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Page Title:
Discrete Outputs from CAU to ANCU |
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|  MIL-N-81604C(AS)
Appendix I
Para 30.5.10.2
(cont)
DOP-INS Mode - This software developed discrete
c.
output from the ANCU goes to a true (high, open,
or ANCU power off) state to indicate that the
*
CAINS system is in the doppler-inertial mode
of navigation. The electrical interface is
Type B circuitry.
INS Mode - This software developed discrete
d.
output from the ANCU goes to a true (high,
open, or ANCU power off) state to indicate
.
that the CAINS system is in the inertial mode
of navigation. The electrical interface is
Type B circuitry.
*
*
e.
CAU Control Command - Refer to 3.4.4.3.2b.
The CAU line receiver shall be a Type B circuit.
*
INS No-Go - Refer to 3.4.4.3.2c. The CAU
f.
line receiver shall be a Type B circuit.
CAU Flag Reset - Refer to 3.4.4.3.2d. The
CAU
*
g.
line receiver shall be a Type C circuit.
*
h.
ANCU No-Go - Refer to 3.4.4.3.2e. The CAU
line receiver shall be a Type C circuit.
30.5.10.3 Discrete Outputs from CAU to ANCU - Three of the
seven available ANCU input discretes shall be utilized by the
program for the E-2C application.
a.
HARS No-Go - This discrete input to the ANCU
goes to a true (high, open, or CAU power off)
state to indicate that the HARS magnetic head-
ing information is not valid or that it is
unsoothed.
The software would not use HAM
magnetic heading information at this time, but
would develop magnetic heading from inertially
derived heading.
This discrete is used both
in the CAU and in the ANCU. The CAU line
driver and the ANCU line receiver shall be
Type B circuits.
184
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