Extron MDA 3A 是一款紧凑的 1 路输入、3 路输出立体声音频分配放大器。它通过一个螺丝锁定器接收平衡或非平衡音频，并通过三个螺丝锁定器将放大的音频信号输出至 45 m (150') 远的距离。
MDA 3A 可安装在机架或桌下，并随附一个外置电源。它小巧的尺寸能轻松地安装在新的和已有的视音频系统，包括董事会议室、培训中心、家庭剧院、指挥控制中心和舞台租赁等环境。
特性
接受并分配平衡或非平衡线路电平立体声音频
用于保持单一增益的音频输出增益拔码开关
可机架安装的 1U 高、1/4 机架宽的金属外壳
可安装在机架、桌下和投影机上，每个机架能安装 4 个
随附外置 Extron Everlast™ 电源，产品编号 #70-1175-01 — 该全球通用型电源具有经验证的高可靠性和低功耗，能够降低运行成本
Extron Everlast 电源可享受 7 年部件及人工保修
Extron MDA 3A 是一款紧凑的 1 路输入、3 路输出立体声音频分配放大器。它通过一个螺丝锁定器接收平衡或非平衡音频，并通过三个螺丝锁定器将放大的音频信号输出至 45 m (150') 远的距离。
| 快速参考 |
|---|
| Everlast 电源 (宣传册) |
| 可选附件 | ||
|---|---|---|
| RSU 129 | 用于 9.5" 深产品的通用型机架搁板套件 | |
| RSB 129 | Basic Rack Shelf for 9.5" Deep Products | |
| MBU 123 | 用于 1/8、1/4 和 1/2 机架宽产品的薄型安装套件 | |
| RSF 123 | 用于 3.5" 深产品的机架搁板套件 | |
| PMK 100 | 用于 1/4 机架宽产品的杆式安装套件 | |
| 安装故事 |
|---|
| Big Al's - Not Your Typical Bowling Alley Billed as the next generation in family entertainment, Big Al's in Vancouver, Washington, boasts more than 60,000 square feet of family-oriented fun. Big Al's features 30 traditional bowling lanes, 12 lounge-style bowling lanes, five private party rooms, a lounge, a 4,000 square foot arcade, and a sports bar. The experience in each space is enhanced with dynamic audio and video systems... |
示意图
面板图
| MDA Series | |||
| Video | |||
|---|---|---|---|
| Gain | Unity | ||
| Bandwidth | 400 MHz (-3 dB) | ||
| Video input | |||
| Number/signal type | |||
| MDA 3V/3AV, MDA 5V | 1 composite video | ||
| MDA 3V Dual | 2 composite video | ||
| Connectors | |||
| MDA 3V/3AV, MDA 5V | 1 female BNC | ||
| MDA 3V Dual | 2 female BNC | ||
| Nominal level | 1 Vp-p | ||
| Minimum/maximum levels | 0.4 V to 2.0 Vp-p with no offset | ||
| Impedance | 75 ohms | ||
| Return loss | <-27 dB @ 5 MHz | ||
| DC offset (max. allowable) | 5.0 V | ||
| Input coupling | AC | ||
| Video output | |||
| Number/signal type | |||
| MDA 3V/3AV | 3 buffered composite video | ||
| MDA 3V Dual | 2 x 3 buffered composite video | ||
| MDA 5V | 6 composite video: 5 buffered for distribution, 1 passive loop-through | ||
| Connectors | |||
| MDA 3V/3AV | 3 female BNC | ||
| MDA 3V Dual | 6 female BNC | ||
| MDA 5V | 6 female BNC | ||
| Nominal level | 1 Vp-p | ||
| Minimum/maximum levels | 0.4 V to 2.0 Vp-p, follows input | ||
| Impedance | 75 ohms | ||
| Return loss | <-30 dB @ 5 MHz | ||
| DC offset | ±50 mV with input at 0 offset | ||
| Sync | |||
| Standards | NTSC 3.58, NTSC 4.43, PAL, SECAM | ||
| Audio — MDA 3AV, MDA 3A/3A RCA, MDA 5A RCA | |||
| Gain |  |
||
| Frequency response | 20 Hz to 20 kHz, ±0.05 dB | ||
| THD + Noise | 0.03% @ 1 kHz at nominal level | ||
| S/N | |||
| MDA 3A/5A RCA | >90 dB, unbalanced, at maximum output | ||
| All other models w/audio | >90 dB, balanced at maximum output | ||
| Stereo channel separation | >80 dB @ 1 kHz; >60 dB @ 20 kHz | ||
| CMRR | >75 dB @ 20 Hz to 20 kHz | ||
| Audio input — MDA 3AV, MDA 3A/3A RCA, MDA 5A RCA | |||
| Number/signal type | |||
| MDA 3A RCA, MDA 5A RCA | 1 stereo unbalanced | ||
| MDA 3AV, MDA 3A | 1 stereo balanced/unbalanced | ||
| Connectors | |||
| MDA 3A RCA, MDA 5A RCA | 2 RCA connectors | ||
| MDA 3AV, MDA 3A | (1) 3.5 mm captive screw connector, 5 pole | ||
| Impedance | |||
| MDA 3A RCA, MDA 5A RCA | >10k ohms unbalanced, DC coupled | ||
| MDA 3AV, MDA 3A | >50k ohms unbalanced, >25k ohms balanced, DC coupled | ||
| Nominal level | +4 dBu (1.23V), 0 dBu (0.775 V), -10 dBV (316 mV), -20 dBV (100 mV) compatible | ||
| Maximum level | |||
| MDA 3A/5A RCA | +17 dBu (unbalanced) at 1%THD+N | ||
| All other models w/audio | +24 dBu (balanced) at 1%THD+N | ||
|
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| Audio output — MDA 3AV, MDA 3A/3A RCA, MDA 5A RCA | |||
| Number/signal type | |||
| MDA 5A RCA | 5 stereo, unbalanced | ||
| MDA 3A RCA | 3 stereo, unbalanced | ||
| MDA 3AV, MDA 3A | 3 stereo, balanced/unbalanced | ||
| Connectors | |||
| MDA 5A RCA | 10 RCA connectors | ||
| MDA 3A RCA | 6 RCA connectors | ||
| MDA 3AV, MDA 3A | (3) 3.5 mm captive screw connectors, 5 pole | ||
| Impedance | |||
| MDA 3A RCA, MDA 5A RCA | 50 ohms unbalanced | ||
| MDA 3AV, MDA 3A | 50 ohms unbalanced, 100 ohms balanced | ||
| Gain error | ±0.1 dB channel to channel | ||
| Maximum level (Hi-Z) | |||
| MDA 3A/5A RCA | +15 dBV, unbalanced, at 1%THD+N | ||
| All other models w/audio | >+24 dBu, balanced at 1%THD+N | ||
| Maximum level (600 ohm) | |||
| MDA 3A/5A RCA | >+14 dBm, unbalanced, at 1%THD+N | ||
| All other models w/audio | >+15 dBm, balanced or unbalanced, at 1%THD+N | ||
| General | |||
| Power supply | External Input: 100-240 VAC, 50-60 Hz Output: 12 VDC, 0.5A,6 watts |
||
| Power input requirements | |||
| MDA 3V, MDA 5V | 12 VDC, 0.1 A (max.) | ||
| MDA 3AV | 12 VDC, 0.3 A (max.) | ||
| All other models | 12 VDC, 0.2 A (max.) | ||
| Temperature/humidity | Storage: -40 to +158 °F (-40 to +70 °C) / 10% to 90%, noncondensing Operating: +32 to +122 °F (0 to +50 °C) / 10% to 90%, noncondensing |
||
| Cooling | Convection, no vents | ||
| Mounting | |||
| Rack mount | Yes, with optional 1U rack shelf | ||
| Furniture mount | Yes,with optional mini under-desk mount kit | ||
| Pole mount | Yes, with optional projector pole mount kit | ||
| Enclosure type | Metal | ||
| Enclosure dimensions | 1.7" H x 4.3" W x 3.0" D (1U high, quarter rack wide) (4.2 cm H x 11.0 cm W x 7.6 cm D) (Depth excludes connectors and knobs.) |
||
| Product weight | |||
| MDA 3V | 0.4 lbs (0.2 kg) | ||
| MDA 3V Dual | 0.7 lbs (0.3 kg) | ||
| MDA 3AV | 0.6 lbs (0.3 kg) | ||
| MDA 5V | 0.5 lbs (0.2 kg) | ||
| MDA 3A | 0.5 lbs (0.2 kg) | ||
| MDA 3A/5A RCA | 0.4 lbs (0.2 kg) | ||
| Vibration | ISTA 1A in carton (International Safe Transit Association) | ||
| Regulatory compliance | CE, c-UL UL, CE, C-tick, FCC Class A, ICES, VCCI, Complies with the appropriate requirements of RoHS, WEEE |
||
| Product warranty | 3 years parts and labor | ||
| Everlast power supply warranty | 7 years parts and labor | ||
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| (4475-101518-D17) | |||
| 可选附件 | ||
|---|---|---|
| RSU 129 | 用于 9.5" 深产品的通用型机架搁板套件 | |
| RSB 129 | Basic Rack Shelf for 9.5" Deep Products | |
| MBU 123 | 用于 1/8、1/4 和 1/2 机架宽产品的薄型安装套件 | |
| RSF 123 | 用于 3.5" 深产品的机架搁板套件 | |
| PMK 100 | 用于 1/4 机架宽产品的杆式安装套件 | |
中国上海市松江区茸华路 686 号
(联系就说在DAV音视工程网上看到的)
Sales-China@Extron.com
021-3760 1566
爱思创电子（上海）有限公司（爱思创Extron中国）全球总部位于美国加州，是世界领先的专业视音频系统集成产品的生产商。爱思创Extron产品主要包括视音频控制系统、计算机视频接口、切换器、矩阵切换器、分配放大器、音频放大器、扬声器、双绞线和光纤设备、视频图像解析度转换器、视音频信号处理器、视音频流媒体产品、教室声场系统及高分辨率电缆。爱思创Extron电子提供专业视音频工程、培训、设计、演示支持。
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