AT-One - Hi-Fi Audio-Technica - Free user manual and instructions

Product Type	UHF Wireless Microphone System
Brand	Audio-Technica
Model	AT-One
Frequency Range	824 - 831 MHz, 863 - 865 MHz
Modulation Mode	FM
Number of Frequencies	2 groups × 4 frequencies
Operating Range	60 m (typical)
Frequency Response	60 Hz – 16 kHz
Frequency Stability	±0.005% (PLL)
Receiver System	Antenna switching diversity
Image Rejection	55 dB (minimum)
Dynamic Range	Handheld: 108 dB, Bodypack: 103 dB
Sensitivity	10 dBμV (S/N 60 dB @ 20 kHz deviation)
Total Harmonic Distortion	<1% @ 20 kHz deviation @ 1 kHz
Audio Output Level Control	Mic/Line (0 dB / -20 dB)
Antenna Input	BNC, 50 ohms, bias 12V DC 100 mA each
Audio Output	Unbalanced -2 dBV, Balanced +4 dBV
Output Connectors	Unbalanced 6.3 mm mono jack, Balanced XLRM-type
Receiver Dimensions (W×H×D)	200 mm × 42 mm × 122 mm
Receiver Weight (without accessories)	418 g
Bodypack Transmitter Dimensions (W×H×D)	66 mm × 98 mm × 22 mm
Bodypack Transmitter Weight (without batteries)	71 g
Handheld Transmitter Dimensions	268 mm length × 52 mm diameter
Handheld Transmitter Weight (without batteries)	277 g
Microphone Element (Handheld)	Cardioid Condenser
RF Output Power	10 mW
Battery Type (per transmitter)	Two 1.5 V AA alkaline
Battery Life	Up to 10 hours (depending on battery type and use)
Power Supply (Receiver)	DC 12V 800 mA (included AC adapter)
Accessories Included	AC adapter, antennas, rack mount adapter, stand clamp (handheld)
Optional Accessory	AT8677 Dual rack mount kit
Safety	Do not expose to rain/moisture; do not remove covers; use only specified batteries
Cleaning	Use a dry cloth; do not use solvents
Repair	Refer servicing to qualified personnel; do not open
Compliance	Directive 1999/5/EC; compliant in EU countries listed

Frequently Asked Questions - AT-One Audio-Technica

How do I set up the AT-One wireless microphone system?

Place the receiver at least 1 m above ground and away from walls. Connect the power supply and audio cables. Insert batteries into the transmitter, power it on, and ensure both devices are on the same frequency channel.

What should I do if there is no sound?

Check that both transmitter and receiver are powered on and tuned to the same frequency. Verify the receiver is properly connected to the mixer/amplifier. Ensure the transmitter is within range (max 60 m) and the squelch is not set too high.

How do I change the frequency on the transmitter?

Use the included key to adjust the channel selector on the transmitter (channels 11-14 for Group 1 or 21-24 for Group 2). Set the receiver to the corresponding channel using the UP/DOWN buttons.

What type of batteries does the transmitter use?

Each transmitter (handheld or bodypack) uses two 1.5 V AA alkaline batteries. Battery life is up to 10 hours depending on usage.

How do I adjust the squelch setting?

Turn the SQ control on the receiver rear panel. Start with the lowest setting (counterclockwise) and increase only if interference occurs. Higher squelch reduces operating range.

Can I use multiple AT-One systems together?

Yes, up to four channels from the same group can be used simultaneously without interference. For two separate areas, use Group 1 in one and Group 2 in the other.

What is the operating range of the system?

The typical operating range is 60 meters in open air. Range can be reduced by obstacles, interference, or high squelch settings.

How do I clean and maintain the system?

Keep antennas clean and free of obstructions. Use a dry cloth to clean the exterior. Do not use solvents or expose to liquids. Remove batteries if not in use for extended periods.

What should I do if the transmitter LED flashes red?

A red flashing LED indicates the battery is low. Replace both AA batteries with new ones. If the LED flashes red and the unit is muted, it still indicates low battery.

Is the system compatible with other Audio-Technica wireless products?

The AT-One operates on specific UHF frequencies (824-831 MHz and 863-865 MHz). Compatibility with other systems depends on frequency matching. It is designed as a standalone system with pre-set groups.

USER MANUAL AT-One Audio-Technica

UHF Wireless Microphone System Installation and Operation

Contents

Introduction

• Introduction
• Safety

System Functions

• Receiver Functions
• Handheld Transmitter Functions
• Bodypack Transmitter Functions
• Battery Status

System Operation

• System Setup
• Receiver Operation
• Transmitter Operation
• Squelch
• Frequencies
• Troubleshooting

- Rack Mount Setup 11

Specifications

• Overall Specification 12
• Receiver Specification 12
• Bodypack Transmitter Specification 13
• Handheld Transmitter Specification 13

Compliance

• WEEE Regulations
• Declaration of Compliance 15

Introduction

Introduction

Thank you for purchasing this Audio-Technica product. This PLL synthesized wireless microphone system operates in the UHF band frequency, with two groups of four 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 Functions

Receiver Front:

1. Antenna: Detachable UHF antenna with BNC connector
2. Power Button
3. RF Red LED: Displays the reception status of the RF signal
4. AF Green LED: Displays the reception status of the AF signal
5. UP Channel Button: Tap forward to select an interference free channel
6. DOWN Channel Button: Tap backward to select an interference free channel

Receiver Functions

Receiver Rear:

1. 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

2. Balanced XLR Audio Output

3. Unbalanced 1/4" Jack Output

4. Mic/Line Switch: Use this to adjust the audio output of the wireless microphone system for mic level (-20dB) or line-level (0dB)

5. SQ (Squelch): Turn the squelch to the lowest possible setting (counter clockwise) to eliminate any interfering signals. In RF crowded environments (other wireless microphones, LTE, etc.) it can be required to increase the squelch level (clock wise) to block out unwanted noise. Please note that this will reduce the operating distance of the system, so always seek the lowest possible setting.

6. DC IN: DC input connector for the supplied AC adapter

7. Cable Strain

Transmitter Functions

Handheld Transmitter:

1. Power/Mute Button
2. Power/Mute/Battery Status LED Indicates the power/mute/battery level status
3. Channel Selector: Change the channel setting from 11-14 or 21-24
4. Battery Compartment: Insert two AA batteries making sure the polarity is correct
5. Grille: Protects the microphone capsule and protects against wind

and breath sound

Transmitter Functions

Bodypack Transmitter:

1. Antenna
2. Power/Mute Button
3. Power/Mute/Battery Status LED: Indicates the power/mute/battery level status
4. Input Connector: 4-pin locking connector (HRS)
5. Channel Selector: Change the channel setting from 11-14 or 21-24
6. Gain: Rotary control adjusts the sensitivity of the

transmitter's audio to the level of the connected

mic or instrument

1. 10dB Switch: Activate this switch to attenuate the signal by

an additional 10dB.

1. Battery Compartment: Insert two AA batteries making sure the polarity is

correct

Transmitter Functions

Power/Battery Status LED:

LED	Status
Green	Ready
Red	Muted
Green Flashing On, low battery
Red Flashing Muted, low battery
No Light No power

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 reflections. The transmitter should be at least 2 m from the receiver, as shown in in the diagram below. Keep antennas away from noise sources such as digital equipment, motors, automobiles and neon lights, as well as away from large metal objects.

System Operation

Connecting the receiver:

Plug the DC 12V 500mA power supply into the power connector on the back of the receiver. The power connector is supplied with interchangable UK and EU adaptors.

Connect the receiver output to an audio mixer or amplifier input, using a standard audio cable with 3-pin XLR or 6.35mm Jack connectors. 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. Two-position switch adjusts the audio output attenuation to 0 dB or -20 dB. The factory setting is 0 dB.

System Operation

Handheld Microphone/Bodypack Transmitter set up:

	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 micro-phone/bodypack transmitter for 4 seconds to turn on. If the LED remains flashing after 4 seconds it is indicating that the battery is low on power.
	Use the included key to adjust the frequency of the transmitter to be the same as the receiver.
	Use the 0dB/-10dB switch to adjust the audio input level.

System Operation

Squelch

The squelch function is used to adjust the audio output level to suppress the noise levels. If you experience interference in RF spoiled areas (e.g. areas with a lot of mobile phones) 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. If the squelch level is high, you may need to move the transmitter closer to the receiver. To experience the maximum operating range, make sure the squelch is turned to the lowest position.

Frequencies

Group 1		Group 2
Channel	Frequency [MHz]	Channel	Frequency [MHz]
11	863.300 21	863.700
12	864.300	22	864.700
13	824.875	23	824.400
14	830.850	24	828.650

Each AT-One system comes with Group 1 and Group 2 frequencies available as shown in the table above. 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 (two separate conference rooms e.g.) 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.

System Operation

Troubleshooting

Problem	Solution
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 high- Check for obstructions between the transmitter and receiver
Sound Interference - Check the location of the aerial for obstacles- When using two or more sets simultaneously, make sure the chosen frequencies do not interfere 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 minimum distance between the receiver and the transmitter greater than 2m and the distance between the two transmitters greater than 1m 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

System Operation

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.

Technical line drawing of an electronic device with three open compartments and a central control panel (no text or symbols)

To connect two receivers in a 19" standard rack using the optional AT8677 rack kit, attach the short L shaped brackets to the opposite end of each unit, and connect the units together using two metal connecting plates.

Technical line drawing of a mechanical or electronic device assembly with mounting brackets and connectors (no text or symbols)

Specifications

Overall System

Frequency range: 824 - 831 MHz, 863 - 865 MHz

Modulation mode: FM

Number of frequencies: 2 x 4 frequencies

Operating range: 60m, 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/-20dB)

Antenna Input: BNC type, 50 ohms - BIAS voltage 12 V DC 100mA each

Audio Output: Unbalanced -2dBV, Balanced +4dBV

Output connectors: Unbalanced: 6.3 mm mono jack, Balanced: XLRM-type

Dimensions: 200 mm x 42 mm x 122 mm (W x H x D)

Weight: 418 g without accessories

Accessories included: AC Adapter, Antennas, Rack mount adapter

Optional System Accessory: AT8677 Dual rack mount kit

Specifications

Body-Pack Transmitter

RF Output power: 10 mW

Spurious Emissions: Follows national regulations

Input connections: Pin 1: GND

Pin 2: INST

Pin 3: Mic

Pin 4: DC Bias + 10 V

Batteries (not included): Two 1.5 V AA alkaline

Battery Life: 10 hours - depending on battery type and use pattern

Dimensions: 66 mm x 98 mm x 22 mm (W x H x D)

Weight: 71 g without batteries

Handheld Transmitter

RF Output power: 10 mW

Spurious Emissions: Follows 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 long - 52 mm (diameter)

Weight: 277 g without batteries

Accessories included: Stand clamp

Product compliant in:

AUT, BEL, BGR, HRV, CYP, CZE, DNK, EST, FIN, FRA, DEU, GRC, HUN, IRL, ITA, LVA, LTU, LUX, MLT, NLD, POL, PRT, ROU, SVK, ESP, SWE, GBR

WEEE Regulations

Disposal of Old Electrical & Electronic Equipment (Applicable in European countries with separate collection systems) This symbol on the product or on its packaging indicates that this product shall not be treated as household waste. Instead it shall be handed over to the applicable collection point for the recycling of electrical and electronic equipment. By ensuring this product is disposed of correctly, you will help prevent potential negative consequences for the environment and human health, which could otherwise be caused by inappropriate waste handling of this product. The recycling of materials will help to conserve natural resources. For more detailed information about recycling of this product, please contact your local city office, your household waste disposal service or the shop where you purchased the product.

Audio-Technica Limited

Technica House, Unit 5, Millennium Way, Leeds LS11 5AL, United Kingdom

Manufactured by / fabriqué par / hergestellt durch / Prodotto da / fabricado por / fabricado por / vervaardigd door / Произведено от / Proizvođač / Výrobce / produceret af / valmistatud / Valmistaja / Kotašovkoučetai anó / Gyártó / mhonaraigh / ražojis / Gamintojas / manifatturat minn / wyprodukowane przez / Produs de / Výrobca / Proizvajalec / tillverkad av

Audio-Technica Corp.

2-46-1 Nishi-naruse, Machida, Tokyo 194-8666, Japan

Made In Taiwan

Declaration of Compliance

GB Hereby, Audio-Technica Corp. declares that ATW-T1F, ATW-T3F and ATW-R1F 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

A full copy of the statement of conformity may be obtained from: eu.audio-technica.com/doc

CAUTION! Electrical shock can result from removal of the receiver cover. Refer servicing to qualified service personnel.

• To prevent fire or shock hazard, do not expose this appliance to rain or moisture.
• To prevent fire, do not place any naked flame sources (such as lighted candles) on the apparatus.
• To prevent fire do not cover the ventilation of the apparatus with newspaper, tableclothes, curtains 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 placed close enough to the AC outlet so that you can easily grasp the AC adaptor at any time.

• In case of emergency disconnect the AC adaptor quickly.

- Danger of explosion if battery incorrectly replaced. Replace only with the same or equivalent type.

• Always consider environmental issues and follow your local regulations when disposing of batteries. Do not expose batteries to excessive heat.

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.

Notice to individuals with implanted cardiac pacemakers or AICD devices:

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.

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. 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.

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-Technica. Extensive wireless information is also available at www.audio-technica.com

Audio-Technica Ltd

Technica House

Unit 5 Millenium Way

Leeds

LS11 5AL

UNITED KINGDOM

Tel: [phone]

Fax: [phone]

Audio-Technica SAS

Audio-Technica Central Europe Ltd

Fogado u 3

H-1107 Budapest

HUNGARY

Tel: [phone]

Fax: [phone]