Extron MLS 304MA 和 MLS 304SA MediaLink 切换器是带有集成音频放大器的 4 路输入、多格式有源切换器。两种型号都提供了复合视频、计算机视频和音 频切换，是适用于单投影机教室和会议室的经济型解决方案。每款切换器都 包括两路线路电平音频输出（1 路固定，1 路可变），可以通过 RS-232 配置为 用于单声道或立体声输出。
| 可选附件 | ||
|---|---|---|
| RCAF-BNCM | RCA Female to BNC Male Adapter | |
| MLM-WB+ | 带向下翻转 4U 机架空间的可锁定金属墙盒 | |
| VGA-A M-M MD | 插头对插头 VGA 和音频电缆 - 压铸连接器 | |
| SYM BNCM | 15 针 HD 插头对 BNC 插头微型高分辨率电缆 | |
| SYM BNCF | 15 针 HD 插头对 BNC 插座微型高分辨率电缆 | |
| 安装故事 |
|---|
| EXTRON MLS 304MA, MLS 406和MLS 406MA 在过去的两年里，MediaLink系统已经革命性的改变了人们在小型房间和会议室中控制和操作单台投影机AV系统的方法。灵活的MLC 206 MediaLink控制器加上不断推出的MediaLink切换器（MLS）已经改变了AV系统集成的理念。同时，最新的MLS 304MA,MLS 406和MLS 406MA也被设计成可和MLC 206一起应用于小型和经济型的系统集成。当然，它们也可以作为单独的切换器使用。 输入和输出 ML... |
Extron MLS 304MA 和 MLS 304SA MediaLink 切换器是带有集成音频放大器的 4 路输入、多格式有源切换器。两种型号都提供了复合视频、计算机视频和音 频切换，是适用于单投影机教室和会议室的经济型解决方案。每款切换器都 包括两路线路电平音频输出（1 路固定，1 路可变），可以通过 RS-232 配置为 用于单声道或立体声输出。
特性
280 MHz (-3 dB) RGB 视频带宽
可通过 MediaLink 控制器、前面板按键或 RS-232 进行控制
本地监视器输出
可通过 RS-232 执行音频输入增益和衰减
固定和可变的预放大线路电平音频输出
附加输入可接受平衡/非平衡单声道线路电平音频信号，以便与 4 路可切 换输入中的任何一路混合
响度控制
用于 RGB 延迟的三动作切换
前面板安全锁定
可机架式安装、1U 高、全机架宽的金属外壳
内置式通用电源
集成的单声道音频放大器为 4 或 8 Ω 提供 20 W rms 输出，或为 70/100 V 分配式音频系统提供 16 W rms 输出
在绝缘的螺丝端子上输出放大的单声道音频
示意图
面板图
| MLS 304 Series | |||
| Video | |||
|---|---|---|---|
| Gain | Unity | ||
| Bandwidth | 280 MHz (-3 dB) | ||
| Differential phase error | 1.0° at 3.58 MHz and 4.43 MHz | ||
| Differential gain error | 1.0% at 3.58 MHz and 4.43 MHz | ||
| Crosstalk | -68 dB @ 10 MHz, -39 dB @ 100MHz | ||
| Switching speed | 5 ms (max.) | ||
| Video input and loop through | |||
| Number/signal type | 2 RGBHV, RGBS, RGsB, RsGsBs 1 RGBHV, RGBS, RGsB, RsGsBs local monitor loop-through 2 composite video |
||
| Connectors | 2 female 15-pin HD (RGB), 1 female 15-pin HD (RGB loop-through) 2 female RCA (composite video) |
||
| Nominal level | 1 Vp-p for Y of S-video, and for composite video 0.7 Vp-p for RGB |
||
| Minimum/maximum levels | |||
| RGB | Analog: 0.3 V to 1.5 Vp-p with no offset | ||
| S-video, composite video | Analog: 0.4 V to 2.0 Vp-p with no offset | ||
| Impedance | 75 ohms | ||
| Horizontal frequency | 15 kHz to 145 kHz | ||
| Vertical frequency | 30 Hz to 170 Hz | ||
| Return loss | |||
| RGB | <-40 dB @ 5 MHz | ||
| S-video | <-25 dB, 0 to 10 MHz | ||
| Composite video | <-40 dB, 0 to 10 MHz | ||
| DC offset (max. allowable) | 1.5 V | ||
| Video output | |||
| Number/signal type | 1 RGBHV, RGBS, RGsB, RsGsBs (follows input) 1 composite video |
||
| Connectors | 5 female BNC (RGB) 1 female BNC (composite) |
||
| Nominal level | 1 Vp-p for Y of S-video, and for composite video 0.7 Vp-p for RGB |
||
| Minimum/maximum levels | |||
| RGB | Analog: 0.3 V to 1.5 Vp-p (follows input) | ||
| Composite video | Analog: 0.4 V to 2.0 Vp-p (follows input) | ||
| Impedance | 75 ohms | ||
| Return loss | <-40 dB @ 5 MHz | ||
| DC offset | ±5 mV with input at 0 offset | ||
| Switching type | Triple-Action (RGB delay) | ||
| Sync | |||
| Input type | RGBHV, RGBS, RGsB, RsGsBs | ||
| Output type | RGBHV, RGBS, RGsB, RsGsBs (follows input) | ||
| Standards | NTSC 3.58, NTSC 4.43, PAL, SECAM | ||
| Input level | 2.0 V to 5.0 Vp-p | ||
| Output level | TTL: 5.0 Vp-p, unterminated | ||
| Input impedance | 10k ohms | ||
| Output impedance | 75 ohms | ||
| Max. input voltage | 5.0 Vp-p | ||
| Max. propagation delay | 30 ns | ||
| Max. rise/fall time | 4.0 ns | ||
| Polarity | Positive or negative (follows input) | ||
| Audio | |||
| Gain | Unbalanced output: 0 dB; balanced output: +6 dB | ||
| Frequency response at 1 watt output | |||
| Preamp/Lineout | 20 Hz to 20 kHz, ±0.5 dB | ||
| Direct (4/8 ohm) | 20 Hz to 20 kHz, ±1.0 dB | ||
| Transformer (70 V or 100 V mono amplifier) | |||
| 50 Hz to 20 kHz, +0 dB/-3 dB | |||
| THD + Noise | |||
| Power amp (mono or stereo) | 0.037% @ 1 kHz at nominal level (1 watt, 8 ohm load) | ||
| Preamp | 0.11% @ 1 kHz at nominal level | ||
| Lineout | 0.018% @ 1 kHz at nominal level | ||
| S/N at maximum power output (unweighted) | |||
| Power amp | >75 dB @ 10 Hz to 22 kHz | ||
| Preamp | >80 dB @ 10 Hz to 22 kHz | ||
| Lineout | >80 dB @ 10 Hz to 22 kHz | ||
| Crosstalk | |||
| Power amp | <-75 dB @ 1 kHz, fully loaded | ||
| Preamp | <-75 dB @ 1 kHz, fully loaded | ||
| Lineout | <-80 dB @ 1 kHz, fully loaded | ||
| Stereo channel separation | >80 dB @ 1 kHz | ||
| CMRR | >85 dB @ 20 Hz to 200 Hz, >75 dB @ 20 Hz to 20 kHz | ||
| Bass | ±10 dB @ 100 Hz | ||
| Treble | ±10 dB @ 10 kHz | ||
| Loudness (contour) | +6 dB @ 100 Hz to 10 kHz | ||
| Audio input | |||
| Number/signal type | 4 stereo, unbalanced 1 Aux/Mix balanced/unbalanced mono (nonswitchable) |
||
| Connectors | 2 pairs of female RCA connectors (inputs 1-2) 2 female 3.5 mm mini stereo jacks (unbalanced only) (inputs 3-4); tip (L), ring (R), sleeve (GND) (1) 3.5 mm captive screw connector, 3 pole (Aux/Mix input) |
||
| Impedance | |||
| Aux/Mix input | >18k ohms unbalanced, DC coupled | ||
| All other inputs | >10k ohms unbalanced, DC coupled | ||
| Nominal level | -10 dBV (316 mVrms) | ||
| Input gain adjustment | -42 dB to +24 dB, adjustable per input | ||
|
|||
| Audio output — Lineout and Preamp | |||
| Number/signal type | 2 (1 Lineout/fixed and 1 Preamp/variable) stereo/mono, balanced/unbalanced | ||
| Connectors | (2) 3.5 mm captive screw connectors, 5 pole | ||
| Impedance | 50 ohms unbalanced, 100 ohms balanced | ||
| Gain error | ±0.8 dB channel to channel | ||
| Nominal level | Configurable: -10 dBV (316 mVrms, default), +4 dBu (1.23 Vrms) | ||
| Maximum level (600 ohm) | |||
| Preamp | >+19 dBu, balanced <0.1% THD+N | ||
| Lineout | >+16 dBu, balanced <0.1% THD+N | ||
|
|||
| Audio output — mono power amp (MLS 304MA only) | |||
| Number/signal type | (1) mono | ||
| Connector | (1) 5-position screw terminal | ||
| Sensitivity | -20 dBV (-17.8 dBu; 100 mVrms) (adjustable) for maximum power output | ||
| Power bandwidth | |||
| Direct (4 ohm) | 1 kHz at 4 ohms | ||
| Direct (8 ohm) | 20 Hz to 20 kHz, 0.15% THD | ||
| Transformer (70 V) | 50 Hz to 20 kHz, 1% THD | ||
| Transformer (100 V) | 50 Hz to 20 kHz, 0.5% THD | ||
| Maximum power output | |||
| Direct (4/8 ohm) | 20 watts max. (continuous) | ||
| Transformer (70/100 V) | 16 watts max. (continuous), transformer coupled | ||
| Protection | Input limiting, thermal, short circuit | ||
| Audio output — stereo power amp (MLS 304SA only) | |||
| Number/signal type | (1) stereo (default) or dual mono (configured via software) | ||
| Connector | (1) 5-position screw terminal | ||
| Sensitivity | -20 dBV (-17.8 dBu; 100 mVrms) (adjustable) for maximum power output | ||
| Power bandwidth | |||
| Direct (4 ohm) | 1 kHz at 4 ohms | ||
| Direct (8 ohm) | 20 Hz to 20 kHz, 0.8% THD | ||
| Maximum power output | |||
| Direct (4 ohm) | 24 watts max. (continuous), 12 watts (rms) per channel | ||
| Direct (8 ohm) | 16 watts max. (continuous), 8 watts (rms) per channel | ||
| Protection | Input limiting, thermal, short circuit | ||
| Control/remote — switcher | |||
| Serial control port | RS-232, 3.5 mm captive screw connector, 5 pole (uses 3 poles) | ||
| Baud rate and protocol | 9600, 8-bit, 1 stop bit, no parity | ||
| Serial control pin configuration | 1 = Tx, 2 = Rx, 4 = GND | ||
| Program control | Extron configuration program for Windows ® Extron Simple Instruction Set (SIS ™ ) |
||
| General | |||
| Power | Internal Input: 100-240 VAC, 50-60 Hz, 48 watt power supply |
||
| Temperature/humidity | Storage: -40 to +158 °F (-40 to +70 °C) / 10% to 90%, noncondensing Operating: +32 to +113 °F (0 to +45 °C) / 10% to 90%, noncondensing |
||
| Cooling | Convection, no vents | ||
| Mounting | |||
| Rack mount | Yes, with included brackets | ||
| Enclosure type | Metal | ||
| Enclosure dimensions | 1.75" H x 17.5" W x 8.5" D (1U high, full rack wide) 4.4 cm H x 44.4 cm W x 21.6 cm D (Depth excludes connectors and knob. Width excludes rack ears.) |
||
| Product weight | 6.0 lbs (2.7 kg) | ||
| Shipping weight | 11 lbs (5 kg) | ||
| Vibration | ISTA 1A in carton (International Safe Transit Association) | ||
| Regulatory compliance | |||
| Safety | CE, c-UL, UL | ||
| EMI/EMC | CE, C-tick, FCC Class A, ICES, VCCI | ||
| Warranty | 3 years parts and labor | ||
|
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|
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| (8.0-041311-D11) | |||
| 可选附件 | ||
|---|---|---|
| RCAF-BNCM | RCA Female to BNC Male Adapter | |
| MLM-WB+ | 带向下翻转 4U 机架空间的可锁定金属墙盒 | |
| VGA-A M-M MD | 插头对插头 VGA 和音频电缆 - 压铸连接器 | |
| SYM BNCM | 15 针 HD 插头对 BNC 插头微型高分辨率电缆 | |
| SYM BNCF | 15 针 HD 插头对 BNC 插座微型高分辨率电缆 | |
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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