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BENCH  TEST AFCS  COMPUTER  (AVIM) (Continued) - TM-55-1520-240-23-9_1116
BENCH TEST AFCS COMPUTER (AVIM) (Continued) TEST 6 YAW AXIS TEST

TM-55-1520-240-23-9 CH-47D Heilcopter Manual
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TM 55-1520-240-23-9 11-277 BENCH TEST AFCS COMPUTER (AVIM)     (Continued) 11-277 333. Set ANALOG SIGNALS ATT synchro (38) to 0.0  . 334. Set ANALOG SIGNALS PITCH ATT HSI HDG pot.  (42) to 500. 335. Set ANALOG SIGNALS GND SIGNAL switch (41) to GND. 336. Set ANALOG SIGNALS AIRSPEED switch (35) to 2. 337. Set CONTROL PANEL SIMULATION HEADING switch (26) to DISENG. 338. Set CONTROL PANEL SIMULATION AFCS switch (12) to OFF. 339. Set DISCRETE SIGNALS VERT GYRO VALID switch (16) to 0. 340. Set DISCRETE SIGNALS HYD PRESS switch (13) to 0. 341. Set ANALOG SIGNALS PITCH HSI switch (54) to PITCH. 342. Set ANALOG SIGNALS ATT SELECT switch (37) to HDG. 343. Set DISCRETE SIGNALS CYCLIC BRAKE switch (27) to 1 momentarily and then to 0. 344. Set METER RANGE switch (7) to 20V. Read and record V24 reading on AC/DC VOLTMETER (10). 345. Set ANALOG SIGNALS PULSER STIM switch (49) to 4.  Read and record V25 reading on AC/DC VOLTMETER (10). 346. Calculate V26. Subtract reading of step 344 from reading of step 345 (V26 = V25  -  V24).  Result shall be  -4.04 to  -4.65 volts. 347. Set ANALOG SIGNALS PULSER STIM switch (49) to 1. END ROLL AXIS TEST Change 1 11-1101







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