Section VII
TABLE 7-2A. FLIGHT LINE CERTIFICATION PROCEDURE (CONT)
If Indication
Circuit or
Normal
Is Abnormal
Function Tested
Procedure
Indication
Step
HEADING readout
7
El NORM. -REV. to E1
shall indicate 60
Part
NORM. Record ERROR
readout indication.
DEGREES.
II
HEADING readout
1
S1 to 1 and 2. Record
shall indicate 180
Part
ERROR readout indica-
and 300 DEGREES.
tion at each position.
III
7
Add the six recorded
Resultant index
errors algebraically
error shall not
Part
and divide the sum by
exceed 0 3
IV
minutes.
six.
400-Cycle Accuracy and
8
Part
Repeatability Test
I
Replace defective switch
POWER ON-OFF to
HEADING and
Synchro standard
1S9, angle indicator
POWER OFF.
ERROR readout
supplies heading
indications shall
amplifier 1A7, or angle
information for 400-
indicator 1A8.
not exceed 6
Disconnect Field
cycle control trans-
Tester cable W4 from
minute cliff erenc e
former in angle
from synchro
indicator and angle
Console.
standard settings.
indicator amplifier.
Connect synchro standard
to 1J4 EXT CX & TEST
pins as follows:
S1 BLU to A
S2 BLK to C
S3 YEL to B
R1 RED to D
R2 BLK to E
E1 NORM. -REV. to OFF.
READOUT SELECT to
EXT CX.
POWER ON-OFF to
POWER ON.
Set synchro standard
to increasing 15-degree
increments through
360 degrees. Record
ERROR readout indica-
tion at each setting.
7-8D
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