TM 1–1520–238–T–3
14–22
14–87 SIGNAL NAME:
CPG AIRSPEED CONT
MEMORY LOCATION: 000673
MEMORY DATA BIT(S):
19
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Activates CPG airspeed display.
REMARKS: From FCC to symbol generator.
PASS:
If the first digit displayed on HOD is 1, 3, 5, or 7, go to paragraph 14–88.
FAIL: Location of fault: replace FCC (TM 9–1230–476–20–1).
14–88 SIGNAL NAME:
CPG AIRSPEED
MEMORY LOCATION: 000673
MEMORY DATA BIT(S):
4–12
(SCALAR)
CONDITION:
Displays CPG airspeed on HOD. Monitor HOD; memory location should indicate
0 on ground and increasing positive with increasing airspeed.
SIGNAL FUNCTION:
Displays airspeed from air data sensor.
REMARKS: From FCC to symbol generator.
PASS:
Location of fault if CONDITION is met: replace symbol generator (TM 11–1520–238–23–2).
FAIL: Location of fault: replace FCC (TM 9–1230–476–20–1).
14–89 SIGNAL NAME:
CPG RADALT CONT
MEMORY LOCATION: 000674
MEMORY DATA BIT(S):
19
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Activates CPG radar altitude display.
REMARKS: From FCC to symbol generator.
PASS:
If the first digit displayed on HOD is 1, 3, 5, or 7, go to paragraph 14–90.
FAIL: Location of fault: replace FCC (TM 9–1230–476–20–1).
14–90 SIGNAL NAME:
CPG RADALT
MEMORY LOCATION: 000674
MEMORY DATA BIT(S):
4–17
(SCALAR)
CONDITION:
Displays radar altitude on HOD. Monitor HOD; memory location should indicate
0 on the ground and increase positive for an increase in altitude.
SIGNAL FUNCTION:
Displays radar altitude from RADALT.
REMARKS: From FCC to symbol generator.
PASS:
Location of fault if CONDITION is met: replace symbol generator (TM 11–1520–238–23–2).
FAIL: Location of fault: replace FCC (TM 9–1230–476–20–1).
14–91 SIGNAL NAME:
PLT RADALT CONT
MEMORY LOCATION: 000677
MEMORY DATA BIT(S):
19
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Activates pilot radar altitude display.
REMARKS: From FCC to symbol generator.
PASS:
If the first digit displayed on HOD is 1, go to paragraph 14–92.
FAIL: Location of fault: replace FCC (TM 9–1230–476–20–1).
