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DX-7501     Digital Current Loop     Click for larger image of the DX-7501 Fiber Transeiver.
For 0-20, or 30mA Digital Current Loop Applications  

  Typical Current Loop Application


The Litelink DX-7501 is a data transceiver designed to transmit and receive digital current loop signals in a wide range of diverse applications. The unit is designed to operate in simplex or full duplex modes. The DX-7501 can easily be user configured for active or passive 20 or 30 mA current loop operation and will operate continuously at all data rates from DC to 100 Kb/sec.

Both multimode and single-mode versions are available and installation is totally adjustment free. In addition, integral indicators are provided to continuously indicate the presence of data signals as well as the presence of operating power making system troubleshooting simple.
 
Specifications Important Features
Data Transmission Rate  DC to 115.2 Kb/s    · DC to 100 Kb/s
Protocols Supported  Current Loop 0-20mA or
  30mA		  · Fully Adjustment Free
Protocol Modes  Active or Passive  · Data Signal & Power
    Indicators
Operating Modes  Simplex, Duplex  · Stand-alone, DIN or Rack
    Mountable (same unit)  
Rise/Fall Times (typ)  1.0 microsecond  
Operating Wavelength  850, 1310 or 1550nm
Optical Connectors ST (mulitmode)
FCPC (single-mode) 		   
Optical Loss Budget  0-15 dB (multimode),
 0-18 dB (single-mode)		    
Operating Temperature -35 to +75 °C
Humidity <95% non-condensing
MTBF (per MIL HBK 217D) >120,000 hours
Signal Connectors  Removable Terminal Block
Power Requirements  10-18 VAC/DC @150mA
Physical Size (mm)  5.0" x 3.0" x 1.0";
 (127 x 76 x 25.4)		    

Note all specifications are subject to change without notice
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