Telex MS2002
2-channel Audiocom master station, MS2002

OUR PART #  MS2002


The MS-2002 is a complete 2-channel master station and system power supply in a single unit. You simply plug it into any AC power outlet from 100 to 240 volts, add a microphone or headset, connect intercom stations to the back panel and you're ready to communicate. It even has both 1-channel and 2-channel connectors so you don't have to add a seperate breakout box if you want to mix 1-channel and 2-channel intercom stations. The MS-2002 fits in a standard 19-inch rack and is 1 rack unit high.

MS-2002 Features

  • Speaker Station or Headset Station
    • Use the built-in speaker for listening and add an optional Telex MCP-90 series Gooseneck Panel Microphone for talk-back. Or, turn off the speaker volume, and plug in any of a variety of Telex headsets for private communication.
  • Voice Activated Microphone (VOX)
    • Separate controls adjust the voice activation level for the headset microphone and panel microphone inputs.
  • Public Address (PA) Output, with PA key
    • Use your intercom microphone to talk over a PA system.
  • Back-lit Keys
    • Improves visibility in low-light.
  • Incoming Call Indications
    • Red flashing call light, with beep tone if desired.
  • Mic Kill Key
    • You can turn off all microphones on a channel to quickly clear the channel.
  • Program Input for Each Channel
    • Connect any line-level audio source for monitoring in the speaker or headset, or for routing to the intercom channel. The program audio to the channel can be set to interrupt while the MS2002 operator is talking on the channel.
  • Binaural (Stereo) Listening with External PoweredSpeakers
    • You can connect external powered speakers and then monitor channel 1 and 2 as separate right and left audio.
  • Expandable
    • Add more channels by connecting optional EMS4001 Expansion Stations. Each EMS4001 adds four additional powered channels (up to eighteen channels).
  • Clear-Com® Compatible
    Specifications
    • General
      • Power Requirements
        • AC Input: 100-240 VAC, 50/60 Hz
        • Channel Power: 24 VDC nominal
      • Dimensions (H x W x D): 1.75" x 19" x 10.31" (44.5 x 483 x 261.9 mm)
      • Weight: approx. 4.5 lbs (2 kg)
      • Environmental Requirements
        • Storage: -20° to 80° C; 0-95% humidity, non-condensing
        • Operating: -15° to 60° C; 0-95% humidity, non-condensing
    • Dynamic-mic Headset
      • Microphone: 50 to 200 ohm, dynamic (balanced or unbalanced)
      • Headphones: 150 to 600 ohm, monaural
      • Connector Type: XLR-4M connector
    • Panel Microphone Input
      • Microphone Type: Electret condenser
      • Power: Phantom (+5 VDC)
      • Nominal Level: -42 dBu
      • Maximum Level: -25 dBu
      • Connector Type: MCP-90, 1/4" stereo plug with threaded shaft
    • Program Input
      • Input Level: 100 mV maximum
      • Voltage Gain: 25 +/-3 dB
      • Output Level (to intercom channel): 1.0 Vrms nominal, 2.3 Vrms max.
      • Input Impedance: 75k ohm
      • Common Mode Rejection: Greater than 50 dB
      • Connector Type: 9-pin female D-sub (DE9S)
        • Pin 1: Ground
        • Pin 2: Program 1 input low
        • Pin 3: Program 2 input low
        • Pin 4: NC
        • Pin 5: NC
        • Pin 6: Program 1 input high
        • Pin 7: Program 2 input high
        • Pin 8: NC
        • Pin 9: NC
    • Intercom Channels, Balanced Mode (Back panel switchset to BAL)
      • Output Level: 1 Vrms nominal
      • Input Impedance: 300 ohms
      • Bridging Impedance: greater than 10,000 ohms
      • Sidetone: -40 dB, 35 dB adjustable range
      • Call Signaling
        • Send: 20 kHz +/-100 Hz, 0.5 Vrms +/-10%
        • Receive: 20 kHz +/-800 Hz, 100 mVrms
      • Mic-Kill Frequency
        • Send: 24 kHz +/-300 Hz, 0.5 Vrms +/-10%
        • Detect: 24 kHz +/-800 Hz, 100 mVrms
      • Noise Contribution: less than -70 dB
      • Common Mode Rejection Ratio: greater than 50 dB
      • Connector Type: One XLR-3M and XLR-3F pair, wired in parallel, for each channel (permits "loop-thru" connection). Two XLR-6M (Neutrik) connectors for 2-channel connection
      • XLR-3 Balanced Configuration Pinout
        • Pin 1: Common
        • Pin 2: Intercom audio low and +24 VDC input
        • Pin 3: Intercom audio high and +24 VDC input
      • XLR-6 Balanced Configuration Pinout
        • Pin 1: Audio and DC Common
        • Pin 2: Local Power (12 to 15 VDC, 65 to 150 mA)
        • Pin 3: Intercom channel 1 audio low and +24 VDC phantom power
        • Pin 4: Intercom channel 1 audio high and +24 VDC phantom power
        • Pin 5: Intercom channel 2 audio low and +24 VDC phantom power
        • Pin 6: Intercom channel 2 audio high and +24 VDC phantom power
    • Intercom Channel, Unbalanced Mode (UNBAL position)
      • Output Level: .750 Vrms +/-10%
      • Input Impedance: 200 ohms
      • Bridging Impedance: greater than 10,000 ohms
      • Call Signaling
        • Send: 11 +/-3 VDC
        • Receive: 4 VDC minimum
      • Connector Type: Uses same connector as for balanced mode, above, but with pinout modified by BAL/UNBAL switch on back panel as follows:
        • XLR-3 Unbalanced Configuration Pinout
          • Pin 1: Common
          • Pin 2: +30 VDC input
          • Pin 3: Intercom audio high
        • XLR-6 Unbalanced Configuration Pinout
          • Pin 1: Common
          • Pin 2: +30 VDC input
          • Pin 3: Channel 1 +30 VDC input
          • Pin 4: Channel 1 Intercom audio high and DC call
          • Pin 5: Channel 2 +30 VDC input
          • Pin 6: Channel 2 Intercom audio high and DC call
    • PA Output
      • Output Level 235 mVrms nominal
      • Connector Type: 1/8" stereo Phone Jack
        • Tip: PA output high
        • Ring: Not used
        • Sleeve: Common
    • Speaker Output
      • Output Level: 0 dB nominal (1.0 Vrms max)
      • Output Impedance: 1000 ohms nominal
      • Frequency Response: 200 Hz to 8 kHz +1/-3dB
      • Connector Type: RCA Phono Jack
        • Tip: Speaker Output high
        • Sleeve: Common
    • Expansion Input/Output
      • Type: 2.0 mm stereo phone jack
        • Tip: Talk output
        • Ring: Listen input
        • Sleeve: Common
    • Headphone Amplifier
      • Voltage Gain: 30 +/-3 dB
      • Maximum Output: 250 mW +/-10% into 150 ohms, 65 mW +/-10% into 600 ohms
      • Frequency Response: 200 Hz to 8 kHz, at the headphones
      • Total Harmonic Distortion: less than 0.2% at 200 mW
      • Sidetone: 18 +/-2dB, adjustable
    • Panel Microphone Amplifier
      • Voltage Gains
        • Mic to CHN: 25 +/-3 dB, before limiting
        • Mic to Headphone: adjustable, 45 dB +/-10% maximum, into 150 ohms
        • Mic to PA: 15 +/-3 dB, 235 mVrms +/-10%
      • Frequency Response: 200 Hz to 8 kHz +1/-3dB
      • Total Harmonic Distortion: less than 0.2% at CHN output
      • VOX Range: -75 to -30 dB, -60 dB factory set
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