----------------------------------------------------------------------------
| BIT | DEFINITION | |--------------------------------------------------------------------------| | 31 | 0 | 0 | 1 | 1 | 0 | |---------|----------|---------|---------|---------|-----------------------| | 32 | Parity | ----------------------------------------------------------------------------
Digital Word 277 (CDU Test Word)
NOTE : Time (seconds) remaining in the POWER OFF submode and the time
____ (seconds) remaining in the REALIGN DECISION submode are transmitted with the BCD data (bits 11-18).
R **ON A/C 051-099, 106-149, 204-299, 301-399,
----------------------------------------------------------------------------| BIT | DEFINITION | |--------------------------------------------------------------------------| | 1 | 1 -| | 2 | 1 | | | 3 | 1 | | | 4 | 0 | LABEL 350 | | 5 | 1 | | | 6 | 0 | | | 7 | 0 | | | 8 | 0 -| |--------------------------------------------------------------------------| | 9 | SDI - LSB | | 10 | SDI - MSB | |--------------------------------------------------------------------------| | 11 TO 14 | SPARE | |----------|---------------------------------------------------------------| | 15 | TIME UNTIL NAV LEAST | | 16 | TIME UNTIL NAV SIGNIFICANT | | 17 | TIME UNTIL NAV DIGIT | | 18 | TIME UNTIL NAV (BCD) | |----------|---------------------------------------------------------------| | 19 | TIME UNTIL NAV MOST | | 20 | TIME UNTIL NAV SIGNIFICANT | | 21 | TIME UNTIL NAV DIGIT | | 22 | TIME UNTIL NAV (BCD) | |----------|---------------------------------------------------------------| | 23 | Action Code (1) Least | | 24 | Action Code (1) Significant | | 25 | Action Code (1) Digit | | 26 | Action Code (1) |
R 1EFF : 051-099, 106-149, 204-299, 301-399, 1 34-14-00Page 61 1401-499, 1Config-3 Aug 01/05 1 1 1CES 1 ----------------------------------------------------------------------------| BIT | DEFINITION | |--------------------------------------------------------------------------| |----------|---------------------------------------------------------------| | 27 | Action Code (1) Most | | 28 | Action Code (1) Significant | | 29 | Action Code (1) Digit | |----------|---------------------------------------------------------------| | 30 | SSM | | 31 | SSM | | 32 | Parity | ----------------------------------------------------------------------------
Digital Word 350 (Action Code)
NOTE : (1) The action codes corresponding to the maintenance messages
____
are listed in the following table.
---------------------------------------------------------------------------| ACTION CODE | MAINTENANCE MESSAGE | DESCRIPTION | |-------------|---------------------|-------------------------------------| | 01 | IR FAULT | Critical failure; Remove ADIRU for | | | | maintenance | | 02 | DELAYED MAINT | Non-Critical failure; Service ADIRU | | | | when convenient | | 03 | ENTER PPOS | Enter present position | | 04 | SELECT ATT | Hard failure; Select ATTITUDE MODE | | 05 | EXCESS MOTION | Excess motion detected during ALIGN | | 06 | SWITCH ADR | Air Data Reference invalid | | 07 | CHK C/B | Check circuit breakers | | 08 | CDU FAULT | Remove CDU for maintenance | | 09 | ENTER HEADING | Enter heading for ATTITUDE MODE | | 10 | | Unassigned TBD | ----------------------------------------------------------------------------
Action Code - Maintenance Messages
(Ref. Fig. 005, 006, 008)
R 1EFF : 051-099, 106-149, 204-299, 301-399, 1 34-14-00Page 62 1 1 Config-3 Aug 01/05 1 1 1CES 1
IR - Binary Output Words
Figure 008
R 1EFF : 051-099, 106-149, 204-299, 301-399, 1 34-14-00Page 63 1401-499, 1Config-3 Aug 01/05 1 1 1CES 1
-------------------------------------------------------------------------------
| BIT No.| FUNCTION | |--------|--------------------------------------------------------------------| | 9 | SDI | | 10 | SDI | | 11 | MSB OF SATELLITES VISIBLE (16) | | 12 | DADS STATUS Present = 0 Not present = 1 | | 13 | DADS SOURCE Primary = 0 Secondary = 1 | | 14 | IRS/FMS STATUS Present = 0 Not present = 1 | | 15 | IRS/FMS SOURCE Primary = 0 Secondary = 1 | | 16 | -| | 17 | | NUMBER OF SATELLITES VISIBLE (0-15) | | 18 | | | | 19 | -| | 20 | -| | 21 | | NUMBER OF SATELLITES TRACKED (0-15) | | 22 | | | | 23 | -| | 24 | -00 = GPS | | | | SYSTEM DESIGNATOR 01 = GLONASS | | | | 10 = GPS GLONASS | | 25 | -11 = Spare | | 26 | -| | 27 | | GPSSU OPERATIONAL MODE (Ref table below) | | 28 | -| | 29 | MSB OF TRACKED SATELLITES | | 30 | SSM | | 31 | SSM | | 32 | PARITY | -------------------------------------------------------------------------------
Discrete Word 273 Output Format
-----------------------------------------------------------| GPSSU MODE | BIT 28 | BIT 27 | BIT 26 | -----------------------------------------------------------| SELF TEST | 0 | 0 | 0 | | INITIALIZATION | 0 | 0 | 1 | | ACQUISITION | 0 | 1 | 0 | | NAVIGATION | 0 | 1 | 1 | | ALTITUDE AIDING | 1 | 0 | 0 | | DIFFERENTIAL MODE | 1 | 0 | 1 | | DIR/SPEED AIDING MODE | 1 | 1 | 0 | | FAULT | 1 | 1 | 1 | -----------------------------------------------------------
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