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Page Title:
Heading Servo Scale Error, IX Mode |
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|  MIL-C-38418E(AS)
d.
Rotate 0 compensation potentiometer fully cw. Synchronize
the electronic control amplifier by depressing and holding the heading
set control on the controller, then position the azimuth detector to
obtain a 0 heading.
e.
Set the compensation switch to
the
and
OFF position
re-synchronize the electronic control amplifier.
(1)
The heading must have decreased by 4 1 from the
compensated value.
f.
Set the compensation switch to the ON position.
Rotate the 0 compensation potentiometer on the electronic
g.
control amplifier fully ccw.
Re-synchronize the electronic control
amplifier and position the azimuth detector to obtain a O heading.
h.
Set the compensation switch to
the
and
OFF position
re-synchronize the electronic control amplifier.
(1)
The heading must have increased by 4 1 from the
compensated value.
f.
Return the 0 compensation potentiometer on the electronic
control amplifier approximately to the center position.
Repeat steps c, d, e, f, g, h, and i with the heading set at
j.
each 15 and with the correspondingly marked compensation potentiometer
being employed.
4.6.4.3 Heading Servo Scale Error, IX Mode - The heading servo scale
error DG mode shall be checked as follows:
a.
Set the controls on the controller and electronic control
amplifier as follows:
Mode switch to IX
Latitude control to O
Hemisphere switch to N
Compensation switch to OFF
O
b.
Set the displacement gyroscope heading transmitter to O .
c.
Depress and rotate heading set control knob on the controller
to position the servoed repeater connected to heading output No. 1 to
0.
58
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