The TCF-142 Series provides seamless RS-232/422/485 to fiber optic conversion for extending serial transmission over long distances — up to 5 km via multimode and up to 40 km via single-mode fiber. Designed for industrial use, these converters reduce signal interference, enable robust ring or point-to-point configurations, and offer advanced auto-detection and protection features.

Key Features:

• Supports point-to-point and ring fiber topologies
• Serial transmission extended via fiber: 5 km (multimode), 40 km (single-mode)
• Auto baudrate detection up to 921.6 kbps
• ADDC for automatic RS-485 data direction control
• Protection from EMI and corrosion
• Rugged IP30-rated metal housing
• Wide-temperature models available (-40 to 75 °C)

Technical Specifications:

Serial Interface:

• Ports: 2
• Standards: RS-232 / RS-422 / RS-485 (only one at a time)
• Baudrate: 50 bps to 921.6 kbps (supports non-standard rates)
• Flow Control: ADDC for RS-485
• Pull High/Low Resistors: 1 kΩ / 150 kΩ
• Termination: Selectable (N/A, 120 Ω, 120 kΩ)
• Connector: 7-pin terminal block
• Latency: 300 ns
• Signals:
• RS-232: TxD, RxD, GND
• RS-422: Tx+/-, Rx+/-, GND
• RS-485 2-wire: Data+/-, GND
• RS-485 4-wire: Tx+/-, Rx+/-, GND

Fiber Optic Interface:

| Property | Multimode (TCF-142-M) | Single-mode (TCF-142-S) |
|------------------|------------------------|--------------------------|
| Distance | 5 km | 40 km |
| Wavelength | 850 nm | 1310 nm |
| TX Power | 0 to -5 dBm | 0 to -5 dBm |
| RX Sensitivity | 0 to -20 dBm | 0 to -25 dBm |
| Link Budget | 15 dB | 20 dB |
| Dispersion Penalty | 1 dB | 1 dB |

Power:

• Voltage: 12–48 VDC
• Current: 70–140 mA
• Connector: Terminal block
• Protections: Overload and reverse polarity

Physical Characteristics:

• Housing: Metal, IP30
• Dimensions:
• With ears: 90 x 100 x 22 mm
• Without ears: 67 x 100 x 22 mm
• Weight: 320 g
• Mounting: Wall mount

Environmental:

• Operating Temperature:
• Standard: 0 to 60 °C
• Wide Temp: -40 to 75 °C
• Storage Temperature: -40 to 85 °C
• Humidity: 5–95% (non-condensing)

Certifications:

• EMC/EMI: EN 55032/35, CISPR 32, FCC Part 15B Class A
• EMS: IEC 61000-4 series
• Safety: UL 60950-1
• Vibration: IEC 60068-2-6

MTBF:

• 780,480 hours (Telcordia standard)

Package Contents:

• 1x TCF-142 Converter
• 1x Rubber stand
• 1x Quick installation guide
• 1x Warranty card