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Model TC8000
Analog/Intercom Audio Multiplexer 24-Channel

Features

• Up to 24 Analog/Intercom Channels
• Voice Bandwidths from 300Hz to 3.4Khz
• Low Noise PCM Digitized Voice
• Push-Button Buzzer for Signaling
• Single Mode & Multimode
• Built-In Power Redundancy
• Optional Optical Redundancy
• Field Interchangeable Interface Modules
• LEDs for "Alarm," "Power A," "Power B," "Vcc," "Buzzer," & "Push-Button"
• Rack Mount or Standalone

Description

The TC8000 multiplexes up to 24 channels of Analog or Intercom Signals over single mode or multimode fiber optic cable. It supports voice bandwidths from 300 Hz to 3.4 KHz. The analog interface is for FSK (frequency shift key) applications. It has a 600 ohm isolation audio transformer and supports voltages from 0 to 3 Vpp. The intercom interface is for 4-wire voice communication. It connects to a handset with mouth-and-ear piece.

The TC8000 digitizes the audio signals and converts them to PCM (pulse code modulation). Since the analog and voice signals are digitized, the voice quality does not degrade over extended distances. Distances to 30 km are typical via 1300nm single mode fiber, to 4 km over 850nm multimode fiber.

The TC8000 is available standalone or rack mount. Standalone versions support up to 8 channels, rack mount support up to 24 channels.

Standard interfaces are RS-232, RS-422 and Dry Contact Closures. Interface modules are interchangeable. Four RJ-11 ports are provided on the rear side to connect with handsets or customer's audio devices. Built-in power redundancy is standard. Optical redundancy is available as an option. Fiber Optical connectors are ST; FC is optional. Electrical connectors are RJ-11. Power is 9 to 12VDC or 115/230VAC with an external power cube.

Technical Specifications   Audio Bandwidth Analog 300Hz to 3.4 KHz Intercom 300Hz to 3.4 KHz Channel Capacity Standalone / Wallmount 2, 4 or 8 Channels Rackmount Unit 2, 4, 8, 12, 16, 20, 24 or 28 Channels Data Interfaces Async RS-232, RS-422, TTL or Dry Contact Detector or Closure Data Rate Up to 19.2Kbps Optical Transmitter ELED Receiver PIN Diode Wavelength 850nm, 1300nm Multimode 1300nm, 1550nm Single Mode Fiber Optic Connectors ST or FC Loss Budget* (850nm, 1300nm, 1550nm) Multimode (62.5/125µm): 15dB Single Mode (9/125µm): 15dB Electrical Analog Interface (2 or 4-Wire) 600 Ohm (Isolated Transformer) Intercom Interface Capacitor Coupled Connector RJ11 Female Maximum Analog Input 3Vp-p Connector RJ11(Female) * Contact factory for higher requirements System Bit Error Rate 1 in 109 or better Visual Indicators System PWR A, PWR B, VccA, VccB, ALARM Electrical Signal Status Pick Up Handset when Flashing, Push to Talk Remote Station Signaling Power Standard 12VDC @ 500mA Optional 24VDC, -48VDC, or 115/230VAC (with external power cube) Temperature Operating -10° to 50°C Hi-Temp (optional) -20° to 70°C Storage -40° to 90°C Humidity 95% non-condensing Physical (Standalone/Wallmount Unit) (Details) Height (6.64 cm) 2.64" Width (18.13 cm) 7.14" Depth (24.89 cm) 9.80" Weight (907 g) 2.0 lbs.

Typical Application (Application Questions)

The TC8000 is frequently used in audio/intercom environments where it is necessary to transmit multiple intercom quality channels or FSK modem channels from one location to another via fiber optic cable. It is also used in harsh environments where ground loops, EMI/RFI interference and lighting conditions may occur.