Guralp Systems CMG-CD24 - Manual (Page 57)

Operator's Guide
synchronize its internal clock with GPS timing signals. Once the
internal clock is sufficiently close to GPS time, the GPS system will be
automatically powered down for another interval hours.
Setting interval to 0 will make the CD24 leave the GPS on
continuously. This is recommended if your installation has access to
mains power.
To find out the current HR-CYCLE setting, issue HR-CYCLE?
5.3.3 XGPS
Syntax: 0 XGPS | 1 XGPS
Manually switches on or off the GPS system, overriding the HR-CYCLE
command (see above). If you issue 0 XGPS, the digitiser will switch
off the relay; 1 XGPS will switch it on. Once the GPS system is
switched on, the digitiser will automatically check the timing signal
and synchronise its internal clock before switching off the GPS and
returning to normal operation.
5.3.4 SET-RTC
Syntax: year month day hour minute second centisecond
SET-RTC
Sets the system's real time clock. This time will be used from power-
up until it is corrected by an attached GPS. If you are not using GPS
but are synchronizing from some other time source, you will need to
re-issue this command regularly to ensure the CD24 does not drift.
5.3.5 SET-CLOCK
Syntax: SET-CLOCK (interactive)
Sets the internal clock.
SET-CLOCK
Enter Date & Time -
YYYY MM DD HH MM SS
2006 02 01 12 53 25 Clock set 2006 2 1 12:53:27 ok
The time should be entered in the form year month day hour
minute second, padding each field with zeroes so that they line up
with the guide above.
If the CD24 does not recognize the time format you have used, it will
output and error message.
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