TM 1–1520–238–T–3
6–10
Change 4
6–35 SIGNAL NAME:
HARS LONG L (ACY) HARS LONG LSB’S (ACZ)
MEMORY LOCATION: 002153
MEMORY DATA BIT(S):
12–19
(SCALAR)
CONDITION:
Monitor HOD; HARS LONG L positive equals forward movement (HARS LONG L
negative equals aft movement).
SIGNAL FUNCTION:
Least significant 8 bits of HARS longitude estimate.
REMARKS: From HARS through DASEC to FCC.
PASS:
If conditions are met, go to Chapter 20, paragraph 20–80.
FAIL: Location of fault: HARS, wiring from HARS to DASEC, DASEC. Troubleshoot wiring to isolate
fault (TM 11–1520–238–23–2).
6–36 SIGNAL NAME:
HARS SIN PITCH
MEMORY LOCATION: 002177
MEMORY DATA BIT(S):
4–19 (ACY) 4–15 (ACZ)
(SCALAR)
CONDITION:
Monitor HOD; HARS SIN PITCH positive indicates noseup (HARS SIN PITCH negative
indicates nosedown).
SIGNAL FUNCTION:
Monitors HARS sine of pitch.
REMARKS: From HARS through DASEC to FCC.
PASS:
If conditions are met, go to paragraph 6–37.
FAIL: Location of fault: CPG RAI, wiring from CPG RAI to HARS, HARS, wiring from HARS to
DASEC, DASEC. Troubleshoot wiring to isolate fault (TM 11–1520–238–23–2).
6–37 SIGNAL NAME:
HARS COS PITCH
MEMORY LOCATION: 002200
MEMORY DATA BIT(S):
4–19 (ACY) 4–15 (ACZ)
(SCALAR)
CONDITION:
Monitor HOD; HARS COS PITCH positive indicates 0 to 180 degrees (HARS COS
PITCH negative equals 180 to 360 degrees).
SIGNAL FUNCTION:
Monitors HARS cosine of pitch.
REMARKS: From HARS through DASEC to FCC.
PASS:
If conditions are met, go to paragraph 6–38.
FAIL: Location of fault: HARS, wiring from HARS to DASEC, DASEC. Troubleshoot wiring to isolate
fault (TM 11–1520–238–23–2).
6–38 SIGNAL NAME:
HARS PITCH ACC
MEMORY LOCATION: 002171
MEMORY DATA BIT(S):
4–19 (ACY) 4–15 (ACZ)
(SCALAR)
CONDITION:
Monitor HOD; HARS PITCH ACC positive indicates noseup movement (HARS PITCH
ACC negative indicates nosedown movement).
SIGNAL FUNCTION:
Monitors HARS pitch acceleration.
REMARKS: From HARS through DASEC to FCC.
PASS:
If conditions are met, go to Chapter 20, paragraph 20–80.
FAIL: Location of fault: HARS, wiring from HARS to DASEC, DASEC. Troubleshoot wiring to isolate
fault (TM 11–1520–238–23–2).
