Audio-Technica AT881TL/RC Manual

Audio-Technica Mikrofon AT881TL/RC

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Description

The AT881TL/RC requires a phantom power supply of 11–52V DC for the element. Output is low-

impedance balanced. The signal appears across the red and yellow wires; audio ground is the

shield connection. Output is phased so that positive acoustic pressure produces positive voltage

on the yellow wire. The small-diameter black and blue wires are the contact closure. The white

wire is the LED control.

The element in the microphone is shock mounted. The Line-cardioid polar pattern of the element

provides a 90°angle of acceptance. The AT881TL/RC is designed with integral wind-screens to

ensure maximum security against wind noise and plosives.

The microphone features a rubber switch, programmable external contact closure and LED

indicator. The microphone's external contact closure capability permits control of remote devices.

The contact closure is configured to operate independently of the microphone element for

applications that require a constant signal from the element. The LED can be controlled from an

external source.

The microphone is enclosed in a sturdy metal housing with a low-reflectance black finish. Its base

is a desk stand that connected with a 1 meter cable permanently attached to microphone. The

blue and black wires of cable used for contact closure is Closed when pressed or Opened when

not pressed. The white wire of cable used for indicator lights red when logic high (+5V DC) and

white when logic low (0V DC).

Avoid leaving the microphone in the open sun or in areas where temperatures exceed 43°C for

extended periods. Extremely high humidity should also be avoided.

Features

• Designed for high-quality sound reinforcement, conferencing, professional recording

and other demanding sound pickup applications.

• Line-cardioid condenser microphone with power module.

• Switch logic output permits control of remote devices from builtin rubber switch.

• Integral, phantom-powered, Red LED indicator.

• Integral windscreens ensure ultimate security against wind noise and plosives.

• Sturdy metal housing design with ball-in-socket base permits flexible positioning.

• Heavy die-cast case and rubber bottom pads minimize coupling of surface vibration to

the microphones.

Specifications

Element Back electret condenser

Polar pattern Line-cardioid (Unidirectional)

Frequency response 20-20,000 Hz

Open circuit sensitivity -31 dB (28.2 mV) re 1V at 1 Pa

Impedance 100 ohms

Maximum input sound level 126 dB SPL, 1 kHz at 1% T.H.D.

Signal-to-noise ratio >69 dB, 1 kHz at 1 Pa

Phantom power requirements 11-52V DC, 2 mA typical

Switch contact closure Closed circuit in switch pressed;

Opened circuit when not pressed

LED input

Maximum input voltage

Red light up when high (+5V DC), Unlit when low (0V DC),

-0.5V to 5.5V

Weight 1.12 kg

Dimensions 214 mm - long,

227 mm - Max. height,

102 mm - Width

Cable 1.0 m long (permanently attached to microphone),

Output connector Unterminated

polar pattern

SCALE IS 5 DECIBELS PER DIVISION

LEGEND

10 dB

20k10k5k2k1k50020010050

LEGEND

frequency response

Frequency in Hertz

Response in dB

12” or more on axis

Audio-Technica Corp. Machida • Tokyo • Japan 2019 OCT FORM No. ATGC-L0371-19-E

mic output:

Black: control ground

White: LED control

Blue: contact closure

Red: cold(-)

Yellow: hot(+)

Shield: audio ground

Optional Accessories:

ATUC-50IU Integration unit for the ATUC-50

conference system

Desktop Line-cardioid Condenser Microphone (with Remote Switching and LED)

AT881TL/RC

说明

AT881TL/RC 的供电模组使用11V 至52V 的幻像供电工作，低阻抗的平衡音

频输出，音频信号以红色和黄色的空接线输出，而光身屏蔽线则为地线

(音频)连接。输出相位将以正相位电平设于黄色的空接线上。黑色和蓝

色空接线为外接开关控制，而白色空接线为 LED 显示灯外接控制。

话筒内配置有超指向的收音头，可以提供90° 收音角度，AT881TL/RC 设有

双网层防风罩，可减低环境噪声及风声。

话筒设有无噪开关，可经外部触点开关控制远程设备，及LED 显示燈。

无噪开关可连接外置器材，能以话筒上的开关作遥距控制。LED 显示灯

亦可设定显示外置器材控制的实际收音状态。

话筒外壳为全金属结构，话筒底部以活动滑珠固定在底座上，可灵活调

校收音位置，并配有减低环境噪声及风声的防风罩。底座接有1 长固米

定式话筒线，黑色和蓝色线为外接开关控制，按下开关保导芯在时维

通；。为状态而在无按下时为断路而白色接线 LED 显示灯外接控制，

接上高电位时(直流+5V)为红色；低电位时(直流0V

)为白色。

把话筒暴露于高温中可能导致输出电平逐渐及永久性减弱，应避免将话

筒留在日晒的地方或长时间置于温度超过43°C的地方，而极高湿度也应

避免。

技术指标

收音头

背板静电型电容式

指向特性

超指向性

频率响应

20-20,000 Hz

开通灵敏度

-31 dB (28.2 mV) 以 1V 于 1 Pa

输出阻抗

100 欧姆

最大承受声压

126 dB 声压, 1 kHz 于 1% T.H.D.

信噪比

>69 dB, 1kHz 于 1 Pa

幻象供电

直流 11-52V, 耗电 2 mA 典型

开关接点控制

按下时保持导通；无按下时为断路

LED输入

最大输入电压

高电位 (直流+5V)亮红灯 /

低电位 (直流0V)关灯；

-0.5V 至 5V

重量

1.22 公斤

外形尺寸

214 mm - 长,

227 mm - 伸至最高点,

102 mm - 宽

连接线

1 )米长 (固定连接式电缆

输出连接

无终端连接

指向特性

声压曲线1刻度5 dB

频率

10 dB

20k10k5k2k1k50020010050

电平

频率特性

频率 (赫兹)

响应电平 (dB)

平直

台式超指向性电容话筒(带开关及LED显示灯)

AT881TL/RC

特性

● 设计于公共广播、会议、专业录音、电视广播及其他特别要求的

收音应用。

● 超指向性收音设计，并提供供电放大器电路。

● 无噪式开关，能经内置开关作远程设备的逻辑控制。

● 整合 L ED 状态显示灯，以幻象供电操作，提供显示。红灯

● 整合了双网层防风罩，可减低环境噪声及风声。

● 话筒以活动滑珠固定在底座上，可将收音头灵活调校到任何位

置，以达到最佳收音效果。

● 压铸成型的底座和橡胶底垫，能减低碰撞平面时产生的敲击声及

震动声。

输出接点

黑色: 控制地线

白色: LED 显示控制

蓝色: 外接开关

红色: 反相位电平

黄色: 正相位电平

屏蔽: 音频地线

选择配件:

ATUC-50IU - 数字会议系统ATUC-50的嵌

入式单元。

FORM No. ATGC-L0371-19-CAudio-Technica Corp. Machida • Tokyo • Japan 2019 OCT

Produkt Specifikationer

Mærke:	Audio-Technica
Kategori:	Mikrofon
Model:	AT881TL/RC

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