Specifications

VP ONCORE COMMAND REFERENCE
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TIME OF DAY (@@Aa)
This input command changes the current time in the VP’s Real Time
Clock (RTC) to the time specified in the command. The GMT correction
(@@Ab command) and the UTC/GPS Time Mode selection (@@Aw
command) should be specified before the Time of Day is set.
The time in the GPS receiver will be correct if the internal RTC has been
powered. It is not necessary for the user to enter the current time of day
if the RTC power is removed; however the TTFF will be reduced if the
time is initialized. The GPS receiver corrects the time data in the RTC
with time 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 Time
of Day 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
12:00:00 at power up.
Time is stored as local time or GMT depending on the setting of the GMT
Offset parameter. The GPS receiver automatically compensates for
leap-second corrections, thus the seconds field in the message will
indicate 60 when a leap second is inserted. Leap seconds are inserted
approximately once per year. See Leap Second Pending Status
Message (@@Bj command
)
.
Range: 00:00:00 to 23:59:59
Default value: Time from RTC if no satellites tracked (12:00:00 GPS
Time if RTC and backup power not present.)
Time from satellite if at least one satellite tracked
5 Synergy Systems, LLC 05OCT01