摘要:
The invention relates to an amplifier, in particular for a cable or optical network, for downstream and upstream signals that are transmitted in different frequency bands. The amplifier comprises, a first and a second connector, a common amplifier element for downstream and upstream signals, a first and a second downstream-signal filter, and a first and a second upstream-signal filter. An input of the amplifier element is connected to an output of the first downstream-signal filter as well as to an output of the first upstream-signal filter; an output of the amplifier element is connected to an input of the second downstream-signal filter as well as to an input of the second upstream-signal filter; the first connector communicates with the output of the second upstream-signal filter and the input of the first downstream-signal filter; and the second connector communicates with the output of the second downstream-signal filter and the input of the first upstream-signal filter.
摘要:
A rack, in particular for cable television, having a number of modules whose inputs and outputs are connected by means of cables for the transmission of radio frequency signals and control signals, is described. The modules (2) are connected via the common inputs and outputs by means of coaxial cables (3) which carry radio frequency signals as well as coded control signals.