Y-Connector 20 System DDF Digital Distribution Frame

  Y-Connector 20 System DDF Digital Distribution Frame

Digital distribution frames (DDF) are greatly used in systems of transmitting and receiving of digital signals in telecommunications networks.Main technical data are as follows: 
- Characteristic Impedance: 75 ohm;
- Data Rate: 2Mb/s, 8Mb/s, 34Mb/s, 140Mb/s, 155Mb/s;
- Coaxial Connetor Contact Resistance:  not more than 5 mohm ( out conductor, press-connection); not more than 10 mohm (inner conductor, welding-connection);
- Insulation Resistance: more than 1000Mohm ( under 500v, DC );
- Dielectric Strengh: more than 1000v, under 50Hz, AC, without break-down and flying arc during 1 minute;
- Cross-Talk Guard: more than 70dB ( 50kHz ~ 210MHz );
- Insertion Loss: less than 0.3dB ( 50kHz ~ 210MHz );
- Return Loss: 18dB ( 50kHz ~ 210MHz );
- Pull-off Force: more than 50N;
- Frequency of Connection Operations: not less than 500 times