8 System DDF Digital Distribution Frame Units & Connectors

  8 System DDF Digital Distribution Frame Units & Connectors

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