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Extron MLS 304MA
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Extron MLS 304MA

Four Input MediaLink¢â Switcher with Mono Audio Amplifier

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HDKOREA 5069 SW 4SVA RCA 1,080,000¿ø extron
HDKOREA 5062 Extron MLS 100 A 684,000¿ø Extron
HDKOREA 5094 SW 8A 1,380,000¿ø extron

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¡Ü Description

The Extron MLS 304MA MediaLink¢â Switcher is a simple-to-use, four input, multi-format active switcher. As an economical solution for single-projector classrooms and boardrooms, it provides composite video, computer-video, and audio switching. For audio, the switcher includes two line level outputs (one fixed and one variable) that can be configured for mono or stereo output via RS-232. It also features a 20-watt (rms) integrated mono amplifier for 4 or 8 ohm or 16 watts (rms) for 70/100 volt distributed audio systems that can also be controlled via RS-232. The MLS 304MA provides two inputs for composite video with stereo audio on RCA connectors and two inputs for computer-video with stereo audio on 15-pin HD and 3.5 mm stereo mini jacks. Inputs three and four are configurable for computer-video, as well as composite video via RS-232 using an Extron 15-pin HD to BNC-5 Female cable assembly. The switcher is equipped with dual RGB outputs on five BNC connectors and a 15-pin HD connector that outputs RGB video independently or simultaneously. The 15-pin HD output connector can display switched RGB inputs or function as a buffered loop-through for a local monitor, eliminating the need for a distribution amplifier. MediaLink Switchers are designed to be used in conjunction with a MediaLink Controller to facilitate low-cost integration. They can also be used as stand-alone switchers.




¡Ü Features
  • Bandwidth – 280 MHz (-3 dB) RGB video bandwidth maintains signal integrity.
  • Video inputs – Two female RCA connectors are for composite video and two female 15-pin HD connectors are for computer-video or composite video.
  • Video outputs – The MLS 304MA provides dual RGB output on five BNC connectors and a female 15-pin HD connector. The 15-pin HD can also be utilized as a local monitor buffered loop-through.
  • Audio inputs – Four unbalanced stereo audio inputs are on two pairs of female RCA connectors and two female 3.5 mm stereo mini jacks.
  • Audio outputs – Balanced or unbalanced audio is output on captive screw connectors. The preamp outputs (one fixed and one variable) can be set for mono or stereo via RS-232.
  • Integrated audio amplifier – The MLS 304MA outputs amplified mono audio on insulated screw terminals and provides 20 watt (rms) for a 4 or 8 ohm load or 16 watts (rms) for 70/100 volt, distributed audio systems.
  • Auxiliary/Mix audio input – An additional input accepts mono line level audio signals for mixing with any of the four switchable inputs.
  • Volume control – Adjustable when integrated with MediaLink System or as part of a third party RS-232 control system.
  • Loudness control – A unique audio feature of the MLS 304MA that compensates for the normal decreased hearing ability of the human ear at low volume levels by automatically adjusting the gain settings for low and high frequencies.
  • Triple-Action Switching¢â (RGB delay) – Blanks the screen during switching of RGB signals to eliminate visible switching transitions.
  • Front panel security lockout – Allows security lockout of front panel setup and adjustment options.
  • Control – Switcher control is available through front panel buttons or RS- 232. RS-232 control is provided via Extron's Windows¢ç-based control software, and/or a third party control system using Extron Simple Instruction Set (SIS¢â). When the switcher is used with a MediaLink Controller, it can remotely control input switching and volume control.
  • Rack-mountable – The MLS 304MA is housed in a 1U, full rack width metal enclosure.
  • Internal international power supply



  • ¡Ü Specifications
    MLS 304 Series and MLS 406 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  
            MLS 304 Series   2 RGBHV, RGBS, RGsB, RsGsBs
    1 RGBHV, RGBS, RGsB, RsGsBs local monitor loop-through
    2 composite video
            MLS 406 Series   3 RGBHV, RGBS, RGsB, RsGsBs
    1 RGBHV, RGBS, RGsB, RsGsBs local monitor loop-through
    3 S-video
    3 composite video
      Connectors  
            MLS 304 Series   2 female 15-pin HD (RGB), 1 female 15-pin HD (RGB loop-through)
    2 female RCA (composite video)
            MLS 406 Series   3 female 15-pin HD (RGB), 1 female 15-pin HD (RGB loop-through)
    3 female 4-pin mini DIN (S-video)
    3 female BNC (composite video)
      Nominal level   1 V p-p for Y of S-video, and for composite video
    0.7 V p-p for RGB
    0.3 V p-p for C of S-video (MLS 406 Series)
      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  
            MLS 304 Series   1 RGBHV, RGBS, RGsB, RsGsBs (follows input)
    1 composite video
            MLS 406 Series   1 RGBHV, RGBS, RGsB, RsGsBs (follows input)
    1 S-video
    1 composite video
      Connectors  
            MLS 304 Series   5 female BNC (RGB)
    1 female BNC (composite)
            MLS 406 Series   5 female BNC (RGB)
    2 female BNCs (S-video)
    1 female BNC (composite)
      Nominal level   1 Vp-p for Y of S-video, and for composite video
    0.7 Vp-p for RGB
    0.3 Vp-p for C of S-video (MLS 406 Series)
      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   ¡¾5 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: 0dB; balanced output: +6dB
      Frequency response at 1 watt output  
            Preamp/Lineout   20 Hz to 20 kHz, ¡¾0.5 dB
            Direct (4/8 ohm)   20 Hz to 20 kHz, ¡¾1.0 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)  
                8 watts/8 ohms   <0.05% @ 1 kHz, 20 kHz bandwidth
                12 watts/4 ohms   <0.25% @ 1 kHz, 20 kHz bandwidth
            Preamp   <0.110% @ 1 kHz, 20 kHz bandwidth
            Lineout   <0.025% @ 1 kHz, 20 kHz bandwidth
      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   ¡¾10 dB @ 100 Hz
      Treble   ¡¾10 dB @ 10 kHz
      Loudness (contour)   +6 dB @ 100 Hz to 10 kHz
    Audio input
      Number/signal type  
            MLS 304 Series   4 stereo, unbalanced
    1 Aux/Mix balanced/unbalanced mono (nonswitchable)
            MLS 406, Series   5 stereo, unbalanced (inputs 1-3, 5, 6)
    1 stereo, balanced/unbalanced (input 4)
    1 Aux/Mix balanced/unbalanced mono (nonswitchable)
      Connectors   
            MLS 304 Series   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)
            MLS 406 Series   3 pairs of female RCA connectors (inputs 1-3)
    1 female 3.5 mm captive screw connector, 5 pole (input 4)
    2 female 3.5 mm mini stereo jacks (unbalanced only) (inputs 5, 6);
    tip (L), ring (R), sleeve (GND)
    (1) 3.5 mm captive screw connector, 3-pole (Aux/Mix input)
      Impedance   >10k ohms unbalanced, DC coupled
      Nominal level   -10 dBV (316 mVrms)
      Maximum level   +8 dBV (10.2 dBu, 2.51 Vrms), unbalanced at <0.1%THD+N
    +10 dBu (7.28 dBV, 2.45 Vrms), balanced at <0.1% THD+N
      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   ¡¾0.8 dB channel to channel
      Nominal level   Configurable: -10 dBV (316 mVrms, default), +4 dBu (1.23 Vrms)
      Maximum level (600 ohm)  
            Power amp (mono or stereo)   >+17 dBu, balanced <0.5% THD+N
            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, MLS 406MA 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)   20 Hz to 20 kHz, 0.5% THD
            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, MLS 406SA 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)   10 Hz to 20 kHz, 0.5% THD
            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 configurations   1 = TX, 2 = RX, 4 = GND
      Program control   Extron's configuration program for Windows¢ç
    Extron's Simple Instruction Set (SIS¢â)
    General
      Power   100 VAC to 240 VAC, 50/60 Hz, 60 watts, internal, autoswitchable
      Temperature/humidity   Storage -40¡Æ to +158¡ÆF (-40¡Æ to +70¡ÆC) / 10% to 90%, noncondensing
    Operating +32¡Æ to +113¡ÆF (0¡Æ to +45¡ÆC) / 10% to 90%, noncondensing
      Rack mount   Yes, with included brackets (#70-077-03)
      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  
            MLS 406   5.0 lbs (2.3 kg)
            Amplified models   6.0 lbs (2.7 kg)
         
      Shipping weight  
            MLS 406   10 lbs (5 kg)
            Amplified models   11 lbs (5 kg)
      Vibration   ISTA 1A in carton (International Safe Transit Association)
      Listings   UL, CUL
      Compliances   CE, FCC Class A, VCCI, AS/NZS, ICES
      MTBF   30,000 hours
      Warranty   3 years parts and labor
       NOTE    All nominal levels are at ¡¾10%.
       NOTE    Specifications are subject to change without notice.