Honeywell SPZ-8000 - Navigation Display Unit ARINC 429 Digital Output Data

2. D. (5) Data
(a)
(b)
(c)
(d)
(6) Data
(a)
(b)
(c)
SIGNAL
Set Latitude
Set Longitude
Set Magnetic
Head i ng
Crosstrack
Status Word
Honeywell
outputs
The NDU simultaneously
MAINTENANCE
MANUAL
GULFSTREAM IV
transmits ARINC 429
low-speed (12.5
KPBS)
data on three separately buffered digital bus output
ports.
Refer to table 2-13
for a list of the ARINC 429 data
transmitted from
the NDU.
The
NDU does not output set latitude, set longitude, and set
magnetic heading signals (table 2-13) at a repetitive rate;
instead, the
NDU outputs these signals as a “burst” of two to
four transmissions at a 5/s rate
when the data is entered by
the pilot.
Table 2-14 defines the use and bit functions of the status word
discrete (octal label 275) found in table 2-13.
Inputs
The NDU receives data from IRU 1, IRU 2, and IRU 3 through
ports 1, 2, and 3 (connectors Jl, J2, and J3), respectively.
Table 2-15 defines the NDU
characteristics.
Table 2-16 defines the use
discrete word (octal label
Table 2-17 defines the use
Ready discrete word (octal
OCTAL
LABEL
—
041
042
043
116
275*
FORMAT
—
Bco
BCD
BCO
BNR
DIS
SIGNIF-
ICANT
CHAR
5
6
4
15
--
* Refer to Table 2-14 for octal label format.
OIGITAL
RANGE
90s
to
90N
180E
to
180W
o to
359.9
+ 128
--
input data and their
and bit functions of the IRS
270) found in table 2-15.
and bit functions of the Time to
NAV
label 351) found
in table 2-15.
RESO-
LUTION
0.1 MIN
0.1 MIN
0.1 DEG
0.004
nm
--
MS8
WEIGHT
—
--
--
--
64
--
UNITS
—
OEG
MIN
OEG
MIN
DEG
Nm
--
POSITIVE
SENSE
NORTH
EAST
CW FROM N
Fly left
--
MIN
UPOATE
RATE
(SPS)
--
--
--
25
5
Navigation Display Unit
ARINC 429 Digital Output Data
Table 2-13
22-14-00
Page 128.8
Apr 15/93
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