TM 1-6625-724-13&P0071 000071 00-39TASK 5 – ISOLATE IRREGULAR VIBRATIONSAH-64AAH-64DACC1ACC1ACC2ACC2ACC3ACC3ACC4ACC4LATLATPVERTVERTPNOTELAT/VERT (AH-64A), LATP/VERTP (AH-64D) are theon-board track and balance accelerometers. c. Use the cursor keys to highlight the desired accelerometer. Press DO twice to initiate measurement. Once themeasurement is complete, highlight another accelerometer for measurement acquisition, if desired, and press DOagain. d. If all accelerometer measurements have been made, the measurement screen will automatically exit. Press DOon 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 andExit 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 accelerometerchannel 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 thatresponse with one of the frequencies in table 3.
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