M e r i d i a n I I U s e r M a n u a l
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C H A P T E R T H R E E
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M e r i d i a n I I 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
sysosctype
This command displays the installed system oscillator type. It is either TCXO, MS-OCXO, HS-
OCXO, US-OCXO, Rubidium or US-Rubidium. The standard oscillator type is the TCXO.
Command:
sysosctype
MeridianII reply:
Installed Oscillator is TCXO.
sysrootfs
This command returns the currently loaded linux root file system, either 0 or 1, where 0 is the fac-
tory-installed root file system and 1 is the upgraded root file system.
Command:
sysrootfs
MeridianII reply:
BOOTED ROOT FILE SYSTEM IMAGE = 1 (Upgrade)
sysstat
This command allows you to query the status of the NTP Subsystem. It retrieves information from
the NTP daemon to determine the current synchronization status of the NTP Subsystem. It then
retrieves the last line in the logfile
/var/log/praecis0.monitor
controlled by the NTP daemon reference
clock driver that communicates with the GPS Subsystem. This logfile is updated every 16 seconds
under normal operation. It parses and formats the data contained therein and prints this fixed-length
(generally, since grossly unsynchronized states could cause the floating offset field to overflow mo-
mentarily) string having these fields:
LKSTAT TO GPS, Offset = +S.sssssssss, LI = ??, TFOM = ? @ YEAR DOY HH:MM:SS LS
Where:
LKSTAT is the system peer status of the NTP daemon relative to the GPS Subsystem, either
LOCKED or NOTLKD. NOTLKD can imply several things: the system has just started,
there is a fault in the GPS Subsystem which has caused NTP to either be unable to obtain
timing information from the GPS Subsystem or to reject the timing information that it is
obtaining from it.
+S.sssssssss is the offset in seconds between the NTP system clock and the GPS Subsystem clock.
Positive implies that the system clock is ahead of the GPS Subsystem.
LI = ??
is the NTP daemon leap indicator bits. Leap seconds occur every 2-3 years.
Possible indicator values are:
00:
Normal, locked operation.
01:
Leap second insertion event will occur after 23:59:59 UTC.
10:
Leap second deletion event will occur after 23:59:58 UTC.
11:
Fault. Unsynchronized state.
TFOM = ? is a value between 3 and 9 and indicates clock accuracy.
A detailed explanation of TFOM is in
Appendix A - TFOM.
.
Summary of Contents for Meridian II
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