TASK 5 ISOLATE IRREGULAR VIBRATIONS
LAT/VERT (AH-64A), LATP/VERTP (AH-64D) are the
on-board track and balance accelerometers.
c. Use the cursor keys to highlight the desired accelerometer. Press DO twice to initiate measurement. Once the
measurement is complete, highlight another accelerometer for measurement acquisition, if desired, and press DO
d. If all accelerometer measurements have been made, the measurement screen will automatically exit. Press DO
on Finish to return to the Main Menu.
e. If all accelerometer channels have not been used, press QUIT to exit the measurement mode, highlight Save and
Exit and press DO to return to the Main Menu.
PROCEDURE 3: DISPLAY MEASUREMENTS
Enter the Display mode by pressing F2. Highlight One Test State and press DO. Select the desired accelerometer
channel and frequency range (0 to 100 Hz or 0 to 500 Hz) and press DO.
PROCEDURE 4: INTERPRET THE DATA
Look for the highest response in the spectrum and identify the source component by matching the frequency of that
response with one of the frequencies in table 3.