Panasonic AG-HVX200 User Guide

Sets the audio to output as CH1 and CH2 signals when playing back a tape 
recorded in the 32K (12bit) audio mode.
ST1:
  Selects the sound that was recorded during shooting.
  CH1 signals = CH1 track
  CH2 signals = CH2 track
ST2:
  Selects the sound that was dubbed on the recording.
  CH1 signals = CH3 track
  CH2 signals = CH4 track
MIX:
  Mixes the sound that was recorded in shooting and audio dubbing.
  CH1 signals = CH1 track + CH3 track
  CH2 signals = CH2 track + CH4 track
<Note>
When the sound is recorded in the 48K (16bit) audio mode, CH3 and CH4 do 
not exist so the following is always the case.
  CH1 signals = CH1 track
  CH2 signals = CH2 track

Sets the audio signals to output from the AUDIO IN/OUT pin jack when the P2 
card or the tape is played back.
CH1 · CH2:
  CH1 output = CH1 signals, CH2 output = CH2 signals
CH1:
  CH1 output = CH1 signals, CH2 output = CH1 signals
CH2:
  CH1 output = CH2 signals, CH2 output = CH2 signals
CH3 · CH4: (P2 card only)
  CH1 output = CH3 signals, CH2 output = CH4 signals
CH3: (P2 card only)
  CH1 output = CH3 signals, CH2 output = CH3 signals
CH4: (P2 card only)
  CH1 output = CH4 signals, CH2 output = CH4 signals

        indicates the factory setting.