or Smart Mic feature for assistive listening applications where both environmental sounds and the speaker s voice from the transmitter must be heard This built in or plug in omnidirectional environmental microphone has been equalized to enhance speech discrimination when used with hearing aids headphones or button transducers When the PR 216 with EnviroMic or Smart Mic is used with a hearing aid and neckloop or direct audio input cords the hearing aid determines the frequency response and sound pressure level SPL delivered to the ear when the speaker uses the wireless microphone transmitter Note The neckloop will only operate hearing aids having a T switch Direct audio input cord to the hearing aid may also be used if the hearing aid has an audio input cord shoe with a level control For best listening a hearing aid which can operate in the T position only is preferred when using the PR 216 with the EnviroMic or Smart Mic Typical Hearing Aid Functions M Microphone on for normal use Plug in M 4020P T Induction coil pick up for FM Microphone MT Position combines microphone O N Option P ii RUM Micro mini Jack O Hearing aid in off position
12. d Noisy or Distorted Audio 1 You hear excessive background noise or distortion Then Turn the AT 216 FM system off and leave the hearing aids on in the T position to determine if the noise or distortion is still present in the hearing aids If the noise or distortion is still present the hearing aids will need to be checked by your hearing aid specialist If the noise or distortion is not present in the hearing aids check the following items 1 Check batteries in the receiver and transmitter The cut off voltage for normal operation is 6 volts 2 Check that the M 216 transmitter and PR 216 receiver are set to the same channel and that the compand Auto Off switch is set to the Auto position 3 Check the microphone gain setting on the M 216 transmitter for normal operation with the Voice modulation indicator see page 6 section 2 1 B 3 4 Monitor the system using the SM N earphone assembly plugged directly into the PR 216 receiver 5 Operating at distances greater than 200 feet may cause excessive noise 6 Coiling or bunching the microphone cord of the M 216 transmitter will reduce the range of the system and could cause excessive noise 7 Microphone is defective It is possible to damage the microphone with excessive heat or moisture If the above steps do not correct the problems the AT 216 system must bereturned to COMTEK for service Page 18 Section 6 Continued
13. d for initial use Make sure that M 216 transmitter and the PR 216 receiver are turned off Insert the NBC 9 2C charger into a 115 volt AC outlet 4 Plug the charger output cords into the output receptacle of the PR 216 receiver and auxiliary input receptacle of the M 216 transmitter The red indicator on the receiver and the green indicator on the transmitter should not be lit Note that the red charging indicators on the NBC 9 2C should be lit Allow the batteries to charge for 14 hours which provides 8 hours of operation when Ni MH type batteries are used Note Excessive charging may reduce the life cycle expectancy and capacity of the batteries Batteries should never be charged more than 72 hours with the NBC 9 2C charger Section 4 Frequency Chart Frequency Groups L1 Non Companded Channels For use with COMTEK and other manufacturers Educational Standard CHANNEL SWITCH POSITION FREQUENCY 216 0125 MHz O Companded Channels For use with COMTEK equipment only CHANNEL SWITCH POSITION FREQUENCY 216 0250 MHz 216 0375 MHz 216 0750 MHz 216 0625 MHz 216 1250 MHz 216 0875 MHz 216 1750 MHz 216 1125 MHz 216 2250 MHz 216 1375 MHz 216 2750 MHz 216 1625 MHz 216 3250 MHz 216 1875 MHz 216 3750 MHz 216 2125 MHz 216 4250 MHz 216 2375 MHz 216 5250 MHz 216 2625 MHz 216 5750 MHz
14. ding models with the advantages of today s digital technology Plus the all new rugged packaging design of the receiver and transmitter ensures that this system will hold up to the rigors of every day use This product is made in the U S A with strict quality control procedures to ensure your satisfaction A careful reading of this quick reference manual will acquaint you with the characteristics of the AT 216 system and ensure ease of operation 11 Purpose of Equipment The AT 216 system functions as a remote microphone for the user overcoming the greatest listening problems for the hearing impaired High levels of background noise Reverberation effects Distance between the speaker and listener The AT 216 system enables persons with impaired hearing to comfortably take part in activities at school home work and play In addition to a hearing aid the user wears the personal receiver and the neckloop retransmit device The PR 216 personal receiver picks up the voice of the person wearing the M 216 transmitter and the neckloop then retransmits it to the hearing aid for Close Up Sound If no hearing aids are used the receiver may also be used with headphones instead of the neckloop Now the person with impaired hearing has a direct link to the speaker at greater distances for improved listening clarity and better understanding Page2 Section 1 General Information Continued o AN Ol d CO N e Personal rece
15. e 800 496 3463 Fax 801 484 6906 http www comtek com
16. eiver and the transmitter or that the rechargeable batteries have been recharged 3 If9 volt rechargeable batteries are used ensure that they have been allowed to charge at least 14 hours to bring to a full charge see battery charger instructions in Section 3 B Wireless microphone transmitter set up 1 Connect the microphone to the transmitter by inserting the microphone plug into the receptacle on top of the transmitter Note The 36 inch microphone cord functions as part of the transmitter s antenna The cord should be extended Coiling or bunching the microphone cord will reduce the range of the system 2 When the power switch is turned on the green indicator lights up indicating condition of battery and that the transmitter is operating 3 While speaking into the microphone with a normal speech level observe the voice level indicator to ensure proper modulation A normal speech level should produce low to moderate luminescence and a loud voice should produce a full bright luminescence With the small screwdriver set the audio input gain control up or down until proper modulation is obtained 4 The transmitter should be carried in a pocket or with the belt clip The lapel microphone should be clipped high on the lapel for best performance Page6 Section 2 Operation Continued 2 1 Operating the System Continued C Receiver set up 1 Slip the neckloop over the listener s head and let it rest
17. for a long time When battery becomes exhausted it may leak and damage the instrument Even a new battery may leak because of a slight imperfection Occasionally check for leakage Keep battery terminals and contacts clean Inspect to ensure that they are not corroded If they are polish them with a pencil eraser Inspect cords and connectors frequently they are subject to wear Replace frayed cords before they break F C C Statement This transmitter is authorized by rule under the low power radio service 47 C F R Part 95 and must not cause harmful interference to TV reception or United States Navy SPASUR installations You do not need an F C C licence to operate this transmitter This transmitter may only be used to provide auditory assistance to persons with disabilities persons who require language translation or persons in educational settings health care services to the ill law enforcement tracking services under agreement with a law enforcement agency or automated maritime telecommunications system AMTS network control communications Two way voice communications and all other types of uses not mentioned above are expressly prohibited Page 20 Section 8 Warranty and Service Warranty COMTEK warrants this product to be free from defects in workmanship and material under normal use and conditions for a period of one year from date of original purchase Items such as batteries neckloops and cords are no
18. he charging plugs are plugged into the units The units power switches must be in the off position for charging e If the test indicator lamp still does not illuminate after a full charge verify thatthe system is operational by using a new alkaline battery If the system is operational with alkaline batteries the rechargeable batteries or charger may need to be replaced The AT 216 system must be returned to COMTEK for service if the test indicator lamps do not illuminate when new alkaline batteries are used Transmitter Audio Problem If There is no visual indication on the Voice modulation level indicator when speaking into the microphone of the M 216 transmitter Then Turn up the microphone gain setting clockwise until the voice modulation indicator illuminates with speech level Make sure the optional muting switch is in the Mic on position Check the CM 183RT microphone for a broken or frayed microphone cord that may cause intermittent operation Test the modulation indicator with the auxiliary audio input using a line level signal and the CB 36ST auxiliary audio input cable to verify normal operation If the auxiliary audio input activates the voice modulation indicator normally the CM 183RT microphone may need to be repaired or replaced The AT 216 system must be returned to COMTEK for service if the auxiliary input test does not activate the voice modulation indicator Page 17 Section 6 Continue
19. iver PR 216 Neckloop transductor NTC 102 Two belt clips BC 216 s Transmitter M 216 Microphone and clip CM 183RT Battery charger NBC 9 2C Rechargeable batteries NH 9 200 Attenuator adaptor cord CB 36ST Earphone assembly SM N 10 11 12 Unit and Accessories Supplied Flexible specialty antenna FWA 216 Convenient carrying case C 216 Conference table microphone adaptor TM 10 Section 1 General Information Continued 1 3 PR 216 Controls Connectors and Indicators ENVIRONMENTAL MIC OFF SWITCH 0 2 This switch turns the optional EnviroMic or Smart Mic on and off Set to right for ON and to left for OFF 9 CHANNEL SWITCHES These rotary switches are set to the same channel as the transmitter Actual frequency of operation must agree with the transmitter See page 14 for frequency selection chart BATTERY COMPARTMENT The battery compartment features a hinged battery cover and an alignment system that ensures proper battery polarity Battery installation and removal is ees facilitated by simply manipulating the bottom of the Battery Cover battery Latch AUDIO OUTPUT JACK This stereo 3 5 mm audio output jack accommodates any 32 to 125 ohms headphone either stereo or mono also charging of rechargeable battery with
20. t covered by the warranty Damage due to misuse ill treatment and unauthorized modification and repairs are not covered by this warranty COMTEK is not liable for consequential damages arising out of any failure of the equipment to perform as intended COMTEK shall bear no responsibility or obligation with respect to the manner of use of any equipment sold by it COMTEK SPECIFICALLY DISCLAIMS AND NEGATES ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF SUCH EQUIPMENT INCLUDING WITHOUT LIMITATION ANY WARRANTY THAT THE USE OF SUCH EQUIPMENT FOR ANY PURPOSE WILL COMPLY WITH APPLICABLE LAWS AND REGULATIONS Service Policies Warranty repairs must be done by COMTEK Only factory technicians are authorized to perform warranty service on the AT 216system Before returning the AT 216 for service a Return Authorization Number should be obtained from the service department by calling 1 800 496 3463 or 1 801 466 3463 Return the unit to the factory with the original or comparable packing Do not send hearing aids to COMTEK Send them to the appropriate repair center servicing your hearing aid brand COMTEK will pay for insurance and ground return shipping costs in the United States for all warranty service COMTEK 357 West 2700 South Salt Lake City Utah 5 Phone 800 496 3463 Fax 801 484 6906 Web www comtek com E mail sales comtek com SOLA 357 West 2700 South Salt Lake City Utah 84115 Phon
21. y charts on pages 14 and 15 for selectable frequencies Page 11 Section 2 Operation Continued 2 5 Battery Removal Replacement Pull back battery door latch and allow battery cover door to spring open To remooe battery simply manipulate the bottom of battery out of the compartment and remove To insert battery face battery with negative W terminal in line with large hole in battery com partment press battery into compartment and close battery door until it snaps shut 2 6 Belt Clip Installation Removal STEP 2 N Rotate belt clip down onto case Apply pressure on both sides of clip snapping clip retainers into slots Installation STEP 1 Hook belt clip Retainer slot Belt clip removal indent retaining lip over front case ridge Removal Flex out and pull down with your thumb or a large coin quarter to unsnap belt clip from case Section 3 Battery Charger Battery Charger The NBC 9 2C charger supplied with the AT 216 system will recharge Nickel Metal Hydride Ni MH batteries Ni MH batteries are supplied with the AT 216 system Note Do not attempt to charge alkaline batteries with the NBC 9 2C charger To charge the AT 216 system please take the following steps 1 2 3 Make sure that rechargeable batteries are installed in the receiver and transmitter Alkaline batteries must not be charged with the NBC 9 2C charger Alkaline batteries are only installe
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