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|  MIL-C-38418E(AS)
a.
The pitch erection shall be reduced to 25 percent of the
nominal value and magnetic slaving shall be removed when using the
ASK-32/A24G-39 electronic control amplifier.
b.
The pitch erection shall be reduced to 25 percent of the
nominal value when using the ASK-44/A24G electronic control amplifier.
3.7.5 Data Transmitters - Four synchro transmitters whose rotors are
positioned by the heading servo shall be provided to transmit
Each synchro transmitter shall have nominal electrical
information.
characteristics as shown in table VII. Three of these transmitters shall
be designed primary and identified as No.'s 1, 2, and 30
The fourth
shall be designated secondary (table V).
TABLE VII.
Heading Output Transmitters Synchro
Nominal Electrical Characteristics
Input voltage
115V 400 Hz
Input current
29 mA
Input power
0.8 W
Output voltage (max)
11.8V
206 mV/deg
Sensitivity (no load)
Phase shift (no load)
110
700 ohms
dc rotor resistance
dc stator resistance
10.4 ohms
Zro = 950 + j3,850 ohms
Impedance
Impedance
Zso = 10 + j36 ohms
Impedance
Zrss = 1,550 + j420 ohms
75 mV
Max null voltage
14 minutes
Accuracy (max error spread)
Data Transmitter Zero and Sensing - Input transmitters for
3.7.5.1
simulating heading, pitch, and roll signals from the displacement
gyroscope shall be indexed and coded for electrical zero and rotation in
These transmitters shall be excited from
accordance with MIL-S-20708.
400 Hz A, with R1 high and R2 low. Stator connections to the amplifier
shall be in accordance with table III.
Heading Transmitter - Rotor and stator leads of each
3.7.5.1.1
heading output transmitter are identified in table V in accordance with
With R2 of each output
the lead coding standards of MIL-S-20708.
transmitter connected to S2, and with R1 to R2 excited from 400 Hz, any
phase, turn the heading input transmitter to obtain a minimum voltage
from S1 to S3 and a voltage greater than the excitation voltage from S1 to
20
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