TM 55-1520-240-23-9
11-280
AFCS INTERFACE TEST
(Continued)
11-280
TEST 31
RADAR ALTIMETER VALIDITY TEST (NO. 1)
191.
Set AFCS SYSTEM SEL switch (1) to 1.
192.
Set METER SOURCE switch (3) to DISCRETE
MON.
193.
Set DISCRETE SIGNAL MONITOR switch (34)
to SEL 1. Set SIGNAL SEL 1 switch (54) to
RADAR ALT VALID.
194.
Rotate LO knob (66) clockwise until OFF flag (67)
disappears. Read digital display (6). Reading
shall be +3.5 to +5.5 VDC.
195.
Rotate LO knob (66) on copilot and pilot indicator
(68) counterclockwise. OFF flag (67) shall
appear. Read digital display (6). Reading shall
be -0.5 to +0.5 VDC.
END RADAR ALTIMETER VAUDITY TEST (NO. 1)
11-1204