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|  MIL-N-81604C(AS)
Appendix 1
Para 30.5.12.1
(cont)
(refer to table III). The sign and punctuation
of the display words shall be contained within
the bits of the status word. The eight bits of
address for the status word and two display
*
words are specified in table XXVII.
Serial Data from CIU to CAU - This data line
e.
shall transmit 28 bits of data (command or
display word), LSB first, to the CAU. The
command word bits are specified in table XXVII
*
and shall represent the data switch (PRES POS
and NWPR/MV), mode switch (MAG SLV), ENTER mode
selector (left and right) and "On Deck." The
two display words, left or right, shall con-
*
tain the data to be entered (refer to table
XXVII). The 8 bits of address for the command
*
*
word shall conform to table XXVIII.
Basic timing relationships between these
signals in the interface are specified in
*
figure 14.
30.5.12.2 Heading Slew Inputs - The heading slew inputs shall
be enabled within the CAU only in the free mode of operation.
*
Refer to 3.4.4.4b.
Heading Slew Sign - The input shall be either
a.
*
open or connected to the heading slew return.
When the input is open, the true heading servo
*
*
shall slew in a direction to cause the true
*
heading output to increase in a positive
direction. When the input is connected to the
heading slew return, the servo shall slew in
*
a decreasing direction.
Heading Slew Fast - When this input is con-
b.
*
nected to the heading slew return, the true
*
heading servo shall slew at the rate of 51
*
degrees/second 10 percent.
Heading Slew Slow - When this input is con-
c.
*
nected to the heading slew return, the true
*
heading servo shall slew at the rate of 3.3
degrees/second 10 percent.
*
188
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