Audio Technica ATW-1821 User manual

1800 Series (Dual-Channel) Owners Manual

1800 Series

Camera-mount UHF Wireless Microphone Systems (dual-channel)

ATW-1821 Body-pack Transmitters System

ATW-1822 Plug-on Transmitters System

ATW-1823 Plug-on and Body-pack Transmitters System

Installation and Operation

This device complies with part 15 of the FCC Rules. Operation is subject to the condition that this

device does not cause harmful interference.

This device complies with INDUSTRY CANADA R.S.S. 210, en conformité avec IC: RSS-

210/CNR210.

Operation is subject to the following conditions: 1) This device may not cause harmful

interference and 2) this device must accept any interference received, including interference

which may cause undesired operation. Changes or modifications not expressly approved by

Audio-Technica could void your authority to operate this equipment.

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 federal 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.

Attention: Pour prévenir feu ou choc électrique, ne pas exposé l’appareil à la pluie ou à

l’humidité.

1800 Series System Components (Dual-Channel)

All 1800 Series dual-channel systems include:

ATW-R1820 Dual-channel receiver

Two detachable antennas

Two 18” output cables, TA3F to XLRM

Pouch with belt clip (holds receiver)

Hook & loop fastener mount

Each of the three dual-channel camera-mount wireless systems also

includes the following:

ATW-1821 Camera-mount UHF Wireless Microphone System (dual-channel)

with Body-pack Transmitters

Two ATW-T1801 UniPak™ Body-pack Transmitters

Two Omnidirectional Lavalier Microphones

ATW-1822 Camera-mount UHF Wireless Microphone System (dual-channel)

with Plug-on Transmitters

Two ATW-T1802 Plug-on Transmitters

ATW-1823 Camera-mount UHF Wireless Microphone System (dual-channel)

with Plug-on and Body-pack Transmitters

ATW-T1801 UniPak™ Body-pack Transmitter

ATW-T1802 Plug-on Transmitter

Omnidirectional Lavalier Microphone

System Features (Dual-Channel)

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

simultaneous operation of two microphones

•Extremely compact receiver is easy to mount on a camera with included

Velcro-type fastener

•UHF reception with 996 frequencies selectable in 25 kHz steps

•Automatic frequency scanning for easy selection of open channels

•Tone Lock™ squelch system eliminates interference when transmitter is

off (Transmitters are compatible with Advanced Digital Tone Lock™

squelch on Audio-Technica’s 3000 Series UHF Wireless Systems)

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

independently)

•Headphone monitor output with independent level control

•Battery fuel-level indicators on transmitters and receiver

•Soft-touch controls for easy frequency selection

•True Diversity operation for resistance to multi-path interference and

dropouts

•LCD frequency and battery status display with backlight

•Antenna and AF Peak LED indicators

•Easy, user-friendly operation

•Clear, natural sound quality

•Powered by AA batteries

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; they 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 Receiver Battery Installation, page __.) 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, mount the ATW-R1820 Dual-channel Receiver to your camera using the included hook & loop fastener

mount or another accessory bracket (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 callouts, page ___).

Turn the ATW-R1820 Power Switch on. Choose “1” to activate only Receiver Channel 1 (power/peak LED 1

should light red); this option will increase useable battery life. Choose “Both” to activate both receiver

channels (power/peak LEDs 1 and 2 should light red). (See Power Switch with four positions: External, Off,

1, Both callout, page ___.)

Select a frequency for Receiver Channel 1 and Receiver Channel 2. (See Selecting Frequencies on your

Dual-channel Receiver, page ___.)

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 and lavalier microphone: Plug the

included lavalier microphone(s) into the UniPak body-pack transmitter(s) and position microphone(s) on your

subject about six inches below the chin. Anticipate movements that may cause the microphone to rub

against or be covered by clothing, and position the microphone to avoid it. Turn the power on (see

Operating the Transmitter, page ___). Select a frequency and choose other settings. See Operating the

Transmitter and How to Set Frequencies on your Transmitter, page ___.)

IF your system is equipped with a Plug-on Transmitter: Attach a dynamic microphone or a condenser

microphone with an internal battery to the Plug-on Transmitter’s input connector (see Microphone Input,

page, ___). Turn the power on (see Operating the Transmitter, page ___). Select a frequency and choose

other settings. See Operating the Transmitter and How to Set Frequencies on your Transmitter, page ___.)

DUAL-CHANNEL RECEIVER CONTROLS

Front Panel:

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

Switch to select frequencies for Receiver Channel 1 and Receiver Channel 2; in Hold position, only

Receiver Channel 1 frequency appears in LCD.)

Antenna Input Jacks

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.

Diversity Indicators for each antenna for each receiver

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.

Power Switch with four positions: External, Off, 1, Both

Turns the unit on and off.

Choose “External” (far left position), if the unit is connected to an external power supply (12V DC

source, 500 mA nominal current, not included). In “External” position, both receiver channels 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, 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 (indicated by illumination of power/peak LEDs 1

and 2).

Note: Selected receiver will be muted unless Dual-channel Control Switch (to right of Power

Switch) is in Hold position.

Power/Peak LED

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 ….)

Dual-channel Control Switch with three positions: 1, Hold, 2

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 (center 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.

Dual-channel Control LED

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.

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

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

Up/Down Arrows

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

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

Rear Panel:

Output A

BALANCED AUDIO OUTPUT JACK: XLRM-type connector. Pin 1: ground (shield); Pin 2: “audio +”;

Pin 3: “audio –”. A standard 2-conductor shielded cable can be used to connect the receiver output

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

Output B

BALANCED AUDIO OUTPUT JACK: XLRM-type connector. Pin 1: ground (shield); Pin 2: “audio +”;

Pin 3: “audio –”. A standard 2-conductor shielded cable can be used to connect the receiver output

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

Output Select Switch

The rear panel provides two balanced XLR 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.

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 (single-channel operation), 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).

Receiver Level Controls [1and 2]

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.

Monitor Select Switch

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.

Monitor Level Control

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

the right to increase output (turn up the volume).

DC Input

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 “External” position; both receiver channels

are activated (indicated by illumination of power/peak LEDs 1 and 2).

Monitor Output

¼” TRS jack.

Side Access:

Battery Selection

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).

Receiver Battery Installation

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

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

Battery Condition Indicator

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 should light (red light at 1 if Power switch is in position

1; right light at 1 & 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 dead.

The receiver’s “fuel gauge” battery indicator displays a maximum of four bar segments. When

LCD flashes LOW.BAT, the batteries should be replaced immediately to ensure continued

operation.

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.

Selecting Frequencies on your Dual-channel Receiver

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 world “Menu” will

appear.

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

•First arrow up is Manual Frequency Selection Mode;

•second arrow up is Automatic Scan Group 1;

•third arrow up is Automatic Scan Group 2;

•fourth arrow up is Automatic Scan Group 3;

•fifth arrow up is Quit, allowing exit from “Menu” mode.

Dual-channel operation (using two transmitters)

Setting Receiver Frequency Manually

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 25k 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.

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 (center 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.

Using the Automatic Scan Function to Set Receiver Frequency (dual-

channel operation)

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 world “Menu” will

appear.

2. Use the Up or Down arrow to reach Scan 1, Scan 2, or Scan 3. Press the Set button once

to select one of these three Scan groups. The word “SCAN1”, “SCAN2” or “SCAN3” 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 with 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 than 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 (center 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, after completing the first receiver's scan and frequency

selection, set its transmitter to the same frequency (see Setting Transmitter Frequency

instructions on page ); leave the transmitter 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 a frequency 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, the user should 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.

Single-channel operation

Setting Receiver Frequency Manually (for single-channel operation)

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.

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 25k 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 (center

position).

Using the Automatic Scan Function to Set Receiver Frequency

Automatically (for single-channel operation)

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).

1. Press the Set button to enter the Frequency Selection Menu mode; the world “Menu” will

appear.

2. Use the Up or Down arrow to reach Scan 1, Scan 2, or Scan 3. Press the Set button once

to select one of these three Scan groups. The word “SCAN1”, “SCAN2” or “SCAN3” 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 with 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 (center position). The receiver will return to

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

indictor will turn green.

ATW-T1801 UniPak™ Body-pack Transmitter &

ATW-T1802 Plug-on Transmitter Controls

Antenna

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.

Power-on LED

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

LCD Window

The Liquid Crystal Display presents setup and operating information clearly and conveniently). 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.

Audio Input Jack

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 UniPak input connector

(see “Optional System Accessories” ). 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.

Microphone Input

The ATW-T1802 Plug-on Transmitter has a 3-pin XLRF-type input connector with a locking

collar. Use a dynamic microphone, or a condenser mic with an internal battery. To attach the

microphone, rotate the threaded locking collar fully clockwise (“down”) until it reaches the

transmitter housing. Then rotate the collar back “up” one or two turns to expose the microphone

latch. Press the microphone and transmitter together , making certain that the latch “clicks” into the

base of the mic. Pull on the mic to make certain it is latched on the connector. Continue to rotate

the threaded collar “up” until it is firmly against the end of the mic. 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.

Power/Mute Button

For on/off and mute functions.

Up/Down Arrows

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

access transmitter functions.

Set Button

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

access transmitter functions.

Sliding Control Cover (3-position)

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

off or channel-switching.

Sliding Control Cover

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

channel-switching.

Battery Door

Open by sliding the catch down.

Mounting Clip

The 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 (Fig. E) and reinstall it

facing in the opposite direction.

Transmitter Batteries

Battery Selection

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.

Transmitter Battery Installation

1. Open the battery compartment door by sliding the catch down .

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.

Battery Condition Indicator

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

The small power-on LED should light green and the LCD window should come on. If this does not

happen, the batteries are installed incorrectly or they are dead. The transmitter’s “fuel gauge”

battery indicator displays a maximum of four bar segments. When it flashes “LOW.BAT”, the

batteries should be replaced immediately to ensure continued operation. (The receiver also

displays transmitter battery condition in the LCD window with bar segments; the Alert indicator

comes on to warn of a low-battery condition.)

Operating the Transmitter

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