Section VII
TABLE 7-2A. FLIGHT LINE CERTIFICATION PROCEDURE (CONT)
If Indication
Normal
Circuit or
Is Abnormal
Indication
Function Tested
Step
Procedure
Perform telescope ele-
10
Set up and level Turntable
vation tracking test in
Part
at Turntable location es-
accordance with para-
tablished during survey.
1
(cont)
Mount magnetic azimuth
reference detector
Replace defective
Monitor.
(MARD) on Turntable
as shown in figure 7-2.
Connect cable W2 between
1J3 MONITOR and 4J1
of Turntable:
READOUT SELECT to F. V.
POWER ON-OFF to
POWER ON.
Adjust VOLTS ADJUST
control until EXC VOLTS
met er indicates 23.5
volts.
Rotate Turntable until
HEADING and ERROR
readout indicates 0
DEGREES 10 MINUTES.
Record ERROR readout
indication. Set azimuth
scale to 0 degree.
Rotate Turntable to
headings of 90, 180, and
270 degrees. Record
ERROR readout indication
at each heading.
Add the four errors alge-
braically and divide the
sum by four. Record this
value as index error (I1).
Rotate Turntable to-sight a
vertical target at a distant e
of at least 1/2 mile. Read
and record azimuth scale
indication as target bearing
(B).
Note
Target elevation must
be within 5 degrees of
horizontal. Use plumb
line or corner of
building.
7-8F
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