Paragraphs 4-54 to 4-56
a. Set MODE SELECTOR to CAL. Conduct four-
heading electrical swing by rotating HEADING SE-
LECTOR to 0, 90, 180, and 270 degrees. Enter
errors in table F1 of swing data sheet.
b. Repeat electrical swing to obtain errors while
adjusting transmitter compensator so that error at
O degrees equals error at 180 degrees (N-S) and
error at 90 degrees equals error at 270 degrees
(E-W) within 12 minute 3.
4-55. SYSTEM ERROR COMPENSATION.
a. Set MODE SELECTOR to MON. Disconnect
adapter cable W1 and connect adapter cable W2 as
follows :
End W2P1 to J8 of KE28 compensator.
End W2J1 to cable P8 of A-6A aircraft.
End W2P2 to MC-2 Adapter Box.
b. Connect adapter cable W3 as follows:
End W3P1 to J9 of KE28 compensator.
End W3J1 to cable P9 of A-6A aircraft.
End W3P2 to connector 1J4 of Console.
c. Apply power to aircraft compass system and
perform procedures of paragraph 4-53.c through i.
d. Set MODE SELECTOR to COMP, READOUT SE-
LECT to EXT CX, and rotate HEADING SELECTOR
in 15-degree increments. Synchronize MA-1 com-
h. Change controls and switches of Console as
pass system with its controller and adjust KE28
follows :
compensator to obtain zero error on Console readout.
Allow sufficient time for slaving signal to reach a
null. Record final system readout errors in table
E1-E2 CHECK to E1 CHECK.
F2 of swing data sheet.
READOUT SELECT to 90.
e. After compass system is fully compensated, re-
i. Adjust E1 voltage controls to null NULL INDI-
move all adapter cables and return compass system
CATOR. Record voltage value on line F-7 of swing
to its original configuration.
data sheet. Set E1-E2 CHECK switch to E2 CHECK
and adjust E2 voltage controls to null NULL INDI-
4-56. FORMS. NAVAIR Form 13910/1, Magnetic
CATOR. Record value of E2 voltage on line F-8 of
Compass Calibrator Set Type MC-2 Area Magnetic
swing data sheet. Set E1-E2 CHECK switch to OFF.
Survey Data, and NAVA IR Form 13910/2, Magnetic
Compass Calibrator Set Type MC-2 Swing Data, are
stocked in the Forms anc Publications Segment of the
A-6A aircraft. See applicable manual for compen -
Navy Supply System and may be requisitioned in
sation in other types of aircraft.)
accordance with NAVSUF Publication 2002.
4-25
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