audio-technica ESW-T211 UHF UniPak Transmitter User Manual

audio-technica ESW-T211 UHF UniPak Transmitter

Product Information

• Specifications:
  • Product Name: ESW-T211 UHF UniPakTM Transmitter
  • Tone Squelch System: Tone LockTM
  • Compatibility: Engineered Sound transmitters and receivers
  • Power Source: Two 1.5V AA batteries (not included)
  • Battery Type: Alkaline recommended
  • Input Connection: Audio input connector

Product Usage Instructions

• Transmitter Setup:
  • Turn off the transmitter power switch before proceeding.
  • Slide down the battery latching cover and pull out the battery drawer.
  • Observe correct polarity and carefully insert two fresh 1.5V AA alkaline batteries into the battery compartment.
  • Ensure the batteries are fully seated in the compartment.
  • Carefully insert the battery drawer fully and slide the cover up to latch the drawer.
• Battery Condition Indicator:
  • After installing the batteries, turn on the power.
  • The red battery condition indicator LED on the user control panel should flash momentarily, and the green indicator should come on.
  • If this does not happen, check if the batteries are installed incorrectly or if they are dead.
  • If the yellow or red indicator stays on, replace the batteries immediately to ensure continued operation.
• Transmitter Input Connection:
  • Connect an audio input device (microphone or guitar cable) to the audio input connector located beside the user control panel.

FAQs

• Q: Can I open the receiver or transmitter to make adjustments?
  • A: No, opening the receiver or transmitter will void the warranty and may cause improper operation. Do not attempt to open them.
• Q: Can I use Engineered Sound transmitters and receivers with components from other Audio-Technica wireless systems or other manufacturers?
  • A: No, Engineered Sound transmitters and receivers should only be used together and not with components from other systems or manufacturers.
• Q: How many transmitter-receiver pairs do I need for multiple-system applications?
  • A: In multiple-system applications, you need a separate transmitter-receiver pair set to a separate frequency for each input desired. Only one transmitter can be used at a time for each receiver.
• Q: Are there any restrictions on the wireless frequencies used?
  • A: Yes, since the wireless frequencies are on UHF TV frequencies, only certain frequencies may be usable in a specific geographic area. Also, only certain operating frequencies can be used together. Refer to pages 10-11 for suggestions on multiple-system frequency grouping.

Notice to individuals with implanted cardiac pacemakers or AICD devices:

• Any source of RF (radio frequency) energy may interfere with the normal functioning of the implanted device.
• All wireless microphones have low-power transmitters (less than 0.05 watts output) which are unlikely to cause difficulty, especially if they are at least a few inches away.
• However, since a “body-pack” mic transmitter typically is placed against the body, we suggest attaching it to the belt, rather than in a shirt pocket where it may be immediately adjacent to the medical device.
• Note also that any medical device disruption will cease when the RF transmitting source is turned off.
• Please contact your physician or medical device provider if you have any questions, or experience any problems with the use of this or any other RF equipment.

CAUTION! The circuits inside the receiver and transmitter have been precisely adjusted for optimum performance and compliance with federal regulations. Do not attempt to open the receiver or transmitter. To do so will void the warranty, and may cause improper operation.

Introduction

• Audio-Technica Engineered Sound® wireless systems are offered as separate receiver and transmitter units, rather than in predetermined combinations, for the greatest system flexibility.
• Operating details for Engineered Sound receivers and overall system operation are included with each receiver.

Engineered Sound receivers feature a sophisticated

• Tone Lock™ tone squelch system that opens only when an Engineered Sound transmitter is detected, reducing the possibility of interference.
• As a result, Engineered Sound transmitters and receivers must be used together and should not be used with components from other Audio-Technica wireless systems, or with those of other manufacturers.
• Please note that in multiple-system applications there must be a transmitter-receiver pair set to a separate frequency for each input desired (only one transmitter at a time for each receiver).
• Because the wireless frequencies are on UHF TV frequencies, only certain wireless frequencies may be useable in a particular geographical area.
• Also, only certain of the available operating frequencies may be used together.
• (Suggestions for multiple-system frequency grouping will be found on pages 10-11.)

Transmitter Setup

Battery Selection and Installation

• The transmitter uses two 1.5V AA batteries, not included.
• Alkaline type is recommended. Always replace both batteries. Make certain the transmitter power switch is turned Off before replacing the batteries.

Battery Installation

1. Slide down the battery latching cover and pull out the battery drawer as shown in Figure A. (A screwdriver for adjusting operating frequency is stored on the back of the drawer.)
2. Observe correct polarity as marked inside the battery compartment and carefully insert two fresh 1.5V AA alkaline batteries. Because there is some variation in actual battery dimensions, make certain the batteries are fully seated in the battery compartment.
3. Carefully insert the battery drawer fully, but do not force the drawer in. Then slide the cover up to latch the drawer.

Battery Condition Indicator

• After the batteries are installed, turn the power on.
• The red battery condition indicator LED on the user control panel should flash momentarily and the green indicator should come on.
• If this does not happen, the batteries are installed incorrectly or they are dead.
• If the yellow or red indicator stays on, the battery voltage is low and the batteries should be replaced.
• If this happens during use, replace the batteries immediately to ensure continued operation.

Transmitter Input Connection

• Connect an audio input device (microphone or guitar cable) to the audio input connector beside the user control panel (Fig. B).
• Several Audio-Technica professional microphones and cables are available separately, pre-terminated with a UniPak™ input connector (see “Transmitter Accessories” on page 9).

Transmitter Controls (Refer to Fig. B, User Control Panel)

• POWER SWITCH: The Power switch controls the entire transmitter. Its handle is designed to be felt and activated easily even through clothing or other garments. There is about a half-second delay after the transmitter turns before the receiver’s Tone Lock squelch un-mutes.
• HIGH-PASS SWITCH: The ESW-T211 offers an audio high-pass switch that reduces low frequencies when desired. It affects only the microphone input and is recessed to avoid accidental activation. Use this switch to reduce the pickup of low-frequency noise caused by clothing and/or user movement.

(Refer to Fig. C, Setup Control Panel)

• INPUT TRIMMERS: These controls permit adjustment of Mic Level (MT) and Guitar Level (GT) to match a wide range of input devices, as described in the following section. The trimmer not in use should be set to a minimum.
• CHANNEL SWITCHES: The left channel selector switch corresponds to the receiver‘s left-column channel display number (tens); the right switch corresponds to the receiver‘s right-column channel display number (units). Always turn the transmitter off when changing frequencies.
• RF POWER / BATTERY-SAVE SWITCH: As supplied, the switch is set in the “Hi” position for maximum range. Switching to the “Lo” position increases battery life somewhat by reducing power. (Note: Effective range may decrease when the switch is set at the Lo position.)

Mounting Clips

• The ESW-T211 is supplied with two mounting clips for attachment to different types/shapes of objects.
• Attach the clips by springing their ends into the two holes on the sides of the transmitter case (Fig. D).
• The clips may be installed with the case positioned either “up” or “down,” depending upon which is preferred for the application.

Transmitter Antenna

The ESW-T211 features a field-replaceable antenna, in the unlikely event that it becomes damaged. Use only an original Audio-Technica replacement part, available from the Audio-Technica service department.

1. Referring to Figure E, fully unscrew only screw “A” and remove it. Do not remove the other case screw.
2. Pull the broken antenna straight out of the transmitter case, without twisting it.
3. Carefully insert the replacement antenna, without twisting it, and without damaging the PC board trace. Look in the open hole “A” to assure that the antenna is fully seated.
4. Reinstall screw “A,” tightening only until it is snug.

System Operation

Turn down the mixer/amplifier level before starting up the wireless system. Switch on the receiver. Do not switch on the transmitter yet.

• Receiver On…
  • The Channel Designator Display will light. If any of the RF LEDs light up at this point, there may be RF interference in the area. If this occurs, select another frequency using the front-panel channel selectors.
  • While holding the “Set” button, press the “Up” or “Down” button to access the desired frequency; then release the Set button to select the channel.
• Transmitter On…
  • Before turning on the transmitter, use the provided screwdriver to set the transmitter channel selector switches (Fig. C) to the same numbers as those displayed on the receiver.
  • Always turn the transmitter off when changing frequencies. When the transmitter is switched on and in normal operation, the receiver’s RF signal level indicators will light up from left to right.
  • For optimum performance at least four, and preferably five, of the signal strength indicators should light up when the transmitter is switched on.
  • One of the Tuner LEDs (A or B) also will light up when the transmitter is on, indicating that its signal has been received and the receiver’s Tone Lock squelch circuit has opened.
• Setting Levels
  • Although Engineered Sound receivers require no level adjustment, correct adjustment of transmitter audio input and mixer/amplifier input and output levels is important for optimum system performance.

Transmitter Input Levels

Input trimmer controls in the UniPak transmitter (Fig. C) will enable you to use microphones or instruments with different output levels.

1. Set both the transmitter Mic Level (MT) and Guitar Level (GT) controls to their full counter-clockwise position (minimum). (The level control not being used should always be set to minimum.)
2. Plug the mic or instrument into the transmitter and power up the system.
3. For MIC: Make an initial adjustment of the mixer’s level controls that will allow audio through the system as you increase the transmitter’s Mic Level.
   • For INSTRUMENT: Make an initial adjustment of the instrument amplifier input level control that will allow audio through the system as you increase the transmitter’s Guitar Level.
4. For MIC: While speaking/singing into the microphone at typically loud levels, turn up the transmitter’s Mic Level (MT) control until the maximum audio output of the mic lights about three or four green LED segments on the receiver’s AF Level indicator.
   • For INSTRUMENT: While playing the instrument at typically loud levels, turn up the transmitter’s GuitarLevel (GT) control until the maximum audio output of the instrument lights about three or four green LED segments on the receiver’s AF Level indicator.
   • NOTE: Do not set the transmitter level too high (as indicated by the lighting of the red LED) – doing so will cause the system to overload and distort.
5. For MIC: Next, while again speaking/singing into the microphone at typically-loud levels, adjust the mixer’s input trim control so the highest sound pressure level going into the microphone causes no input overload in the mixer, and yet permits the mixer’s channel and output level controls to operate in their “normal” range (not set too high or too low).
   • For INSTRUMENT: Next, while again playing the instrument at typically loud levels, adjust the amplifier’s input control so the highest signal level causes no overload in the instrument amplifier.
   • CAUTION! The small trimmer controls are delicate; use only a small screwdriver or alignment tool with a maximum 3/32″-wide blade. Do not force the trimmers beyond their normal 260° range of rotation.

RF Interference

• Please note that wireless frequencies are shared with other radio services. According to Federal
• Communications Commission regulations, “Wireless microphone operations are unprotected from interference from other licensed operations in the band. If any interference is received by any Government 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
• Audio-Technica Professional Division. Extensive wireless information also is available on the Audio-Technica Web site at www.audio-technica.com.

Tips To Obtain The Best Results

• Use only fresh alkaline batteries. Do not use “general purpose” (carbon-zinc) batteries.
• The transmitter and the receiver should be as close together as conveniently possible, but no closer together than three feet. Maintain line-of-sight between them whenever possible.
• Each transmitter/receiver pair must be set to the same channel number.
• A single receiver cannot receive signals from two transmitters at the same time.
• You need to change channels 1) when a strong interference signal is received, 2) when the channel breaks down, or 3) during multiple-system operation to select an interference-free channel.
• The “MT” or “GT” input control not in use should be set to a minimum.
• Turn the transmitter off when not in use. Remove the batteries if the transmitter is not to be used for some time.

Specifications

OVERALL SYSTEM

• Operating Frequency UHF band, 728.125 to 740.500 MHz
• Number of Channels 100 total
• Frequency Stability ±0.005%, Phase Lock Loop frequency control
• Modulation Mode FM
• Normal Deviation ±5 kHz
• Tone Squelch Frequency 32.768 kHz
• Operating Range 300′ typical
• Operating Temperature Range 41° F (5° C) to 113° F (45° C)
• Frequency Response 100 Hz to 15 kHz

ESW-T211 UNIPAK™ TRANSMITTER

• RF Power Output 50 mW Max (Hi: 10 mW; Lo: 5 mW, typical)
• Spurious Emissions under Federal regulations
• Input Connections High impedance, low impedance, bias
• Bias Voltage 5V, 5 mA Max
• High-pass (low-freq. roll-off) 150 Hz, 6 dB per octave (mic input only)
• Batteries Two 1.5V AA type alkaline, not included
• Current Consumption Hi: 130 mA; Lo: 120 mA, typical
• Battery Life Hi: 12 hours; Lo: 14 hours, typical (depending on battery type and use pattern)
• Dimensions 2.56″ (65.0 mm) W x 6.57″ (167.0 mm) H x 1.02″ (26.0 mm) D
• Net Weight (without batteries) 2.7 oz (75 grams)
• Accessory Included Alternate mounting clip

In the interest of standards development, A.T.U.S. offers full details on its test methods to other industry professionals on request.

Transmitter Accessories

(All are terminated for use with the ESW-T211 UniPak transmitter.)

• AT829cW AT829 miniature cardioid condenser microphone only. Includes clothing clip and windscreen.
• MT830cW MT830R subminiature omnidirectional condenser microphone only. Includes clothing clip and windscreen.
• MT830cW -TH ”Theater“ model, same as MT830cW except for beige color mic and cable for concealment.
• AT831cW AT831b miniature cardioid condenser microphone only. Includes clothing clip and windscreen.
• AT851cW AT851a surface-mount wide-range hemi-cardioid condenser microphone only.
• AT857AMLcW AT857AMLa 19″ gooseneck cardioid microphone only. Mounts to 5/8″-27 thread. Includes windscreen.
• AT889cW Headworn noise-canceling condenser microphone only. Includes windscreen and cable clip.
• ATM35cW ATM35 high-intensity miniature cardioid condenser microphone only. Includes AT8418 clip-on instrument mount.
• ATM73cW ATM73a headworn cardioid condenser microphone only.
• ATM75cW ATM75 headworn cardioid condenser microphone only. Includes windscreens and cable clip.
• PRO8HEcW PRO8HEx head-worn hyper-cardioid dynamic microphone. Includes windscreen and cable clip.
• PRO35xcW PRO35x cardioid condenser microphone only. 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.

Wireless Operating Frequencies

Engineered Sound ® UHF Wireless Operating Frequencies Frequency and Channel Designator List

Multi-channel Systems

Following are groupings of frequencies suggested for multi-channel wireless systems.

• Group A: Channels 00, 02, 08, 15, 46, 50, 60 (or 62), 71, 76, 80, 93, 99 -or –
• Group B: Channels 01, 03, 07, 25, 30, 41, 44, 56, 69, 76, 77, 86

For use where TV Channel 57 is operating:

• Channels 50, 60 (or 62), 71, 76, 80, 93, 99 (from Group A) -or –
• Channels 56, 69, 76, 77, 86 (from Group B)

For use where TV Channel 58 is operating:

• Channels 00, 02, 08, 15, 46, 99 (from Group A) -or –
• Channels 01, 03, 07, 25, 30, 41, 44 (from Group B)

For use where TV Channel 59 is operating:

• Channels 00, 02, 08, 15, 46, 50, 60 (or 62), 71, 76, 80, 93 (from Group A) -or –
• Channels 01, 03, 07, 25, 30, 41, 44, 56, 69, 76, 77, 86 (All of Group B)

For future reference, please record your system information here (the serial number appears inside the battery compartment):

• Transmitter ESW-T211
• Serial Number

One-Year Limited Warranty

• Audio-Technica professional wireless systems purchased in the U.S.A. are warranted for one year from the date of purchase by Audio-Technica
• U.S., Inc. (A.T.U.S.) to be free of defects in materials and workmanship.
• In the event of such defect, the 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 the product following 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 a 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.

CONTACT

• Audio-Technica U.S., Inc., 1221 Commerce Drive,
• Stow, Ohio 44224 330/686-2600
• www.audio-technica.com.
• P#2323-02490 P51249-B/W ©2000 Audio-Technica U.S., Inc.
• Printed in Japan

References

• Audio-Technica Corporation | Headphones, Microphones & Turntables | Audio-Technica
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