Connecting Serial Devices to a Fibre Ring
With its multiple interface circuit, the TCF-142 Series can be used to connect serial devices to a fibre ring. Setting up a fibre ring requires connecting the Tx port of one TCF-142 to the Rx of a neighbouring converter, and using the DIP switches to configure the converter to “ring mode”. Signals are transmitted through the ring until it returns to the transmitting unit. With the TCF-142, you can set up fibre rings that have a total circumference of up to 100 km.
The benefits of connecting your serial devices through a fibre ring is that the connection is immune from electrical interference, has increased security and isolation that can prevent ground loop problems associated with serial communications.
Specifications
Optical Fiber Side
Fiber Connector: SC or ST
Cable Requirements:
Single-mode: 8.3/125, 8.7/125, 9/125, or 10/125 μm / Multi-mode: 50/125, 62.5/125, or 100/140 μm
Transmission Distance:
Single-mode: 40 km / Multi-mode: 5 km
Wavelength:
Single-mode: 1310 nm / Multi-mode: 850 nm Tx
Output:
Single-mode: > -5 dBm / Multi-mode: > -5 dBm Rx
Sensitivity:
Single-mode: -25 dBm / Multi-mode: -20 dBm
RS-232/422/485 Side
Connector: Terminal Block
RS-232 Signals: Tx, Rx, GND
RS-422 Signals: TxD+, TxD-, RxD+, RxD-, GND
RS-485-4w Signals: TxD+, TxD-, RxD+, RxD-, GND
RS-485-2w Signals: Data+, Data-, GND
Baudrate: 50 bps to 921.6 kbps
ESD Protection: 15 kV for all signals
Warranty
Warranty Period: 5 years
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