LOCALIZE/GLIDE SLOPE (ILS) PHASE ADJUSTMENT

TM 11-6625-2975-12

2-4.. OPERATING PROCEDURES. (CONT)

NOTE

DDM can be changed in direction using T/F U/L D/R key. However, a DDM of at least

.001 must be selected before Iocalizer or glide slope signal can be switched to D/R

(90 Hz).

The following step causes DDM to switch to DIR (90 Hz) direction.

Press and hold T/F U/L D/R key until D/R (90 Hz) indicator lights as shown in view A above.

3. Change DDM to next required DDM either by using DATA ENTRY keys, slewing keys, or

STEP D RDL D DDM key.

NOTE

The following step causes DDM to switch back to U/L (150 Hz) direction.

4. Press and hold T/F U/L D/R key until U/L (150 Hz) indicator lights.

LOCALIZE/GLIDE SLOPE (ILS) PHASE ADJUSTMENT

NOTE

The phase between the 90 and 150 Hz signals can be varied.

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