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BRUKSANVISNING U857RL Audio-Technica
CARDIOID CONDENSER ADAPTER-MOUNT GOOSECK MICROPHONE
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Black adjustable microphone with flanged neck and threaded body (no text or symbols visible)- Designed for high-quality sound reinforcement, professional recording and broadcasting.
- Superior off-axis rejection for maximum gain before feedback.
- UniGuard™ RFI-shielding technology offers outstanding rejection of radio frequency interference (RFI).
- Easy-to-adjust, rugged, small-dimeter, alternating gooseneck with virtually no “memory” permits quick positioning into desired shape.
- UniSteep ^® filter provides a steep low-frequency attenuation to improve sound pickup without affecting voice quality.
- Accepts interchangeable elements to permit angle of acceptance from 90^ to 360^ .
- Two-stage foam windscreen yields dramatically improved resistance to P-pops and other breath blasts.
- Direct mounts to any 58 "-27 stand, or to included threaded mounting flange.
The U857R stands 305mm from the table or podium, it is also available in a 421mm version as U857RL. The two models are identical in all other respects.
The microphone requires 11V to 52V DC phantom power for operation.
Output from the power module's XLRM-type connector is low impedance (Lo-Z) balanced. The signal appears across Pins 2 and 3; Pin 1 is ground (shield). Output phase is "Pin 2 hot" - positive acoustic pressure produces positive voltage at Pin 2.
At integral 80 Hz high-pass UniSteep ^® filter provides easy switching from a flat frequency response to a low-end roll-off. The roll-off position reduces the microphone's sensitivity to popping in close vocal use. It also reduces the pickup of low-frequency ambient noise (such as traffic, air-handling systems, etc.), room reverberation and mechanically coupled vibrations.
The microphone features a 3m permanently attached miniature cable. It connects to provided AT8538 power module via a special TA3F-type connector designed to optimize RFI immunity.
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.
SPECIFICATIONS
| ELEMENT | Fixed-charge back plate permanently polarized condenser |
| POLAR PATTERN | Cardioid |
| FREQUENCY RESPONSE | 30-20,000 Hz |
| LOW FREQUENCY ROLL-OFF | 80 Hz, 18 dB/octave |
| OPEN CIRCUIT SENSITIVITY | -39 dB (11.2 mV) re 1V at 1 Pa |
| IMPEDANCE | 250 ohms |
| MAXIMUM INPUT SOUND LEVEL | 139 dB SPL, 1 kHz at 1% T.H.D. |
| DYNAMIC RANGE (TYPICAL) | 115 dB, 1 kHz at Max SPL |
| SIGNAL-TO-NOISE RATIO | 70 dB, 1 kHz at 1 Pa |
| PHANTOM POWER REQUIREMENTS | 11-52V DC, 2 mA typical |
| SWITCH | Flat, roll-off |
| WEIGHT U857R | 124 g |
| U857RL | 131 g |
| POWER MODULE | 81 g |
| DIMENSIONS U857R | 305 mm - long |
| U857RL | 421 mm - long, |
| BOTH | 12.2 mm - head diameter |
| POWER MODULE | 92.9 mm - long, 18.9 mm - diameter |
| OUTPUT CONNECTOR | Integral 3-pin XLRM-type |
| CABLE | 3m long, 3.2mm diameter, 2-conductor shielded cable with TA3F-type connector |
| OPTIONAL INTERCHANGEABLE ELEMENTS | UE-C cardioid (120°)UE-H hypercardioid (100°)UE-O omnidirectional (360°)UE-UL UniLineTM (90°) |
| ACCESSORIES FURNISHED | AT8538 power module; AT8153 two-stage foam windscreen Cable |
radar
| Angle | Scale (Hz) | |-------|------------| | 0° | 200 Hz | | 45° | 1 kHz | | 90° | 3 kHz | | 135° | 1 kHz | | 180° | 3 kHz | | 225° | 1 kHz | | 270° | 3 kHz | | 315° | 1 kHz | | 360° | 3 kHz | | 405° | 1 kHz | | 450° | 3 kHz | | 505° | 1 kHz | | 550° | 3 kHz | | 605° | 1 kHz | | 650° | 3 kHz | | 705° | 1 kHz | | 750° | 3 kHz | | 805° | 1 kHz | | 850° | 3 kHz | | 905° | 1 kHz | | 950° | 3 kHz | | 1005° | 1 kHz | | 1050° | 3 kHz | | 1105° | 1 kHz | | 1150° | 3 kHz | | 1205° | 1 kHz | | 1250° | 3 kHz | | 1305° | 1 kHz | | 1350° | 3 kHz | | 1405° | 1 kHz | | 1450° | 3 kHz | | 1505° | 1 kHz | | 1550° | 3 kHz | | 1605° | 1 kHz | | 1650° | 3 kHz | | 1705° | 1 kHz | | 1750° | 3 kHz | | 1805° | 1 kHz | | 1850° | 3 kHz | | 1905° | 1 kHz | | 1950° | 3 kHz | | 2005° | 1 kHz | | 2050° | 3 kHz | | Note: The scale is in dB (decibels per division). The data is presented in a grid format with 'GHz' as the index of the data series. There is only one data series in this representation. The values are estimated based on the provided code.Optional Accessories:
AT8601 Desk stand.
AT8614 Desk stand with thru-hole.
AT8506 four-channel 48V phantom power supply (AC powered).
AT8801/EU single-channel 48V phantom power supply (AC powered).
line
| Frequency (Hz) | 12-bit binary state (dB) | Rectifier (dB) | | -------------- | ------------------------ | ------------- | | 0 | ~0 | ~0 | | 10 | ~0.5 | ~0.3 | | 20 | ~0.8 | ~0.6 | | 30 | ~0.9 | ~0.7 | | 40 | ~0.95 | ~0.75 | | 50 | ~0.98 | ~0.78 | | 60 | ~0.99 | ~0.79 | | 70 | ~0.995 | ~0.795 | | 80 | ~0.998 | ~0.798 | | 90 | ~0.999 | ~0.799 | | 100 | ~1.0 | ~0.8 | | 20k | ~1.0 | ~0.8 | | 10k | ~1.0 | ~0.8 | | 5k | ~1.0 | ~0.8 | | 2k | ~1.0 | ~0.8 | | 1k | ~1.0 | ~0.8 | | 0 | ~1.0 | ~0.8 |
audio-technica®
Machida • Tokyo • Japan
心形指向性 螺帽安装式
专业型鹅颈式会议话筒
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Black adjustable microphone with flared neck and bulb (no text or symbols visible)- 设计于高质量收音、专业录音、电视广播、会议等高要求的收音应用。
- 良好的隔音设计，在最大增益时仍能避免啸叫声的出现。
- UniGuard™ - 射频干扰(RFI)屏蔽技术，提供杰出的防止射频干扰能力，避免收音时受到如手提电话等的干扰。
- 易于调节、耐用、细小、可反覆摆动而没有“记忆”效果的鹅颈弯曲结构，可快速及随意地把话筒收音头固定在合适的位置。
- UniSteep ^® - 高通滤波器，提供了一个高效能的高通滤波，把低频噪声作出衰减而无损话音的收音质量。
- 更换式的收音头设计，可选配适合的收音头配合实际的应用，收音角度可由90°至360°。
- 附有双层式防风海棉罩，可减低在讲话时收到不雅的喷气声及其他风声的情况出现。
- 螺帽安装设计，可直接把话筒安装在任何%"-27的话筒架或配合螺环附件安装于桌面上。
U857R 全长为305mm，可安装在桌面或话筒架上使用。另外，U857RL 全长为421mm，而两个型号的其他细节均相同。
话筒只需使用直流11V至52V幻象供电操作。
低阻抗的平衡音频输出，音频信号以卡农公头的2号及3号针脚输出，而1号针脚则为地线(屏蔽)连接。输出相位将以正相位电平设于2号针脚上。
内置高质量 UniSteep ^® 高通滤波电路，可轻易由平直的频率响应，开启为于80 Hz以下衰减的收音效果，应高通滤波器可减低话筒在近距离讲话收音时的喷气声，并可减低收音环境中低频噪声(如外间汽车引擎声，空调系统的风声等)，房间中的回声及机械性的震动声。
话筒配置3m长的固定式连接线，以防射频干扰的TA3F插头连接于AT8538供电器上。
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℃的地方，而极高湿度也应避免。
技术指标
| 收音头 | 固定充电背板,静电型电容式 | |
| 指向特性 | 心形单指向性 | |
| 频率响应 | 30-20,000 Hz | |
| 高通滤波 | 80 Hz, 18 dB/octave | |
| 开通灵敏度 | -39 dB (11.2 mV) 以 1V 于 1 Pa | |
| 输出阻抗 | 250 欧姆 | |
| 最大承受声压 | 139 dB 声压, 1 kHz 于 1% T.H.D. | |
| 动态范围(典型) | 115 dB, 1 kHz 于最高声压 | |
| 讯噪比 | 70 dB, 1 kHz 于 1 Pa | |
| 幻象供电 | 直流 11-52V, 耗电 2 mA 典型 | |
| 开关 | 平直, 高通滤波 | |
| 重量 | U857R | 124 克 |
| U857RL | 131 克 | |
| 供电模组 | 81 克 | |
| 外形尺寸 | U857R | 305 mm - 长 |
| U857RL | 421 mm - 长,12.2 mm - 收音头直径92.9 mm - 长 x 18.9 mm 直径 | |
| 共同为供电模组 | ||
| 输出连接器 | 内置式3针卡农公头 | |
| 连接线 | 3m 长, 3.2 mm 直径连接线,2芯线连屏蔽电线,以TA3F插头连接 | |
| 可转换收音头 | UE-C 心形指向 (120°)UE-H 超心形指向 (100°)UE-O 全方向性 (360°)UE-UL UniLineTM 超指向性 (90°) | |
| 附属品 | AT8538 供电模组AT8153 双层式防风海棉罩连接线 | |
line
| 频率 | 电压 (dB) | | ---- | --------- | | 200 Hz | ~10 | | 1 kHz | ~10 | | 2 kHz | ~10 | | 3 kHz | ~10 |
audio-technica
鐵三角
Machida • Tokyo • Japan