Audio-Technica ATW-R1820 Manuale utente

wireless

1800 Series

Camera-mount UHF Wireless

Microphone Systems (dual-channel)

AT W - R

1820

Dual Channel Receiver

AT W -T

1801

UniPak™ Body-pack Transmitter

AT W -T

1802

Plug-on Transmitter

Installation and Operation

Installation et Utilisation

Installation und Betrieb

Instalación y Manejo

Installazione ed Utilizzazione

Instalação e Funcionamento

Installatie en Bediening

EN

FR

DE

ES

IT

PT

NE

!

0470

OM1800Ser_dual(europ).qxd:Layout 1 1/10/07 14:35 Page 1

This device complies with the European R&TTE directive 1999/05/EC.

Operation is subject to the condition that this device does not cause harmful interference.

Notice to individuals with implanted cardiac pacemakers or AICD devices:

Any source of RF (radio frequency) energy may interfere with 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 at 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 national

regulations. Do not attempt to open the receiver or transmitter. To do so will void the warranty, and may cause improper operation.

Warning: To prevent fire or shock hazard, do not expose this appliance to rain or moisture.

About RF Interference

Please note that wireless frequencies are shared with other radio services.

Please make certain, that you follow the national regulations of the country where you are planning to use the system.

If you need help with operation or frequency selection, please contact your local dealer or Audio-Technica. Extensive wireless information also is

available at www.audio-technica.com.

Contents

Components and System Configurations 3

System Features 4

Quick Overview of System Operation 5

Receiver Controls 6

Operating the Receiver 8

Transmitter Controls 11

Operating the Transmitter 12

Tips for Best Results 14

Available Accessories 14

Scanplans for 1800 Series 15

Specifications 16

Warranty 17

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1800 Series Components (dual-channel)

Receiver and Included Components/Accessories

ATW-R1820

Dual-channel receiver

Two detachable

antennas

Two 45 cm output cables,

TA3F to XLRM

Pouch with belt clip

(holds receiver)

Transmitters

AT W - T 18 0 1

UniPak™ transmitter

ATW-T1802

Plug-on transmitter

Note: All model numbers have an additional letter at the end to indicate frequency band.

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System Features (dual-channel)

• Two completely independent receiver channels in a single unit, for simultaneous

operation of two microphones

• Extremely compact receiver easy to mount on a camera with included Velcro-type

fastener

• UHF reception with up to 996 frequencies selectable in 25kHz steps

• Automatic frequency scanning for easy selection of open channels

• Tone Lock™ squelch system eliminates interference when transmitter is off

• Two independent balanced outputs (you can assign function of each,

independently)

• Headphone monitor output with independent level control

• Battery fuel-level indicator.

• Soft-touch controls for easy frequency selection

• True Diversity operation for freedom from dropouts

• LCD frequency and battery status display with backlight

• Antenna and AF Peak LED indicators

• Easy, user-friendly operation

• Clear, natural sound quality

• System components of the 1800 Series and 3000 Series Wireless Systems can be

used interchangeably*

*Note: The 1800 Series offers UHF Wireless operation frequencies in 25KHz step, therefore

the 1800 transmitters and receivers feature up to 996 selectable frequencies (depending on

the frequency band).

The components of the 1800 Series and 3000 Series are compatible, however considering

that transmitters and receivers of the 3000 Series operate only on 200 programmed

frequencies, a system composed of mixed element from 1800 Series and 3000 Series will

only operate on the 200 pre-programmed frequencies of the 3000 element.

Be certain to set each transmitter receiver pair to identical frequencies.

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Quick Overview of System Operation

Thank you for purchasing this Audio-Technica 1800 Series Dual-channel Camera-mount UHF

Wireless Microphone System. All 1800 Series systems are designed primarily to be used with

video cameras, with the ATW-R1820 dual-channel receiver mounted on a camera and

connected to the camera's audio input; the systems may also be used with other components

equipped with microphone-level input(s).

This system is equipped with a dual receiver, which consists of two completely independent

receiver channels in a single unit, for simultaneous operation of two microphones.

First, insert batteries (

see Battery Installation, page 8

). Note: The ATW-R1820 dual-channel

receiver also functions without batteries if connected to an external power supply

(12V DC source, 500 mA nominal current, not included).

Next, attach the antennas to the antenna input jacks, and mount the ATW-R1820 dual-channel

receiver to your camera (mounting hardware not included); or use the included pouch with belt

clip to attach the ATW-R1820 to your belt. Connect the output cable(s) to the ATW-R1820 and your

video camera (and/or audio mixer). (

See Output A, Output B, and Output Select Switch, page 7.

)

Turn the ATW-R1820 Power Switch on. Choose ”1” to activate only Receiver Channel 1 and Output

A (Power/Peak LED 1 should light red); this option will increase useable battery life. Choose ”Both”

to activate both receiver channels and both outputs (Power/Peak LEDs 1 and 2 should light red).

(

See Power Switch with four positions: External, Off, 1, Both, page 6.

)

Select a frequency for Receiver Channel 1 and Receiver Channel 2. (

See Selecting Frequencies on

your Receiver, page 8.

)

NOTE: Receiver Channel 1 and Receiver Channel 2 must be set to different frequencies to

avoid interference. Transmitter-Receiver pairs must be set to identical frequencies: set

Transmitter 1 to the same frequency as Receiver Channel 1; set Transmitter 2 to the same

frequency as Receiver Channel 2.

If your system is equipped with a UniPak™ Body-pack Transmitter : Plug your wireless essential

microphone (not included) into the UniPak body-pack transmitter(s). Turn the power on, select a

frequency and choose other settings. (

See Operating the Transmitter, page 12.

)

If your system is equipped with a Plug-on Transmitter:

Attach a microphone (dynamic or condenser) to the plug-on transmitter’s input connector

(

see Microphone Input, page 11)

. The transmitter provides power to condenser microphones rated

to operate on 12V phantom power or less. Turn the power on, select a frequency and choose

other settings. (

See Operating the Transmitter, page 12.

)

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6

ATW-R1820 Dual-channel Receiver Controls (front

panel)

Liquid Crystal Display shows battery status and frequency settings. (Use the Dual-channel

Control Switch (6) to select frequencies for Receiver Channel 1 and Receiver Channel 2;

in Hold position, only Receiver Channel 1 frequency appears in LCD.) Battery meter is only active

when Dual-channel Control Switch is in the Hold position.

BNC-type antenna connectors. Antennas A & B (split internally) both provide signals for Receiver

Channel 1 and Receiver Channel 2. Attach the antennas to the antenna input jacks. Make certain

that during operation there is a clear open-air path between the receiver antennas and the

transmitters.

True Diversity operation: two antennas feed two completely independent RF sections on the

same frequency for each receiver; automatic logic circuitry selects the superior signal.

Diversity Indicator 1 indicates which tuner has the better reception and is in operation for

Receiver Channel 1; Diversity Indicator 2 indicates which tuner has the better reception and is in

operation for Receiver Channel 2.

Turns the unit on and off.

Choose ”Ext”, if the unit is connected to an external power supply (12V DC source, 500 mA

nominal current, not included). In ”Ext” position, both receiver channels and both outputs are

activated (indicated by illumination of Power/Peak LEDs 1 and 2).

Choose ”Off” to turn the unit off.

Choose ”1” to activate only a single receiver channel (Receiver Channel 1/Output A, indicated by the

illumination of Power/Peak LED 1). This conserves energy if you are only using one audio channel.

Choose ”Both” to activate both receiver channels and both outputs (indicated by illumination of

Power/Peak LEDs 1 and 2).

Note: Selected receiver will be muted unless Dual-channel Control Switch (6) is in Hold position.

Indicates which receiver channel(s) is (are) in operation. Also indicates receiver overload by

turning off; too much signal will cause blinking LED (off during peaks). To correct overload, adjust

audio gain on transmitter. (

See Audio Input Level (Gain) Adjustments, page 13.

)

This switch allows you to use the single LCD window to control each of the two receiver

channels separately.

To set frequency for Receiver Channel 1, switch to 1 (left position).

To set frequency for Receiver Channel 2, switch to 2 (right position).

To lock settings and operate unit, switch to Hold (centre position).

Note: Receiver Channel 1 is muted when switch is at 1; Receiver Channel 2 is muted when

switch is at 2; both channels un-mute when switch is at Hold.

This LED is red when switch is in position 1, indicating muted operation for Receiver Channel 1. It

is also red when switch is in position 2, indicating muted operation for Receiver Channel 2. LED

turns green in Hold position, indicating unit is ready for operation.

Use with the Dual-channel Control Switch and Up/Down arrows to choose operating frequencies

manually or automatically (using your choice of automatic scan groups).

Press Up or Down arrows, in conjunction with the Set button, to choose operating frequencies

manually or automatically (using your choice of automatic scan groups).

LCD

Antenna Input Jacks

Diversity Indicators

for each antenna

for each receiver

Power Switch

with four positions:

External, Off, 1, Both

Power/Peak LED

Dual-channel Control Switch

with three positions: 1, Hold, 2

Dual-channel Control LED

Set

Up/Down Arrows

1

2

3

4

5

6

7

8

9

2

3

1 7

2

3 4

5

6

9

8

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7

Output A

Output B

Output Select Switch

Receiver Level Controls (1 and 2)

Monitor Select Switch

Monitor Level Control

DC Input

Monitor Output

(rear panel)

Balanced Audio Output Jack: TA3M-type connector. Pin 1: ground (shield); Pin 2: ”audio +”;

Pin 3: ”audio -”. Use the included TA3M to XLRM interface cable to connect the receiver output

to a balanced microphone-level input on a camera, mixer or integrated amplifier.

Balanced Audio Output Jack: TA3M-type connector. Pin 1: ground (shield); Pin 2: ”audio +”;

Pin 3: ”audio -”. Use the included TA3M to XLRM interface cable to connect the receiver output

to a balanced microphone-level input on a camera, mixer or integrated amplifier.

The rear panel provides two balanced audio outputs (Outputs A & B). The unit is equipped with

an output select switch that assigns a signal to each of the audio outputs, as follows:

Output A (left) can be assigned either Receiver Channel 1 or Mix. (Mix = Ch. 1 and Ch. 2

signals mixed together. The relative levels of each signal can be adjusted using the individual

receiver level controls.)

Output B (right) can be assigned either Receiver Channel 1, Receiver Channel 2, or Mix.

Note: Output B is not active when Power Switch is in ”1” position.

Typical configuration: Output A is assigned Channel 1; Output B is assigned Channel 2, feeding

individual channels in a mixer or camera. Many other options are available, providing much

flexibility. For instance:

• If your camera doesn’t accept two inputs, you can sum the signal from both transmitters

in Output A and connect this mixed signal to your camera.

• You can connect Output A (mixed signal) to a camera, and Output B (mixed signal)

to an audio mixer.

• When using the unit with a single transmitter with both outputs active (Power Switch set

at Both), Output A can be used to feed a camera, while Output B can feed an audio mixer

(both with identical signals from Receiver Channel 1).

The signal levels of each receiver signal (Receiver Channel 1 and Receiver Channel 2) may

be adjusted using these controls. When the outputs are assigned to a single receiver signal,

these controls will adjust the output level. (Turn clockwise to increase output level.) When the

outputs are assigned to Mix, these controls adjust the relative levels between the

receiver signals.

This switch assigns a signal to the monitor headphone output.

• Choose 1 (left position) to hear Channel 1 in both ears (mono signal, stereo output);

• Choose 2 (right position) to hear Channel 2 in both ears (mono signal, stereo output);

• Choose OUT (middle position), to hear Output A in the left ear, and Output B in the right ear.

The level control (volume control) for headphones is independent of other level controls.

Turn to the right to increase the volume.

You may connect the unit to an external power supply (12V DC source, 500 mA nominal

current, not included). In this case, move the Power Switch to the ”Ext” position; both receiver

channels are activated (indicated by illumination of Power/Peak LEDs 1 and 2).

1

/4” TRS jack.

10

17

14 11

16 13

15

10

11

12

5

6

13

14

15

16

17

13

12

PIN 1 PIN 3

PIN 2

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8

ATW-R1820 Dual-channel Receiver Batteries

Each ATW-R1820 dual-channel receiver uses six 1.5V AA batteries, not included. Alkaline type is

recommended. Always replace all batteries. Make certain the receiver power is Off before

replacing batteries. Note: The ATW-R1820 receiver also functions without batteries if connected

to an external power supply (12V DC source, 500 mA nominal current, not included).

1. Open the battery compartment door by pushing the catch back.

2. Observe correct polarity as marked and carefully insert six fresh 1.5V AA alkaline batteries

(

see above

).

3. Replace the door, making certain the latch clicks securely in place.

After the batteries are installed, turn the power on by moving the Power Switch to either the 1 or

Both position. The small red power-on LED(s) (

see(

a

) at left

) should light (red light at 1 if Power

Switch is in position 1; red light at 1 and 2 if Power Switch is in Both position) and the LCD window

should come on. If this does not happen, the batteries are installed incorrectly or they are depleted.

The receiver’s ”fuel gauge” battery indicator (

see(

b

) at left

) displays a maximum of four bar

segments. When LCD flashes ”LOW.BAT”, the batteries should be replaced immediately to

ensure continued operation. Note: Battery indicator is only visible in the ”Hold” position.

Operating the Receiver

NOTE: Receiver Channel 1 and Receiver Channel 2 must be set to different frequencies to

avoid interference. Transmitter-Receiver pairs must be set to identical frequencies: set

Transmitter 1 to the same frequency as Receiver Channel 1; set Transmitter 2 to the same

frequency as Receiver Channel 2.

Overview…

1. Turn the power on by moving the Power Switch to either the 1 position (for single-channel

operation) or Both position (for dual-channel operation).

2. Switch the Dual-channel Control Switch to 1 (to set frequency for Receiver Channel 1) or 2

(to set frequency for Receiver Channel 2). Audio output is muted for the channel that is selected.

3. Press the Set button to enter the Frequency Selection Menu mode; the word ”MENU” will appear.

4. Use the Up/Down arrows to cycle through functions:

- continously pressing the up key will cycle through

the different scan groups till you reach Quit,

allowing exit from Menu mode.

First…

Turn the power on by moving the Power Switch to Both (for dual-channel operation). To set

frequency for Receiver Channel 1, switch Dual-channel Control Switch to 1 (left position).

1. Press Set button. The word ”MENU” will appear. Press Up arrow to show current frequency.

Press Set button and frequency will begin to flash; then use up and down arrows to adjust

the frequency. Frequency changes in 25 kHz steps. To increase scroll speed, hold the Up or

Down arrow for more than 4 seconds.

2. When you arrive at desired frequency, press and hold the Set button until the word ”STORED”

appears. Frequency is now set.

Battery Selection

Battery Installation

Battery Condition Indicator

Selecting Frequencies

on your Receiver

Dual-channel Operation

(using two transmitters)

Setting Receiver Frequency Manually

a

b

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9

3. To ”back out” of the Manual Frequency Set mode without making a frequency choice, simply

press the Set button once to exit the menu and return the receiver to normal operation.

The word ”ESCAPE” will appear in the window, and no changes in frequency setting will be

made; the receiver's audio output will again be enabled (when Dual-channel Control Switch

is returned to Hold position).

To set frequency for Receiver Channel 2, switch Dual-channel Control Switch to 2 (right position).

Repeat steps 1-2 above.

To lock settings and operate unit, switch Dual-channel Control Switch to Hold (centre position).

Note: While Channel Selection mode is still active, if the Dual-channel Control Switch is

moved back to Hold position before channel selection is complete, LED will remain red

and audio will remain muted until the control sequence is completed.

First…

Turn the power on by moving the Power Switch to Both (for dual-channel operation).

Then switch Dual-channel Control Switch to 1 (left position).

1. Press the Set button to enter the Frequency Selection Menu mode; the word ”MENU” will appear.

2. Use the Up or Down arrow to reach Scan 1, Scan 2, ... (the number of scangroups depends on

the frequency band of your system).. Press the Set button once to select one of the Scan

groups. The word ”SCAN1”, ”SCAN2”, ... will flash in the LCD window.

3. Press the Up or Down arrow to begin the scan. Press the Up arrow to scan up from the lowest

frequency in the group; press the Down arrow to scan down from the highest frequency

in the group.

4. The first available frequency will flash in the LCD window. To activate this frequency selection,

press and hold the Set button until the word ”STORED” appears in the LCD window.

5. If you do not wish to use the frequency found, you may press the Up or Down arrow. The Up

arrow will scan upwards, the Down arrow will scan downwards, from the frequency you are on.

6. To set frequency for Receiver Channel 2 (for dual-channel operation), switch Dual-channel

Control Switch to 2 (right position). Repeat steps 1- 4 above. Note: Be certain to select the

same Scan Group that you used for Receiver Channel 1.

7. To lock settings and operate unit in dual-channel operation (using two transmitters), switch

Dual-channel Control Switch to Hold (centre position). The receiver will return to normal operation,

audio function will be restored and the Dual-channel Control LED indictor will turn green.

8. If you are using multiple systems, use the same scan group for all receivers. After completing the

first receiver’s scan and frequency selections, set its transmitters to the appropriate frequencies

(

see How to Set Frequencies on your Transmitter, page 12

); leave the transmitters On, and

run the next receiver’s automatic scan function. Always set a receiver-transmitter pair to the

same frequency before using the automatic scan function to select frequencies for the next receiver.

In the event that no more free frequencies are available within the scan group, the receiver will

indicate ”END” on the receiver display. In this case, select a different scan group for both

Receiver Channels 1 and 2 and re-scan.

Note: While Channel Selection mode is still active, if the Dual-channel Control Switch is

moved back to Hold position before channel selection is complete, LED will remain red

and audio will remain muted until the control sequence is completed.

First…

Turn the power on by moving the Power Switch to the 1 position (for single-channel operation).

Switch Dual-channel Control Switch to 1 (left position). Output from Receiver Channel 1 is now

muted. Note: Output B is not active when the Power Switch is in the ”1” position.

1. Press Set button. The word ”MENU” will appear. Press Up arrow to show current frequency.

Press Set button and frequency will begin to flash; use up and down arrows to adjust the

frequency. Frequency changes in 25 kHz steps. To increase scroll speed, hold the up or down

arrow for more than 4 seconds.

2. When you arrive at desired frequency, press and hold the Set button until the word ”STORED”

appears. Frequency (which appears on the screen) is now set.

3. To ”back out” of the Manual Frequency Set mode without making a frequency choice, simply

press the Set button once to exit the menu and return the receiver to normal operation. The

word ”ESCAPE” will appear in the window, and no changes in frequency setting will be

made; the receiver's audio output will again be enabled.

To lock settings, un-mute and operate the unit, switch Dual-channel Control Switch to Hold

(centre position).

Using the Automatic Scan Function

to Set Receiver Frequency

(dual-channel operation)

Single-channel Operation

(using one transmitter)

Setting Receiver Frequency Manually

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First…

Turn the power on by moving the Power Switch to 1 (for single-channel operation). Then switch

Dual-channel Control Switch to 1 (left position). Note: Output B is not active when Power

Switch is in the ”1” position.

1. Press the Set button to enter the Frequency Selection Menu mode; the word ”MENU” will appear.

2. Use the Up or Down arrow to reach Scan 1, Scan 2, ... (the number of scangroups depends on

the frequency band of your system). Press the Set button once to select one of the Scan

groups. The word ”SCAN1”, ”SCAN2”, ... will flash in the LCD window.

3. Press the Up or Down arrow button to begin the scan. Press the Up arrow to scan up from

the lowest frequency in the group; press the Down arrow to scan down from the highest

frequency in the group.

4. The first available frequency will flash in the LCD window. To activate this frequency selection,

press and hold the Set button until the word ”STORED” appears in the LCD window.

5. If you do not wish to use the frequency found, you may press the Up or Down arrow.

The Up arrow will scan upwards, the Down arrow will scan downwards, from the

frequency you are on.

6. To lock settings and operate unit in single-channel operation (using one transmitter),

switch Dual-channel Control Switch to Hold (centre position). The receiver will return to

normal operation, audio function will be restored and the Dual-channel Control LED

indictor will turn green.

Using the Automatic Scan Function

to Set Receiver Frequency

(single-channel operation)

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11

Antenna

Power-on LED

LCD

Audio Input Jack

Microphone Input

Power/Mute Button

Up/Down Arrows

Set Button

Sliding Control Cover

(3-position)

Sliding Control Cover

Battery Door

Mounting Clip

AT W -T1801 UniPak

™

Body-pack &

AT W -T

1802 Plug-on Transmitter Controls

The ATW-T1801 UniPak

™

body-pack transmitter includes a field-replaceable flexible antenna. For

best results, allow the antenna to hang freely and full length from the bottom of the transmitter. If

the received signal is marginal, experiment with different transmitter positions or try

repositioning the receiver. Since the transmitter antenna simply screws in, check to make certain

it is snugly attached (finger-tight). Do not change the length of the transmitting antenna.

Green light indicates power is on and un-muted; red light indicates that audio is muted.

The light will blink when the batteries are low.

Liquid Crystal Display presents setup and operating information. The LCD in the transmitters is

designed for greatest contrast and best viewing with the window rotated somewhat

away

from

the viewer (about 30 degrees), not straight-on, for a more convenient holding/viewing

position. The display is illuminated with a backlight when you press Set to access transmitter

functions. The backlight will automatically turn off within a set period of time.

Connect an audio input device (microphone or guitar cable) to the audio input jack on the bottom of

the ATW-T1801 UniPak

™

Body-pack Transmitter. A number of Audio-Technica professional

microphones and cables are available separately, pre-terminated with a compatible input

connector (

see page 14

). The cable connector latches automatically when inserted into the

transmitter jack. To unlatch and remove the connector, pull up on the connector’s knurled

metal collar.

The ATW-T1802 plug-on transmitter has a 3-pin XLRF-type input connector with a locking collar.

Use either a dynamic or a condenser microphone. The transmitter provides power to condenser

microphones rated to operate on 12V phantom power or less. To attach the microphone, rotate the

threaded locking collar fully clockwise (”down”) until it reaches the transmitter housing (

see (

a

)

at right

). Press the microphone and transmitter together (

see (

b

) at right

). Rotate the threaded

collar ”up” until it is firmly against the end of the mic (

see (

c

) at right

). Make certain the mic is

securely attached before use. To detach the microphone, reverse the steps above. Always

loosen the threaded collar fully before attempting to disconnect the mic.

For on/off and mute functions.

Press Up or Down arrows, in conjunction with the Set button, to choose operating frequencies

and access transmitter functions.

Use in conjunction with the Up/Down arrows, to choose operating frequencies and access

transmitter functions.

This 3-position sliding cover on the body-pack transmitter’s control panel prevents accidental

shut-off or channel-switching.

This sliding cover on the plug-on transmitter’s control panel helps to prevent accidental shut-off

or channel-switching.

Open by sliding the catch down (on body-pack) or pushing in direction of arrow (on plug-on transmitter).

The ATW-T

1801 UniPak

™

transmitter’s mounting clip may be installed with the case positioned

either ”up” or ”down,” depending upon which is preferred for the application. To turn the clip

around, spring the ends of the clip out of the two holes on the sides of the transmitter case and

reinstall it facing in the opposite direction.

POWER/MUTE

SET

POWER

MUTE

SET

ATW-T1801 UHF TRANSMITTER

1

2

3

4

5

6

7

8

9

10

11

12

6

2

4

5

6

2

3

1

7

8

9

10

11

12

a

b

c

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12

Battery Selection

Transmitter Battery

Installation

Battery Condition

Turning your Transmitter On & Off

How to Set Frequencies

on your Transmitter

How to Access & Use the Function Menu

on your Transmitter

POWER

MUTE

SET

ATW-T1801 UHF TRANSMITTER

POWER/MUTE

SET

Transmitter Batteries

Each transmitter uses two 1.5V AA batteries, not included. Alkaline type is recommended.

Always replace both batteries. Make certain the transmitter power is Off before replacing batteries.

1. Open the battery compartment door by sliding the catch down (on body-pack) or pushing in

direction of arrow (on plug-on transmitter).

2. Observe correct polarity as marked on the metal contacts on the door and carefully insert

two fresh 1.5V AA alkaline batteries.

3. Close the door, making certain the latch clicks securely in place.

After the batteries are installed, turn the power on by pressing and holding the Power/Mute

button. The small power-on LED (

see (

a

)at left

) should light green and the LCD window should

come on. If this does not happen, the batteries are installed incorrectly or they are depleted.

The transmitter’s ”fuel gauge” battery indicator in the LCD displays a maximum of four bar

segments. When it flashes ”LOW.BAT”, the batteries should be replaced immediately to ensure

continued operation. (Additionally, the power-on LED will flash when the batteries are low.)

Operating theTransmitter

To turn the transmitter on, press and hold the Power/Mute button until the power indicator lights

green, and the LCD window comes on (about 1-2 seconds). The operating frequency will show in

the window after the power-up sequence.

To turn the transmitter off, press and hold the Power/Mute button again, until the power indicator

and the LCD window are extinguished (about 1-2 seconds). The LCD window will show

”PWR.OFF” before shutdown.

NOTE: Transmitter-Receiver pairs must be set to identical frequencies: set Transmitter 1

to the same frequency as Receiver Channel 1; set Transmitter 2 to the same frequency as

Receiver Channel 2.

1. Turn transmitter on.

2. Press the Set button once and the small word ”MENU” will appear above the frequency.

3. Press the Set button again and the small flashing word ”EDIT” will appear to the right

of ”MENU”.

4. Use the Up/Down arrows to change the transmitter frequency. Press either arrow for 25 kHz

steps, or hold down either arrow for rapid cycling through the range. Frequencies ”wrap

around” when the top or bottom of the band is reached. Select the exact frequency

displayed on the receiver.

5. To activate this frequency selection, press and hold the Set button until the word ”STORED”

appears in the transmitter’s window. (If you do not wish to complete this selection, just

press the Set button once: the word ”ESCAPE” will appear briefly in the window and the

transmitter will return to the Menu mode.)

6. When finished entering a frequency, press the Up arrow once to move to ”QUIT”. Then press

the Set button once to exit the menu. The word ”MENU” in the transmitter window will

go off, indicating the return to normal operation.

1. Turn transmitter on.

2. Press the Set button once; the small word ”MENU” will appear above the frequency.

3. When in the Menu mode, use the Up and Down arrows to cycle through the following functions:

• Frequency • Input Select (body-pack only)

• RF Power • Reset to Defaults

• Audio Input Level • Quit (exit menu)

• Power/Mute Locks

4. To make a change in the default setting:

• Press Set button once;

• Press Up or Down arrow until you reach desired setting;

• Press and hold Set button until the word ”STORED” appears in the LCD window.

• (If you do not wish to complete this selection, just press the Set button once: the word

”ESCAPE” will appear briefly in the window and the transmitter will return to the Menu mode.)

a

ATW-T1801 ATW-T1802

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13

Transmitter Functions

RF Power Adjustments on your Transmitter

Audio Input Level (Gain) Adjustments

on your Transmitter

Using the Mute and Un-Mute Functions

on your Transmitter

Power/Mute Locks

Audio Input Selector

Function Menu Default Setting Choices (Edit) Wrap-around*

Frequency Lowest in band up to 996 frequencies Yes

(25 kHz steps)

RF Power RF LOW RF LOW, RF HI Yes

Audio Input Level +6 dB

-6 dB, 0 dB, +6 dB, +12 dB (+18 dB***)

No

Power/Mute Locks NO.LOC NO.LOC, ALL.LOC, Yes

MUT.LOC, PWR.LOC

Input Select** MIC MIC, INST Yes

Reset to Defaults PRESET See

Restore Default –

Settings,

page 14

Quit QUIT Press Set to exit –

* Continue in the same Up/Down direction and choices ”wrap around” to the other end of the range.

**On UniPak

™

transmitter only

*** On Plug-on transmitter only

RF power may be set to ”RF HI” (30 mW nominal) or ”RF LOW” (10 mW nominal) through the

function menu. The default setting is ”RF LOW”. While the High setting normally provides

maximum operating range, the Low setting will help extend battery life. The Low setting may also

be preferred in multichannel systems, or when operating very close to the receiver, to reduce the

possibility of interference or receiver RF overload.

Correct adjustment of transmitter audio input, receiver audio output, and mixer/amplifier input and

output levels is important for best performance.

A 4-position audio input gain setting, selected through the function menu, allows you to match the

audio input level to the transmitter for best modulation with minimum distortion. The choices are

+12 dB, +6 dB, 0 dB and -6 dB. The default value is +6 dB. Select the highest setting that does not

result in over-modulation with the highest audio/instrument input levels (an AF

indication on the receiver no higher than ”0”).

When the transmitter is muted, it produces RF with no audio. When the transmitter is

un-muted, it produces both RF and audio. To mute the transmitter (cut off the audio, but

continue the RF output), press and release the Power/Mute button once. The word ”MUTE” will

appear in the LCD window, just below the frequency, and the Power-on LED will turn red.

To un-mute the transmitter (restore the audio), press and release the Power/Mute button once

again. The ”MUTE” will disappear from the LCD window, and the Power-on LED will turn green.

The Power/Mute button can be programmed (through the function menu): power can be locked On;

Mute can be locked either On or Off.

Setting Description

NO.LOC The Power and Mute functions operate normally.

ALL.LOC Both the Power and Mute functions are locked into their status as of the time

”ALL.LOC” is applied. (Power On, and Mute either On or Off.) Note: ”ALL.LOC”

must be re-accessed and the setting changed to turn the transmitter off.

MUT.LOC In ”MUT.LOC” mode, the audio cannot be muted. The Power functioning is

unaffected. (If ”MUT.LOC” is applied while the transmitter is muted, pressing the

Power/Mute button once will return to un-muted operation; thereafter the Mute

function is disabled until the setting is changed again.)

PWR.LOC Power is locked On as of the time ”PWR.LOC”is applied. The Mute functioning

is unaffected. Note: When in the ”PWR.LOC” mode, the transmitter may be

turned off by: (1) Re-accessing the .LOC Menu and changing the setting, or

(2) Removing and re-installing the batteries. When the transmitter is

turned on again, it will power-up in the ”NO.LOC” mode. (Only the ”PWR.LOC”

function will change when batteries are removed; all other settings remain stored

in memory.)

If an attempt is made to take an action that currently is locked out, the LCD will

display ”LOC.KED” briefly, then return to its previously-displayed contents.

The UniPak

™

body-pack transmitter provides input connections for both low-impedance (Lo-Z)

microphones and high-impedance (Hi-Z) instruments. A wide range of Audio-Technica Wireless

Essentials

™

microphones and cables are available pre-terminated with the appropriate

professional latching connector (

see page 14

).

Select the desired input – microphone or instrument – through the function menu; ”MIC” or

”INST” will show in the LCD window, just below the frequency.

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OM1800Ser_dual(europ).qxd:Layout 1 1/10/07 14:35 Page 13

Operating theTransmitter

1. A ”PRESET” selection in the menu allows you to reset all transmitter functions to their

factory-default values.

2. Press the Set button once to move to Menu mode.

3. Press the Up arrow twice to move to ”PRESET” in the LCD window.

4. Press the Set button once and ”LOAD” will appear in the LCD.

5. Press and hold the Set button until ”DEF” appears in the LCD.

6. Press and hold the Set button until ”LOADED” appears briefly in the LCD. The window will

then revert to ”PRESET”.

7. Press the Down arrow once to move to ”QUIT”.

8. Press the Set button once to exit the Menu mode and return to normal operation, with all

factory-default settings restored.

Tips for Best Results

1. Use only fresh alkaline batteries. Always replace all batteries.

Do not use ”general purpose” (carbon-zinc) batteries.

2. Position the dual-channel receiver so that it has the fewest possible obstructions between it

and the normal location of the transmitters. Line-of-sight is best.

3. The transmitters and the dual-channel receiver should be as close together as conveniently

possible, but no closer together than three feet.

4. The receiver antennas should be in the open and away from any metal.

5. Each transmitter-receiver pair must be set to the same frequency.

6. Only one transmitter on a given frequency should be ”on” at a time.

7. The power switch on the transmitter has four positions: ”Ext.,” ”Off”,”1” and ”Both.”

8. If the ”Out Level” of either receiver channel is set too high, it may over-drive the input of the

camera/mixer or clip the output of the receiver, causing distortion. Conversely, if the receiver

output is set too low, the overall signal-to-noise ratio of the system may be reduced.

9. 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 in order to select an interference-

free channel. Always turn the units off before changing frequencies.

10. Turn the receiver and transmitter off when not in use. Remove the batteries during long-term storage.

Available Accessories

AT829cW Cardioid condenser lavalier microphone

MT830cW Omnidirectional condenser lavalier microphone

MT830cW-TH ”Theater” model, same as MT830cW except beige-colour mic and cable

AT831cW Cardioid condenser lavalier microphone

AT889cW Headworn noise-cancelling condenser microphone

AT892cW MicroSet

®

headworn omnidirectional condenser microphone

AT892cW-TH ”Theater” model, same as AT892cW except beige-colour mic, earset and cable

AT892cW-CO ”Theater” model, same as AT892cW except cocoa-colour mic, earset and cable

AT898cW Subminiature cardioid condenser lavalier microphone

AT899cW Subminiature omnidirectional condenser lavalier microphone

AT899cW-TH ”Theater” model, same as AT899cW except beige-colour mic and cable

ATM350cW Cardioid condenser instrument microphone

ATM73cW Headworn cardioid condenser microphone

ATM75cW Headworn cardioid condenser microphone

PRO8HEcW Headworn hypercardioid dynamic microphone

PRO35cW Cardioid condenser instrument microphone

U851cW Cardioid condenser boundary microphone

U857ALcW Cardioid condenser gooseneck microphone

AT-8319 Hi-Z instrument/guitar cable with

1

/4” phone plug

AT-8317 Connecting cable for UniPak transmitter with an XLRF-type input connector,

for Lo-Z microphones with XLRM-type output terminations

RF Cables Low-loss design, 50 ohm impedance, with BNC-to-BNC connectors:

AC12 RG58-type cable (4 m)

AC25 RG8-type cable (8 m)

AC50 RG8-type cable (16 m)

AC100 RG8-type cable (33 m)

ATW-RMS1 Remote mute switch designed to be installed between a wireless microphone

using an HRS-type connector and its associated body-pack wireless transmitter

ATW-RCS1 Remote momentary-mute/cough switch designed to be installed between a

wireless microphone using an HRS-type connector and its associated body-pack

wireless transmitter

Visit www.audio-technica.com for detailed information on all of our wireless accessories.

14

Restore Default Settings

Wireless Essentials

®

Microphones and Cables

(all Wireless Essentials accessories are

terminated for use with UniPak™ transmitters)

Receiver Accessories

Transmitter Accessories

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OM1800Ser_dual(europ).qxd:Layout 1 1/10/07 14:35 Page 14

15

Scanplans for 1800 Series

Please make certain that you have a licence for the frequency you are intending to use BEFORE you operate the system.

The regulations differ from country to country and might change from time to time

E-Band (795.500 - 820.000 MHz)

Scan - 1 Scan - 2 Scan - 3 Scan - 4 Scan - 5 Scan - 6 Scan - 7 Scan - 8 Scan - 9

1 795,500 796,250 795,550 798,250 795,825 796,000 796,500 800,100 806,250

2 796,500 798,500 796,775 799,200 796,950 796,700 796,900 800,850 806,750

3 798,750 799,750 797,050 799,900 797,500 797,100 797,700 802,350 807,000

4 800,225 802,225 797,750 802,825 798,600 797,900 800,775 803,100 808,250

5 802,500 803,500 806,850 803,350 802,425 806,300 806,100 806,850 808,500

6 810,025 812,000 807,400 808,900 809,325 807,000 806,500 807,600 811,500

7 812,500 813,700 811,100 809,725 810,425 810,775 810,225 816,450 811,750

8 814,500 815,750 811,725 811,350 811,250 812,700 810,975 817,200 813,000

9 816,225 818,225 813,050 812,100 811,825 813,500 812,500 818,700 813,250

10 818,500 819,250 813,800 812,575 813,500 813,900 813,700 819,450 813,750

Notes (**) Fullrange 1 Fullrange 2 use for: use for: use for: use for: use for: limited to limited to

compatible with compatible with German user German user German user French series 3 French series 2 800.100 MHz - European TV-

4000/5000 4000/5000 group 4 group 3 group 2 819.900 MHz Channel 63

scan plan scan plan

Used European

TV-Channels 61, 62, 63, 64 61, 62, 63, 64 61 + 63 62 + 63 61, 62, 63 61 + 63 61, 62, 63 62, 63, 64 63

(**) These notes are valid on the 01.01.2007. Please check the latest regulations BEFORE operating the system.

F-Band (840.125 - 864.875 MHz)

Scan - 1 Scan - 2 Scan - 3 Scan - 4 Scan - 5 Scan - 6 Scan - 7 Scan - 8 Scan - 9

1 863,125 847,250 846,850 846,250 846,100 840,125 863,100 855,275 846,875

2 863,375 848,375 847,400 847,200 846,600 840,875 863,500 855,900 847,125

3 864,375 850,125 848,525 847,900 847,575 842,375 864,300 856,175 847,625

4 864,875 854,625 849,925 850,825 848,050 842,625 864,700 857,625 847,875

5 840,250 854,900 851,050 851,350 850,425 843,375 856,300 857,950 849,625

6 841,375 857,125 851,600 856,900 858,425 858,750 856,800 860,900 849,875

7 842,750 858,250 859,100 857,725 859,250 859,000 857,050 861,200 857,850

8 843,375 858,625 859,725 859,350 859,825 859,500 858,300 861,750 860,050

9 844,625 860,400 861,050 860,100 861,500 861,000 858,550 863,125 860,300

10 847,000 861,125 861,800 860,575 861,900 861,750 859,050 863,375 860,800

Notes (**) Fullrange 1 Fullrange 2 use for: use for: use for: prefered use for prefered use for UK-Shared

compatible with compatible with German user German user German user The Netherlands Spain (1-4) frequencies

4000/5000 4000/5000 group 4 group 3 group 2

scan plan scan plan

Used European deregulated(*) deregulated(*) deregulated(*)

TV-Channels 67, 68 68 + 69 68 + 69 68 + 69 68 + 69 67 + 69 + 69 + 69 68 + 69

(*) When operating in the deregulated frequencyrange (863.000 - 865.00 MHz) in countries following the R&TTE you have to set the transmitter power to LOW (10mW).

(**) These notes are valid on the 01.01.2007. Please check the latest regulations BEFORE operating the system.

C-Band (541.500 - 566.375 MHz) D-Band (655.500 - 680.375 MHz)

Scan - 1 Scan - 2 Scan - 3 Scan - 4 Scan - 5 Scan - 1 Scan - 2 Scan - 3

1 541,500 541,875 541,500 1 655,500 655,875 655,500

2 544,000 542,250 541,750 2 658,000 656,250 655,750

3 544,375 544,500 542,625 3 658,375 658,500 656,625

4 545,250 545,750 544,500 4 659,250 659,750 658,500

5 545,500 546,000 544,750 5 659,500 660,000 658,750

6 547,500 546,500 545,500 6 661,500 660,500 659,500

7 548,375 550,375 548,750 7 662,375 664,375 662,750

8 548,750 551,500 551,250 8 662,750 665,500 665,250

9 555,625 557,625 557,250 9 669,625 671,625 671,250

10 557,750 558,000 558,375 10 671,750 672,000 672,375

11 560,750 560,000 559,125 11 674,750 674,000 673,125

12 561,750 560,500 560,125 12 675,750 674,500 674,125

13 562,125 561,750 560,500 13 676,125 675,750 674,500

14 564,000 562,750 561,375 14 678,000 676,750 675,375

15 564,250 564,250 564,625 15 678,250 678,250 678,625

16 565,500 566,250 565,125 16 679,500 680,250 679,125

used European 29, 30, 31, 32 29, 30, 31, 29, 30, 31, 32 used European 44, 45, 46, 47 44, 45, 46, 47 44, 45, 46, 47

TV-Channels 32, 33 TV-Channels

*Specifications are subject to change without notice.

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16

Overall System

ATW-R1820 Dual-channel Receiver

ATW-T1801 UniPak

™

Body-pack Transmitter

ATW-T1802 Plug-on Transmitter

Specifications

*

UHF Operating Frequency

Band C : 541.500 to 566.375 MHz

Band D : 655.500 to 680.375 MHz

Band E : 795.500 to 820.000 MHz

Band F : 840.125 to 864.875 MHz

Number of Operating Frequencies up to 996 frequencies per band

Frequency Stability ±0.005%, Phase Lock Loop frequency control

Modulation Mode FM

Normal Deviation ±10kHz

Operating Range 100m (300’) typical

Operating Temperature Range -5º C (23º F) to 45º C (113º F)

Frequency Response 70 Hz to 15 kHz

Receiving System Dual independent RF sections,

automatic-switching diversity

Image Rejection >50 dB typical

Signal-to-Noise Ratio 104 dB at 30 kHz deviation (A-weighted),

maximum modulation 37 kHz

Total Harmonic Distortion <1% (±10 kHz deviation at 1 kHz)

Sensitivity 25 dBµV, (S/N 60 dB at 5 kHz deviation, A-weighted)

Audio Output (balanced) 27 mV (at 1 kHz, ±5 kHz deviation)

Output Connector 3-pin mini XLR (TA3M-type)

Monitor Headphone Output (typical) 35 mW max., 32 ohm load (per channel)

Monitor Headphone Jack 3.5 mm TRS, signals on both Tip and Ring

External Power Requirements 12V DC nominal, 500 mA

Batteries (not included) Six 1.5V AA alkaline

Current Consumption (battery)

Dual-channel Operation 600 mA typical

Single-channel Operation 350 mA typical

Battery Life

Dual-channel Operation 6 hours typical*

Single-channel Operation 10 hours typical*

* depending on battery type and use pattern

Dimensions 85.0 mm (3.35”) W x 133.0 mm (5.24”) H x 36.0 mm (1.42”) D

Net Weight (without batteries) 425 grams (15.0 oz)

Accessories Included Two flexible UHF antennas; two 45cm (18”) TA3F to XLRM

output cables; belt pouch

RF Power Output High: 30 mW; Low: 10 mW, nominal

Spurious Emissions According to R&TTE Directive

Dynamic Range >105 dB, A-weighted

Input Connections High impedance, low impedance, bias

Batteries (not included) Two 1.5V AA alkaline

Current Consumption High: 180 mA; Low: 160 mA, typical

Battery Life Approximately 6 hours (High); 8 hours (Low),

depending on battery type and use pattern

Dimensions 66.0 mm (2.60”) W x 87.0 mm (3.43”) H x 24.0 mm (0.94”) D

Net Weight (without batteries) 80 grams (2.8 oz)

RF Power Output High: 30 mW; Low: 10 mW, nominal

Spurious Emissions According to R&TTE Directive

Dynamic Range >105 dB, A-weighted

Input Connector 3-pin locking XLRF-type

Microphone Power Provides power to condenser microphones rated to

operate on 12V phantom power or less.

Batteries (not included) Two 1.5V AA alkaline

Current Consumption High: 180 mA; Low: 160 mA, typical

Battery Life Approximately 6 hours (High); 8 hours (Low),

depending on battery type and use pattern

Dimensions 40.0 mm (1.57”) x 111.0 mm (4.37”) x 40.0 mm (1.57”)

Net Weight (without batteries) 199 grams (7.0 oz)

*Specifications are subject to change without notice.

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Disclaimer

Audio-Technica operates a policy of continuous development. Audio-Technica reserves the right

to make changes and improvements to any of the products described in this document without

prior notice.

Under no circumstances shall Audio-Technica be responsible for any loss of data or income or

any special, incidental, consequential or indirect damages howsoever caused.

The contents of this document are provided ”as is”. Except as required by applicable law, no

warranties of any kind, either express or implied, including, but not limited to, the implied

warranties of merchantability and fitness for a particular purpose, are made in relation to the

accuracy, reliability or contents of this document. Audio-Technica reserves the right to revise this

document or withdraw it at any time without prior notice.

The availability of particular products may vary by country. Please check with the distributor for

your territory. In some countries there may be restrictions in using this equipment. Please check

with your local radio frequency authorities.

Two-Years Limited Warranty

Audio-Technica microphones and accessories purchased in the UK and EU / Europe are

guaranteed for two years from date of purchase by Audio-Technica Ltd. to be free of defects in

materials and workmanship. In the 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 the

faulty product is delivered to Audio-Technica Ltd., prepaid, together with the proof of purchase.

Prior approval from Audio-Technica Ltd. is required for return. This warranty excludes defects

due to normal wear, abuse, shipping damage, or failure to use product in accordance with

instructions. This warranty is void in the event of unauthorized repair or modification.

For return approval and shipping information, contact the Service Department,

Audio-Technica Ltd. Tel: +44 (0)113 277 1441.

Outside the U.K, please contact your local dealer for warranty details.

Visit our Website!

www.audio-technica.com

Audio-Technica Ltd

Technica House , Royal London Industrial Estate, Old Lane, Leeds LS11 8AG England

Tel: +44 (0) 113 277 1441 - Fax: +44 (0) 113 270 4836 - Email: [email protected]

OM1800Ser_dual(europ).qxd:Layout 1 1/10/07 14:35 Page 17

wireless

Séries 1800

Systèmes Microphone UHF (deux canaux)

Pour montage sur camescope

AT W - R

1820

Récepteur deux canaux

AT W -T

1801

Émetteur ceinture UniPak™

AT W -T

1802

Émetteur « Plug-on »

Installation et Utilisation

FR

!

0470

OM1800Ser_dual(europ).qxd:Layout 1 1/10/07 14:35 Page 19

Cet appareil est conforme à la directive européenne R&TTE 1999/05/EC.

Son utilisation est soumise à la réserve de ne pas provoquer d’interférences nuisibles.

À l’attention

des porteurs de stimulateurs cardiaques ou défibrillateurs :

Toute source d’énergie HF (fréquences radio) est susceptible d’interférer avec le fonctionnement normal de l’appareil implanté. Tous les microphones

HF sont dotés d’émetteurs de faible puissance (sortie inférieure à 0,05 W) : il est donc peu probable qu’ils constituent un problème, d’autant plus

qu’ils sont tenus à quelques dizaines de centimètres de la région cardiaque. En revanche, un émetteur portable, lui, se tient à proximité immédiate

du corps. Nous suggérons donc de l’attacher à la ceinture, et non de le dissimuler dans une poche poitrine par exemple, où il se trouverait à

proximité immédiate de l’appareil médical. Veuillez également noter que tout éventuel problème de fonctionnement de l’appareil médical cessera

en éteignant la source de puissance HF. Si vous avez des questions ou si vous rencontrez des problèmes lors de l’utilisation d’appareils HF, veuillez

contacter votre spécialiste ou votre fournisseur de matériel médical.

ATTENTION ! Les circuits électroniques se trouvant à l’intérieur du récepteur et de l’émetteur ont été réglés avec précision pour des performances

optimales, en conformité avec les réglementations nationales. N’essayez pas d’ouvrir le récepteur ou l’émetteur : vous annuleriez la garantie, et vous

risquez de provoquer des dysfonctionnements.

Avertissement : Pour éviter tout incendie ou électrocution, n’exposez pas cet appareil à la pluie ni à l’humidité.

À propos des interférences HF

N’oubliez pas que les fréquences utilisées pour les liaisons audio HF sont partagées avec d’autres services radio.

Assurez-vous par conséquent que vous respectez les réglementations en vigueur, au niveau national, dans le pays où vous désirez utiliser le système.

Si vous désirez être assisté dans le choix des fréquences de travail ou pour la mise en place de votre système, veuillez contacter votre revendeur local

ou, directement, Audio-Technica. Vous trouverez également des informations sur la HF sur notre site Web, www.audio-technica.com.

Table des matières

Configurations système 21

Fonctions des systèmes Series 1800 (deux canaux) 22

Présentation rapide du fonctionnement du système 23

Les commandes du récepteur deux canaux ATW-R1820 24

Fonctionnement du récepteur 26

Commandes des émetteurs 29

Fonctionnement des émetteurs 30

Astuces pour obtenir de meilleurs résultats 32

Accessoires disponibles 32

Plans de Scan (recherche automatique de fréquence) pour les appareils 1800-Series 33

Caractéristiques 34

Garantie 35

20

F

R

OM1800Ser_dual(europ).qxd:Layout 1 1/10/07 14:35 Page 20

F

R

21

1800 Series (deux canaux)

Récepteur et composants/accessoires fournis

ATW-R1820

Récepteur deux canaux

Deux antennes

détachables

Deux câbles de sortie 45 cm,

TA3F vers XLR mâle

Housse avec pince ceinture

(pour le récepteur)

Émetteurs

AT W -T 1 8 0 1

Émetteur de poche UniPak™

ATW-T1802

Émetteur « Plug-on »

Note : Toutes les références de modèles possèdent une lettre à la fin indiquant leur bande de fréquence.

OM1800Ser_dual(europ).qxd:Layout 1 1/10/07 14:36 Page 21

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