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FAQ 236-2002-pt

what is the meaning of the maximum output level of a single channel amplifier?

why does a headend never reach such an output level?

Respuesta: 

the standard din45004 specifies the measurement procedures to evaluate the maximum output level of a single amplifier.

nevertheless, a single channel amplifier is always part of a headend and then it is combined with other amplifiers.

when this channel amplifier is looped-through with the rest of the amplifiers, the final output level of the headend is affected by:

  1. the internal loopthrough loss of the amplifier
  2. the loss of the link used to interconnect them.

the contribution of these two losses is about 1 db.

because of this, the max. output level of the headend is always lower than that specified in the technical specs of the single channel amplifers.

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