2000 Series Professional UHF Wireless Systems ATW-2110 UniPak™ Transmitter System ATW-2120 Handheld Dynamic Microphone System Installation and Operation Professional UHF Wireless Systems Installation and Operation This device complies with part 15 of the FCC Rules. The ATW-R2100 receiver features true diversity reception. Two Operation is subject to the condition that this device does antennas feed two completely independent RF sections on not cause harmful interference. the same frequency; automatic logic circuitry continuously compares and selects the superior received signal, providing This device complies with INDUSTRY CANADA R.S.S. 210, better sound quality and reducing the possibility of interference en conformité avec IC: RSS-210/CNR210. Operation and dropouts. Soft-touch controls provide convenient access is subject to the following conditions: 1) This device may to selection of operating frequency and automatic scanning, not cause harmful interference and 2) this device must while an LCD information display provides constant monitoring accept any interference received, including interference of system operation. The receiver is half-width for a standard which may cause undesired operation. 1U 19" rack mount; rack-mount adapters are included. Two receivers can be mounted side by side, using an optional AT8630 joining-plate kit. CAUTION!Electrical shock can result from removal of the The versatile ATW-T210 UniPak™ body-pack transmitter has receiver cover. Refer servicing to qualified service personnel. both low- and high-impedance inputs plus a bias connection, No user-serviceable parts inside. Do not expose to rain or for use with dynamic and electret condenser microphones, moisture. as well as Hi-Z instrument pickups. The circuits inside the receiver and transmitter have been The ATW-T220 handheld dynamic microphone/transmitter precisely adjusted for optimum performance and compli- features the same element used in the PRO 41 dynamic ance with federal regulations. Do not attempt to open the handheld microphone created for professional live-sound receiver or transmitter. To do so will void the warranty, venues. and may cause improper operation. Transmitters in the 2000 Series use two 1.5V AA batteries for Notice to individuals with implanted cardiac pacemakers economical operation and wide availability. Both transmitters have battery condition indicators. or AICD devices: Any source of RF (radio frequency) energy may interfere with 2000 Series receivers feature a sophisticated Tone Lock™ normal functioning of the implanted device. All wireless tone squelch system that opens the receiver’s audio output microphones have low-power transmitters (less than 0.05 only when a 2000 Series transmitter is detected, reducing the possibility of interference. As a result, 2000 Series transmitters watts output) which are unlikely to cause difficulty, especial- and receivers must be used together and should not be used ly if they are at least a few inches away. However, since a with components from other Audio-Technica wireless systems, “body-pack” mic transmitter typically is placed against the or with those of other manufacturers. body, we suggest attaching it at the belt, rather than in a shirt Please note that in multiple-system applications there must be pocket where it may be immediately adjacent to the medical a transmitter-receiver combination set to a separate channel device. Note also that any medical-device disruption will (frequency) for each input desired (only one transmitter for cease when the RF transmitting source is turned off. Please each receiver). contact your physician or medical-device provider if you have any questions, or experience any problems with the use of Because the wireless frequencies are within UHF TV frequency this or any other RF equipment. bands, only certain channels (operating frequencies) may be useable in a particular geographic area. The 10 channels (operating frequencies) that are used in the 2000 Series have Introduction been selected for multi-channel compatibility. Subject to Thank you for choosing an Audio-Technica professional wireless frequency availability in a particular geographic area, any of system. You have joined thousands of other satisfied customers these 10 channels may be used together. who have chosen our products because of their quality, The operating frequencies that correspond to each of the 10 performance and reliability. This Audio-Technica wireless channels are listed on page 11. microphone system is the successful result of years of design and manufacturing experience. Each 2000 Series wireless system provides a choice of 10 PLL- synthesized UHF frequencies in the 656-678 MHz band (TV channels 45-48). Each wireless system includes a receiver and either a body-pack or handheld transmitter. Individual components are also available separately. 2 Receiver Installation Location Antennas For best operation the receiver should be at least 3 ft. (1 m) Attach the included pair of UHF antennas to the antenna input above the ground and at least 3 ft. away from a wall or metal jacks. The antennas are normally positioned in the shape of a surface to minimize reflections. The transmitter should be at “V” (both 45° from vertical) for best reception. least 3 ft. from the receiver, as shown in Figure A. Keep Accessory antennas can be remotely located from the receiver. antennas away from noise sources such as digital equipment, However, due to signal loss in cables at UHF frequencies, use motors, automobiles and neon lights, as well as away from the lowest-loss RF cables practical for any cable runs over 25 large metal objects. feet. RG8-type is a good choice. Use only copper-shielded Output Connections cable, not CATV-type foil-shielded wire. Audio-Technica offers There are two audio outputs on the back panel: balanced quality RF cables in four lengths, as well as remote antennas; (12.5 mV) and unbalanced (25 mV). Use shielded audio cable see the Optional System Accessories section on page 10. for the connection between the receiver and the mixer. If the Power Connections 1 4 1 4 input of the mixer is a / " jack, connect a cable from the / " Connect the included AC adapter to the DC power input on the unbalanced audio output on the back of the receiver housing back of the receiver. Loop the small cord from the DC plug over to the mixer. If the input of the mixer is an XLR-type input, the cord hook above the jack, to keep the plug from being connect a cable from the balanced XLR-type audio output on detached by an accidental tug on the cord. Then plug the the back panel to the mixer. The two isolated audio outputs adapter into a standard 120 Volt 60 Hz AC power outlet. permit simultaneous feeds to both unbalanced and balanced Operation of the receiver is controlled by the front-panel Power inputs. For example, both a guitar amp and a mixer can be switch. driven by the receiver. Figure A (Note: Units supplied to countries with 230V mains should include an in-line AC adapter appropriate for that country. Use the included adapter only with 120V 60 Hz AC power sources.) 3 Receiver Controls and Functions Figure B-Front Panel Controls and Functions UP SET/SCAN POWER ON OFF DOWN UHF SYNTHESIZED DIVERSITY RECEIVER ATW-R2100 5 1 2 3 4 5 1. POWER SWITCH: Press the Power switch in to turn the Figure C-Receiver LCD Window Display receiver on. The LCD window will light, and the operating channel number will be displayed in the window. To turn the receiver off, press the Power switch again. 2. LCD WINDOW: Liquid Crystal Display indicates channel setting and operational readings. See Fig. C for examples. 3. UP/DOWN BUTTONS: Press Up or Down arrow buttons to arrive at desired channel. The selected number will flash on and off. Press and hold Set/Scan button to set the channel 6 7 8 9 (operating frequency). 4. SET/SCAN BUTTON: Two distinct operations are associated 6. RF SIGNAL LEVEL INDICATOR: Shows the strength of the with this button: RF signal received from the transmitter. Touch: A momentary press of the Set/Scan button. Hold: A press and hold (about two seconds) of the 7. TUNER OPERATION INDICATOR: Indicates which Tuner Set/Scan button. (A or B) has the better reception and is in operation. The Set/Scan button can be used in two ways: Manual Set 8. CHANNELDISPLAY: Shows which channel is selected. Mode, to permit selection of an operating channel; and 9. AF LEVEL INDICATOR: Shows the audio modulation level Automatic Scan/Set Mode, to initiate the automatic channel of the received signal. scan and selection, as follows: Manual Set Mode: After using the Up or Down arrow button to arrive at desired channel, hold the Set/Scan button to set the channel. NOTE: Before the channel has been set, a touch of the Set/Scan button will revert the channel to its previous setting. Automatic Scan/Set Mode: Hold the Set/Scan button. The Automatic Scan/Set Mode will automatically scan for and set the next open channel. 5. MOUNTING ADAPTERS: For mounting the receiver in any standard 19" rack. Attach adapters to the receiver with the screws supplied and remove the four receiver feet. (Use optional AT8630 joining-plate kit to mount two ATW-R2100 receivers side-by-side.) 4 Receiver Controls and Functions (Continued) Figure D-Rear Panel Controls and Functions 13 18 AF LEVEL ANT. B MIN MAX ANT. A SQUELCH GROUND AF OUT AF OUT 12~18V DC GROUND LIFT BALANCED UNBALANCED 500 mA 10 11 12 14 15 16 17 10. ANTENNA INPUT JACK: BNC-type antenna connector for 15. BALANCED AUDIO OUTPUT JACK: XLRM-type connector. Tuner “B.” Attach the antenna directly, or extend it with a A standard 2-conductor shielded cable can be used to low-loss antenna cable. See the “Antennas” section on connect the receiver output to a balanced microphone-level page 3 for more details. input on a mixer or integrated amplifier. 11. SQUELCH CONTROL: Adjusts level of noise-muting circuit 1 4 16. UNBALANCED AUDIO OUTPUT JACK: /" phone jack. Can (preset at factory but can be adjusted as circumstances be connected to an unbalanced aux-level input of a mixer, warrant). Factory setting is full counterclockwise. guitar amp or tape recorder. 12. ANTENNA INPUT JACK: Input for Tuner “A.” Attach the 17. POWER INPUT JACK: Connect the DC plug from the supplied antenna directly, or extend it to an accessory included in-line AC adapter. antenna with a low-loss antenna cable. 18. CORD HOOK: Loop the small DC cord around the cord 13. AF LEVEL CONTROL: Adjusts audio output level of both AF hook to keep the DC plug from pulling out accidentally. output jacks; maximum output is fully clockwise. 14. GROUND LIFT SWITCH: Disconnects the ground pin of the balanced output jack (15) from ground. Normally, the switch should be to the left (ground connected). If hum caused by a ground loop occurs, slide switch to the right (ground lifted). 5 Transmitter Controls And Functions Battery Selection Handheld Transmitter Battery Installation Two 1.5V AA alkaline batteries are recommended. 1. While holding the upper part of the transmitter body by the UniPak™ Transmitter Battery Installation translucant ring below the ball-screen, unscrew the lower body cover, slide it downward, and remove it to expose the 1. Open the transmitter door by pressing gently on the battery compartment. side-cover indentations and pulling back the hinged cover shown in Fig. E below. 2. Observe correct polarity as marked inside the battery compartment and carefully insert two fresh 1.5V AA 2. Lift the battery-keeper arm, and carefully insert two fresh alkaline batteries. Insert the first battery and slide it down. 1.5V AA alkaline batteries, observing correct polarity as Then insert the second battery into the space remaining. marked inside the battery compartment. Make certain the batteries are fully seated in the battery 3. Close the battery-keeper arm. compartment. (Fig. F) 4. Close the transmitter door. 3. Slide the lower body cover back up the body, then screw the housing together. Do not overtighten. Figure E-UniPak Transmitter Open Note: Remove batteries from the handheld transmitter starting at the bottom end, where finger indents in the battery housing are provided for easy grip. Figure F-Handheld Transmitter Battery Compartment Antenna Screwdriver Power-on LED Audio Input Jack Battery Indicator After the battery is installed, turn on the power switch (located on the bottom of the handheld transmitter and on the top of the CH LEVEL Instrument/Microphone Channel 1 INST MIC UniPak transmitter). The battery indicator LED (Fig. G/H) should Selector 9 3 Level Trim Controls Switch 7 5 MAX MAX turn red. If it does not, the batteries are installed incorrectly or they are dead. Figure G-UniPak Figure H-Handheld Transmitter Top View Transmitter Bottom Battery Indicator View Battery Indicator Battery-keeper Arm (open); POWER Screwdriver on OFF ON opposite side Transmitter Door BATT. OFF ON POWER ATW-T220 Input Connector Antenna Power Switch Power Switch UniPak Transmitter Input Connection Connect an audio input device (microphone or guitar cable) to the audio input connector on the top of the transmitter. A number of Audio-Technica professional microphones and cables are available separately, pre-terminated with a UniPak input connector (see “Optional System Accessories” on page 10). UniPak Transmitter Antenna The ATW-T210 UHF transmitter includes one field-replaceable antenna mounted on the transmitter. The antenna simply screws into the transmitter’s antenna fitting. Check the installed antenna occasionally to make certain it is snugly attached (only finger-tight). If the received signal is marginal, experiment with different transmitter positions on your body or instrument or try repositioning the receiver. Do not attempt to modify the transmitting antenna. Replace it only with the same parts, 6 available from the Audio-Technica Service Department. System Operation Switch on the receiver. Do not switch on the transmitter yet. Setting Levels Receiver On… Correct adjustment of transmitter audio input, receiver audio The LCD display will light up and one of the tuner operation output, and mixer/amplifier input and output levels is important indicator LCD segments (A or B) will light, even though the for optimum system performance. transmitter is not on. If two or more of the RF LCD segments ATW-T220 Handheld Transmitter light up at this point, there may be RF interference in the area. The 2000 Series handheld transmitter has factory pre-set audio If this occurs, change operating channels (select another input levels. Factory setting is full clockwise, maximum gain. frequency). While speaking/singing into the microphone at typically loud How to Make Operating Channel Changes levels, check the AF meter levels on the receiver. If all five AF Operating channel changes (frequency changes) may be made meter bars are consistently illuminated and distortion is heard in two ways: manually and automatically. through the system, it may be necessary to adjust the To change channel manually transmitter audio input level. 1. Use the Up/Down arrow buttons to reach the desired To adjust the transmitter audio input level, unscrew the lower channel number. body cover and slide it downwards, exposing the screwdriver and level trim control (Fig I). Remove the screwdriver and gently 2 Hold the Set/Scan button until the channel number stops turn the level trim control counterclockwise until the topmost flashing to set the receiver to the channel indicated. receiver AF level meter bar is illuminated only on audio peaks. NOTE: Before the channel has been set, a touch (momentary press) of the Set/Scan (rather than a hold) will Return the screwdriver to its clip and close and secure the lower revert the channel to its previous setting. body. No further transmitter gain adjustments should be needed, as long as the acoustic input does not change To change channel automatically significantly. 1. Hold the Set/Scan button. The Automatic Scan/Set Mode CAUTION! The small trimmer controls are delicate; use only will automatically scan for and set the next open channel. the supplied screwdriver. Do not force the trimmers beyond LCD screen will flash “FS” four times to indicate start of their normal 180° range of rotation. scan. Transmitter On… Return the screwdriver to its storage clip when not in use. Before turning on the transmitter, use the provided screwdriver Figure I-Handheld Transmitter Interior View to set the transmitter channel selector switches (Fig. E/I) to the same numbers as those displayed on the receiver. Always turn Level Trim Control the transmitter off when changing channels (frequencies). The transmitters have a two-position, on-off power switch. MAX 3 When the switch is “On,” the transmitter produces both RF 5 1 LEVEL 7 9 and audio. CH There is about a half-second delay after the transmitter is switched to the “On” position before the receiver’s Tone Lock Channel squelch un-mutes the receiver. Selector Switch When the transmitter is switched on and in normal operation, the receiver’s RF signal level indicators will display as dark segments (signal strength indicators) from bottom to top at the Screwdriver left side of the LCD display. 7 System Operation (Continued) Setting Levels (Continued) Figure E-UniPak Transmitter Open ATW-T210 UniPak™ Transmitter Trimmer adjustments in the UniPak™ transmitter (Fig. E) will enable you to use microphones or instruments with different output levels. Antenna 1. For MIC: Set microphone level trim control fully clockwise (maximum) and instrument level trim control fully counterclockwise (minimum). Power-on LED For INSTRUMENT: Set instrument level trim control fully clockwise (maximum) and microphone level trim control fully counterclockwise (minimum). 2. Set the receiver’s AF Level control to its full clockwise Audio Input Jack position (maximum). See Figure D on page 5. 3. Plug the mic or instrument into the transmitter and power up the system. CH LEVEL Instrument/Microphone Channel 1 INST MIC Selector 9 3 Level Trim Controls 4. For MIC: Make an initial adjustment of the mixer’s level 7 5 MAX MAX controls that will allow audio through the system. For INSTRUMENT: Make an initial adjustment of the instrument amplifier input level control that will allow audio through the system. 5. For MIC: While speaking/singing into the microphone at typically loud levels, check the AF meter levels on the Battery-keeper receiver. If all five meter bars are consistently illuminated Arm (open); and distortion is heard through the system, it may be Screwdriver on opposite side Transmitter necessary to adjust the UniPak transmitter audio input level. Door To adjust the transmitter audio input level, gently turn the microphone level trim control counterclockwise until the topmost receiver AF level meter bar is illuminated only on audio peaks. Receiver Squelch For INSTRUMENT: While playing the instrument at typically The squelch control on the back panel of the receiver is preset loud levels, check the AF meter levels on the receiver. If all at the factory for best system performance (factory setting is five meter bars are consistently illuminated and distortion is full counterclockwise), but can be adjusted if you must use the heard through the system, it may be necessary to adjust system in an area with considerable RF interference. If there is the UniPak transmitter audio input level. To adjust the interference in the audio, and changing the channel is not an transmitter audio input level, gently turn the instrument option, adjust the squelch control so the system will receive the level trim control counterclockwise until the topmost signal from your transmitter but will “squelch” or eliminate the receiver AF level meter bar is illuminated only on audio unwanted background RF noise. This adjustment can cause a peaks. reduction in useable range of the wireless transmitter, so set 6. For MIC: While again speaking/singing into the microphone the control to the lowest position that reliably mutes the at typically loud levels, adjust the mixer’s input trim control unwanted RF signals. so the highest sound pressure level going into the micro- RF Interference phone causes no input overload in the mixer, and yet Please note that wireless frequencies are shared with other permits the mixer’s channel and output level controls to radio services. According to Federal Communications operate in their “normal” range (not set too high or too Commission regulations, “Wireless microphone operations are low). unprotected from interference from other licensed operations in For INSTRUMENT: While again playing the instrument at the band. If any interference is received by any Government or typically loud levels, adjust the receiver’s AF Level control non Government operation, the wireless microphone must so the highest signal level causes no input overload in the cease operation...” If you need assistance with operation or instrument amplifier and yet permits the amplifier’s input frequency selection, please contact your dealer or level controls to operate in their “normal” range (not set Audio-Technica. Extensive wireless information also is available too high or too low). on the Audio-Technica Web site at www.audio-technica.com. Note: If the mixer cannot be adjusted to operate in its normal range without distortion, adjust the receiver’s AF Level Control (turn counterclockwise) until the mixer/ amplifier is no longer overloaded. 8 † Specifications ™ UNIPAK TRANSMITTER OVERALL SYSTEM Operating Frequency UHF band, 656.125 to 678.500 MHz RF Power Output 12 mW Number of Channels 10 total Spurious Emissions Under federal regulations Frequency Stability ±0.005%, Phase Lock Loop frequency Input Connections High impedance, low impedance, bias control Batteries (not included) Two 1.5V AA alkaline Modulation Mode FM Current Consumption 150 mA typical Normal Deviation ±5 kHz Battery Life Approximately 9 hours (depending on Operating Range 300' typical battery type and use pattern) Operating Temperature Range 41° F (5° C) to 113° F (45° C) Dimensions 2.60" (66.0 mm) W x 3.63" (92.3 mm) H Frequency Response 100 Hz to 15 kHz x 0.89" (22.5 mm) D Net Weight (without batteries) 2.82 oz (80 g) RECEIVER Receiving System Dual independent receivers, automatic- HANDHELD TRANSMITTERS switching diversity RF Power Output 12 mW Image Rejection 55 dB nominal, 50 dB minimum Spurious Emissions Under federal regulations Signal-to-noise Ratio >100 dB at 40 kHz deviation Microphone Element Dynamic, unidirectional (A-weighted), maximum modulation Batteries (not included) Two 1.5V AA alkaline 40 kHz Current Consumption 150 mA typical Total Harmonic Distortion <1% (±10 kHz deviation at 1 kHz) Battery Life Approximately 9 hours (depending Sensitivity 20 dBµV (S/N 60 dB at 5 kHz deviation, on battery type and use pattern) IEC-weighted) Dimensions 9.02" (229.0 mm) long x 2.11" (53.5 mm) Intermediate Frequency 65.75 MHz, 10.7 MHz maximum diameter Audio Output (AF Level set at “0”) Net Weight (without batteries) 7.81 oz (221.5 g) Unbalanced: 25 mV (at 1 kHz, ±5 kHz deviation, ™ 100k ohm load) Accessory Included AT8456a Quiet-Flex stand clamp Balanced: 12.5 mV (at 1 kHz, ±5 kHz deviation, 100k ohm load) † In the interest of standards development, A.T.U.S. offers full details on its test methods to Output Connectors other industry professionals on request. Specifications are subject to change without notice. 1 4 Unbalanced: / " phone jack Balanced: XLRM-type 350 mA, Power Supply 120V AC 60 Hz, or 12-18V DC, with external supply Dimensions 8.27" (210.0 mm) W x 1.73" (44.0 mm) H x 6.39" (162.2 mm) D Weight 2.2 lbs (1.0 kgs) Accessories Included Two flexible UHF antennas, rack-mount adapters, AC adapter 9 Optional System Accessories WIRELESS ESSENTIALS™ MICROPHONES AND CABLES RECEIVER ACCESSORIES AT829cW Miniature cardioid condenser lavalier microphone. AEW-DA660D UHF (655-680 MHz) active unity-gain antenna distribution Includes clothing clip and windscreen. system provides two “1-in, 4-out” RF channels; connects a MT830cW Miniature omnidirectional condenser lavalier pair of antennas to as many as four diversity receivers; microphone. Includes clothing clip and windscreen. cascade output provided as a directional coupler. AC MT830cW-TH “Theater” model, same as MT830cW except beige color pass-through allows daisy-chain AC hookup. Defeatable mic and cable for concealment. antenna power. Metal receiver chassis with reinforced AT831cW Miniature cardioid condenser lavalier microphone. mounting ears and rear rack mount capability. Includes Includes clothing clip and windscreen. detachable IEC power cable, IEC pass-through cable, ten RF cables, front-mount antenna cables and connectors, four DC AT889cW Headworn noise-canceling condenser microphone. power cables to power up to four 2000 Series receivers. Includes windscreen and cable clip. Mounts in a single 19" rack space. AT898cW Subminiature cardioid condenser lavalier microphone. AT8630 Joining-plate kit allows rack-mounting two ATW-R2100 Includes clothing clip base, viper clip base, magnet clip receivers side-by-side in a single (1U) 19" rack space. base,three single mic holders, two double mic holders and 5 ATW-A20 Pair of UHF ground-plane antennas with 8 two windscreens. / "-27 thread for AT899cW Subminiature omnidirectional condenser lavalier microphone. mounting to microphone stands, etc. For use with Includes AT899AK accessory kit. ATW-R2100 receivers. Takes RF cables with BNC connectors, not included; see RF Cables below. AT899cW-TH “Theater” model, same as AT899cW except beige color mic ATW-A49 Pair of UHF wide-band directional LPDA (log periodic dipole and cable concealment. Includes AT899AK-TH accessory kit. array) antennas provide enhanced signal pickup for UHF ATM35cW Cardioid condenser instrument microphone. wireless systems throughout a wide band range Includes AT8418 clip-on instrument mount. (440-900 MHz). Each antenna paddle is matched to 50 ohms ATM73cW Headworn cardioid condenser microphone. impedance with intergral high-quality low-loss BNC connector; Includes windscreen. 6 dB gain. For permanent or temporary installation; mounts 5 8 ATM75cW Headworn cardioid condenser microphone. to / "-27 threads. Includes windscreen. ATW-RA1 Rack-mount antenna kit brings antenna inputs to the front of PRO8HEcW Headworn hypercardioid dynamic microphone. receiver for ease of setup, or when receiver is enclosed in a Includes windscreen and cable clip. metal rack. Includes a pair of extendible antennas. NOTE: PRO35xcW Cardioid condenser instrument microphone. Two adapter kits are required when mounting two receivers Includes AT8418 clip-on instrument mount. side-by-side in a single 19" rack space. 1 RF Cables Low-loss design, 50 ohm impedance, with BNC-to-BNC 4 AT-GCW Hi-Z instrument/guitar cable with / " phone plug. connectors: XLRW Connecting cable for UniPak transmitter with an XLRF-type AC12 RG58-type cable (12') input connector, for Lo-Z microphones with XLRM-type AC25 RG8-type cable (25') output terminations. AC50 RG8-type cable (50') AC100 RG8-type cable (100') TRANSMITTER ACCESSORIES AT8114 Foam windscreen for handheld transmitter. AT8141 Water-resistant pouch for UniPak transmitter. 5 8 AT8456a Quiet-Flex™ stand clamp for handheld transmitter, / "-27 threads. 10 2000 Series Frequency Channel Plan Channel Frequency - MHz TV Channel 1 656.125 45 2 659.375 3 660.000 4 662.125 46 5 665.125 6 669.750 47 7 671.500 8 677.000 48 9 678.125 10 678.500 Note: All frequencies selected to avoid standard analog TV carrier interference. Ten Tips to Obtain the Best Results 1. Use only fresh alkaline batteries. Do not use “general 7. If the AF Level control of the receiver is set too high, it purpose” (carbon-zinc) batteries. may over-drive the input of the mixer or clip the output of the receiver, causing distortion. Conversely, if the receiver 2. Position the receiver so that it has the fewest possible output is set too low, the overall signal-to-noise ratio of obstructions between it and the normal location of the the system may be reduced. Please see Setting Levels transmitter. Line-of-sight is best. section, pages 7 and 8. 3. The transmitter and the receiver should be as close 8. You need to change channels when a strong interference together as conveniently possible, but no closer than signal is received (a strong RF signal is shown with the three feet (1 m). transmitter off). 4. The receiver antennas should be in the open and away 9. In the UniPak transmitter, the microphone level trim or from any metal. If mounted in a rack, have the unit on instrument level trim input control not in use should be top, or use an ATW-RA1 kit to front-mount the antennas. set to minimum. 5. The transmitter and receiver must be set to the same 10. Turn the transmitter off when not in use. Remove the channel number. battery if the transmitter is not to be used for a period of 6. A receiver cannot receive signals from two transmitters time. at the same time. For future reference, please record your system information here. Receiver ATW-R2100 S/N Serial Number appears on the FCC label on the back of the receiver. UniPak™ Body-Pack ATW-T210 S/N Transmitter Serial Number appears on the FCC label on the back of the transmitter. Handheld Dynamic ATW-T220 S/N Microphone Transmitter Serial Number appears on the FCC label on the interior of the transmitter. 11 One-Year Limited Warranty Audio-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 our option, 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 the sales 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 or modification, 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; any warranty 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 Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224 330/686-2600 www.audio-technica.com P#2323-03250 P51719 ©2004 Audio-Technica U.S., Inc. Printed in Malaysia