audio-technica AT-ONE Series Wireless Systems Microphones User Manual
- October 27, 2023
- Audio-Technica
Table of Contents
audio-technica AT-ONE Series Wireless Systems Microphones
Installation and Operation
CAUTION
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Electrical shock can result from removal of the receiver cover. Refer servicing to qualified service personnel.
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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.
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Notice to individuals with implanted cardiac pacemakers or AICD devices:
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Any source of RF (Radio Frequency) energy may interfere with normal operation of the implanted device. All 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.
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However, since a body-pack transmitter typically is placed against the body,
we suggest attaching it to a belt rather than 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.
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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.
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Please note that wireless frequencies are shared with other radio services. If you need assistance with operation or frequency selection please contact your dealer or Audio-
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Technica. Extensive wireless information is also available at www.audio-technica.com
FCC Notice
WARNING : This device (DE3 band only) complies with Part 15 of the FCC
Rules. Operation is subject to the following two conditions: (1) This device
may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired
operation.
CAUTION : You are cautioned that any changes or modifications not expressly approved in this manual could void your authority to operate this equipment.
NOTE : This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected
- Consult the dealer or an experienced radio/TV technician for help.
Introduction
Thank you for purchasing this Audio-Technica product. This PLL synthesized
wireless microphone system operates in two different UHF band frequencies.
Please read this manual carefully before operating the AT-ONE system. This
manual covers the function and operation of the wireless microphone system.
Safety
- To prevent fire or shock hazard, do not expose this appliance to rain or moisture
- To prevent fire, do not cover the ventilation of the apparatus with newspaper, tablecloths, etc.
- Do not expose this apparatus to drips or splashes
- Do not place any objects filled with liquids, such as vases, on the apparatus
- Do not install this apparatus in a confined space such as a bookcase or similar unit
- The apparatus should be located close enough to the AC outlet so that you can easily grasp the AC adapter at any time. In case of emergency, disconnect the AC adapter quickly.
- Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type.
- If the transmitter is not in use for an extended period, remove the batteries to avoid damage
- Do not dispose of used batteries with domestic rubbish. Be sure to dispose of batteries in accordance with your local waste disposal rules.
- When disposing of the equipment, remove the batteries, separate the case, circuit boards and cables, and dispose of all components in accordance with local waste disposal rules.
The circuits inside the receiver and transmitter have been precisely adjusted for optimum performance and compliance with government regulations. Do not attempt to open the receiver or transmitter. To do so will void the warranty, and may cause improper operation.
Receiver Controls and Functions
Front Panel Controls and Functions
- Antenna: Detachable UHF antenna with BNC connector.
- Power Button: Press and hold to power on/off.
- RF Red LED: Displays the reception status of RF signal.
- Channel ID Display
- AF Red LED: Displays the reception status of AF signal.
- UP Channel Button: Press and hold until the channel ID number begins to blink. Then tap the button to select a new channel (+1 ch/tap). Release the button. When the channel ID number stops blinking, the new channel is set.
- DOWN Channel Button: Press and hold until the channel ID number begins to blink. Then tap the button to select a new channel (-1 ch/tap).Release the button. When the channel ID number stops blinking, the newchannel is set.
Rear Panel Controls and Functions
- Antenna BNC Receptacle: This provides a connection to the supplied antennas or to coaxial cable used with an antenna divider, antenna booster or remote antennas.
- Balanced XLR Audio Output Jack
- Unbalanced ¼” Output Jack
- Mic/Line Switch: Use this to adjust the audio output of the wireless microphone system for mic level (-20 dB) or line-level (0 dB).
- SQ (Squelch): Turn the squelch to the lowest possible setting (counterclockwise) to maximize the range of the system. In RF-crowded environments (other wireless microphones, LTE, etc.) it may be necessary to increase the squelch level (clockwise) to block out unwanted RF interference. Please note that this will reduce the operating distance of the system, so always seek the lowest possible setting.
- DC IN: DC input connector for the supplied AC adapter.
- Cable Strain
Transmitter Controls and Functions
Handheld Transmitter Controls and Functions
- Power/Mute Button
- Power/Mute/Battery Status LED: Indicates the power/mute/battery level status.
- Channel Selector: Change the channel setting from 11-14 or 21-24.
- Battery Compartment: Insert two AA batteries, making sure the polarity is correct.
Body-Pack Transmitter Controls and Functions
- Antenna
- Power/Mute Button
- Power/Mute/Battery Status LED: Indicates the power/mute/battery level status
- Input Connector: Locking 4-pin connector for use with Audio-Technica cW-style lavalier and headworn microphones, or cables.
- Channel Selector: Change the channel setting from 11-14 or 21-24
- Transmitter Gain Selector: Rotary control adjusts the sensitivity of the transmitter’s audio to the level of the connected mic or instrument.
- Pad Switch: Activate this switch to attenuate the signal by an additional 10 dB
- Battery Compartment: Insert two AA batteries, making sure the polarity is correct.
System Operation
System Setup
For best operation the receiver should be at least 1 m above the ground and at
least 1 m away from a wall or metal surface to minimize interference. The
transmitter should be at least 3 m from the receiver, as shown in the diagram
to the right. Keep antennas away from sources of RF interference
Connecting the Receiver
Plug the DC 12V 500 mA power supply into the power connector on the back of
the receiver. The power connector is supplied with interchangable US and EU
adaptors.
Connect the receiver output to an audio mixer or amplifier input, using a
standard audio cable with a 3-pin XLR or ¼” connector. Never use balanced and
unbalanced audio outputs at the same time, this may cause signal loss or
increased noise.
Set the attenuation for mic or line input. The two-position mic/line switch adjusts the audio output attenuation to 0 dB (line-level) or -20 dB (mic level). The factory setting is 0 dB.
Handheld Microphone/Body-Pack Transmitter Setup
Open the battery cover and insert AA batteries into the battery compartment,
making sure the polarity is correct.
Unscrew the bottom of the handheld mic and open the battery cover to insert AA
batteries into the battery compartment, making sure the polarity is correct.
Press and hold the power button on the handheld/body-pack transmitter for 4
seconds to turn on. If the LED remains flashing (either red or green) after 4
seconds, the battery is low on power.
Use a small standard screwdriver or similar object to adjust the frequency of
the transmitter to match the frequency of the receiver. Adjust the
transmitters to the same channel as the receiver. ‘1’ is equal to the first
frequency in Group 1. ‘2’ is equal to the first frequency in Group 2.*
Use the 0 dB/-10 dB switch to adjust the audio input level.
Turn off the transmitter when switching frequency to avoid pops
Squelch
The squelch function is used to minimize RF interference. If you experience RF
interference or cross talk between transmitters, increase the squelch level
until the interference is gone. Please note that increasing the squelch level
will decrease the operating range of the system. For maximum operating range,
make sure the squelch is turned to the lowest position.
Frequencies
Each AT-ONE system comes with Group 1 and Group 2 frequencies available as
shown in the tables below.
DE3:
482 – 492 MHz,
495 – 512 MHz
Group 1
Channel| MHz
11| 482.625
12| 486.825
13| 488.225
14| 491.550
Group 2
Channel| MHz
21| 495.775
22| 506.300
23| 507.700
24| 511.375
HH2:
824 – 831 MHz
863 – 865 MHz
Group 1
Channel| MHz
11| 863.300
12| 864.300
13| 824.875
14| 830.850
Group 2
Channel| MHz
21| 863.700
22| 864.700
23| 824.400
24| 828.650
The system has been designed in these groups to allow you to use up to four
channels in one group together, interference free (subject to national
licensing and regulations).
In an environment with two separated event areas (e.g., two separate
conference rooms) it is possible to use Group 1 in the first location and
Group 2 in the second location.
All frequency usage is subject to national regulations, please check with your
local government authority for usage restrictions.
Troubleshooting
No Sound
- Check the power supply of the transmitter and receiver.
- Check that the transmitter and receiver are tuned to the same frequency.
- Check that the receiver is correctly connected to the mixer or amplifier.
- Check whether the transmitter is too far from the receiver or the Squelch control is set too low.
- Check for obstructions between the transmitter and receiver
Sound Interference
- Check the location for RF interference.
- When using two or more sets simultaneously, make sure the chosen frequencies do not interefere with each other.
- Check whether the interference is coming from other wireless microphones, TV, radio, etc. being used in the area.
- When using two or more sets keep the distance between the receiver and the transmitter greater than 3 m and the distance between the two transmitters greater than 1 m to avoid cross talk interference.
Distortion
- Check whether the receiver volume level is set too high or too low.
- Check whether the distortion is coming from other wireless microphones,
- TV, radio, etc. being used in the area.
Rackmount Setup
To mount the receiver in a 19″ standard rack using the included rack kit,
attach the L-shaped brackets to the opposite end of the unit and mount in the
rack unit.
To connect two receivers in a 19″ standard rack using the optional AT8677 rack kit (sold separately), attach the short L-shaped brackets to the opposite end of each unit, and connect the units together using two metal connecting plates.
Specifications
| RF Output Power | 10 mW |
|---|
Spurious Emissions
| Following federal and national regulations
Frequency Range
| DE3: 482 – 492 MHz, 495 – 512 MHz HH2: 824 – 831 MHz, 863 – 865 MHz
---|---
Modulation Mode| FM
Number of Frequencies| 2 x 4 frequencies
Operating Range| 60 m, typical
Frequency Response| 60 HZ – 16 kHz
Frequency Stability
| +/- 0.005%, phase lock loop frequency control
Receiver Specifications
|
Receiver System| Antenna switching diversity
Image Rejection| 55 dB minimum
Dynamic Range
| HH: 108 dB BP: 103 dB (@ max deviation)
Sensitivity
| 10 dBµV (S/N 60 dB
@ 20 kHz deviation)
Total Harmonic Distortion| <1% – 20 kHz deviation @ 1 kHz
Level Control| Mic / Line (0/-20 dB)
Antenna Input
| BNC type, 50 ohms – BIAS voltage 12 V DC 100 mA each
Audio Output| Unbalanced -2 dBV, Balanced +4 dBV
Output Connectors
| Unbalanced: ¼” (6.3 mm) mono jack, Balanced: XLRM-type
Dimensions
| 200 mm (7.87″) W x 42 mm (1.65″) H x 122 mm (4.80″) D
Weight| 418 g (14.74 oz) without accessories
Accessories Included
| AC Adapter, Antennas, Rack-mount adapter, Protective carrying case
Optional System Accessory| AT8677 Dual rack mount kit
Batteries (not included)| Two 1.5 V AA alkaline
---|---
Battery Life
| 10 hours – depending on battery type and use pattern
Dimensions
| 66 mm (2.60″) W x 98 mm (3.86″) H x 22 mm (0.87″) D
Weight| 71 g (2.5 oz) without batteries
Handheld Transmitter
|
RF Output Power| 10 mW
Spurious Emissions
| Following federal and national regulations
Microphone Element| Cardioid condenser
Batteries (not included)| Two 1.5 V AA alkaline
Battery Life
| 10 hours – depending on battery type and use pattern
Dimensions
| 268 mm (10.55″) long,
52 mm (2.05″) diameter
Weight| 277 g (9.8 oz) without batteries
Accessories included| Stand clamp
Hereby, Audio-Technica Corp. declares that ATW-T1, ATW-T3 and ATW-R1 are in compliance with Directive 1999/5/EC. The full text of the EU declaration of conformity is available at the following internet address: eu.audio- technica.com/doc
References
- Declarations of Conformity | Audio-Technica
- Audio-Technica Corporation | Headphones, Microphones & Turntables