TCF-142 Series - RS485 to Fibre Converters
- Ring and point-to-point transmission
- Protects against electrical interference and chemical corrosion
- Automatic Baud Rate Detection
- Low Current
- Wide Temperature Range
- Single Mode and Multi Mode Fibre Compatible
Product Details
The Protec fibre converters are used to convert the RS485 signalling used when networking equipment, to optical fibre signals. Two variants of the interface are available, one that is compatible with multimode optical fibre and one that is compatible with single mode fibre. The correct unit must be specified for the fibre being used in a particular installation.
The units automatically detect the Baud rate being used on the system, meaning that, in general, no setup is required.
The interface is compatible with Protec 6500 fire alarm control equipment and also Cirrus HYBRID, Cirrus CCD, Pro Point Plus and Cirrus RDP range of devices.
Order Codes
TCF-142-M-ST – Multi-mode ST Connector
TCF-142-S-ST – Single-mode ST Connector
Serial Signals
| RS-485-4w | Tx+, Tx-, Rx+, Rx-, GND |
Power Parameters
| No. of Power Inputs | 1 |
| Input Current | 15mA @ 24 VDC |
| Input Voltage | 12 to 48 VDC |
| Overload Current Protection | Supported |
| Power Connector | Terminal block |
| Power Consumption | 15mA @ 24 VDC |
Physical Characteristics
| IP Rating | IP30 |
| Housing | Metal |
| Dimensions (with ears) | (W)90 x (H)100 x (D)22 mm |
| Dimensions (without ears) | (W)67 x (H)100 x (D)22 mm |
| Weight | 320g |
| Installation | Wall mounting |
Environmental Limits
| Operating Temperature | -40 to 75°C (-40 to 167°F) |
| Storage Temperature | -40 to 85°C (-40 to 185°F) |
| Ambient Relative Humidity | 5 to 95% (non-condensing) |
Serial Interface
Optical Fibre
| TCF-142-M-ST Series: 100BaseFX ports (multi-mode ST connector) TCF-142-S-ST Series: 100BaseFX ports (single-mode ST connector) | |||
| Low-Speed Fibre Module | Multi-Mode | Single-Mode | |
| Fibre Cable Requirements | 50/125 μm, 800 MHz | G.652 | |
| 62.5/125 μm, 500 MHz | |||
| Typical Distance | 5 Km | 40 Km | |
| Wavelength | Typical (nm) | 850 | 1310 |
| TX Range (nm) | 840 to 860 | 1290 to 1330 | |
| RX Range (nm) | 800 to 900 | 1100 to 1650 | |
| Optical Power | TX Range (dBm) | 0 to -5 | 0 to -5 |
| RX Range (dBm) | 0 to -20 | 0 to -25 | |
| Link Budget (dB) | 15 | 20 | |
| Dispersion Penalty (dB) | 1 | 1 | |
| Note: When using a power meter to measure the fibre TX power, set the baudrate to 9,600 bps and send data (00, …, 0h) to the serial converter’s serial port. | |||
| Pull High/Low Resistor for RS-485 | 150 kΩ (¼W ± 5%) | ||
| Terminator for RS-485 | 120Ω (¼W ± 5%) | ||
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