User's Manual Part 6

 673) 
  
* 
.
The frequency response of the line output low pass filter is selectable by LINK2, LINK27
and LINK28.
• 2 pole: -12dB/octave stopband attenuation, f > 4kHz.
• 6 pole: -36dB/octave stopband attenuation, f > 4kHz.
The 2 pole LPF is for applications requiring minimal group delay and stopband attenua-
tion, e.g. standard configuration, crossband 2 wire + earth, modem connection.
The 6 pole LPF is for applications requiring external network connection where stop-
band attenuation is mandatory above 4kHz, e.g. crossband via external network (bal-
anced line + opto key), remote controlled audio via external network (balanced line +
opto key).