To change the RDAC settings on the AR-2000, use the following procedure:
1. In the recording standby mode, press the MODE button. The display will change to the GRADE/remaining recording time display.
2. Rotate the SELECT dial to select GRADE.
3. Press the SELECT dial.
4. Rotate the SELECT dial to select the RDAC-GRADE.
5. Press the ENTER button to set the RDAC-GRADE.
6. Press the MODE button to return to the recording level display. Note that it is not possible to change the RDAC-GRADE while recording.