Command line interface
6.4.4 TIME?
Syntax:
TIME?
Displays the current date and time from the software clock that is used to time-
stamp digitised data. See
SET-CLOCK
for more details.
6.4.5 getWNROpivot
Syntax:
getWNROpivot
Prints the configured GPS week-number roll-over pivot date. See
setWNROpivot
,
below, for more details.
6.4.6 setWNROpivot
Syntax:
YYYY MM DD
setWNROpivot
This command sets the "pivot date" which will be used for any required GPS week-
number roll-over (WNRO) corrections, where:
•
YYYY
specifies the four-digit year;
•
MM
specifies the month, with
01
representing January and
12
representing
December; and
•
DD
specifies the day of the month.
If an attached GPS receiver reports that the current date is
earlier
than the pivot date
specified with this command, the digitiser will assume that the receiver is affected
by the WNRO problem. The digitiser will add one or more multiples of 1024 weeks to
the reported date until the result is later than the specified pivot date. This modified
date is then used for time-stamping data. See section 7.2.3 on page 100 for more
details.
For best results, specify a date in the very recent past and repeat every nineteen
years.
6.4.7 LEAPSECOND
Syntax:
yyyy
mm
dd
LEAPSECOND
Manually notify the digitiser of an upcoming leap second. This command serves two
purposes.
When a positive leap-second occurs, the GPS receiver will signal this fact by sending
the special time 23:59:60. The digitiser recognises this and all data will be time-
stamped appropriately. If for any reason, the digitiser does not receive this time - the
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Issue U - December, 2021
