Audio Technica ATWR220 Communications Receiver User Manual P51672 Freeway 220 OM

Audio-Technica Corporation Communications Receiver P51672 Freeway 220 OM

users manual

220 Series ProfessionalVHF Wireless SystemsATW-221UniPak™SystemATW-222Handheld Microphone SystemInstallation and Operation
Professional VHF Wireless SystemsInstallation and Operation2CAUTION! Electrical shock can result from removal ofthe receiver cover. Refer servicing to qualified service personnel. No user-serviceable parts inside. Do notexpose to rain or moisture.The circuits inside the receiver and transmitter have beenprecisely adjusted for optimum performance and compli-ance with federal regulations. Do not attempt to open thereceiver or transmitter. To do so will void the warranty,and may cause improper operation.This device complies with part 15 of the FCC Rules.Operation is subject to the condition that this device doesnot cause harmful interference.This device complies with INDUSTRY CANADA R.S.S. 210,en conformité avec IC: RSS-210/CNR210. Operationis subject to the following conditions: 1) This device maynot cause harmful interference and 2) this device mustaccept any interference received, including interferencewhich may cause undesired operation.Thank you for choosing an Audio-Technica professional wirelesssystem. You have joined thousands of other satisfied customerswho have chosen our products because of their quality, perfor-mance and reliability. This wireless microphone system is the successful result of years of design and manufacturingexperience.This professional wireless system includes a receiver and eithera body-pack or a handheld transmitter on a specific crystal-controlled frequency.The receiver features true diversity reception. Two antennasfeed two completely independent RF sections on the same frequency; automatic logic circuitry continuously compares andselects the superior received signal, providing better soundquality and reducing the possibility of interference and dropouts.The receiver is half-width for a standard 19" (1U) rack mount. Please note that in multiple-system applications there must be a transmitter-receiver combination on a separatefrequency foreach input desired (only one transmitter for each receiver).Operating frequency information will be found on page 6.The versatile ATW-T201 UniPak body-pack transmitter has botha high-impedance input for instruments, and a low-impedanceinput with bias connection for use with dynamic and electretcondenser microphones. The ATW-T202 handheld transmitterfeatures a unidirectional dynamic microphone element.Both the body-pack and handheld transmitters use internal 9-volt batteries and have Off/Standby/On switches, input Trim(level) adjustments and battery-save switches.IntroductionSee pages 8-9 for illustrations.Notice to individuals with implanted cardiac pacemakersor AICD devices:Any source of RF (radio frequency) energy mayinterfere withnormal functioning of the implanted device. All wirelessmicrophones have low-power transmitters (less than 0.05watts output) which are unlikely to cause difficulty, especial-ly if they are at least a few inches away. However, since a“body-pack” mic transmitter typically is placed against thebody, we suggest attaching it at the belt, rather than in a shirtpocket where it may be immediately adjacent to the medicaldevice. Note also that any medical-device disruption willcease when the RF transmitting source is turned off. Pleasecontact your physician or medical-device provider if you haveany questions, or experience any problems with the use ofthis or any other RF equipment.
Receiver Installation3LocationFor best operation the receiver should be at least 3' (1 m)above the ground and at least 3' (1 m) away from a wall ormetal surface to minimize reflections. Keep the receiver antennas away from noise sources such as digital equipment,motors, automobiles and neon lights, as well as away fromlarge metal objects. In multi-channel systems, positionreceivers at least 3' (1 m) apart and keep operating transmit-ters at least 6' (2 m) from the receivers to help assure maximum RF performance.Output ConnectionThere are two audio outputs on the back of the receiver: balanced (160 mV) and unbalanced (280 mV). Use shieldedaudio cable for the connection between the receiver and themixer. If the input of the mixer is a 1/4" jack, connect a cablefrom the 1/4" unbalanced audio output on the back of the receiver to the mixer. If the input of the mixer is an XLR-typeinput, connect a cable from the balanced XLR-type audio output on the back of the receiver to the mixer. The two isolated audio outputs permit simultaneous feeds to both unbalanced and balanced inputs. For example, both aguitar amp and a mixer can be driven by the receiver. Front Panel Controls and Functions (Fig. A)1. POWER SWITCH: Press power switch in to turn on2. POWER INDICATOR: Lights when power is supplied to the receiver.3. TUNER OPERATION INDICATOR: Indicates which tuner has the better reception and is in operation.4. AF PEAK INDICATOR: Only lights when audio distortion is present at maximum modulation. Not affected by position of AF Level Control. 5. TUNER OPERATION INDICATOR: Indicates which tuner has the better reception and is in operation.6. AF LEVEL CONTROL: Adjusts the level at both audio output jacks.Power ConnectionConnect the included [need number] adapter to the DC powerinput on the back of the receiver. Then plug the adapter into astandard 120 volt 60 Hz AC power outlet.AntennasAttach the antennas to the antenna input jacks.Receiver Controls and FunctionsRear Panel Controls and Functions (Fig. B)7. ANTENNA INPUT JACK: BNC-type antenna connector forTuner “A.” Attach the antenna directly, or extend it with a low-loss antenna cable. 8. SQUELCH CONTROL: Adjusts level of noise-muting circuit (Preset at factory but can be adjusted as circumstances warrant.)9. BALANCED AUDIO OUTPUT JACK: XLRM-type connector. A standard 2-conductor shielded cable can be used to connect the receiver output to a balanced aux-level input on a mixer.10. GROUND LIFT SWITCH: Disconnects the ground pin of the balanced output (9) from ground. Normally, the switch should be to the left (ground connected). If hum caused bya ground loop occurs, slide switch to the right.11. UNBALANCED AUDIO OUTPUT JACK: 1/4" phone jack. Can be connected to an unbalanced aux-level input of a mixer or tape recorder.12. DC POWER INPUT: For the provided [NEED NUMBER] adapter, or other 12-18V DC source. (Receiver requires 500 mA.) [CORRECT?]13. ANTENNA INPUT JACK: BNC-type antenna connector forTuner “B.” Attach the antenna directly, or extend it witha low-loss antenna cable.
4Transmitter SetupBattery Selection and InstallationAn alkaline 9-volt battery is recommended. Make certain thetransmitter power switch is Off before installing or changingbatteries.When inserting the battery, observe correct polarity asmarked inside the battery compartment.The transmitterhousings are designed to prevent incorrect installation of thebattery; do not force the battery in.Reversed batteries maycause damage to the transmitter.UniPak™Transmitter Battery Installation1. Slide off the battery cover as shown in Figure C.2. Carefully insert a fresh 9V alkaline battery, observing polarity markings.3. Replace the battery cover (Fig. D).Handheld Transmitter Battery Installation1. While holding the upper part of the transmitter body just below the ball-screen, unscrew the lower body cover and slide it downward to expose the battery compartment (Fig. E). Do not attempt to pull the lower body farther down, or to gain access to the electronics.2. Lift the white “battery keeper” arm until it sticks straight out from the mic body (no higher). Then carefully insert a fresh 9V alkaline battery, observing polarity markings.3. Screw the body back together. Do not overtighten.Battery Condition IndicatorThe red battery condition indicator (Fig. G/H) should light strongly with a fresh battery. As the battery weakens, the indicator will grow dimmer. When the indicator becomes verydim or goes out, there is little life left in the battery. Replace itat once for continued operation of the transmitter.All transmitters feature battery-save switches (Fig. C/E). As supplied, the switch is set in the High position for maximumrange. Switching to the Low position increases battery life byreducing power. (Note: Effective range decreases when theswitch is set in Low position.)UniPak™ Transmitter Input ConnectionConnect an audio input device (microphone or guitar cable) tothe input connector on the bottom of the transmitter. The cable connector latches automatically when inserted into thetransmitter jack. To unlatch and remove the connector, simplypull up on the connector’s knurled metal collar.A number of Audio-Technica professional microphones andcables are available separately, pre-terminated with a UniPakinput connector (see “Optional System Accessories” on page 7).Transmitting AntennaThe UniPak transmitter includes a permanently attached flexibleantenna. For best results, allow the antenna to hang freely andfull length from the bottom of the transmitter. If the receivedsignal is marginal, experiment with different transmitter posi-tions on your body or instrument; or try repositioning the receiver. Do not attempt to remove, replace or change thelength of the transmitting antenna.See pages 8-9 for illustrations.
5Ten Tips To Obtain The Best ResultsSystem Operation1. Use only fresh alkaline batteries. Do not use “general purpose” (carbon-zinc) batteries.2. Position the receiver so that it has the fewest possible obstructions between it and the normal location of the transmitter. Line-of-sight is best.3. The transmitter and the receiver should be as close together as conveniently possible, but not less than 6' (2 m).4. Do not place the receiver antennas within 3' (1 m) of another receiver or antenna.5. The receiver antennas should be kept away from any metal.6. A receiver cannot receive signals from two transmitters at the same time.7. In the UniPak transmitter, the “MT” or “GT” input control notin use should be set to minimum.8. If the receiver output is set too low, the overall signal-to-noise ratioof the system may be reduced. Conversely, if the volume control of the receiver is set too high, it may over-drive the input of the mixer/amplifier, causing distortion. Adjust the output level of the receiver so the highest sound pressure level going into the microphone (or the loudest instrument playing level) causes no input overload in the mixer, and yet permits the mixer level controls to operate in their “normal” range (not set too high or too low). This provides the optimum signal-to-noise for the entire system.9. Turn the transmitter off when not in use. Remove the battery if the transmitter is not to be used for a period of time.10. Unplug the receiver from the AC outlet when the system is not in use.Turn down the receiver AF level control and the mixer/amplifierlevel before starting up the wireless system. Do notswitch onthe transmitter yet.Receiver on...Press the power switch. The green Power indicator on the frontpanel will light. Transmitter on...When the transmitter is switched on, the receiver’s yellow RFsignal indicator will light. The transmitters have a 3-positionpower switch. When the switch is set to “Standby” (ST orST.BY), the transmitter produces RF with no audio signal. Whenthe switch is “On,” the transmitter produces both RF andaudio. Excessive audio input to the transmitter will cause thereceiver’s red AF Peak indicator to light.Receiver VolumeUnder typical operating conditions, the receiver's volume control should be turned all the way up, with overall systemaudio gain adjusted at the mixer or amplifier.Receiver SquelchThe squelch control on the rear panel of the receiver is presetat the factory, but can be adjusted if you must use the systemin a high RF interference area. If there is audio output from thereceiver when your transmitter is off, adjust the squelch controlso the system will receive the signal from your transmitter but“squelch” or eliminate the unwanted background RF noise.This adjustment can cause a reduction in useable range of thewireless transmitter, so set the control to the lowest positionwhich reliably mutes the unwanted RF signals.Input Level AdjustmentInput trimmer controls in the transmitters enable you to maximize performance for a particular microphone or guitar sensitivity, or to adjust for different acoustic input levels.Adjusting Input Level - UniPak TransmitterSlide the battery cover off the top part of transmitter andremove the screwdriver from its clip (Fig. C). Gently turn boththe “MT” (Mic Trimmer) and “GT” (Guitar Trimmer) controls totheir full counterclockwise positions (toward “LO”).• Microphone: Adjusting input levelGently turn only the “MT” (Mic Trimmer) control all the way up(clockwise, toward “Hi”). Check for excessive gain by speak-ing/singing into the microphone at typically-loud levels whilewatching the receiver’s AF Peak indicator. If the AF Peak indica-tor does light, turn the MT control slightly counterclockwiseuntil the AF Peak indicator no longer lights with maximum audioinput to the transmitter.• Guitar/Instrument: Adjusting input levelGently turn only the “GT” (Guitar Trimmer) control all the wayup(clockwise, toward “Hi”). Check for excessive gain by playing at typically-loud levels while watching the receiver’s AFPeak indicator. If the AF Peak indicator does light, turn the GTcontrol slightly counterclockwise until the AF Peak indicator nolonger lights with maximum instrument input to the transmitter.After adjusting input level, return the screwdriver to its clip andreinstall the battery cover. No further transmitter gain adjust-ments should be needed, as long as the input device and theacoustic input level are not changed.Adjusting Input Level - Handheld TransmitterUnscrew the lower body cover and slide it downward, exposingthe screwdriver and Gain Trimmer control (Fig. F). Remove thescrewdriver from its clip. Gently turn the control to its full clock-wise position (toward the side marked “H”), the factory setting.Check for excessive gain by speaking/singing into the micro-phone at typically-loud levels while watching the receiver’s AFPeak indicator. If the AF Peak indicator does light, turn the GainTrimmer control slightly counterclockwise until the AF Peak indicator no longer lights with maximum audio input to themic/transmitter.Return the screwdriver to its clip and close and secure thelower body. No further transmitter gain adjustments should be needed, as long as the acoustic input does not change significantly.CAUTION!The small trimmer controls are delicate; useonly the supplied screwdriver. Do not force the trimmersbeyond their normal 190orange of rotation.Return the screwdriver to its storage clip when not in use.
6System Operating FrequenciesFrequency SelectionEach transmitter/receiver system operates on a single factory-aligned, crystal-controlled frequency. Available frequencies areshown in the chart below.Operating frequency is specified by a two character code, such as “T2,” in addition to the actual frequency in MHz. Thefrequency of each transmitter appears on a label on the outsideof the unit. The frequency of each receiver appears on a labelon the bottom of the unit and the frequency of each systemappears on the outer carton. For future reference, please recordthem in the space provided below.RF InterferenceIf you encounter receiving interference (from other than anoperating TV station), often it can be eliminated by adjusting thereceiver’s squelch control, as described on page 5.Please note that wireless frequencies are shared with otherradio services. According to Federal CommunicationsCommission regulations, “Wireless microphone operations areunprotected from interference from other licensed operationswithin the band. If any interference is received by anyGovernment or non-Government operation, the wireless microphone must cease operation...”If you need assistance with operation or frequency selection,please contact your dealer or the A-T professional division.Extensive wireless information also is available on the A-T Website at www.audio-technica.com.For future reference, please record your system information here (the serial numbersappear near the screwdriver clip in each transmitter, and on the bottom of each receiver):Operating FrequencyFreq. Code Frequency • MHzReceiverModel ATW-R220 Serial NumberTransmitterModel ATW-T20 Serial NumberApplication Freq. Code Freq. (MHz)• Traveling frequencies: T2 169.505(Normally work anywhere in the U.S.A. and T3 170.245Canada.) T8 171.905Systems on these frequencies may be combined for up to three simultaneous operating channels.1/2
7Optional System AccessoriesWIRELESS ESSENTIALS™ MICROPHONES AND CABLESAll Wireless Essentials accessories are terminated for use with ATW-T201and other UniPak™transmitters.AT829cW Miniature cardioid condenser lavalier microphone. Includes clothing clip and windscreen. MT830cW Subminiature omnidirectional condenser lavaliermicrophone. Includes clothing clip and windscreen.MT830cW-TH “Theater” model, same as MT830cW except beige color mic and cable for concealment.AT831cW Miniature cardioid condenser lavalier microphone. Includes clothing clip and windscreen.AT851cW Surface-mount wide-range hemi-cardioid condenser microphone.AT857AMLcW 19" gooseneck cardioid microphone. Mounts to 5/8"-27 thread. Includes windscreen.AT889cW Headworn noise-canceling condenser microphone. Includes windscreen and cable clip.AT898cW Subminiature cardioid condenser lavalier microphone. Includes clothing clip base, viper clip base, magnet clip base,three single mic holders, two double mic holders and two windscreens.AT899cW Subminiature omnidirectional condenser lavalier microphone. Includes AT899AK accessory kit.AT899cW-TH “Theater” model, same as AT899cW except beige color mic and cable for concealment. Includes AT899AK-TH accessory kit.ATM35cW Cardioid condenser instrument microphone. Includes AT8418 clip-on instrument mount.ATM73cW Headworn cardioid condenser microphone. Includes windscreen.ATM75cW Headworn cardioid condenser microphone. Includes windscreen.PRO 8HEcW Headworn hypercardioid dynamic microphone. Includes windscreen and cable clip.PRO 35xcW Cardioid condenser instrument microphone. Includes AT8418 clip-on instrument mount.AT-GCW Hi-Z instrument/guitar cable with 1/4" phone plug. XLRW Connecting cable for UniPak transmitter with an XLRF-type input connector, for Lo-Z microphones with XLRM-type output terminations.OTHER ACCESSORIESAT8114 Foam windscreen for handheld transmitter.AT8141 Water-resistant pouch for UniPak transmitter.AT8390 Shielded audio cable with 1/4" to 1/4" phone plugs. Available in a variety of lengths. (Also available with one straight and one 90° phone plug as the AT8316.)AT8456a Stand clamp for handheld transmitter, 5/8"-27 threads.ATW-VP10 Vinyl pouch with belt clip to hold UniPak transmitter.Specifications†OVERALL SYSTEMOperating Frequency VHF high band, 169 MHz to 172 MHzFrequency Stability ±0.005%Modulation Mode FMMaximum Deviation ±15 kHzOperating Range 200' minimumOperating Temperature Range 40° F (4° C) to 110° F (43° C)Frequency Response 80 Hz to 13 kHzRECEIVERReceiving System Dual independent receivers, automatic-switching diversity receptionImage Rejection 50 dB minimumSignal-to-noise Ratio 80 dB at 10 kHz deviation (IEC-weighted),maximum modulation 15 kHzTotal Harmonic Distortion ≤1% (10 kHz deviation at 1 kHz)Sensitivity 20 dBµV for 60 dB S/N (IEC-weighted)Audio Output 350 mV (1 kHz modulation, 10 kHz deviation, 100k ohm load)Output Connector1/4" TS (“mono”) phone jackPower Supply 120V AC 60 Hz, 6 VA; or 12V DC, 200 mA,center positive, with external DC supplyDimensions 8.27" (210.0 mm) W x 1.72" (43.5 mm) H x 4.73" (120.0 mm) DNet Weight 18.9 oz (536 grams); without AC adapter,11.9 oz (336 grams)Accessories Included AD1202A 120V docking AC adapter; 120V AC IEC cordsetUNIPAK™TRANSMITTERRF Power Output 10 mW High position, 2 mW Low position,typicalSpurious Emissions Under federal regulationsDynamic Range ≥90 dB, A-weightedInput Connections High impedance, low impedance, biasBattery 9V (NEDA type 1604) alkaline, not includedCurrent Consumption 30 mA typicalBattery Life Approximately 15 hours in High positionApproximately 20 hours in Low positionDimensions 2.56" (65.0 mm) W x 4.33" (110.0 mm) H x 1.00" (25.4 mm) DNet Weight (without battery) 2.8 oz (78 grams)HANDHELD TRANSMITTERRF Power Output 10 mW High position, 2 mW Low position,typicalSpurious Emissions Under federal regulationsDynamic Range ≥90 dB, A-weightedMicrophone Element Dynamic unidirectionalBattery 9V (NEDA type 1604) alkaline, not includedCurrent Consumption 30 mA typicalBattery Life Approximately 15 hours in High positionApproximately 20 hours in Low positionDimensions 9.50" (241.3 mm) long, 2.10" (53.3 mm) diameterNet Weight (without battery) 12.7 oz (360 grams)Accessory Included AT8456a stand clamp†In the interest of standards development, A.T.U.S. offers full details on its test methods to other industry professionals on request.
Receiver Controls and FunctionsFigure A (p. 3)Figure B (p. 3)POWER21 38 DC IN 12V~18V500 mAAF OUT BALANCEDGROUNDLIFTAF OUT UNBALANCEDGROUNDANT. A. ANT. B.SQUELCH ADJ.971110 12 134568
Transmitter Controls and FunctionsFigure C (p. 4) Figure D (p. 4)Figure E (p. 4)Figure F (p. 5)Figure G (p. 4) Figure H (p. 4)➞➞9Battery PolarityDiagramBattery-Save Switch(under screwdriver clip)Guitar Trimmer(GT)MicrophoneTrimmer (MT)Battery PolarityDiagramBattery-Save SwitchBATT.ON OFFST.BYINPUT POWER BATT. ANTOFF ONSTBattery ConditionIndicatorPower SwitchOn/Standby/OffBattery ConditionIndicatorInputConnectorPower SwitchOff/Standby/OnAntennaScrewdriverGain Trimmer
Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224 330/686-2600 www.audio-technica.comP51672 ©2004 Audio-Technica U.S., Inc. Printed in U.S.A.One-Year Limited WarrantyAudio-Technica professional wireless systems purchased in the U.S.A. are warranted for one year from date of purchase by Audio-Technica U.S., Inc.(A.T.U.S.) to be free of defects in materials and workmanship. In event of such defect, product will be repaired promptly without charge or, at ouroption, replaced with a new product of equal or superior value if delivered to A.T.U.S. or an Authorized Service Center, prepaid, together with thesales slip or other proof of purchase date. Prior approval from A.T.U.S. is required for return.This warranty excludes defects due to normal wear,abuse, shipping damage, or failure to use product in accordance with the instructions. This warranty is void in the event of unauthorized repair ormodification, or removal or defacing of the product labeling.For return approval and shipping information,contact the Service Dept., Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224.Except to the extent precluded by applicable state law, A.T.U.S. will have no liability for any consequential, incidental, or special damages; anywarranty of merchantability or fitness for particular purpose expires when this warranty expires.This warranty gives you specific legal rights, and you may have other rights which vary from state to state.Outside the U.S.A., please contact your local dealer for warranty details.Visit our Web Site!www.audio-technica.com

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