Telex US2002
Multichannel Audiocom User Station

US2002

The US-2002 is a simple, multichannel user station. It provides you with talk, listen, and call capabilities. You simply plug it into any AC power outlet from 100 - 240 vlots, add a microphone or headset, connect intercom stations to the back panel, and you're ready to communicate. Combine the US-2002 with different types of power supplies to create various Master Station configurations. The US-2002 can operate in an unbalanced mode to make it completely Clear-Com® compatible.

• • 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 US2002 operator is talking on the channel.
• • Expandable
• Add more channels by connecting optional ES4000A Expansion Stations. Each ES4000A adds four additional channels (up to eighteen channels).
• • Clear-Com® Compatible.

• Power Requirement
• Phantom Power: 24 VDC nominal
• Local Power: 12 to 15 VDC, 65 to 150 mA
• Dimensions (H x W x D): 1.75" x 8.25" x 10.31" (44.5 x 209.5 x 261.9 mm)
• Weight: approx. 2 lbs (0.9 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
• Pin 1: Microphone low
• Pin 2: Microphone high
• Pin 3: Headphone high
• Pin 4: Headphone low
• Panel Microphone or Electret-mic Headset
• Microphone: 5k ohm, electret (-57 dB)
• Headphones: 150 to 600 ohm, monaural
• Connector Type: MCP-90, stereo plug with threaded shaft connector
• Program Input
• Input Level: 100mV maximum
• Voltage Gain: 25 +/-3dB
• Output Level: 1.0 Vrms nominal, 2.3 Vrms maximum
• Input Impedance: 75k ohms
• Common Mode Rejection: Greater than 50 dB
• Connector type: DB9F
• 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 (SW2 set to BAL position)
• 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
• Common Mode Rejection Ratio: Greater than 50 dB
• Connector Type: One XLR-3M and XLR-3F pair, wired in parallel, for each channel
• Pin 1: Common
• Pin 2: +30 VDC input
• Pin 3: Intercom audio high
• 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: 0 dB nominal (1.0 Vrms max)
• Tip: Talk output
• Ring: Listen input
• Sleeve: Common
• External Power
• Type: 2.0 mm power jack
• Internal pin: positive (+)
• External shell: negative (-)
• Headphone Amplifier
• Voltage Gain: 30 +/-3dB
• Maximum Output: 250 mW +/-10% into 150 ohms, 65 mW +/-10% into 600 ohms
• Frequency Response: 200 Hz to 8 kHz +1/-3 dB
• Incoming Call Beep Tone: 2 kHz, at the headphones
• Total Harmonic Distortion: less than 0.2% at 200 mW
• Sidetone: 18 +/-2 dB, adjustable
• Panel Microphone Amplifier
• Voltage Gain
• Mic to CHN: 25 +/-3dB, before limiting
• Mic to Headphone: adjustable, 45 dB +/-10% maximum, into 150 ohms
• Mic to PA: 15 +/-3dB, 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

Our Part #  US2002