TM 1–1520–238–T–3
14–19
14–73 SIGNAL NAME:
CPG MSL BOX SIZE
MEMORY LOCATION: 000667
MEMORY DATA BIT(S):
16–17
(BINARY)
CONDITION:
If first digit displayed on HOD is 0, 1, 4, or 5=SMALL
If the first digit displayed on HOD is 2, 3, 6, or 7=LARGE
SIGNAL FUNCTION:
Selects lock–on after launch (LOAL) (small) or lock–on before launch (LOBL)
(large).
REMARKS: From FCC to symbol generator.
PASS:
If CONDITION corresponds to selected box size go to paragraph 14–74.
FAIL: Location of fault: replace FCC (TM 9–1230–476–20–1).
14–74 SIGNAL NAME:
CPG MSL BOX AZ
MEMORY LOCATION: 000667
MEMORY DATA BIT(S):
4–14
(SCALAR)
CONDITION:
Displays missile box azimuth reference when missiles are selected. Monitor HOD;
memory location should indicate negative for left and positive for right.
SIGNAL FUNCTION:
Displays azimuth reference to TADS reticle.
REMARKS: From FCC to symbol generator.
PASS:
If azimuth I beam is displayed, go to paragraph 14–75.
FAIL: Location of fault: wiring from TADS to FCC. Troubleshoot wiring to isolate fault
(TM 1–1270–476–T).
14–75 SIGNAL NAME:
CPG MSL BOX EL
MEMORY LOCATION: 000667
MEMORY DATA BIT(S):
4–14
(SCALAR)
CONDITION:
Displays missile box elevation reference elevation when missiles are selected. Monitor
HOD; memory location should indicate negative for up and positive for down.
SIGNAL FUNCTION:
Displays elevation reference to TADS reticle.
REMARKS: From FCC to symbol generator.
PASS:
Location of fault if missile box elevation is not displayed: replace symbol generator
(TM 11–1520–238–23–2).
FAIL: Location of fault: wiring from TADS to FCC. Troubleshoot wiring to isolate fault
(TM 1–1270–476–T).
14–76 SIGNAL NAME:
CPG TOP CUE DOT CONT
MEMORY LOCATION: 000670
MEMORY DATA BIT(S):
16
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Activates upper cue dot information for CPG.
REMARKS: From FCC to symbol generator.
PASS:
Location of fault if the fifth digit is 1, 3, 5, or 7: replace symbol generator
(TM 11–1520–238–23–2).
FAIL: Location of fault: replace FCC (TM 9–1230–476–20–1).
