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Page Title:
Synchronization Indicator Deflection |
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|  M1L-C-38418E(AS)
4.6.3.4 Synchronization Indicator Deflection - The following test shall
be conducted for the sync indicator on the compass system controller.
Apply +27 1Vdc through a 56.2 kohm resistor with positive on
a.
connector 3J1-6 and negative on 3J1-7.
The sync indicator pointer must deflect halfway toward
(1)
plus (+).
Repeat step a,
with
-27 1Vdc
polarity
with deflection
b.
halfway toward minus (-).
c.
Disconnect all test equipment.
(1)
The sync indicator pointer must return to center within
1/16 inch.
4.6.3.5 Heading Set Operation - A voltage and frequency of 26 1V, 400
Hz shall be connected from connector 3J1-3 to 3J1-23 (grid). `For the
compass system controller with the timed automatic synchronization
specified in 3.8.3.2 the mode selector switch must be in either the COMP
or EMERG position. The following test shall be conducted:
The resistance from connector 3J1-1 (Hi) to 3J1-23 (Low)
a.
shall be measured. Resistance shall be within the following limits for
each position of the heading set control:
Resistance
Heading Set
1 ohm maximum
Depressed
1 megohm minimum
Released
For the compass system controller with fast erection combined
b.
with the heading set control as specified in 3.8.3a repeat step a,
measuring resistance from connector 3J1-12 to 3J1-23.
Measure ac voltage from connector 3J1-2 to 3J1-23. Voltage
c.
shall be within the following limits for each position of the heading set
control:
Voltage
Heading Set
4 to 5Vac
Depressed & full cw
4 to 5Vac
Depressed & full ccw
75 mV max
Released
50
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