Sony HDCAM HDW-730 Operation Manual page 167

When an HDCA-901 camera adaptor is used
With an HDCA-901 (not supplied) connected to the camcorder, you can
record separate sounds on audio channels 3 and 4. To record external
audio signals from the HDCA-901 on audio channels 3 and 4, change the
setting of CAMERA ADAPTER to ENABL on the VTR MODE 1 page
of the MAINTENANCE menu. In such a case, the external audio signals
are recorded on audio channels 3 and 4 regardless of the settings of
AUDIO CH3/4 on the VTR MODE 1 page of the MAINTENANCE
menu. Adjust the level of the input signal using the level adjustment
4
knob of the HDCA-901.
4-35
Chapter 4 Adjustments and Settings for Recording