UN series

Optical Data Transmission System

Fiber-Optic-Interface UN

As a system of optical links this product line enables the user to establish optical connections between various different computers via RS232 (V24). This version consist of an opto-electronic transceiver within a standard plug.
Within this product line, a powerful and easy to use plug & play system can be installed.
Two different connectors are available: one for plastic fibres and one for glass fibres. When using plastic fibre, only a sharp knife is needed for installation. Units arranged for glass fibres are equipped with standard ST-series fibre optic connectors. The user can attach the fibre without opening the plug.
The product line UN-Series allows a low cost, robust and reliable link.
No external power supply is required. The power for the transmit and receive circuitry is drawn from the port of the connected equipment.

  • Optical connection between two devices RS232C
  • Interference free data transfer using optical fibre
  • The housing consist of a metallized plastic hood with screw-locking
  • Serial, asynchronous and full duplex data transfer
  • Full galvanic isolation between connected devices
  • No external power supply required
  • Not for optical data transfer to and from externally powered modules
  • Xon / Xoff protocol
  • Data rate up to 40 kbit/s
  • 9-pole D-Sub socket

Technical Data

  • Max. data transfer rate: max. 40 kbit/s
  • Max. distance:
    Type UN1373B max. 60 m with cable 2 x 1000µm PMMA-fase
    Type UN6373B max. 1000 m with glass fibre cable / connection pin
  • Wavelength:
    Type UN1373B 660 nm
    Type UN6373B 850 nm
  • Connector: D-Sub 9-pole socket
  • Compatible: IBM compatible
  • Operating temperature: 0°C to +65°C
  • Storage temperature: -20°C to +85°C
  • Dimensions (L x W x H): 71 x 32 x 21 mm3
  • Weight: 45 g

Always use two modules of these group!
Because of different sensitivities and power products they will not work in combination with products belonging to other groups.

Connector layout

Pin Symbol Signal name Comments
1     connected with Pin 4 and Pin 6
2 RxD Receive Data  
3 TxD Transmit Data  
4     connected with Pin 1 and Pin 6
5 GND Signal Ground  
6     connected with Pin 1 and Pin 4
7     connected with Pin 8
8     connected with Pin 7