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NDAS-N. User Manual.
36
In addition, the information on the time validity as well as on the coordinates of the device (in case
of the GPS synchronization) is displayed in the metadata of the NJSP stream of the auxiliary ADC
integrated with NDAS-RT.
7.1.
Start of the Module
Click the
Config
tab on the NDAS-RT main interface (see Fig. 4.1 and 4.2). Find the line with
the
GPS and Time
module, click the
run
button in this line. The module may take some time to start.
When enabling and disabling the module, a password will be requested to get a root access.
This is required to start the necessary operating system services.
If the information in the line has not been updated, click the
refresh state
button in the upper
right corner of the screen.
7.2. Module interface
Module interface is divided into the
Status
tab and the
Config
tab.
The
Status
tab contains general information such as the currently selected time source, evaluation
of the time offset against the true time, and a logical flag that reports the validity of the clock readings.
The same information is duplicated in the module status bar on the NDAS-RT main interface.
In addition, information for each source is displayed:
●
The GPS status contains information about the coordinate, time, status of the leap seconds, and
number of satellites in view. The NTP service is used to synchronize the system clock with the
GPS clock so evaluation of the timing accuracy is available in the next line in the NTP status;
●
The NPT status contains information about the current server, time, status of the leap seconds,
and evaluation of the clock error against the true time;
●
The PTP status contains information about the current operation mode (Master/Slave), id master,
evaluation of the timing accuracy.
