A310-300 AOM

2-4 EFIS Controls

1.
The DH button selects the decision height into the EFIS display.

2.
The OBS button selects the OBS heading into the EFIS display.

3.
The rotary knob increases and decreases the selected EFIS read-out (DH/OBS).

4.
The EFIS display shows the selected value. DH is displayed in feet and OBS in degrees.

5.
The ND mode selector switches the ND between rose and arc mode.