Audio Technica BROADCAST & PRODUCTION BP28 User manual

User Manual
Line + Gradient Large Diaphragm Condenser Microphone BP28 / BP28L
■Features
■Notes on use
■Connection procedure
This product requires 48 V
DC phantom power.
Output terminals
PIN1 (ground)
PIN3
(cold)
PIN2 (hot)
■Specifications
Fixed-charge back plate, permanently polarized condenser
Line + gradient
BP28: 20-19,000 Hz,
80 Hz, 18 dB/octave
•1 Pascal = 10 dynes/cm2 = 10 microbars = 94 dB SPL
■Polarpattern ■Frequency response
Audio-Technica Corporation
2-46-1 Nishi-naruse, Machida, Tokyo 194-8666, Japan
©2017 Audio-Technica Corporation
Global Support Contact: www.at-globalsupport.com
27-MAY-2019 Form No.ATGC-L0364-19
LEGEND
0°, 50cm
SCALE IS 5 DECIBELS PER DIVISION
LEGEND
200 Hz
1 kHz
5 kHz
8 kHz
Thank you for purchasing this product. Before using the product, read through the
user manual to ensure that you will use the product correctly.
Please keep this manual for future reference.
The BP28 and BP28L require 11V to 52V phantom power for operation, which may be
provided by a mixer or console, or by a separate, in-line source such as the
Audio-Technica AT8801 single-channel or AT8506 four-channel phantom power
supplies.
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.
Connect the output terminals of the microphone to a device that has a microphone
input (balanced input) compatible with a phantom power supply. The output
connector is an XLRM-type with polarity as shown in the figure below.
For product improvement, the product is sublect to modification without notice.
• Large-diaphragm condenser element and optimized circuitry deliver exceptional
low-noise performance – ideal for film/TV production and broadcasting applica-
tions
• Overall length of 354.9 mm with a highly directional pickup pattern (BP28)
• Overall length of 567.9 mm with an extremely narrow, highly directional pickup
pattern (BP28L)
• Transformer-coupled output provides smooth sonic character
• Extremely high sensitivity (BP28: -28 dBV / BP28L: -23 dBV), wide dynamic range
(135 dB), and high-SPL capability (BP28: 143 dB / BP28L: 138 dB)
• Flat frequency response for accurate sound reproduction
• Rugged housing made of lightweight, structural-grade aluminum alloy
• Switchable 80 Hz high-pass filter and 10 dB pad
• Patented acoustic port design maintains directionality across the entire frequency
range
■Safety precaution
■Cautions for the product
Although this product was designed to be used safely, failing to use it correctly may
result in an accident. To ensure safety, observe all warnings and cautions while using
the product.
• Do not subject the product to strong impact to avoid malfunction.
• Do not disassemble, modify or attempt to repair the product.
• Do not handle the product with wet hands to avoid electric shock or injury.
• Do not store the product under direct sunlight, near heating devices or in a hot, humid
or dusty place.
Element
Polar pattern
Frequency response
Low cut
Roll-off
BP28
BP28L
BP28L: 20-20,000 Hz
BP28: -28 dB(39.8 mV) (0 dB=1 V/Pa, 1 kHz)
250 ohms
BP28: 143 dB SPL (1 kHz at 1% THD), 153 dB SPL (on pad)
135 dB (1 kHz at Max SPL)
BP28: 86 dB (1 kHz at 1 Pa, A-weighted)
11-52 V DC, 3.4 mA
Low cut: on/off , Pad: on/off
28.0 mm maximum body diameter
BP28: 354.9 mm long / BP28L: 567.9 mm long,
Integral 3-pin XLRM-type
Open circuit sensitivity
Impedance
Maximum input sound level
Dynamic range (typical)
Signal-to-noise ratio
Phantom power requirements
Switch
Dimensions
Output connector
Audio-Technica case style BP28: SG6,
BP28: 223 gWeight
BP28L: 313 g
Included accessories Windscreen (BP28:AT8170/BP28L:AT8169),
BP28L: SG7
holder(AT8470), stand adapter (3/8”-5/8”),
carry case
-10 dBPad
BP28L: -23 dB(70.8 mV) (0 dB=1 V/Pa, 1 kHz)
BP28L: 138 dB SPL (1 kHz at 1% THD), 148 dB SPL (on pad)
BP28: 8 dB SPL (A-weighted)Noise
BP28L: 3 dB SPL (A-weighted)
BP28L: 91 dB (1 kHz at 1 Pa, A-weighted)
180°
150°
120°
30°
0°
330°
300°
270°
240°
210°
60°
90°
10 dB
1k 10k 100k10010
Response in dB
10
0
-10
-20
-30
20
Frequency in Hertz

超指向大口径振模电容式话筒BP28 / BP28L
本产品使用直流48V幻象电源。输出端子针脚1（接地）针脚3（负）针脚2（正）■规格• 1帕＝ 10达因/平方厘米＝ 10微巴＝ 94 dB SPL因产品改进，本产品会随时改装，恕不另行通知。■指向性■频率响应Audio-Technica Corporation
2-46-1 Nishi-naruse, Machida, Tokyo 194-8666, Japan
©2017 Audio-Technica Corporation
全球支持联系：www.at-globalsupport.com
响应单位是dB
频率单位是赫兹图例0°，50 厘米比例是每分隔线 5 分贝图例
200赫兹1千赫兹5千赫兹8千赫兹
用戶手冊感谢您购买本产品。在使用产品之前，请全文浏览本用户手册以确保您将正确地使用本产品。请妥善保存本手册，以供将来参考。■产品特点• 采用大口径振膜电容式元件以及最佳化电路设计，提供卓越的低噪音性能，最适合电影 / 电视制作与广播应用• BP28 全长 354.9 mm，具有高度指向性收音特性 • BP28L 全长 567.9 mm，具有超窄、高度指向性收音特性• 采用变压耦合输出电路，呈现出平滑的音色，并保持恒定负荷输出阻抗，确保话筒与话筒前置放大器之间的稳定关系• BP28 具有高灵敏度 (-28 dBV)、宽动态范围 (135 dB) 以及高声压级特性 (138 dB)• BP28L 具有更高灵敏度 (-23 dBV)、宽动态范围 (135 dB) 以及高声压级特性(138 dB)• 平坦频率响应，能够清晰重现声音
• 坚固的外壳采用轻量型、结构级铝合金制成• 可切换式80 Hz 高通滤波开关与10 dB 衰减开关• 采用声学端口专利设计，在整个频率范围内保持一致的指向性■使用注意事项BP28 和 BP28L 需要以11V 至 52V 幻象供电工作，可使用专业调音台上的幻象电源，也可以使用鐵三角的AT8801单通道或AT8506四通道幻象电源供电器作独立供电。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。■连接步骤将话筒的输出端子连接到具有兼容幻象电源的话筒输入（平衡输入）的设备。输出接口是XLRM 型接口，其极性如下图所示。27-MAY-2019 Form No.ATGC-L0364-19
■安全预防措施■本产品注意事项虽然本产品采用安全设计，但使用不当仍可能发生事故。为了确保安全，使用本产品时请注意全部警告和提醒。• 切勿让本产品遭受强烈冲击，以避免发生故障。 • 切勿拆开、改装或尝试维修本产品。• 切勿用湿手握持本产品，以免触电或受伤。 • 切勿将本产品存放在阳光直射的地方、加热装置附近或者炎热、潮湿或多尘的地方。高通滤波BP28
BP28L
180°
150°
120°
30°
0°
330°
300°
270°
240°
210°
60°
90° 10 dB
1k 10k 100k10010
10
0
-10
-20
-30
20
固定充电背板，永久极化电容体线性指向BP28: 20-19,000 Hz,80 Hz，18 dB/倍频程元件指向性频率响应低截BP28L: 20-20,000 HzBP28: -28 dB(39.8 mV) (0 dB=1 V/Pa, 1 kHz)250 欧姆
BP28: 143 dB SPL (1 kHz 于 1% THD), 153 dB SPL (衰减打开)
135 dB (1 kHz 于最大声压级)BP28: 86 dB (1 kHz 于 1 Pa, A 计权)直流11 V至52 V，3.4 mA低截：开/关，衰减：开/关筒身最大直径 28.0 mmBP28: 354.9 mm 长 / BP28L: 567.9 mm 长,一体式3针XLR-M型开路灵敏度阻抗最大输入声压级动态范围信噪比幻象供电开关尺寸输出接口铁三角外壳样式BP28: SG6,BP28: 223 克重量BP28L: 313 克附带配件防风罩 (BP28:AT8170/BP28L:AT8169),BP28L: SG7AT8470支架, 底座配接器 (3/8”-5/8”),便携保护包-10 dB衰减BP28L: -23 dB(70.8 mV) (0 dB=1 V/Pa, 1 kHz)
BP28L: 138 dB SPL (1 kHz 于 1% THD), 148 dB SPL (衰减打开)
BP28: 8 dB SPL (A 计权)噪音BP28L: 3 dB SPL (A 计权)BP28L: 91 dB (1 kHz 于 1 Pa, A 计权)