4.  Press Setup[F2]>IF Bandwidth[F1] and set the 
Intermediate frequency bandwidth. (10kHz, 
30kHz, 100kHz, 300kHz, 1MHz, ) 
  Set with adequate bandwidth to accommodate 
spectrum contained in the carrier.  
5.  Press LPF[F2] to set the low pass filter 
frequency, alternatively the frequency can be 
set to bypass: