TM 55-1520-240-23-9
11-277
BENCH TEST AFCS COMPUTER (AVIM)
(Continued)
11-277
408.
Set ANALOG SIGNALS DIR CPT switch (33)
to 1.
409.
Set DISCRETE SIGNALS CYCLIC BRAKE
switch (27) to 1 momentarily and then to 0.
410.
Set CIRCUIT SELECT A UNITS switch (18) to 3.
Read AC/DC VOLTMETER (10). Reading shall
be -6.5 to -7.5.
411.
Set ANALOG SIGNALS YAW RATE switch (34)
to 3. Read AC/DC VOLTMETER (10). Reading
shall be +6.5 to +7.5.
412.
Set CIRCUIT SELECT A UNITS switch (18)
to 0. Read and record V20 reading on AC/DC
VOLTMETER (10).
413.
Calculate V21. Subtract reading of step 396 from
reading of step 412 (V21 = V20 - V17). Result
shall be +2.68 to 3.30 volts.
414.
Set ANALOG SIGNALS YAW RATE switch (34)
to 1.
415.
Set CIRCUIT SELECT A UNITS switch (18) to 3.
Read AC/DC VOLTMETER (10). Reading shall
be +6.5 to +7.5.
416.
Set ANALOG SIGNALS YAW RATE switch (34)
to 2.
417.
Set DISCRETE SIGNALS SWIVEL LOCK switch
(31) to 1.
418.
Set DISCRETE SIGNALS CYCLIC BRAKE
switch (27) to 1.
419.
Set CIRCUIT SELECT A UNITS switch (18) to 0.
Read AC/DC VOLTMETER (10). Reading shall
be -1.31 to +1.31.
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