This section of the specification addresses IEC 61156-1 and IEC 61156-7. The cables detailed here are specified for frequencies up to 1,200 MHz and are tailored for constructing patch, equipment, and work area cables as defined by ISO/IEC 11801 and ISO/IEC 15018.
The specification includes a cable with four individually shielded twisted pairs (STP). It may also include a common shield over the cable core. The transmission characteristics are detailed for a frequency range of 4 MHz to 1,200 MHz, as well as at a temperature of 20°C.
These cables are suitable for various communication channels that require the use of up to four pairs simultaneously. In this regard, this section provides the cable characteristics necessary for system designers to assess new systems.
The cables covered by this section are designed to operate under voltages and currents commonly encountered in communication systems. They are not intended for use with low impedance sources, such as public utility power supplies.
