EndRun Sonoma N12, User Manual

Page: 91 / 174

S o n o m a U s e r M a n u a l 74
C H A P T E R N I N E
75 S o n o m a U s e r M a n u a l
C O N T R O L A N D S T A T U S C O M M A N D S
faultstat
This command returns the summary of all system fault states in a user-friendly format. It decodes the
fault status word (FLTS) returned in the
gpsstat
command and displays the result in a tabular form
with verbose descriptions. (For units shipped after May 2017 there will be additional faults for the
GPS Receiver.) For details on the various faults see Appendix G - System Faults .
Command:
faultstat
Sonoma reply:
System Fault Status:
System Oscillator DAC -------------------------> OK
GPS Signal ------------------------------------> OK
FPGA Configuration ----------------------------> OK
FLASH Writes ----------------------------------> OK
GPS Receiver Communication --------------------> OK
GPS Reference Time ----------------------------> OK
Subsystem Communication -----------------------> OK
GPS Antenna -----------------------------------> OK
System Oscillator PLL Unlocked-----------------> OK
System Power/Configuration --------------------> OK
get_sw_opts
See
Chapter 10 - Options, Software Options
for information on this command.
gpsdynmode
This command displays the current GPS Subsystem dynamic mode of operation. It has two possible
settings: ON or OFF. When it is ON, it is assumed that the Sonoma is installed on a moving plat-
form. When it is OFF, it is assumed that the Sonoma is installed in a stationary location.
When the dynamic mode is OFF, the Sonoma will use its accurate reference position to implement
Timing Receiver Autonomous Integrity Monitoring (TRAIM) for the utmost in reliability during any
GPS system faults. In addition, single satellite operation is possible once an initial accurate position
has been determined.
When the dynamic mode is ON, only a very minimal TRAIM algorithm is in effect because the ac-
curate reference position is not static. In addition, a minimum of four satellites must be visible and
only 3-D position fixes are used. When the dynamic mode is ON, the source reported for the accurate
reference position by
gpsrefpos
is set to DYN.
Command:
gpsdynmode
Sonoma reply:
OFF
gpslastfix
This command provides the last computed GPS position. When tracking four or more satellites, the
GPS Receiver provides a 3D-position fix. When only three satellites are in view, this will drop to
a 2D-position fix. The last-fix position is unaveraged and typically less accurate than the reference
position, but it does provide a good indication that the receiver is working properly. Position is pro-
vided in latitude, longitude and height above the WGS-84 ellipsoid.
Command:
gpslastfix
Sonoma reply:
LAST POSITION FIX = N38d24m54.28s W122d45m10.89s +00010.9 meters