Advantech BB-FOSTC

Fiber optic cabling has inherent resistance to EMI/RFI and transient immunity, making it ideal for industrial and utility data communication applications. Model FOSTC provides the most versatile connection possible between asynchronous serial equipment using fiber optic cable. Any two pieces of asynchronous serial equipment can communicate full- or half-duplex over two fibers at distances up to 4 km (2.5 mi). The converter can be used for point-to-point communications between serial devices. It can also be used to create a multi-drop master/slave configuration, allowing one serial device to talk to multiple slave devices around a fiber ring. RS-232, RS-422 or RS-485 data signals are supported. Different standards can be mixed and matched to allow RS-232 devices to connect to RS-422 or RS-485 systems. This means Model FOSTC can replace converters and isolators when connecting remote devices, while providing the EMI/RFI and transient immunity of optical fiber. Model FOSTC supports both Transmit Data and Receive Data lines, and provides full hardware control of the RS-485 driver with B B SmartWorx Automatic Send Data Control circuit. All serial connections are provided on the same DB25 female connector, while the multi-mode fiber is connected via two ST connectors. Powered by 12 VDC at 140 mA max. An external power supply is available for purchase.

SPECIFICATIONS

SERIAL TECHNOLOGY


Data Rate
RS-232: 115.2 kbps maximum
RS-422/485: 500 kbps maximum

RS-232
Connector DB25 female (DCE)
Signals TD, RD, GND

RS-422/485
Connector DB25 female (DCE)

RS-485, 2-wire
Data A(-), Data B(+), GND

RS-422/485, 4-wire
TDA(-), TDB(+), RDA(-), RDB(+), GND



FIBER OPTIC TECHNOLOGY


Transmission Line
Dual, multi-mode glass optical cable

Connector
ST

Wavelength
820 nm

Size Options
50/125, 62.5/125, 100/140, 200 µm

Output Power
(-) 17 to (-) 10 dBm

Receive Sensitivity
(-) 25.4 dBm to (-) 24 dBm

Cable
62.5/125 micro-meter

Data Rate
9.6 to 115.2 kbps

Maximum Distance
4 km (2.5 mi)



FIBER COMMUNICATION MODES


Point-to-Point Transmission
Asynchronous, half or full-duplex

Multi-Drop Transmission
Asynchronous, half duplex fiber ring



POWER


Source
External

Input Voltage
12 VDC

Range
DC 10 - 14 VDC

Connections
2.5mm phone jack (tip positive) or
DB25 pins 25(+) & 12(-)

Power Consumption
1.7 W maximum, 1 W typical



MECHANICAL


Dimensions
11 x 5.9 x 2.5 cm (4.3 x 2.3 x 0.95 in)

Enclosure
Plastic, Inline



ENVIRONMENTAL


Operating Temperature
-40 to +80 °C (-40 to +176 °F)

Storage Temperature
-40 to +85 °C (-40 to +185 °F)

MTBF
570522 MTBF

Calculation Method
Parts Count Reliability Prediction



APPROVALS / CERTIFICATIONS - FOSTC


FCC Part 15, CISPR, EN 55022 + AC:2011 Class A Emissions
CE
EN 61000-6-1 Generic Standards for Residential, Commercial and Light-Industrial Environments
EN 61000-4-2 Electro-Static Discharge (ESD)
EN 61000-4-3 +A1 +A2 +IS1 Radiated Field Immunity (RFI)
EN 61000-4-4 Electrical Fast Transients-Burst Immunity (EFT)
EN 61000-4-6 Conducted Immunity