TM 1–1520–238–T–320–1920–46 SIGNAL NAME:DOP CROSSTRACK DEVIATIONMEMORY LOCATION: 000477MEMORY DATA BIT(S):7–4(HEX)CONDITION:If first digit displayed on HOD is 0, and second digit is 0, 2, 4, or 6=0If first digit displayed on HOD is 1, and second digit is 0, 2, 4, or 6=1If first digit displayed on HOD is 2, and second digit is 0, 2, 4, or 6=2If first digit displayed on HOD is 3, and second digit is 0. 2. 4, or 6=3If first digit displayed on HOD is 4, and second digit is 0, 2, 4, or 6=4If first digit displayed on HOD is 5, and second digit is 0, 2, 4, or 6=5If first digit displayed on HOD is 6, and second digit is 0, 2, 4, or 6=6If first digit displayed on HOD is 7, and second digit is 0, 2, 4, or 6=7If first digit displayed on HOD is 0, and second digit is 1, 3, 5, or 7=8If first digit displayed on HOD is 1, and second digit is 1, 3, 5, or 7=9SIGNAL FUNCTION:Indicates tenths field.REMARKS: From Doppler through CPG MRTU Type III to FCC.PASS:Location of fault if CONDITION agrees with crosstrack deviation: CPG MRTU Type III, wiringfrom CPG MRTU Type III to Doppler, Doppler. Troubleshoot wiring to isolate fault(TM 9–1230–476–20–1).FAIL: Location of fault: Doppler, wiring from Doppler to CPG MRTU Type III, CPG MRTU Type III.Troubleshoot wiring to isolate fault (TM 11–1520–238–23–2).20–47 SIGNAL NAME:DOP COSINE TRUE HEADINGMEMORY LOCATION: 000501MEMORY DATA BIT(S):18–17(BINARY)CONDITION:If fifth digit displayed on HOD is 0 or 1=plus, north, west, up, toIf fifth digit displayed on HOD is 2 or 3=failure warningIf fifth digit displayed on HOD is 4 or 5=no computed data and no failure detectedIf fifth digit displayed on HOD is 6 or 7=minus, south, east, down, fromSIGNAL FUNCTION:Indicates sine/status of Doppler.REMARKS: From Doppler through CPG MRTU Type III to FCC.PASS:If CONDITION agrees with heading, go to paragraph 20–48.FAIL: Location of fault: Doppler, wiring from Doppler to CPG MRTU Type III, CPG MRTU Type III.Troubleshoot wiring to isolate fault (TM 11–1520–238–23–2).20–48 SIGNAL NAME:DOP COSINE TRUE HEADINGMEMORY LOCATION: 000501 AND 000502MEMORY DATA BIT(S):16–4 AND 19–18(SCALAR)CONDITION:Monitor HOD; memory location response should indicate a positive from 0 to180 degrees or a negative from 181 to 359 degrees.SIGNAL FUNCTION:Indicates Doppler cosine true heading.REMARKS: From Doppler through CPG MRTU Type III to FCC.PASS:If CONDITION agrees with heading, go to paragraph 20–49.FAIL: Location of fault: Doppler, wiring from Doppler to CPG MRTU Type III, CPG MRTU Type III.Troubleshoot wiring to isolate fault (TM 11–1520–238–23–2).