TABLE 7-2A. FLIGHT LINE CERTIFICATION PROCEDURE (CONT)
Normal
If Indication
Circuit or
Indication
Function Tested
Is Abnormal
Procedure
Step
E1-E2 Line Regulation
Part
Test
I
Line regulation of E1
Same as step 4.
S3 to OFF.
and E2 regulated power
indicate 50 milli-
supplies.
volts or less.
Adjust VOLTS ADJUST
control until EXC VOLTS
Note
meter indicates 22.5
volts.
Disregard mo-
mentary de-
flection exceed-
5
Adjust VOLTS ADJUST
control until EXC VOLTS
ing 50 millivolts.
Part
meter indicates 24.5
II
volts.
6
Readout Command
Part
Accuracy Test
I
READOUT SELECT to 90.
HEADING and
This switch selects an
Replace defective switch
internally generated
ERROR readout
reference signal for
shall indicate 90
angle indicator ampli-
presentation on
fier 1A7, or angle
DEGREES 15
MINUTES.
HEADING and ERROR
indicator 1A8.
readout.
6
READOUT SELECT to 0.
HEADING and
This switch selects an
Replace defective switch
Part
internally generated
ERROR readout
1S9.
reference signal for
II
shall indicate
0 DEGREES 15
presentation on
MINUTES.
HEADING and ERROR
readout.
800-Cycle Index Error
7
HEADING read-
Field Tester supplies
Replace defective switch
Part
Test
out shall indicate
magnetic heading
1S8, angle indicator
I
0, 120, and 240
information for 800-
amplifier 1A7, angle
E1 NORM. -REV. to E1 REV. DEGREES
cycle control trans-
indicator 1A8, or Field
former and null
Tester.
E2 NORM. -REV. to OFF.
detection circuits in
El VOLTS controls to
angle indicator and
Perform Field Tester
90-10-0.
angle indicator
amplifier.
READOUT SELECT to F. V.
F. V. SELECT to 2.
Adjust VOLTS ADJUST
control until EXC VOLTS
meter indicates 23.5
volts ,
S1 to 1, 2, and 3.
Record ERROR readout
indication at each
position.
7-8C