EndRun Meridian II, Руководство пользователя

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M e r i d i a n I I U s e r M a n u a l 36
C H A P T E R T H R E E
37 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
MEASERR is the last measured time offset of the GPS Subsystem to GPS while locked, in
seconds.
TIMEDEV is the time deviation (TDEV) of the offset measurements in seconds. The tau
associated with this measurement is three seconds, which is the update interval
of the position fixes received from the GPS Receiver.
AGERATE is the regression-computed system oscillator ageing rate per day (several-hour
delay before the first measurements are displayed).
TAU is the system oscillator control loop averaging time constant, in seconds. It’s
value is automatically adjusted to maintain optimum offset and stability.
EFCDAC is the system oscillator Electronic Frequency Control 20-bit DAC value. The
system automatically sets this value to remove frequency errors. Values may
range from 0 to 1048575. Values close to the maximum or minimum will set the
DAC fault flag that will appear in the fault status display. The Time/Status
display will also indicate a fault condition.
TEMP is the chassis internal temperature in °C.
Below is an example of a typical response to this command:
Command:
oscctrlstat
MeridianII reply:
20130117.00:23:10 LKD 0 6.26e-09 -6.26000e-09 1.25e-09 -6.93e-13 1955.3 524281
+50.750
passwd
This command is used to change the password for the user that you are logged in as. It affects the
serial port, SSH, Telnet and HTTPS.
passwd
is a Linux command that is also described in Appendix
C - Helpful Linux Information .
Command:
passwd
MeridianII reply: Interactive script is started.
pluginopts
This command displays the current settings for the installed plug-in option boards. See Chapter 10
- Rear-Panel I/O, Plug-In Module Options for more information.
Command:
pluginopts
MeridianII reply:
Digital Buffer, 2001-0004-012-NC is installed--
Serial Number 15070001
Port A Current Setting = 10M PPS.
Port B Current Setting = 5M PPS.
Port C Current Setting = 10 PPS.
Port D Current Setting = 10 PPS.