MLS 304SA 停产

带立体声音频放大器的 4 路输入 MediaLink® 切换器
主要特性
  • 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
The Extron MLS 304SA
型号 产品说明 产品编号
 MLS 304SA 带立体声音频放大器 60-550-02 停产

该产品已停产。

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
  • 集成的立体声音频放大器在每个通道上为 4 Ω 提供 12 W rms 输出, 为 8 Ω 提供 8 W rms 输出
  • 在绝缘的螺丝端子上输出放大的立体声音频
可选附件
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  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
相似产品
  MLS 100 A 4 路立体声音频输入 MediaLink® 切换器

技术参数

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
    NOTE     0 dBu = 0.775 Vrms, 0 dBV = 1 Vrms, 0 dBV ≈ 2 dBu
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
    NOTE     Unbalanced wired outputs produce 6 dB of attenuation.  Balanced outputs have unity gain/attenuation.
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
   Ambient 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
   Product warranty 3 years parts and labor
    NOTE     All nominal levels are at ±10%.
    NOTE     Specifications are subject to change without notice.
(8.0-041311-D11)

示意图

MLS 304SA System Diagram

面板图

MLS 304SA Panel Drawing