Panasonic AJ-PD900WP Operating Instructions Manual page 40

Audio Input Preparations
Using the Microphone not Mounted to the Main Unit
AUDIO IN Switch: Set the AUDIO IN Switches
of the channels to which
microphones are
connected to REAR [MIC].
– 40 –
Up to two external microphones can be connected to
the AUDIO IN CH1/CH2 Connectors.
Phantom power supply can also be supported
by setting the MIC POWER switch to the ON
position.