TM 1–1520–238–T–320–1320–30 SIGNAL NAME:DOP TRACK ANGLE ERRORMEMORY LOCATION: 000467MEMORY DATA BIT(S):15–12(HEX)CONDITION:If third digit displayed on HOD is 0, 1, 2, or 3, and fourth digit is 0=0If third digit displayed on HOD is 4, 5, 6, or 7, and fourth digit is 0=1If third digit displayed on HOD is 0, 1, 2, or 3, and fourth digit is 1=2If third digit displayed on HOD is 4, 5, 6, or 7, and fourth digit is 1=3If third digit displayed on HOD is 0, 1, 2, or 3, and fourth digit is 2=4If third digit displayed on HOD is 4, 5, 6, or 7, and fourth digit is 2=5If third digit displayed on HOD is 0, 1, 2, or 3, and fourth digit is 3=6If third digit displayed on HOD is 4, 5, 6, or 7, and fourth digit is 3=7If third digit displayed on HOD is 0, 1, 2, or 3, and fourth digit is 4=8If third digit displayed on HOD is 4, 5, 6, or 7, and fourth digit is 4=9SIGNAL FUNCTION:Indicates tens field.REMARKS: From Doppler through CPG MRTU Type III to FCC.PASS:If CONDITION agrees with track angle, go to paragraph 20–31.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).20–31 SIGNAL NAME:DOP TRACK ANGLE ERRORMEMORY LOCATION: 000467MEMORY DATA BIT(S):11–8(HEX)CONDITION:If second digit displayed on HOD is 0 or 1, and third digit is 0 or 4=0If second digit displayed on HOD is 2 or 3, and third digit is 0 or 4=1If second digit displayed on HOD is 4 or 5, and third digit is 0 or 4=2If second digit displayed on HOD is 6 or 7, and third digit is 0 or 4=3If second digit displayed on HOD is 0 or 1, and third digit is 2 or 5=4If second digit displayed on HOD is 2 or 3, and third digit is 1 or 5=5If second digit displayed on HOD is 4 or 5, and third digit is 1 or 5=6If second digit displayed on HOD is 6 or 7, and third digit is 1 or 5=7If second digit displayed on HOD is 0 or 1, and third digit is 2 or 6=8If second digit displayed on HOD is 2 or 3, and third digit is 2 or 6=9SIGNAL FUNCTION:Indicates ones field.REMARKS: From Doppler through CPG MRTU Type III to FCC.PASS:If CONDITION agrees with track angle, go to paragraph 20–32.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).

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