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MIL-N-81497A(AS)
3.3.9 (Continued)
Input Power Voltage:
l15 1.0 volts (V); 400 5 hertz
(Hz), 3 phase, Y connect
400 5 Hz, 1 phase
(Synchro excitation)
5 to 28V, 400 5 Hz, 1 phase
(variable) (Control Panel edge
lighting voltage)
+27.5 0.5 V DC
+18 0.5 V DC (Advisory lamp
excitation)
+27.5 0.5 V DC or +9 0.5 V DC
(Control, Navigation Advisory
lamp excitation)
3.3.10
Service Conditions
- The equipment shall operate
satisfactory under any of the environmental service conditions or
reasonable combination of these conditions as specified MIL-E-5400,
Class 1, except as modified herein;
3.3.10.1
Vibration - The equipment shall operate satisfactorily
when subjected to the vibration requirements of Curves I and II of
MIL-E-5400.  Maximum vibration for the Power Supply and Navigation Com-
puter shall be 5G.
3.3.10.2
Temperature - The equipment shall operate satis-
factorily when subjected to the continuous temperature requirements of
MIL-E-5400 for Class 1 equipment except as specified herein. Degraded
performance shall be permitted for ambient temperatures in excess of
46.1 DEG C. Minimum operating temperature for the Position Indicator
shall be limited to -25 DEG C.
3.3.10.3
Cooling Air - Circulating cabin air with maximum
termperature of +55 DEG C be available for cooling the equipment
specified herein.
3.3.11
Alignment Time - The time required to warmup and
align prior to operation shall not exceed the values tabulated below.
Mode
Time
Temperature Range (T)
Inertial -*Ground Align
T > -18 DEG C
20 MIN
Inertial -*Damping On
30 MIN
-54 DEG C < T
-18 DEG C
(Inflight Align)
T -54 DEG C
Slave
3.5 MIN
T -54 DEG C
Free
3.5 MIN
*For latitudes below 75 DEG
8

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