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Serving Security Industry with Technology and Dedication

Fiber Transmission Products

N3571 and N3771 series provides the ability to transmit and receive one RS-232 and one DIP selectable data (RS-422, RS-485, Manchester or Biphase) over one or two fibers.

Modular in design, the N3571 and N3771 series can be rack-mounted or used as stand-alone module. Rack mounting requires the N3910 series subrack chassis. Stand-alone module used the N3910-1S and can be placed on a desktop or mounted to a wall.

  • Features
  • Order Info
  • Specifications
  • Download
  • Surface mount technology
  • On-panel DIP switch selection of RS-422, RS-485 (2 or 4 wires), Manchester/Biphase
  • On-panel DIP activation of 120 Ohm termination resistor
  • LED indicators for monitoring of system operating status
  • Surge protection
  • Highest optical dynamic range
  • Immune to EMI and RFI
  • Dense structure for easy installation
  • Hot swappable rack mount cards
  • Automatic re-settable fuses, short circuit protection
  • 12VDC or 24VAC power supply
  • Industry standard connectors
  • No user adjustments required

FO MM TRX, 1D IO +1 RS-232, Module, 12VDC/24VAC

FO MM TRX, 1D IO +1 RS-232, Card, 1-Slot

FO MM TRX, 1D IO +1 RS-232, Module, 12VDC/24VAC

FO MM TRX, 1D IO +1 RS-232, Card, 1-Slot

FO SM TRX, 1D IO+1 RS-232, Module, 12VDC/24VAC

FO SM TRX, 1D IO+1 RS-232, Card, 1-Slot

FO SM TRX, 1D IO+1 RS-232, Module, 12VDC/24VAC

FO SM TRX, 1D IO+1 RS-232, Card, 1-Slot

Fiber Type Optical Budget (dB) Wavelength (nm) Range (km)
Multi-mode 12 1310/1310 4.4
Single-mode 20 1310/1550 25
*Higher output lasers available for range over 25km


1. Distance is limited to fiber loss, splices, chromatic dispersion and bandwidth

2. Range estimates are based on 1.0dB/km @ 1310nm on MM fiber,0.35dB/km @ 1310nm and 0.25dB/km @ 1550nm on SM fiber, and include a 3dB safety factor

3. Range estimates for multimode are based on 500MHz/km fiber

Technical Specifications
Optical Performance
Output Power -15dBm (typical)
Receiver Sensitivity -27dBm (typical)
Wavelength 1310/1310nm
Connector ST
Output Power -10dBm (typical)
Receiver Sensitivity -30dBm (typical)
Wavelength 1310/1550nm
Connector FC
Data Performance
Data Rate DC to 115.2kbps
Bit Error Rate <10-9
LED Indicators
Bit Error Rate Red
Optical Link Loss Red
Data Input/Output Green
General Parameters
Operating Temperature -40°F ~ 167°F (-40°C ~ 74°C)
Storage Temperature -40°F ~ 185°F (-40°C ~ 85°C)
Operating Humidity 0 ~ 95% RH (non-condensing)
Card Dimensions (W ×H ×D) 0.79" x 5.08" x 6.57" (20mm x 129mm x 167mm)
Module Dimensions (W ×H × D) 0.94" x 6.22" x 7.76" (24mm x 158mm x 197mm)
Power Consumption 1.9W
Card Weight 0.82lbs. (0.37kg)
Module Weight 1.57lbs. (0.71kg)
Mean Time Between >100,000 Hrs
Certifications and Approval
Product Certifications N3571: FCC1, CE/EMC2: EN 55022, EN 55024, ISO 9001:2008N3771: FCC3, CE/EMC4: EN 55022, EN 55024, ISO 9001:2008
Certificate No.: 1 RSZ07070303; 2 RSZ07070303-1, RSZ07070303-2
3 RSZ08041602; 4 RSZ08041602-1, RSZ08041602-2