TM 1–1520–238–T–320–2120–52 SIGNAL NAME:DOP DISTANCE TO GOMEMORY LOCATION: 000503MEMORY 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 ones field.REMARKS: From Doppler through CPG MRTU Type III to FCC.PASS:If CONDITION agrees with distance to go, go to paragraph 20–53.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).20–53 SIGNAL NAME:DOP DISTANCE TO GOMEMORY LOCATION: 000504MEMORY DATA BIT(S):19–16(HEX)CONDITION:Fifth digit displayed on HOD is 0, and sixth digit is 0=0Fifth digit displayed on HOD is 1, and sixth digit is 0=1Fifth digit displayed on HOD is 2, and sixth digit is 0=2Fifth digit displayed on HOD is 5, and sixth digit is 0=3Fifth digit displayed on HOD is 4, and sixth digit is 0=4Fifth digit displayed on HOD is 5, and sixth digit is 0=5Fifth digit displayed on HOD is 6, and sixth digit is 0=6Fifth digit displayed on HOD is 7, and sixth digit is 0=7Fifth digit displayed on HOD is 0, and sixth digit is 1=8Fifth digit displayed on HOD is 1, and sixth digit is 1=9SIGNAL FUNCTION:Indicates tenths field.REMARKS: From Doppler through CPG MRTU Type III to FCC.PASS:If CONDITION agrees with distance to go, go to paragraph 20–54.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).