External Audio
Use the External Audio settings to set the left and right external audio levels. This menu is only enabled when the Audio Source is set to External or set to Internal and External.
NOTE: When the Recording Frame Rate is set to a higher speed than the Project Time Base setting, audio is recorded as varispeed audio.
The External Microphone is represented as Channels 3 and 4 on the UI VU Meters (refer to Playback for more information).
You can adjust the external audio levels for Ch 3 and Ch 4 from -8.0 dB to 34.0 dB.
The default setting is 1.0 dB.
When you enable Link Ch 3 & Ch 4 Gain, the adjustments you make to either channel of gain will adjust both channels to the same setting.
Source
Use Source to select the type of input connected to external audio channel 3 and 4 ports.
You can select microphone, line, or +48V phantom power.
The default setting is microphone (Mic).
Limiter
When enabled, use the limiter to place a limit past which the audio level for channels 3 and 4 cannot exceed.
You can select from -2.0 to -12.0 Decibel Full Scale (dBFS) as the limit.
The default limit is -6.0 dBFS.