What are the USB recording function's specifications?

The USB recording function records this unit's master output.
The recording level is the pre-master level.
The sound is recorded in WAV files in the "PIONEER REC" folder on the USB device.
Approximately 90 minutes of sound can be recorded on a 1 GB USB device.
The recorded file (WAV) is automatically split every three hours of recording.
The maximum limit to the number of recorded files is 999.