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TCF-142-RM Series

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RS-232/422/485 to fiber slide-in modules for the NRack System™

Product Feature

  • Extends RS-232/422/485 transmission up to 40 km with single-mode or 5 km with multi-mode
  • 1 or 150 kilo-ohm adjustable pull high/low resistor
  • Supports ring and point-to-point transmission


The TCF-142-RM Series slide-in modules are serial-to-fiber converters that work with the TRC-190 chassis. The modules convert from the RS-232, RS-422, or RS-485 signal to a fiber-optic signal.


Automatic Baudrate Detection

The TCF-142-RM Series can automatically detect the serial baudrate. This is an extremely convenient feature. Even if a device’s baudrate is changed, the signal will still be transmitted through the media converter without any problem.

Serial Interface

No. of Ports2
Serial StandardsRS-232, RS-422, RS-485
Baudrate50 bps to 921.6 kbps (supports non-standard baudrates)
Flow ControlADDC® (automatic data direction control) for RS-485
ConnectorDB9 female
Optical FiberRead more
Pull High/Low Resistor for RS-4851 kilo-ohm, 150 kilo-ohms
RS-485 Data Direction ControlADDC® (automatic data direction control)
Terminator for RS-485N/A, 120 ohms, 120 kilo-ohms

Serial Signals

RS-232TxD, RxD, GND
RS-422Tx+, Tx-, Rx+, Rx-, GND
RS-485-4wx+, Tx-, Rx+, Rx-, GND
RS-485-2wData+, Data-, GND

Power Parameters

Input Current150 mA @ 12 VDC
Overload Current ProtectionSupported
Power Consumption150 mA @ 12 VDC

Physical Characteristics

IP RatingIP30
Dimensions86.8 x 136.5 x 21 mm (3.42 x 5.37 x 0.83 in)
Weight105 g (0.23 lb)

Environmental Limits

Operating Temperature0 to 60°C (32 to 140°F)
Storage Temperature (package included)-20 to 75°C (-4 to 167°F)
Ambient Relative Humidity5 to 95% (non-condensing)

Standards and Certifications

EMCEN 55032/24
EMICISPR 32, FCC Part 15B Class A
EMSIEC 61000-4-2 ESD: Contact: 4 kV; Air: 8 kV
IEC 61000-4-3 RS: 80 MHz to 1 GHz: 3 V/m
IEC 61000-4-4 EFT: Power: 1 kV; Signal: 0.5 kV
IEC 61000-4-5 Surge: Power: 1 kV; Signal: 0.5 kV
IEC 61000-4-6 CS: 150 kHz to 80 MHz: 3 V/m; Signal: 3 V/m
IEC 61000-4-8 PFMF
Environmental TestingIEC 60068-2-1
IEC 60068-2-2
IEC 60068-2-3
SafetyEN 60950-1, IEC 60950-1
VibrationIEC 60068-2-6


Time514,926 hrs
StandardsTelcordia (Bellcore), GB


Warranty Period5 years
Name Type Version Release Date
Datasheet for TCF-142-RM Series Datasheet V1.0 12 November 2018


Fiber Module Type Multi-mode SC


Fiber Module Type Multi-mode ST


Fiber Module Type Single-mode SC


Fiber Module Type Single-mode ST

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