Application: PC connection over fiber-optic cables

Background knowledge: Power for the interfaces The interface type described on this page is powered from the signal lines of the serial interface and generally requires no external power supply to operate on standard RS232 interfaces.

If however there are supply problems due to low-power interfaces, it is always possible to externally power the interface with up to 9V using its handshake inputs, or to use fiber-optic interfaces having their own power supply (e.g. model 81201). With model 81029 there is also a 9-pin special version whose maximum transmission distance is limited to 20 meters, but which only loads the connected RS232 interface with a current of approx. 2mA. With this version it is also possible to operate on less-powerful RS232 interfaces without having to connect a separate power source.

Product properties:

• Conversion from RS232 to fiber-optic cable
• Easier installed than any copper cable, thanks to patented FOC adapter
• The interface is very easy to install:
  • Cut the fiber-optic cable with a sharp knife at right angles.
  • Insert into patented adapter of the W&T interface.
  • Plug the adapter into the PC.
  • That’s it!
• 100% protection against interfering radiation
• No re-configuration of transmission parameters required
• Electrical isolation
• Lightning protection
• Conforms to standards both in office and industrial environments:
  • Increased noise immunity for industrial areas
  • Stricter noise emission for residential and commercial areas

Baud rate:		110..115,200 baud
Data format:		any format
Signal lines:		RxD, TxD (full duplex)
Transfer distance:		max. 100 m (Specifications for maximum transmission distance when operating on RS232 ports with MC1488 driver chips and with handshake lines connected)
Power supply:		Generally from the RS232 signals For low-power versions of the RS232 interface external supplying of the interfaces via handshake inputs with up to 9V DC is possible
RS232 adapter:		25-pin SUB-D female with DCE pinout
Fiber-optic cable adapter:		integrated socket with automatic interlocking of the fiber-optic cable
Fiber-optic medium:		Duplex plastic optical fiber cable Dimensions 2.2 x 4.4 mm with a fiber diameter of 1 mm Material: core: PMMA, cladding: PE
Wavelength:		approx. 660 nm
Ambient temperature:		Storage: -40..+70°C Operation: 0..+50°C
Housing:		SUB-D adapter housing
Weight:		approx. 30 g
Delivery:		1x FOC RS232 interface, 25-pin, DCE 1x Mini Gender Changer male/male

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