Arrangement for adjusting frequency response

A network element of a cable television (CATV) network, said network element comprising:

• at least a first and a second downstream amplifier stage, wherein a first equalizer provides a first frequency response correction for a given frequency range, said first frequency response correction corresponding approximately to a frequency response correction applied for a coaxial cable attenuation, and a second equalizer provides a second frequency response correction for said given frequency range, wherein a level of said second frequency response correction at least in middle frequencies of said given frequency range is lower that the level of the first frequency response correction;
• a first signal path comprising the first equalizer and a second signal path comprising the second equalizer between the first and the second downstream amplifier stages;
• a switch configured to connect the first equalizer or the second equalizer to be used between the first and the second downstream amplifier stages;
• a sampling circuit configured to provide a first sampling signal associated with the first signal path and a second sampling signal associated with the second signal path from an output of the second downstream amplifier stages;
• and
• a control unit configured to control the switch to connect the first signal path or the second signal path to be used between the first and the second downstream amplifier stages based on said first and second sampling signals, wherein the network element comprises a functionality for determining primary pilot signal frequencies to be used for adjusting at least one of gain or slope of amplifier units, wherein said functionality is configured to determine at least two secondary pilot signal frequencies and said control unit is configured to:
• measure signal level of the first and second sampling signals on said at least two secondary pilot signal frequencies;
• compare the signal level of the first and second sampling signals to predefined target levels at the secondary pilot signal frequencies;
• and
• output said control signal based on the comparison at the secondary pilot signal frequencies.