Specifications

VP ONCORE COMMAND REFERENCE
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DATE COMMAND (@@Ac)
This input command changes the current date in the GPS receiver
real-time clock (RTC) to the date specified in the command. The GMT
Correction should be set using the @@Ab Command before the Date is
set.
The date in the GPS receiver will normally be correct if the internal RTC
has been powered. It is not necessary for the user to enter the current
date if the RTC power is removed, however the TTFF will be reduced if
the date is initialized. The GPS receiver corrects the date data in the
RTC with date information decoded from the satellite broadcast data as
soon as one satellite is tracked.
The GPS receiver uses the satellite data to set the RTC, hence the Date
command is ignored if the GPS receiver is tracking at least one satellite.
If the RTC has not been backup powered, then it is initialized at the
default date at power up. This default date varies depending upon the
firmware present in the receiver. Note that the Oncore receiver will
automatically handle the rollover in GPS time that will happen in August
1999 as well as the year 2000 rollover.
Range: Month: 1 .. 12
Day: 1 .. 31
Year: 1980 .. 2077
Default value: Date from RTC if no satellite tracked
Date from satellite if at least one satellite tracked
13 Synergy Systems, LLC 05OCT01