Audio-Technica ATND971a Datasheet

Network Microphones

ATND971a Cardioid Condenser Boundary

™

Microphone with Dante

Network Output

The audio output of the ATND971a can be routed using Audinate’s Dante Controller, which is available for download at the Audinate website (www.audinate.com). The site also provides Dante routing and software instructions.

The microphone is equipped with UniGuard® RFI-shielding technology, which oers outstanding rejection of radio frequency interference (RFI).

The microphone’s cardioid polar pattern provides a 120° angle of acceptance (cardioid in hemisphere above mounting surface). Additional interchangeable elements with omnidirectional (360°) and hypercardioid (100°) pickup patterns are available.

The microphone’s heavy die-cast case and non-slip silicone foam bottom pads minimize coupling of surface vibration to the microphone. The microphone includes a soft protective pouch and features a low-reﬂectance black ﬁnish.

Installation and Operation

The ATND971a is powered by network PoE.

Features

• Connects directly to network via Ethernet cable—no soldering or additional cable required

• Integrated user switch controls talk/mute in Local mode and triggers Danteenabled devices in Remote mode

• Local or remote control of gain, low-cut UniSteep® ﬁlter and red/green LED status indicator

• Powered by network PoE

• Scalable across Dante’s 512 bidirectional audio channels

• Touch-sensitive capacitive-type user switch

• UniGuard® RFI-shielding technology oers outstanding rejection of radio frequency interference (RFI)

• UniSteep® ﬁlter provides a steep low-frequency attenuation to improve sound pickup without aecting voice quality

• Available interchangeable elements permit angle of acceptance from 100° to 360°

• Heavy die-cast case and non-slip silicone foam bottom pads minimize coupling of surface vibration to the microphone

Description

The ATND971a is a Dante-enabled, wide-range condenser microphone with a cardioid polar pattern. It is designed for surface-mount applications such as high-quality sound reinforcement, conferencing, distance learning and other demanding sound pickup applications.

The microphone features a touch-sensitive capacitive-type user switch with integral red/green LED status indicator. In Local mode the user switch mutes and unmutes the microphone. It can be set to toggle between live and muted audio (toggle on/ o), to permit live audio only while the switch is pressed (press to talk), or to mute the audio while the switch is pressed (press to mute). In Remote mode the user switch can be used to trigger functions on compatible Dante-enabled devices, such as a video camera’s pan/tilt or a room’s lighting preset. While in Remote mode the microphone’s audio output is controlled remotely. An integral 80 Hz low-cut UniSteep® ﬁlter provides easy switching from a ﬂat frequency response to a low-end roll-o. The roll-o position reduces the pickup of low-frequency ambient noise (such as trac, air-handling systems, etc.), room reverberation and mechanically coupled vibrations. A three-position input gain level selector permits trim adjustment to accommodate louder and softer voices.

The gain, low-cut UniSteep® ﬁlter and red/green LED status indicator can all be controlled locally or remotely via third-party software.* Recessed buttons on the bottom of the microphone allow user to conﬁgure the microphone settings locally. Audio, low-cut and gain settings can be locked in Local mode by pressing and holding the lock button. This lock will prevent end users from adjusting the settings. Default settings for the microphone are as follows: audio toggle on/o (with audio muted at power up), low-cut ﬁlter o, +30 dB input gain.

The electronics in the microphone take up to 30 seconds to stabilize after power is applied.

The microphone should be placed on a ﬂat, unobstructed mounting surface, with the front of the microphone facing the sound source. The sound source should not be below, or higher than 60° above, the plane of the mounting surface.

The microphone features a touch-sensitive user switch with integral red/green LED status indicator. In Local mode, which is the default, the user switch mutes and unmutes the audio. The Local mode settings for the user switch – as well as the low-cut UniSteep® ﬁlter and input gain level – can be adjusted by pressing the appropriate recessed button on the bottom of the microphone.

The user switch has four Local settings (see User Switch Settings and Functions in Local Mode below) that can be chosen by pressing the button beneath “SWITCH FUNCTION” and “DEFAULT MODE.” The default setting is TOGGLE ON/OFF (with audio muted at power up). Press the button once to change setting to TOGGLE ON/OFF (with audio on at power up). In both settings the user switch will toggle between mute and unmute – the only dierence is the status of the audio when the microphone is turned on. Press the setting button a second time to select MOM. ON (momentary on), wherein the audio will be on only while the user switch is being pressed (press to talk). Press the setting button a third time to select MOM. OFF (momentary o), wherein the audio will be muted while the user switch is being pressed (press to mute). Press the setting button a fourth time to cycle the setting back to the default. The “SWITCH FUNCTION” and “DEFAULT MODE” LEDs will illuminate red or green to indicate the current setting.

Turn the low-cut UniSteep® ﬁlter on and o by pressing the button beneath “LOW CUT” on the bottom of the microphone. The ﬁlter is o by default. The LED above “LOW CUT” illuminates red when the ﬁlter is o, green when it is on.

There are three input gain levels that can be selected: +30 dB (for loudest voices), +40 dB and +50 dB (for softest voices). To adjust the gain level, press the button beneath “GAIN” on the bottom of the microphone. Pressing the button once changes the level from +30 dB to +40 dB, pressing it again changes the level to +50 dB and pressing a third time returns the level to +30 dB. The LED above “GAIN” illuminates green for +30 dB, orange for +40 dB and red for +50 dB.

To lock the Local settings, press and hold the button beneath “LOCK” on the bottom of the microphone. Press and hold again to unlock settings. The LED above “LOCK” will illuminate red when locked and remain unlit when not locked. If a setting button is pressed while the lock is on, the LOCK LED will blink.

60°

IDEAL WORKING ANGLE

ATND971a

110 mm

4.33"

12" or more on axis

LEGEND

Frequency in Hertz

Response in dB

10 dB

100

200

10k

500

20k

Roll-off

All LEDs on the bottom of the microphone will turn o seven seconds after the last button is pressed. Pressing any button will cause the LEDs to relight.

To return the microphone to its default Local settings, press the GAIN and LOW CUT buttons simultaneously.

The microphone can also be controlled remotely via third-party software.* When this software is used it will override local control, causing the audio to remain on and the red/green LED status indicator, low-cut ﬁlter and input gain level to be controlled remotely. In Remote mode the microphone’s user switch can be programmed to trigger functions on compatible Dante-enabled devices. When in remote mode the Remote LED is illuminated.

Avoid leaving the microphone in the open sun or in areas where temperatures exceed 110° F (43° C) for extended periods. Extremely high humidity should also be avoided.

Note: Placing any object on a surface (such as a conference table) before its ﬁnish is fully cured may result in damage to the ﬁnish.

Architect’s and Engineer’s Speciﬁcations

The ATND971a microphone shall be a network-capable, ﬁxed-charge condenser designed for use in surface-mount boundary applications. The output shall be an RJ45 type connection using standard network protocol. It shall have a frequency response of 30 Hz to 20,000 Hz and a cardioid polar pattern. The microphone’s element shall be ﬁeld replaceable; optional interchangeable elements for hypercardioid and omnidirectional polar patterns shall be available. The microphone shall be capable of handling sound input levels up to 120 dB. An 80 Hz “low cut” switch shall be provided to tailor the low-frequency response to minimize pickup of unwanted sounds; it shall be selectable both locally and remotely via third-party software.* There shall be three gain levels: +30 dB, +40 dB, and +50 dB, selectable both locally and remotely via third-party software.* In the Local mode, the device shall function as a standard switch-controlled microphone with muting taking place at the microphone. In the Remote mode, the microphone shall become disengaged from the switching circuit allowing the switch to control external functions over the network.

The microphone shall have a maximum width of 89.5 mm (3.52"), a maximum length of 110.0 mm (4.33") and a maximum height of 35.8 mm (1.41"). Weight shall be 393 g (13.8 oz). The microphone shall be housed in a die-cast case with a perforated steel grille. Finish shall be low-reﬂectance black. The microphone shall include a soft protective pouch.

The microphone shall be capable of driving a Dante audio ﬂow.

The microphone shall accept IEEE802.3af standard PoE as power input. The microphone shall consume less than 1.5W.

The microphone shall be compliant with FCC Part15, CE and RoHS requirements.

Speciﬁcations

Element

Polar pattern

Frequency response

Low frequency roll-o

Maximum input sound level

Signal-to-noise ratio

Power requirements Power consumption

Switches

Weight

Dimensions

Output connector

Dante network

Optional interchangeable elements

Accessory furnished

In the interest of standards development, A.T.U.S. oers full details

1 Pascal = 10 dynes/cm

Typical, A-weighted, using Audio Precision System One.

on its test methods to other industry

professionals on request.

= 10 microbars = 94 dB SPL

Speciﬁcations are subject to change without notice.

frequency response: 30– 20,000 Hz

10 dB

100

200

12" or more on axis Roll-off

500

Frequency in Hertz

10k

20k

LEGEND

Fixed-charge back plate, permanently polarized condenser Half-cardioid (cardioid in hemisphere above mounting surface) 30-20,000 Hz 80 Hz, 18 dB/octave 117 dB SPL, 1 kHz at 1% T.H.D.

68 dB, 1 kHz at 1 Pa PoE IEEE802.3af standard

1.5W Local Mode: Touch-sensitive capacitive-type user switch function: toggle (mute on power up), toggle (talk on power up), momentary on, momentary o; Low-cut ﬁlter: ﬂat, roll-o; Gain: +30 dB, +40 dB, +50 dB Remote Mode: Low-cut and Gain via third-party software* 393 g (13.8 oz)

110.0 mm (4.33") maximum length,

89.5 mm (3.52") maximum width,

35.8 mm (1.41") maximum height RJ45 Physical level: standard Ethernet Connector: single RJ45 Cable quality: Shielded CAT5 or CAT6 recommended Transmission speed: 100 Mbps UE-O omnidirectional (360°) UE-H hypercardioid (100°) Soft protective pouch

Response in dB

polar pattern

270˚

240˚

0˚

30˚

330˚

300˚

210˚

SCALE IS 5 DECIBELS PER DIVISION

150˚

180˚

60˚

90˚

120˚

LEGEND

200 Hz

1 kHz 5 kHz 8 kHz

The Audio-Technica ATND971a is speciﬁed.

*For a list of compatible third-party software consult the ATND971a product proﬁle at Audio-Technica.com.

User Switch Settings and Functions in Local Mode

Control User Switch Mode Switch Function Default Mode

LED Color LED Color

Default Toggle Green Red (mute on power up)

1st Press Toggle Green Green (talk on power up)

2nd Press Press to Talk Red Red 3rd Press Press to Mute Red Green

4.33"

110 mm

1.41"

35.8 mm

DANTE/PoE

89.5 mm

3.52"

Audio-Technica Corporation