Audio-Technica AT881TH/RC Manual

Audio-Technica Mikrofon AT881TH/RC

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Description
The AT881TH/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 Hypercardioid polar pattern of the elements
provides a 100°angle of acceptance. The AT881TH/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 quality sound reinforcement in demanding situations, conferencing,
especially those requiring separate miking for PA and broadcast.
• Hypercardioid 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.
• Small-diameter rigid-pipe design with pivoting 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 Hypercardioid (Unidirectional)
Frequency response 20-20,000 Hz
Open circuit sensitivity -35 dB (17.8 mV) re 1V at 1 Pa
Impedance 100 ohms
Maximum input sound level 130 dB SPL, 1 kHz at 1% T.H.D.
Signal-to-noise ratio >66 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 1.09 kg
Dimensions 354 mm - Max. long,
345 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-L0372-19-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 Hypercardioid Condenser Microphone (with Remote Switching and LED)
AT881TH/RC
说明
AT881TH/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。
话筒内配置有超心形指向性的收音头，各可以提供1 0 0 ° 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
超心形指向性
频率响应
20-20,000 Hz
开通灵敏度
-35 dB (17.8 mV) 以 1V 于 1 Pa
输出阻抗
100 欧姆
最大承受声压
130 dB 声压, 1 kHz 于 1% T.H.D.
信噪比
>66 dB, 1kHz 于 1 Pa
幻象供电
直流 11-52V, 耗电 2 mA 典型
开关
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
1.09 公斤
外形尺寸
354 mm - 伸至最长,
345 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
台式超心形指向性电容话筒(带开关及LED显示灯)
AT881TH/RC
特性
● 设计于公共广播、会议、电视广播及其他特别要求的收音应用。
● 超心形指向性收音设计，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。
● 话筒以曲管式设计，底部以活动滑珠固定在底座上，可灵活调
校收音位置，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-L0372-19-CAudio-Technica Corp. Machida • Tokyo • Japan 2019 OCT

Produkt Specifikationer

Mærke: Audio-Technica
Kategori: Mikrofon
Model: AT881TH/RC

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