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|  MIL-N-85005A(AS)
The SDC shall contain the following major functions:
Analog Inputs - The following external analog inputs
3.5.8.4.1
shall be converted for digital transmission to NC:
INPUT
TYPE
SOURCE
3 wire synchro, 11.8 V
True Air Speed
CPK-28/A24G-9 True
line to line, 400 Hz,
Air Speed
Phase A
Radar Bearing
IP-414A/APA-125
3 wire synchro, 11.8 V
line to line, 400 Hz,
Radar Indicator
Phase A
Drift Angle
3 wire synchro, 11.8 V
C-4418/APN-153(V)
line to line, 400 Hz
Doppler Control Panel
Phase A
Azimuth Resolver
4 wire resolver, 5 V
CN-1231/ASN-84
Single Speed
line to line, 400 Hz
Gyroscope Assembly
25 lead from Phase A
Azimuth Resolver
4 wire resolver, 5 V
CX-1231/ASN-84
8 Speed
line to line 400 Hz
Gyroscope Assembly
65 lead from Phase A
Magnetic Heading
3 wire synchro, 11.8 V
MX-6985/ASN-50
line to line, 400 Hz
Compass Adapter
Phase A
Compensator
Roll Gimbal
2 wire DC voltage,
CN-1231/ASN-84
Gyroscope Assembly
+2 VDC to +5 VDC range
Temperature
Reference is directed to Paragraph 3.5.8.4.1.2.
Input Impedance - All synchro and resolver inputs
3.5.8.4.1.1
shall have an input impedance of not less than 5,000 ohms. Roll gimbal
temperature input shall have an input impedance of not less than 10,000 ohms.
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